# Proxmox Toshiba Drive Recovery
**User:** Anonymous
**Created:** 6/1/2026 7:30:04
**Updated:** 6/5/2026 12:32:41
**Exported:** 6/5/2026 12:49:42
**Link:** [https://chatgpt.com/g/g-p-6821b93d4af88191bbd202f6692cba5b/c/6a1d1822-8060-832a-be50-b11812865d5f](https://chatgpt.com/g/g-p-6821b93d4af88191bbd202f6692cba5b/c/6a1d1822-8060-832a-be50-b11812865d5f)
## Prompt:
01/06/2026, 07:30:03
Hi there, this is Carey!
I have a non-production Proxmox Server running with a disk from a customer attached. The goal is to read the Toshiba drive (with a faulty, but still accessible file system) and pull as much data as I can from it. Here are the particulars:
###
root@hv03 26-06-07:22:50: lsblk -o +MODEL,SERIAL,WWN
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS MODEL SERIAL WWN
sda 8:0 0 931.5G 0 disk SAMSUNG HD103UJ S13PJDWS666438 0x50024e9001a614c7
├─sda1 8:1 0 1007K 0 part 0x50024e9001a614c7
├─sda2 8:2 0 1G 0 part /boot/efi 0x50024e9001a614c7
└─sda3 8:3 0 930.5G 0 part 0x50024e9001a614c7
├─pve-swap 252:2 0 8G 0 lvm [SWAP]
├─pve-root 252:3 0 96G 0 lvm /
├─pve-data_tmeta 252:4 0 8.1G 0 lvm
│ └─pve-data-tpool 252:8 0 794.3G 0 lvm
│ └─pve-data 252:9 0 794.3G 1 lvm
└─pve-data_tdata 252:5 0 794.3G 0 lvm
└─pve-data-tpool 252:8 0 794.3G 0 lvm
└─pve-data 252:9 0 794.3G 1 lvm
sdb 8:16 0 931.5G 0 disk ST1000NM0033-9ZM173 Z1W3FH0R 0x5000c5007a833d95
├─HDDsdb-HDDsdb_tmeta 252:0 0 9.3G 0 lvm
│ └─HDDsdb-HDDsdb-tpool 252:6 0 912.8G 0 lvm
│ └─HDDsdb-HDDsdb 252:7 0 912.8G 1 lvm
└─HDDsdb-HDDsdb_tdata 252:1 0 912.8G 0 lvm
└─HDDsdb-HDDsdb-tpool 252:6 0 912.8G 0 lvm
└─HDDsdb-HDDsdb 252:7 0 912.8G 1 lvm
sdc 8:32 0 465.8G 0 disk TOSHIBA MQ01ABD050 Y2E6SOQLS 0x500003946588324d
├─sdc1 8:33 0 1007K 0 part 0x500003946588324d
├─sdc2 8:34 0 1G 0 part 0x500003946588324d
└─sdc3 8:35 0 464.8G 0 part 0x500003946588324d
├─pve_toshiba-swap 252:10 0 8G 0 lvm
├─pve_toshiba-root 252:11 0 96G 0 lvm
├─pve_toshiba-data_tmeta 252:12 0 3.4G 0 lvm
│ └─pve_toshiba-data 252:14 0 337.9G 0 lvm
└─pve_toshiba-data_tdata 252:13 0 337.9G 0 lvm
└─pve_toshiba-data 252:14 0 337.9G 0 lvm
sr0 11:0 1 1024M 0 rom HL-DT-ST DVDRAM GH22NS40 K0B8AP93323 0x5001480000000000
root@hv03 26-06-07:23:02:
## Response:
01/06/2026, 07:30:04
> **Advising on data recovery in Proxmox using stable software**
>
> I need to offer guidance based on existing knowledge since the user seems to be asking for help with Proxmox data recovery. Software tools are stable but may be outdated. Although tools might be up-to-date, I’ll mention essential procedures without the need for browsing. Importantly, clone first, avoid mounting rw, and ensure correct identification of the Toshiba drive.
>
> **Providing guidance on Proxmox data recovery process**
>
> [lvchange (8) – Linux manual page – man7.org](https://www.man7.org/linux/man-pages/man8/lvchange.8.html)
> [GNU ddrescue Manual](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html)
> [How to Use ‘ddrescue’ to Recover Data from a Failing Hard Drive](https://www.dotlinux.net/blog/how-to-use-ddrescue-to-recover-data-from-failing-hard-drive/)
> [GNU ddrescue Manual – docs.jade.fyi](https://docs.jade.fyi/gnu/ddrescue.html)
> [Guide for using Ddrescue to recover data · GitHub](https://gist.github.com/cetinajero/78417647c0b7c89691b921e5327a3493)
> [How to Repair and Clone Disks with ddrescue: A Comprehensive Guide](https://www.thelinuxvault.net/blog/how-to-repair-and-clone-disk-with-ddrescue/)
>
> **Guiding through LVM inspection and potential risks**
>
> I need to figure out how to approach inspecting the LVM setup, especially for a thin pool like pve_toshiba-data. It seems the LVM might not show child LVs properly, so I should use specific commands to inspect and identify volumes. I’ll avoid mounting RW to prevent metadata writes.
>
> **Guiding through recovery steps and precautionary measures**
>
> To proceed with recovery, I’ll suggest first installing necessary tools like `gddrescue`, `smartmontools`, and `lvm2`. SMART self-tests should be avoided to prevent potential wear on the drive, reading attributes should be fine though. I’ll include commands to safely disable writes and set drives to read-only, ensuring minimal risk during the process.
>
> **Mounting disks for data copy with precautions**
>
> If the goal is to immediately copy data and the disk is accessible, I’ll suggest mounting the root partition in read-only mode. For XFS, I’ll use special parameters like `norecovery`, while for ext4, `noload` can be useful to prevent journal replay. I’ll need to verify these options with appropriate references.
>
> **Providing backup and disk mounting instructions for recovery**
>
> [xfs (5) – Linux manual page – man7.org](https://www.man7.org/linux/man-pages/man5/xfs.5.html)
>
> **Ensuring safe data recovery steps**
>
> I should first emphasize cloning with `ddrescue` if the drive is faulty, as the official manual warns against rescuing from a mounted partition. I’ll provide commands to keep the drive in read-only mode, using `dmsetup`, and ensure LVM paths are correct. Mentioning backup tools like `testdisk` and `photorec` could be useful, but I’ll stay focused on the main recovery process.
>
> **Clarifying partition recovery strategy**
>
> For the recovery process, I should mount the root filesystem in read-only mode (`-o ro,noload`) for an ext4 partition and use `rsync` to copy the data. For XFS, it’s important to mount with `norecovery,nouuid` to prevent filesystem modifications. If unsure about the filesystem type, I’ll use `blkid` or `file -sL` for auto-detection.
>
> **Clarifying ddrescue usage for recovery**
>
> When using ddrescue, the log file can be referred to as a “mapfile” in newer GNU versions, although some distros still refer to it as “log.” For a dying drive, it’s sometimes best to perform one pass without retries to rescue as much data as possible, retrying only after that first pass. I should double-check the official ddrescue documentation.
>
> **Searching for ddrescue documentation and best practices**
>
> [GNU ddrescue Manual](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html)
>
> **Clarifying mount options**
>
> I might need to specify the mount options more clearly. By adding certain flags like `-o ro,noload` or other options tailored to the filesystem type, it ensures the system either avoids mounting in a read-write mode or disables unnecessary actions (like journaling on ext4). I’ll double-check things.
>
> **Searching for open mount lines suggestions**
>
> [mount(8) – Linux manual page](https://www.man7.org/linux/man-pages/man8/mount.8.html)
>
> **Clarifying disk handling and precautions**
>
> I’m considering actions like avoiding `fsck -y`, `xfs_repair`, or any repair commands like `lvconvert –repair`, as they might introduce unwanted changes. I should also avoid mounting volumes if it’s not required. If cloning and deactivating LVs first, I’ll use commands like `vgchange -an` and ensure disks are unmounted before using `ddrescue`.
>
> **Considering destination storage options**
>
> I should avoid directly using LVM for image storage because it’s likely thin LVM. Instead, an external USB or NAS would be safer. If there’s no space available, I might create storage on the Proxmox root, but since 96GB isn’t enough, I’ll need to consider alternatives like using `/dev/sdb`.
>
> **Advising caution with storage and image mounting**
>
> It’s important not to save an image directly on Proxmox’s local-lvm (especially in the `data` volume) because it’s a thin pool and could be destroyed. Instead, use a mounted filesystem with at least 500GB of free space, or opt for NAS. Also, ensure you’re careful with attaching memory images to avoid UUID conflicts.
>
> **Mounting root and backing up data**
>
> To mount the root partition, use the following commands depending on whether it’s XFS or ext4. For ext4, the basic command is `mount -t ext4 -o ro,noload`. If it’s XFS, use `mount -t xfs -o ro,norecovery,nouuid`. For data backup, it’s recommended to use `rsync` to safely copy data into the recovery directory. Also, remember, `/etc/pve` is a FUSE mount, so copy `/var/lib/pve-cluster/config.db` if the system is down.
>
> **Backing up important Proxmox data**
>
> When backing up, remember to include the following important directories: `/var/lib/pve-cluster/config.db`, `/etc/network/interfaces`, `/etc/hosts`, `/etc/hostname`, `/etc/fstab`, and `/etc/pve` (even if it’s empty). Don’t forget root backups and guest disks in the data thin pool. Citations might not be necessary for these expert-level paths, but verifying from Proxmox’s official docs might help.
>
> **Mounting, recovering, and copying Proxmox disk data**
>
> [Proxmox Cluster File System (pmxcfs) – Proxmox VE](https://pve.proxmox.com/wiki/Proxmox_Cluster_file_system_%28pmxcfs%29)
> [pve-docs/pmxcfs.adoc at master · proxmox/pve-docs · GitHub](https://github.com/proxmox/pve-docs/blob/master/pmxcfs.adoc)
> [Cluster File System | proxmox/pve-docs | DeepWiki](https://deepwiki.com/proxmox/pve-docs/3.4-cluster-file-system)
> [Backup Cluster configuration – /etc/pve – free-pmx](https://free-pmx.org/guides/configs-backup/)
> [Proxmox VE Cluster Management | Crusader Two-One](https://josephstreeter.github.io/docs/infrastructure/proxmox/cluster.html)
> [pmxcfs (Proxmox Cluster File System) restore a deleted node](https://tty.se/notes/restore_proxmox_pve/)
> [Proxmox – Fixing your database after a host name change](https://nramkumar.org/tech/blog/2023/07/08/proxmox-fixing-your-database-after-a-host-name-change/)
> [How to Back Up and Restore Proxmox VE 9 Host Configuration (Step-by …](https://www.saturnme.com/how-to-back-up-and-restore-proxmox-ve-9-host-configuration-step-by-step-guide/)
> [Proxmox Database Corruption – ipcc_send_rec [1] failed: Connection …](https://tcuser.net/proxmox-database-corruption-ipcc-send-rec-1-failed-connection-refused)
> [Backup and Restore Proxmox Configuration Files](https://blog.johnsonpremier.net/backup_restore_proxmox_config_/)
> [Proxmox VE Host Name Changing On Existing Server](https://www.livingintech.com/2026/03/proxmox-ve-host-name-changing-on.html)
>
> **Clarifying Proxmox guest configs**
>
> It’s likely helpful to mention that Proxmox stores guest configurations in `pmxcfs`. Official sources indicate that the `/etc/pve` layout includes directories for `node`, `lxc`, `qemu-server`, etc. However, it’s important to cite these details properly. The config database is mounted at `/etc/pve`, but the exact path might not be specified officially.
>
> **Searching Proxmox guest config paths and sources**
>
> **Using search results as citation**
>
> I got a 403 error when trying to open the source, but the search result can still be cited. It seems like that’s fine. I might also consider using the official Proxmox documentation on GitHub, if it’s accessible, as an alternative citation source.
>
> **Clarifying citation rules and access to pve-docs**
>
> [pve-docs/pmxcfs.adoc at master · proxmox/pve-docs · GitHub](https://github.com/proxmox/pve-docs/blob/master/pmxcfs.adoc)
>
> **Finalizing instructions with necessary details**
>
> I’m ready to format this clearly. I’ll mention I used current online documentation, keeping it concise but thorough. I’ll specify “do not run commands” and give citations, including for ddrescue safety, read-only mounts for ext4, and Proxmox config. I won’t overdo citations in code. Additionally, I’ll warn about potential risks with `blockdev –setro`. Keep paths adaptable, and share key assumptions for clarity.
>
> Thought for 1m 32s
I’ll treat the Toshiba as evidence-bearing media: first preserve it, then expose the LVM read-only, then copy data out without “repairing” the original. The key clue is that `sdc3` is an LVM PV with `pve_toshiba-root` and `pve_toshiba-data`, so this looks like a Proxmox install disk rather than a simple single filesystem.
One early red flag: `pve_toshiba-data` is probably **not** a normal mountable filesystem. On Proxmox it is usually an LVM-thin pool that may contain guest disk volumes; `pve_toshiba-root` is the likely mountable host OS filesystem.
Hi Carey – the Toshiba is visible and already partly activated as an LVM stack. I’d proceed in two tracks: **image first if possible**, then **read-only extraction** from either the image or the original.
## What you have
The customer disk is:
“`bash
/dev/sdc TOSHIBA MQ01ABD050 serial Y2E6SOQLS 465.8G
/dev/sdc3 -> LVM PV
VG appears as: pve_toshiba
LVs:
pve_toshiba-swap
pve_toshiba-root 96G
pve_toshiba-data 337.9G
“`
`pve_toshiba-root` is likely the old Proxmox host root filesystem. `pve_toshiba-data` is probably an **LVM-thin pool**, not a normal mountable filesystem, because it has `_tmeta` and `_tdata` backing devices.
The absolute first rule: do **not** run `fsck -y`, `xfs_repair`, `lvconvert –repair`, `vgcfgrestore`, or mount read-write on the Toshiba. GNU ddrescue explicitly warns not to rescue from mounted read/write partitions and not to repair filesystems on a drive with I/O errors. ([GNU](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html))
—
## 1. Identify the drive by stable path
Use `/dev/disk/by-id`, not `/dev/sdc`, because device names can change after reboot.
“`bash
ls -l /dev/disk/by-id/ | grep -i ‘TOSHIBA\|Y2E6SOQLS’
“`
You should get something like:
“`bash
/dev/disk/by-id/ata-TOSHIBA_MQ01ABD050_Y2E6SOQLS
“`
Then set a variable for safety:
“`bash
SRC=/dev/disk/by-id/ata-TOSHIBA_MQ01ABD050_Y2E6SOQLS
“`
Check identity and health, but do not start long self-tests:
“`bash
smartctl -i -A -H “$SRC”
dmesg -T | egrep -i ‘sdc|toshiba|error|i/o|reset|failed’
“`
—
## 2. Best path: clone the whole disk with ddrescue
Use a healthy destination filesystem with **at least 500 GB free**. Do **not** write the image to `/dev/pve/data` or `/dev/HDDsdb/HDDsdb`; those are LVM-thin pools/devices, not ordinary directories.
Assume the destination is mounted at `/recovery`:
“`bash
mkdir -p /recovery/toshiba
cd /recovery/toshiba
“`
First pass: get the easy readable sectors quickly, without hammering bad areas:
“`bash
ddrescue -n “$SRC” toshiba-MQ01ABD050-Y2E6SOQLS.img toshiba-MQ01ABD050-Y2E6SOQLS.map
“`
Second pass: retry bad areas gently:
“`bash
ddrescue -d -r3 “$SRC” toshiba-MQ01ABD050-Y2E6SOQLS.img toshiba-MQ01ABD050-Y2E6SOQLS.map
“`
The `.map` file is crucial: ddrescue periodically saves it so interrupted runs can resume without starting over. ([GNU](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html))
After imaging, detach or power down the original Toshiba and work from the image:
“`bash
losetup –find –partscan –read-only –show /recovery/toshiba/toshiba-MQ01ABD050-Y2E6SOQLS.img
“`
Suppose it returns `/dev/loop0`. Then inspect:
“`bash
lsblk -f /dev/loop0
pvscan –cache /dev/loop0p3
pvs
vgs
lvs -a -o vg_name,lv_name,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,devices
“`
If the cloned VG collides with the already-attached original VG, disconnect/deactivate the original first, or import the clone under a new VG name:
“`bash
vgimportclone –basevgname pve_toshiba_img /dev/loop0p3
vgchange –readonly -ay pve_toshiba_img
“`
—
## 3. Emergency path: mount the original read-only
Only do this if imaging first is impractical.
First make sure nothing is mounted or using swap from the Toshiba:
“`bash
findmnt | grep -i pve_toshiba || true
swapon –show | grep -i pve_toshiba || true
swapoff /dev/mapper/pve_toshiba-swap 2>/dev/null || true
“`
Set the physical disk read-only at kernel level:
“`bash
blockdev –setro /dev/sdc
blockdev –setro /dev/sdc1 /dev/sdc2 /dev/sdc3 2>/dev/null || true
blockdev –getro /dev/sdc
“`
Then set the obvious LVs read-only too:
“`bash
lvchange –permission r pve_toshiba/root 2>/dev/null || true
lvchange –permission r pve_toshiba/data 2>/dev/null || true
lvchange –permission r pve_toshiba/swap 2>/dev/null || true
“`
Now inspect the filesystem type:
“`bash
blkid /dev/pve_toshiba/root /dev/pve_toshiba/data 2>/dev/null
file -sL /dev/pve_toshiba/root
file -sL /dev/pve_toshiba/data
“`
For ext4 root:
“`bash
mkdir -p /mnt/toshiba-root
mount -t ext4 -o ro,noload /dev/pve_toshiba/root /mnt/toshiba-root
“`
That `ro,noload` matters: Linux `mount -r` alone can still replay an ext3/ext4 journal on a dirty filesystem, while `ro,noload` or a read-only block device prevents that kind of write. ([man7.org](https://www.man7.org/linux/man-pages/man8/mount.8.html))
For XFS root, try:
“`bash
mkdir -p /mnt/toshiba-root
mount -t xfs -o ro,norecovery,nouuid /dev/pve_toshiba/root /mnt/toshiba-root
“`
Avoid `fsck.xfs` as a recovery action; the XFS fsck wrapper does nothing because XFS normally performs journal recovery at mount time, and actual repair is handled by `xfs_repair`. ([man7.org](https://www.man7.org/linux//man-pages/man8/fsck.xfs.8.html))
—
## 4. Copy host data out
Once mounted:
“`bash
mkdir -p /recovery/toshiba-root-copy
rsync -aHAXx –numeric-ids –info=progress2 –ignore-errors \
/mnt/toshiba-root/ \
/recovery/toshiba-root-copy/
“`
Important Proxmox host items to preserve:
“`bash
/mnt/toshiba-root/etc/
/mnt/toshiba-root/root/
/mnt/toshiba-root/home/
/mnt/toshiba-root/var/lib/vz/
/mnt/toshiba-root/var/log/
/mnt/toshiba-root/var/lib/pve-cluster/config.db
“`
For Proxmox specifically, `/etc/pve` is a FUSE-mounted, database-backed cluster filesystem. The Proxmox docs describe `pmxcfs` as the database-driven filesystem for Proxmox configuration, mounted at `/etc/pve`, with VM configs under `nodes/
So this is worth copying separately:
“`bash
mkdir -p /recovery/proxmox-config
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db /recovery/proxmox-config/ 2>/dev/null || true
cp -a /mnt/toshiba-root/etc/network /recovery/proxmox-config/ 2>/dev/null || true
cp -a /mnt/toshiba-root/etc/hosts /recovery/proxmox-config/ 2>/dev/null || true
cp -a /mnt/toshiba-root/etc/hostname /recovery/proxmox-config/ 2>/dev/null || true
cp -a /mnt/toshiba-root/etc/fstab /recovery/proxmox-config/ 2>/dev/null || true
“`
—
## 5. Inspect the LVM-thin guest disks
Run:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,devices pve_toshiba
“`
What you hope to see are things like:
“`bash
vm-100-disk-0
vm-101-disk-0
base-9000-disk-0
subvol-102-disk-0
“`
If guest disks appear, activate read-only:
“`bash
vgchange –readonly -ay pve_toshiba
“`
For a VM disk LV, inspect partitions:
“`bash
lsblk -f /dev/pve_toshiba/vm-100-disk-0
kpartx -ar /dev/pve_toshiba/vm-100-disk-0
lsblk -f
“`
Then mount guest partitions read-only, for example:
“`bash
mkdir -p /mnt/vm100-root
mount -o ro,noload /dev/mapper/pve_toshiba-vm–100–disk–0p1 /mnt/vm100-root
“`
For LXC subvolumes, the LV may be directly mountable:
“`bash
mkdir -p /mnt/ct102
mount -o ro,noload /dev/pve_toshiba/subvol-102-disk-0 /mnt/ct102
“`
Then copy out with `rsync` as above.
—
## 6. Commands I would avoid on the Toshiba
Do not run these against `/dev/sdc`, `/dev/sdc3`, or `pve_toshiba` unless you are working on a disposable clone:
“`bash
fsck -y
e2fsck -y
xfs_repair
lvconvert –repair
vgcfgrestore
mount -o rw
pvmove
pvresize
lvremove
lvrename
vgrename
“`
Safe-ish inspection commands:
“`bash
lsblk -f
blkid
file -sL
pvs
vgs
lvs -a
smartctl -i -A -H
dmesg -T
ddrescue
rsync from read-only mounts
“`
My preferred next concrete command from your current state would be:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,devices pve_toshiba
“`
That will tell us whether `pve_toshiba-data` contains recoverable VM/LXC volumes, or whether the immediate treasure is only in `pve_toshiba-root`.
—
**Sources:**
– [GNU ddrescue Manual](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html)
– [mount(8) – Linux manual page](https://www.man7.org/linux/man-pages/man8/mount.8.html)
– [pve-docs/pmxcfs.adoc at master · proxmox/pve-docs · GitHub](https://github.com/proxmox/pve-docs/blob/master/pmxcfs.adoc)
## Prompt:
01/06/2026, 07:37:10
Here below are the results of the first few commands. I can mount the drive as an LVM or LVM Thin drive, but LVM Thin “sees” no data and LVM sees 94% full (Proxmox GUI), but CLI sees no files nor are any listed in the LVM’s window in the GUI:
[Attachment: Pasted text.txt]
## Response:
01/06/2026, 07:37:11
> **Considering Proxmox/LVM details and citations**
>
> The user’s query seems to involve current Proxmox/LVM info, potentially as of 2026. While I have some knowledge on the topic, I can probably find more up-to-date details in the official docs. For accuracy, I might reference the file content and just proceed to check a few web sources for smartctl and LVM.
>
> **Citing the uploaded file content directly**
>
> It seems like I can directly cite the uploaded file without needing to use file search. The file is already loaded, so I won’t need to open it again or run additional scans. I can inspect the content in the tether and use it directly for the citation, per the instructions.
>
> **Searching for web resources**
>
> [Storage: LVM Thin – Proxmox VE](https://pve.proxmox.com/wiki/Storage%3A_LVM_Thin)
> [lvmthin (7) — Linux manual page](https://www.man7.org/linux/man-pages/man7/lvmthin.7.html)
> [Smartmontools tutorial: Monitor the health of your disks](https://www.pchardwarepro.com/en/Complete-tutorial-of-the-smartmontools-and-smart-commands-in-Linux/)
> [GNU ddrescue Manual](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html)
> [Proxmox LVM-Thin Storage: Thin Provisioning, Over-Provisioning, and …](https://proxmoxr.com/blog/proxmox-lvm-thin)
> [lvmthin — LVM thin provisioning at Linux.org](https://www.linux.org/docs/man7/lvmthin.html)
> [S.M.A.R.T. – ArchWiki](https://wiki.archlinux.org/title/S.M.A.R.T.)
> [GNU ddrescue Manual – docs.jade.fyi](https://docs.jade.fyi/gnu/ddrescue.html)
> [How to Choose Between LVM and LVM-Thin Storage in Proxmox VE？](https://www.vinchin.com/vm-tips/lvm-vs-lvm-thin-proxmox.html)
> [LVM Thin Provisioning Guide for Production: Pools, Metadata, and …](https://lvmconfig.com/lvm-thin-provisioning-guide.html)
> [Check Hard Drive Health on Linux with SMART & smartmontools](https://std.rocks/gnulinux_smart.html)
> [How to Use ddrescue for Disk Recovery on Ubuntu](https://oneuptime.com/blog/post/2026-03-02-use-ddrescue-disk-recovery-ubuntu/view)
> [Ubuntu Manpage: lvmthin – LVM thin provisioning](https://manpages.ubuntu.com/manpages/xenial/man7/lvmthin.7.html)
> [Strange SMART error on boot disk – TrueNAS General – TrueNAS Community …](https://forums.truenas.com/t/strange-smart-error-on-boot-disk/28136)
> [Invoking ddrescue (GNU ddrescue Manual) – luskinserver.no-ip.org](https://luskinserver.no-ip.org/DOCS/gddrescue/html/Invoking-ddrescue.html)
>
> **Investigating disk and volume issues**
>
> It seems like I need to explain some warnings from SMART data, like the 16,376 reallocated sectors and the failed SMART status. The drive is connected via USB, which might cause some confusion with the aliases. I’ll have to figure out why certain disks aren’t listed correctly and recommend using command-line tools like `lvs` instead of the GUI. There’s some uncertainty about the symlinks for the thin volumes.
>
> Thought for 49s
The SMART result changes the recovery posture: this is no longer “a flaky filesystem”; it is a failing disk with massive sector reallocation. The 94% “full” reading is likely metadata/allocation at the LVM or thin-pool layer, not proof that a mounted directory should show files.
The missing `dm-name-pve_toshiba-data` symlink in your grep output is significant: `root` and `swap` are exposed as normal LVs, but the thin pool or its child volumes may not be fully activated/visible in the same way. I’d stop using the Proxmox GUI for this disk now and interrogate it with `lvs -a`/`thin_dump` only, preferably after imaging.
Carey, this output says: **stop browsing the disk through Proxmox GUI and image it now.** The Toshiba’s SMART report is already in terminal-stage failure: SMART overall-health says **FAILED**, explicitly warns “Drive failure expected in less than 24 hours,” and `Reallocated_Sector_Ct` is `FAILING_NOW` with raw value `16376`. `Pasted text.txt`
The GUI discrepancy is probably not paradoxical:
– **LVM “94% full”** means the block device / pool has allocated extents or thin-pool usage.
– **“No files shown”** is expected for LVM/LVM-thin. LVM is block storage, not a browsable filesystem. Proxmox’s `lvmthin` storage is for VM/CT disk volumes, and thin provisioning allocates blocks when written, not as ordinary files in a directory. ([Proxmox VE](https://pve.proxmox.com/wiki/Storage%3A_LVM_Thin?utm_source=chatgpt.com))
– **LVM-thin seeing no data** usually means either the thin child LVs are not activated/visible, the storage was added to Proxmox incorrectly, or the thin metadata is damaged/unreadable. The Proxmox GUI is the wrong instrument here.
## Immediate safest move
Do not mount it read-write. Do not run repair. Do not use the GUI to add/remove storage definitions. Clone first with ddrescue; its mapfile is essential because it lets you resume and avoids rereading already-rescued regions. ([GNU](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html?utm_source=chatgpt.com))
“`bash
mkdir -p /recovery/toshiba
cd /recovery/toshiba
SRC=/dev/disk/by-id/ata-TOSHIBA_MQ01ABD050_Y2E6SOQLS
ddrescue -n “$SRC” toshiba-MQ01ABD050-Y2E6SOQLS.img toshiba-MQ01ABD050-Y2E6SOQLS.map
ddrescue -d -r3 “$SRC” toshiba-MQ01ABD050-Y2E6SOQLS.img toshiba-MQ01ABD050-Y2E6SOQLS.map
“`
Because the drive is also appearing through a USB-style alias, direct SATA would be preferable if available. USB bridges can add resets/timeouts during marginal-disk recovery.
## If you must continue live, use inspection only
First, capture the real LVM topology:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba
vgs -o vg_name,vg_attr,vg_size,vg_free,pv_count,lv_count
pvs -o pv_name,vg_name,pv_size,pv_free,pv_attr,devices
dmsetup ls –tree
ls -l /dev/mapper/pve_toshiba*
“`
The most important question is whether `lvs -a` shows child volumes such as:
“`text
vm-100-disk-0
vm-101-disk-0
subvol-102-disk-0
base-9000-disk-0
“`
If those do **not** appear, then Proxmox has no child guest volumes to display, or the thin metadata is not being interpreted correctly.
## Check the host root filesystem
The `root` LV is likely the old Proxmox host filesystem:
“`bash
blkid /dev/pve_toshiba/root
file -sL /dev/pve_toshiba/root
mkdir -p /mnt/toshiba-root
“`
For ext4:
“`bash
mount -t ext4 -o ro,noload /dev/pve_toshiba/root /mnt/toshiba-root
“`
For XFS:
“`bash
mount -t xfs -o ro,norecovery,nouuid /dev/pve_toshiba/root /mnt/toshiba-root
“`
Then check:
“`bash
ls -la /mnt/toshiba-root
find /mnt/toshiba-root -maxdepth 3 -type f | head -100
“`
Preserve Proxmox config immediately:
“`bash
mkdir -p /recovery/toshiba-proxmox-config
rsync -aHAX –numeric-ids –ignore-errors \
/mnt/toshiba-root/etc/ \
/recovery/toshiba-proxmox-config/etc/
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db \
/recovery/toshiba-proxmox-config/ 2>/dev/null || true
“`
## Inspect thin-pool metadata
Only do this read-only, ideally on the ddrescue image/clone:
“`bash
apt install thin-provisioning-tools
thin_check /dev/mapper/pve_toshiba-data_tmeta
thin_dump /dev/mapper/pve_toshiba-data_tmeta > /recovery/toshiba/thin-metadata.xml
grep -E ‘
## If child VM disks appear
For a VM LV:
“`bash
lsblk -f /dev/pve_toshiba/vm-100-disk-0
kpartx -ar /dev/pve_toshiba/vm-100-disk-0
lsblk -f
“`
Then mount the mapped partition read-only:
“`bash
mkdir -p /mnt/vm100
mount -o ro,noload /dev/mapper/pve_toshiba-vm–100–disk–0p1 /mnt/vm100
“`
For an LXC subvolume:
“`bash
mkdir -p /mnt/ct102
mount -o ro,noload /dev/pve_toshiba/subvol-102-disk-0 /mnt/ct102
“`
## What I would not do
Avoid all of this on the Toshiba original:
“`bash
fsck -y
xfs_repair
lvconvert –repair
thin_repair
vgcfgrestore
mount -o rw
Proxmox GUI remove/add/reinitialize storage
“`
The next most useful output to paste is:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba
dmsetup ls –tree
blkid /dev/pve_toshiba/root /dev/pve_toshiba/data 2>/dev/null
“`
—
**Sources:**
– [Storage: LVM Thin – Proxmox VE](https://pve.proxmox.com/wiki/Storage%3A_LVM_Thin?utm_source=chatgpt.com)
– [GNU ddrescue Manual](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html?utm_source=chatgpt.com)
## Prompt:
01/06/2026, 07:44:27
I may have a way to circumvent this whole thing. I repaired the server by replacing the drive and the customer now is running the prior VM there, but one of the disks is not yet registered. See this output from the repaired Proxmox server:
###
Linux pve 6.5.11-8-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.11-8 (2024-01-30T12:27Z) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sun May 31 12:27:25 CEST 2026 on pts/0
root@pve:~# lsblk -o +MODEL,SERIAL,WWN
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS MODEL SERIAL WWN
sda 8:0 0 476.9G 0 disk Samsu S12SNE 0x50025385501b4b3a
├─sda1 8:1 0 1007K 0 part 0x50025385501b4b3a
├─sda2 8:2 0 1G 0 part /boot/efi 0x50025385501b4b3a
└─sda3 8:3 0 475.9G 0 part 0x50025385501b4b3a
├─pve-swap 252:0 0 8G 0 lvm [SWAP]
├─pve-root 252:1 0 96G 0 lvm /
├─pve-data_tmeta 252:2 0 3.6G 0 lvm
│ └─pve-data 252:6 0 348.8G 0 lvm
└─pve-data_tdata 252:3 0 348.8G 0 lvm
└─pve-data 252:6 0 348.8G 0 lvm
sdb 8:16 0 465.8G 0 disk ST500 S2ANQP 0x5000c5006d387ead
└─sdb1 8:17 0 465.8G 0 part 0x5000c5006d387ead
sr0 11:0 1 1024M 0 rom HL-DT K2BFAL 0x5001480000000000
nvme0n1 259:0 0 1.8T 0 disk Nexto 511230 eui.7cef407f9a300222
├─local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
│ 252:4 0 15.9G 0 lvm
│ └─local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
│ 252:7 0 1.8T 0 lvm
│ ├─local–lvm–nvme0n1-local–lvm–nvme0n1 252:8 0 1.8T 1 lvm
│ ├─local–lvm–nvme0n1-vm–101–disk–0 252:9 0 1T 0 lvm
│ ├─local–lvm–nvme0n1-vm–101–disk–1 252:10 0 1T 0 lvm
│ ├─local–lvm–nvme0n1-vm–100–disk–0 252:11 0 4M 0 lvm
│ ├─local–lvm–nvme0n1-vm–100–disk–1 252:12 0 2T 0 lvm
│ └─local–lvm–nvme0n1-vm–100–disk–2 252:13 0 4M 0 lvm
└─local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
252:5 0 1.8T 0 lvm
└─local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
252:7 0 1.8T 0 lvm
├─local–lvm–nvme0n1-local–lvm–nvme0n1 252:8 0 1.8T 1 lvm
├─local–lvm–nvme0n1-vm–101–disk–0 252:9 0 1T 0 lvm
├─local–lvm–nvme0n1-vm–101–disk–1 252:10 0 1T 0 lvm
├─local–lvm–nvme0n1-vm–100–disk–0 252:11 0 4M 0 lvm
├─local–lvm–nvme0n1-vm–100–disk–1 252:12 0 2T 0 lvm
└─local–lvm–nvme0n1-vm–100–disk–2 252:13 0 4M 0 lvm
root@pve:~#
###
## Response:
01/06/2026, 07:44:29
> **Browsing for Proxmox disk attachment instructions**
>
> [[SOLVED] – qm option to reattach unused disks | Proxmox Support Forum](https://forum.proxmox.com/threads/qm-option-to-reattach-unused-disks.48747/)
> [qm (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qm.1.html)
> [How to Use the ‘qm rescan’ Command (with Examples)](https://commandmasters.com/commands/qm-rescan-linux/)
> [qm-disk-rescan man | Linux Command Library](https://linuxcommandlibrary.com/man/qm-disk-rescan)
> [qm-rescan: Rescan all storages and update disk sizes and unused disk …](https://forrestcli.com/context/qm-rescan/qm-rescan%3Atldr%3A00247)
> [Rescan all storages and update disk sizes – qm rescan](https://community.webminal.org/t/rescan-all-storages-and-update-disk-sizes-qm-rescan/7794)
>
> **Investigating potential disk issues and VM configuration**
>
> I need to figure out if the “unregistered disk” might be related to /dev/sdb1 or an unattached LV. I’ll check commands like `qm config`, `lvs`, `pvesm list`, and maybe run `qm rescan –dryrun` to verify syntax, especially regarding options for VMID. I need to clarify this to avoid confusion.
>
> **Explaining disk registration issues in Proxmox VM storage**
>
> **Clarifying and refining search for specific resources**
>
> [qm (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qm.1.html)
> [[SOLVED] – qm option to reattach unused disks | Proxmox Support Forum](https://forum.proxmox.com/threads/qm-option-to-reattach-unused-disks.48747/)
> [Examples of qm-rescan Command in Linux – Command Examples](https://commandexamples.com/linux/qm-rescan)
> [How to Use the ‘qm rescan’ Command (with Examples)](https://commandmasters.com/commands/qm-rescan-linux/)
> [Qm Rescan – Dendron – TLDR](https://tldr.dendron.so/notes/linux.qm-rescan.html)
> [Rescan all storages and update disk sizes – qm rescan](https://community.webminal.org/t/rescan-all-storages-and-update-disk-sizes-qm-rescan/7794)
> [qm disk rescan | tldr InBrowser.App](https://tldr.inbrowser.app/pages/linux/qm-disk-rescan)
> [Command Line Tools | proxmox/pve-docs | DeepWiki](https://deepwiki.com/proxmox/pve-docs/8.2-command-line-tools)
> [cheat-sheets/infra/proxmox.md at main · ChristianLempa/cheat … – GitHub](https://github.com/ChristianLempa/cheat-sheets/blob/main/infra/proxmox.md)
> [qm-disk-rescan man | Linux Command Library](https://linuxcommandlibrary.com/man/qm-disk-rescan)
> [QEMU virtual disks: clearing unused blocks | Nelson’s log](https://nelsonslog.wordpress.com/2024/01/04/qemu-virtual-disks-clearing-unused-blocks/)
> [Proxmox Backup Headaches: The Case of the Phantom Disk](https://www.archy.net/proxmox-backup-headaches-the-case-of-the-phantom-disk/)
> [常用命令之Proxmox qm命令_proxmox重启命令-CSDN博客](https://blog.csdn.net/carefree2005/article/details/130152674)
> [Proxmox Cheatsheet | ProxmoxCheatsheet](https://phucbone.github.io/ProxmoxCheatsheet/)
> [Proxmox – Leo’s Notes](https://leo.leung.xyz/wiki/Proxmox)
> [Some commonly used Proxmox VE terminal/console/SSH commands](https://dannyda.com/2023/10/27/some-commonly-used-proxmox-ve-terminal-console-ssh-commands/)
> [Operating system commands – linux-man.cn](https://www.linux-man.cn/en/linux/qm-disk/)
> [Rescan Proxmox Disks – Blog & Wiki – Bian Xi](https://blog.bianxi.com/2022/01/25/rescan-proxmox-disks/)
>
> **Verifying Proxmox commands for disk rescan**
>
> I’m working through verifying the right commands for rescan in Proxmox. I plan to start by backing up configs using `cp /etc/pve/qemu-server/*.conf`. It’s unclear whether to use `qm disk rescan` or `qm rescan`. I’ll check the docs, then do a dry-run with `qm disk rescan` to confirm the correct procedure.
>
> Thought for 27s
Yes — this looks like a much better route than forcing recovery from the failing Toshiba. The repaired host already sees the VM disk LVs on the NVMe thin pool; the missing piece is probably only the VM config registration.
Yes – this may completely bypass the dying Toshiba.
Your repaired Proxmox host already sees several VM disk volumes on the NVMe thin pool:
“`text
local-lvm-nvme0n1:vm-101-disk-0 1T
local-lvm-nvme0n1:vm-101-disk-1 1T
local-lvm-nvme0n1:vm-100-disk-0 4M
local-lvm-nvme0n1:vm-100-disk-1 2T
local-lvm-nvme0n1:vm-100-disk-2 4M
“`
The **4M disks** are almost certainly EFI/TPM-style helper disks, not customer data. The likely missing “real” data disk is one of:
“`text
vm-101-disk-1 1T
vm-100-disk-1 2T
“`
Proxmox’s `qm` tooling has a rescan function for unused disk images; current docs describe `qm disk rescan` as rescanning storages and updating disk sizes / unused disk images. ([Proxmox VE](https://pve.proxmox.com/pve-docs/qm.1.html?utm_source=chatgpt.com)) Proxmox forum guidance also commonly uses `qm rescan
## First: capture what is currently registered
Run these on the repaired server:
“`bash
qm list
qm config 100
qm config 101
pvesm status
pvesm list local-lvm-nvme0n1
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,devices
“`
I especially want to see whether `qm config 100` or `qm config 101` already contains lines like:
“`text
scsi0:
scsi1:
sata0:
virtio0:
unused0:
efidisk0:
tpmstate0:
“`
## Then try the safe rescan path
Depending on the exact Proxmox version, one of these forms should work:
“`bash
qm disk rescan –dryrun 1 –vmid 100
qm disk rescan –dryrun 1 –vmid 101
“`
or:
“`bash
qm rescan –dryrun true 100
qm rescan –dryrun true 101
“`
Then, if the dry run shows it will add the missing disk as `unused0` or similar:
“`bash
qm disk rescan –vmid 100
qm disk rescan –vmid 101
“`
or the older form:
“`bash
qm rescan 100
qm rescan 101
“`
After that:
“`bash
qm config 100
qm config 101
“`
If successful, Proxmox should show something like:
“`text
unused0: local-lvm-nvme0n1:vm-100-disk-1
“`
or:
“`text
unused0: local-lvm-nvme0n1:vm-101-disk-1
“`
Then in the GUI: **VM → Hardware → Unused Disk → Edit/Add**.
## If rescan does not attach it, attach manually
For VM 101, if `vm-101-disk-1` is the missing data disk:
“`bash
qm set 101 –scsi1 local-lvm-nvme0n1:vm-101-disk-1
“`
For VM 100, if `vm-100-disk-1` is the missing data disk:
“`bash
qm set 100 –scsi1 local-lvm-nvme0n1:vm-100-disk-1
“`
But before doing that, make sure the target slot is free:
“`bash
qm config 100 | egrep ‘^(scsi|sata|virtio|ide|unused|efidisk|tpmstate)’
qm config 101 | egrep ‘^(scsi|sata|virtio|ide|unused|efidisk|tpmstate)’
“`
If `scsi1` is already occupied, choose `scsi2`, `scsi3`, etc.
## Important safety note
Do **not** attach the same disk to the wrong VM while that VM is running. I would shut down the target VM first:
“`bash
qm shutdown 100
# or
qm shutdown 101
“`
Then attach the disk, then start it:
“`bash
qm start 100
# or
qm start 101
“`
## My read of the layout
Most likely:
“`text
VM 101:
vm-101-disk-0 1T
vm-101-disk-1 1T
VM 100:
vm-100-disk-0 4M helper disk
vm-100-disk-1 2T main/data disk
vm-100-disk-2 4M helper disk
“`
So if the customer says “one of the big disks is missing,” I’d first inspect `qm config 100` and `qm config 101`. If VM 100 is the prior VM, then `vm-100-disk-1` is almost certainly the disk to re-register.
—
**Sources:**
– [qm (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qm.1.html?utm_source=chatgpt.com)
– [[SOLVED] – qm option to reattach unused disks | Proxmox Support Forum](https://forum.proxmox.com/threads/qm-option-to-reattach-unused-disks.48747/?utm_source=chatgpt.com)
## Prompt:
01/06/2026, 07:48:09
Here is most of what you needed:
[Attachment: Pasted text.txt]
## Response:
01/06/2026, 07:48:10
> **Deciding on sources for answering Proxmox questions**
>
> I’m trying to decide whether to use the web for up-to-date Proxmox commands or just rely on the file provided. Proxmox’s commands might be stable, but there could be differences with version 8. I could check official docs or just cite the file, but I want to make sure the answer is accurate.
>
> **Looking up Proxmox qm set syntax**
>
> I should probably cite the file, but I’m also wondering if I need to get the latest Proxmox information. The syntax might have changed, so I think it’s better to check the official Proxmox documentation just to be sure, especially for commands like “qm set.” Let’s go ahead and browse for the details.
>
> **Browsing Proxmox QM documentation for syntax guidance**
>
> [qm (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qm.1.html)
> [qm-disk-rescan man | Linux Command Library](https://linuxcommandlibrary.com/man/qm-disk-rescan)
> [How to Use the ‘qm rescan’ Command (with Examples)](https://commandmasters.com/commands/qm-rescan-linux/)
> [Rescan all storages and update disk sizes – qm rescan](https://community.webminal.org/t/rescan-all-storages-and-update-disk-sizes-qm-rescan/7794)
> [qm-rescan: Rescan all storages and update disk sizes and unused disk …](https://forrestcli.com/context/qm-rescan/qm-rescan%3Atldr%3A00247)
> [Proxmox Cheatsheet | ProxmoxCheatsheet](https://phucbone.github.io/ProxmoxCheatsheet/)
> [cheat-sheets/infra/proxmox.md at main · ChristianLempa/cheat … – GitHub](https://github.com/ChristianLempa/cheat-sheets/blob/main/infra/proxmox.md)
> [Examples of qm-rescan Command in Linux – Command Examples](https://commandexamples.com/linux/qm-rescan)
>
> **Final update with commands and citations**
>
> The answer needs to include citations from both the file and official web sources. I’ll be careful with the VM running and not ask too many details right away, but I can follow up later. The current active configuration shows only sata0, with some orphaned VM disks. For determining which disk holds the filesystem, I’d need to use qemu-nbd or kpartx for offline partition reading.
>
> Thought for 24s
This output is very revealing: the “missing disk” is probably not on the dying Toshiba at all. Your repaired server has orphaned thin volumes tagged for VMID `101`, while only VM `100` exists; additionally, VM 100’s `description` field contains old, escaped disk lines that are not active config entries.
Yes – this output strongly suggests the bypass path is real.
## What the repaired server is telling us
Only **VM 100** exists and is running:
“`text
100 IN-Windows-Server-2022 running
“`
Its active config currently has only one real attached disk:
“`text
sata0: local-lvm-nvme0n1:vm-100-disk-1,discard=on,size=2T,ssd=1
“`
plus the normal OVMF/TPM helper disks:
“`text
efidisk0: vm-100-disk-0 4M
tpmstate0: vm-100-disk-2 4M
“`
The important part: the Proxmox storage still contains two disks assigned to **VMID 101**, but there is no VM 101 registered:
“`text
local-lvm-nvme0n1:vm-101-disk-0 1T
local-lvm-nvme0n1:vm-101-disk-1 1T
“`
Your `lvs` output says `vm-101-disk-1` has **19.10% actual thin data usage**, while `vm-101-disk-0` has only **0.03%**. That makes `vm-101-disk-1` the prime suspect for the missing customer data disk. `Pasted text.txt`
Also, this line in `qm config 100` is not active VM hardware:
“`text
description: sata1%3A local-lvm-nvme0n1%3Avm-100-disk-3…
“`
That is an escaped note in the VM **description** field, not a live `sata1:` config entry. So VM 100 probably *used to* have additional disks, but they are currently not attached. `Pasted text.txt`
Proxmox’s `qm` man page describes unattached disk volumes as `unused[n]` entries when they are removed from config rather than physically deleted, and `qm disk rescan` is meant to update disk sizes and unused disk images. ([Proxmox VE](https://pve.proxmox.com/pve-docs/qm.1.html?utm_source=chatgpt.com))
## I would do this next
Because VM 100 is running, first do discovery only:
“`bash
qm disk rescan –dryrun 1 –vmid 100
qm config 100
pvesm list local-lvm-nvme0n1
“`
If the dry run looks sane, run:
“`bash
qm disk rescan –vmid 100
qm config 100
“`
But I suspect `qm disk rescan –vmid 100` may **not** automatically attach the `vm-101-*` disks, because their volume names belong to VMID 101.
## Safest direct registration path
Shut down VM 100 first:
“`bash
qm shutdown 100
“`
Then attach the likely missing data disk as a secondary SATA disk:
“`bash
qm set 100 –sata1 local-lvm-nvme0n1:vm-101-disk-1,backup=0,discard=on,ssd=1
“`
Then start VM 100:
“`bash
qm start 100
“`
Inside Windows Server, check **Disk Management**. It may show the disk as offline because of Windows SAN policy or signature collision. Do **not** initialize or format it. Bring it online only if it clearly shows the expected existing partitions/filesystem.
## Even safer: attach the low-use one later, not first
I would not attach both `vm-101-disk-0` and `vm-101-disk-1` at once. First try:
“`bash
local-lvm-nvme0n1:vm-101-disk-1
“`
because it has real data usage. The `vm-101-disk-0` volume at `0.03%` may be empty, newly created, metadata-only, or a placeholder. `Pasted text.txt`
## Optional host-side read-only identification before attaching
To inspect the likely disk without presenting it to Windows:
“`bash
apt install -y libguestfs-tools
virt-filesystems –long –parts –blkdevs –filesystems \
-a /dev/local-lvm-nvme0n1/vm-101-disk-1
“`
Or with basic tools:
“`bash
fdisk -l /dev/local-lvm-nvme0n1/vm-101-disk-1
blkid /dev/local-lvm-nvme0n1/vm-101-disk-1
“`
For partition mapping read-only:
“`bash
kpartx -ar /dev/local-lvm-nvme0n1/vm-101-disk-1
lsblk -f
“`
If NTFS partitions appear, mount read-only only:
“`bash
mkdir -p /mnt/vm101disk1
mount -t ntfs3 -o ro /dev/mapper/local–lvm–nvme0n1-vm–101–disk–1p1 /mnt/vm101disk1
ls -la /mnt/vm101disk1
umount /mnt/vm101disk1
kpartx -d /dev/local-lvm-nvme0n1/vm-101-disk-1
“`
## My diagnosis
The most likely situation is:
“`text
VM 100 exists and boots from:
vm-100-disk-1 2T
Missing/orphaned data disk is probably:
vm-101-disk-1 1T, 19.10% used
Less likely / probably empty or auxiliary:
vm-101-disk-0 1T, 0.03% used
“`
The command I would actually run after shutting down VM 100 is:
“`bash
qm set 100 –sata1 local-lvm-nvme0n1:vm-101-disk-1,backup=0,discard=on,ssd=1
“`
Then boot and inspect from Windows Disk Management.
—
**Sources:**
– [qm (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qm.1.html?utm_source=chatgpt.com)
## Prompt:
01/06/2026, 08:03:33
I called the customer and shut down the VM.
Before we go this way, I have the feeling the disk we need is /sdb1
###
Linux pve 6.5.11-8-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.11-8 (2024-01-30T12:27Z) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Mon Jun 1 07:57:51 CEST 2026 on pts/0
root@pve:~# lsblk -o +MODEL,SERIAL,WWN
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS MODEL SERIAL WWN
sda 8:0 0 476.9G 0 disk Samsu S12SNE 0x50025385501b4b3a
├─sda1 8:1 0 1007K 0 part 0x50025385501b4b3a
├─sda2 8:2 0 1G 0 part /boot/efi 0x50025385501b4b3a
└─sda3 8:3 0 475.9G 0 part 0x50025385501b4b3a
├─pve-swap 252:0 0 8G 0 lvm [SWAP]
├─pve-root 252:1 0 96G 0 lvm /
├─pve-data_tmeta 252:2 0 3.6G 0 lvm
│ └─pve-data 252:6 0 348.8G 0 lvm
└─pve-data_tdata 252:3 0 348.8G 0 lvm
└─pve-data 252:6 0 348.8G 0 lvm
sdb 8:16 0 465.8G 0 disk ST500 S2ANQP 0x5000c5006d387ead
└─sdb1 8:17 0 465.8G 0 part 0x5000c5006d387ead
sr0 11:0 1 1024M 0 rom HL-DT K2BFAL 0x5001480000000000
nvme0n1 259:0 0 1.8T 0 disk Nexto 511230 eui.7cef407f9a300222
├─local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
│ 252:4 0 15.9G 0 lvm
│ └─local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
│ 252:7 0 1.8T 0 lvm
│ ├─local–lvm–nvme0n1-local–lvm–nvme0n1 252:8 0 1.8T 1 lvm
│ ├─local–lvm–nvme0n1-vm–101–disk–0 252:9 0 1T 0 lvm
│ ├─local–lvm–nvme0n1-vm–101–disk–1 252:10 0 1T 0 lvm
│ ├─local–lvm–nvme0n1-vm–100–disk–0 252:11 0 4M 0 lvm
│ ├─local–lvm–nvme0n1-vm–100–disk–1 252:12 0 2T 0 lvm
│ └─local–lvm–nvme0n1-vm–100–disk–2 252:13 0 4M 0 lvm
└─local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
252:5 0 1.8T 0 lvm
└─local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
252:7 0 1.8T 0 lvm
├─local–lvm–nvme0n1-local–lvm–nvme0n1 252:8 0 1.8T 1 lvm
├─local–lvm–nvme0n1-vm–101–disk–0 252:9 0 1T 0 lvm
├─local–lvm–nvme0n1-vm–101–disk–1 252:10 0 1T 0 lvm
├─local–lvm–nvme0n1-vm–100–disk–0 252:11 0 4M 0 lvm
├─local–lvm–nvme0n1-vm–100–disk–1 252:12 0 2T 0 lvm
└─local–lvm–nvme0n1-vm–100–disk–2 252:13 0 4M 0 lvm
root@pve:~#
###
## Response:
01/06/2026, 08:03:34
> **Clarifying the user’s inquiry about Proxmox**
>
> It seems like the user may want to clarify a technical issue with Proxmox. I’ve already referenced Proxmox before, so I might not need to pull new details unless something’s changed. The uploaded file might be useful for context, especially as it includes a description with **sdb** serial info. I’ll use that as reference.
>
> **Preparing to cite file content**
>
> I need to provide an answer to the user and make sure to cite the relevant lines from the file. I’ll need to use mclick to get the line numbers for accurate referencing. Once I have the line numbers, I’ll include them in the response for clarity.
>
> **Clarifying citation and sdb1 validation**
>
> It seems mclick didn’t show line numbers, but citation requires ranges. I might not include them, but instead rely on referencing the file without the lines. I’ll validate the user’s suspicion about **sdb1**, as the current **lsblk** info shows **sdb** but no mountpoints. Previous configuration notes it’s a passthrough disk, but it isn’t in the active config.
>
> Thought for 23s
That instinct is plausible. The previous VM config actually contains a dormant clue: the description had an escaped old disk line pointing at `/dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01`, and your current `sdb` is the ST500 drive with that serial prefix.
Yes – your feeling is probably right, with one important correction:
**The disk to re-register is probably the ST500 physical disk, but not `/dev/sdb1` directly.**
The old VM config clue says the VM previously had:
“`text
sata2: /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
“`
That line is currently trapped inside the VM’s `description:` field, not active hardware config, but it matches your current `sdb` disk: `ST500… S2ANQP…`, 465.8G. `Pasted text.txt`
So I would reattach the **whole physical disk by stable ID**, not the partition:
“`bash
/dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01
“`
not:
“`bash
/dev/sdb1
“`
and not:
“`bash
/dev/sdb
“`
because `/dev/sdb` can change after reboot.
## First verify the exact by-id path
Run:
“`bash
ls -l /dev/disk/by-id/ | grep -E ‘ST500|S2ANQP|5000c5006d387ead’
blkid /dev/sdb /dev/sdb1
file -sL /dev/sdb
file -sL /dev/sdb1
“`
You should see a by-id entry like:
“`text
ata-ST500DM002-1BD142_S2ANQP01 -> ../../sdb
ata-ST500DM002-1BD142_S2ANQP01-part1 -> ../../sdb1
“`
The old config used the **non-`part1`** path, meaning the whole disk was passed through to the VM.
## Make sure the host is not using it
Before attaching:
“`bash
findmnt | grep sdb || true
lsof /dev/sdb /dev/sdb1 2>/dev/null || true
fuser -v /dev/sdb /dev/sdb1 2>/dev/null || true
“`
If nothing is mounted or using it, proceed.
## Attach it back to VM 100 as `sata2`
Since the old dormant config says `sata2`, I would restore exactly that bus/slot:
“`bash
qm set 100 –sata2 /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0
“`
Then confirm:
“`bash
qm config 100
“`
You should now see an active line like:
“`text
sata2: /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
“`
Then start the VM:
“`bash
qm start 100
“`
Inside Windows: open **Disk Management**. If the disk appears offline, bring it online only if it shows the expected existing partitions/filesystem. Do **not** initialize, convert, or format it.
## Why not `/dev/sdb1`?
Because the old config passed the whole disk, not the partition. Passing `/dev/sdb1` would present only the partition as a virtual disk, which can confuse Windows because the guest no longer sees the original disk layout/signature/partition table.
So the likely correct command is:
“`bash
qm set 100 –sata2 /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0
“`
That looks more likely than attaching the orphaned `vm-101-disk-*` volumes right now.
## Prompt:
01/06/2026, 08:14:12
The drive is now correctly attached and is fine, but it sadly does not contain the data we need which is indeed on the Toshiba.
## Response:
01/06/2026, 08:14:13
> **Considering file citations for technical answer**
>
> I’m thinking, no web might be needed unless it’s a niche case, but I could refer to some files uploaded earlier. Since the user is asking for the current state, I can cite those previous files without searching again. I’ll note that “turn3file0” was a mistake and avoid it. I’ll mention things like Toshiba recovery and high-priority data extraction.
>
> **Planning disk recovery from Toshiba drive**
>
> I should guide through the process of recovering from the Toshiba drive by imaging it as a block. The original drive holds Proxmox root/data, especially content in the thin pool. It’s crucial to avoid mounting the Toshiba further. After that, I’ll present a phased workflow including commands, disk attachment, and LVM settings.
>
> Thought for 22s
Understood — then the ST500 detour was useful because it eliminated a clean candidate. We’re back to the Toshiba, and because its SMART state is already “FAILING_NOW,” the next move should be imaging/extraction discipline, not more Proxmox GUI exploration.
Then the path is clear: **the Toshiba is the source of truth**, and we should now stop trying to “register” things and move into forensic-style recovery.
The Toshiba SMART state was severe: overall health **FAILED**, `Reallocated_Sector_Ct` was `FAILING_NOW` with raw value `16376`, and the drive warned: “Drive failure expected in less than 24 hours. SAVE ALL DATA.” `Pasted text.txt`
## Immediate priority: ddrescue image of the Toshiba
On the non-production Proxmox recovery server, use the stable Toshiba ID:
“`bash
SRC=/dev/disk/by-id/ata-TOSHIBA_MQ01ABD050_Y2E6SOQLS
“`
Make sure your destination is a **normal mounted filesystem** with at least 500 GB free, for example `/recovery`, not an LVM-thin raw device.
“`bash
apt update
apt install -y gddrescue lvm2 thin-provisioning-tools kpartx
mkdir -p /recovery/toshiba
cd /recovery/toshiba
“`
First pass – fast, non-aggressive:
“`bash
ddrescue -n “$SRC” \
toshiba-MQ01ABD050-Y2E6SOQLS.img \
toshiba-MQ01ABD050-Y2E6SOQLS.map
“`
Second pass – limited retries:
“`bash
ddrescue -d -r3 “$SRC” \
toshiba-MQ01ABD050-Y2E6SOQLS.img \
toshiba-MQ01ABD050-Y2E6SOQLS.map
“`
After that, **disconnect or stop using the physical Toshiba**. Work from the image.
—
## Work from the image
Attach the rescued image read-only:
“`bash
LOOP=$(losetup –find –partscan –read-only –show /recovery/toshiba/toshiba-MQ01ABD050-Y2E6SOQLS.img)
echo “$LOOP”
lsblk -f “$LOOP”
“`
You should get something like:
“`text
/dev/loop0
/dev/loop0p1
/dev/loop0p2
/dev/loop0p3
“`
The important partition is likely:
“`bash
${LOOP}p3
“`
because the original Toshiba layout showed `/dev/sdc3` as the LVM PV containing `pve_toshiba-root` and `pve_toshiba-data`.
Now scan the LVM from the image:
“`bash
pvscan –cache “${LOOP}p3”
pvs
vgs
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices
“`
If the VG name collides or looks messy, import the clone under a safe new name:
“`bash
vgimportclone –basevgname pve_toshiba_img “${LOOP}p3”
vgchange –readonly -ay pve_toshiba_img
“`
Then inspect again:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba_img
“`
—
## Recover Proxmox host config first
Mount the old root LV read-only:
“`bash
mkdir -p /mnt/toshiba-root
blkid /dev/pve_toshiba_img/root
file -sL /dev/pve_toshiba_img/root
“`
For ext4:
“`bash
mount -t ext4 -o ro,noload /dev/pve_toshiba_img/root /mnt/toshiba-root
“`
For XFS:
“`bash
mount -t xfs -o ro,norecovery,nouuid /dev/pve_toshiba_img/root /mnt/toshiba-root
“`
Then copy the old Proxmox config database:
“`bash
mkdir -p /recovery/toshiba-proxmox-config
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db \
/recovery/toshiba-proxmox-config/ 2>/dev/null || true
cp -a /mnt/toshiba-root/etc \
/recovery/toshiba-proxmox-config/etc 2>/dev/null || true
“`
That `config.db` may tell us exactly which VM disks existed, their VMIDs, and where they were attached.
You can inspect it safely like this:
“`bash
mkdir -p /tmp/pmxcfs-inspect
sqlite3 /recovery/toshiba-proxmox-config/config.db \
“select name, data from tree where name like ‘%.conf’;” \
> /recovery/toshiba-proxmox-config/vm-configs.txt
cat /recovery/toshiba-proxmox-config/vm-configs.txt
“`
—
## Then inspect the Toshiba thin pool
The old Toshiba `data` LV is likely an LVM-thin pool. We need to see whether it still contains thin devices.
Run:
“`bash
thin_check /dev/pve_toshiba_img/data_tmeta
thin_dump /dev/pve_toshiba_img/data_tmeta > /recovery/toshiba/thin-metadata.xml
grep -E ‘
If normal LVM activation shows actual child LVs such as:
“`text
vm-100-disk-0
vm-101-disk-0
subvol-…
“`
then we can mount or export those.
—
## If VM disk LVs appear
Example:
“`bash
lsblk -f /dev/pve_toshiba_img/vm-100-disk-0
fdisk -l /dev/pve_toshiba_img/vm-100-disk-0
“`
Map partitions read-only:
“`bash
kpartx -ar /dev/pve_toshiba_img/vm-100-disk-0
lsblk -f
“`
For NTFS:
“`bash
mkdir -p /mnt/recovered-vm-disk
mount -t ntfs3 -o ro /dev/mapper/
ls -la /mnt/recovered-vm-disk
“`
Then copy out:
“`bash
mkdir -p /recovery/customer-data
rsync -aHAX –numeric-ids –info=progress2 –ignore-errors \
/mnt/recovered-vm-disk/ \
/recovery/customer-data/
“`
—
## If no VM disk LVs appear
Then the next artifact to inspect is the thin metadata dump and the old `config.db`.
The critical files/output will be:
“`bash
/recovery/toshiba-proxmox-config/vm-configs.txt
/recovery/toshiba/thin-metadata.xml
“`
and this command output:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba_img
“`
My working diagnosis now is:
“`text
ST500 physical disk: correctly reattached, but not the needed data.
NVMe orphan vm-101 disks: probably unrelated/newer residue.
Toshiba: contains the missing old Proxmox LVM-thin data or old VM config mapping.
“`
So: **image Toshiba first, then recover from the image, then use old `config.db` + thin metadata to identify the actual missing VM disk.**
## Prompt:
02/06/2026, 05:45:02
Here is what I have right now:
###
root@hv03 26-06-05:42:57:
root@hv03 26-06-05:43:20: pvs
WARNING: Not using device /dev/loop1p3 for PV lquTbp-Lpiw-Hnb3-4lwY-C0ZZ-SVj5-fKYbAP.
WARNING: PV lquTbp-Lpiw-Hnb3-4lwY-C0ZZ-SVj5-fKYbAP prefers device /dev/loop0p3 because device was seen first.
PV VG Fmt Attr PSize PFree
/dev/loop0p3 pve_toshiba lvm2 a– <464.76g 16.00g
/dev/sda3 pve lvm2 a-- <930.51g 16.00g
/dev/sdb HDDsdb lvm2 a-- 931.51g 120.00m
root@hv03 26-06-05:43:30: vgs
WARNING: Not using device /dev/loop1p3 for PV lquTbp-Lpiw-Hnb3-4lwY-C0ZZ-SVj5-fKYbAP.
WARNING: PV lquTbp-Lpiw-Hnb3-4lwY-C0ZZ-SVj5-fKYbAP prefers device /dev/loop0p3 because device was seen first.
VG #PV #LV #SN Attr VSize VFree
HDDsdb 1 1 0 wz--n- 931.51g 120.00m
pve 1 3 0 wz--n- <930.51g 16.00g
pve_toshiba 1 3 0 wz--n- <464.76g 16.00g
root@hv03 26-06-05:43:32: pwd
/mnt/pve/KeepE/images
root@hv03 26-06-05:44:18:
###
## Response:
02/06/2026, 05:45:04
> **Providing guidance for Proxmox issue**
>
> It seems the user hasn’t uploaded a file, so there’s no need for a new citation. I’ll just focus on advising based on the provided text. Since it’s about Proxmox commands, there’s no need to browse, but I should caution the user about the warning regarding duplicate PVs. I’ll recommend detaching the unnecessary loop carefully.
>
> Thought for 21s
This is actually a good sign: the Toshiba VG is visible from the image/loop device, and it still has `16G` free, matching the old Proxmox-style layout. The duplicate PV warning is not data loss; it means the same cloned PV is visible twice, likely through two loop devices.
Good — `pve_toshiba` is now visible from the rescue image/loop device:
“`text
/dev/loop0p3 pve_toshiba lvm2 a– <464.76g 16.00g
```
The warning means the **same LVM PV UUID** is visible twice:
```text
/dev/loop0p3 seen first
/dev/loop1p3 duplicate, ignored
```
That is not fatal. It usually means the same image was attached twice with `losetup`, or both an image and a clone of it are visible. For now, LVM is using `/dev/loop0p3`, so let’s interrogate that path.
## First: see what loop0 and loop1 really are
Run:
```bash
losetup -a | egrep 'loop0|loop1|toshiba|TOSHIBA|KeepE'
lsblk -o NAME,RO,SIZE,TYPE,FSTYPE,MOUNTPOINTS /dev/loop0 /dev/loop1 2>/dev/null
“`
If both point to the same image file, detach the ignored one:
“`bash
losetup -d /dev/loop1
“`
Only do that if `loop1` is clearly the duplicate and nothing is mounted from it.
## Now get the decisive LVM view
Run this exactly:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba
“`
That tells us whether `pve_toshiba-data` is merely a thin pool, whether its hidden metadata/data LVs are intact, and whether any guest child volumes are visible.
Given your `vgs` says `#LV 3`, I expect the visible logical volumes are probably only:
“`text
swap
root
data
“`
If so, that means no VM child volumes are being exposed normally yet, and we must inspect the thin metadata directly.
## Mount old root read-only and recover Proxmox config
This is the next high-value step because the old VM config may name the missing VM disk precisely.
“`bash
mkdir -p /mnt/toshiba-root
blkid /dev/pve_toshiba/root
file -sL /dev/pve_toshiba/root
“`
If it is ext4:
“`bash
mount -t ext4 -o ro,noload /dev/pve_toshiba/root /mnt/toshiba-root
“`
If it is XFS:
“`bash
mount -t xfs -o ro,norecovery,nouuid /dev/pve_toshiba/root /mnt/toshiba-root
“`
Then:
“`bash
ls -la /mnt/toshiba-root
ls -la /mnt/toshiba-root/var/lib/pve-cluster/
“`
Copy the old Proxmox config database:
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-recovery-config
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db \
/mnt/pve/KeepE/toshiba-recovery-config/ 2>/dev/null || true
cp -a /mnt/toshiba-root/etc \
/mnt/pve/KeepE/toshiba-recovery-config/etc 2>/dev/null || true
“`
Then extract VM config text:
“`bash
apt install -y sqlite3
sqlite3 /mnt/pve/KeepE/toshiba-recovery-config/config.db \
“select name, data from tree where name like ‘%.conf’;” \
> /mnt/pve/KeepE/toshiba-recovery-config/vm-configs.txt
cat /mnt/pve/KeepE/toshiba-recovery-config/vm-configs.txt
“`
That file may directly tell us whether the missing disk was `vm-100-disk-*`, `vm-101-disk-*`, or something else.
## Inspect the thin-pool metadata
Install tools if needed:
“`bash
apt install -y thin-provisioning-tools
“`
Then find the metadata LV name:
“`bash
ls -l /dev/mapper/ | grep pve_toshiba
“`
Likely candidates:
“`text
pve_toshiba-data_tmeta
pve_toshiba-data_tdata
“`
Run:
“`bash
thin_check /dev/mapper/pve_toshiba-data_tmeta
thin_dump /dev/mapper/pve_toshiba-data_tmeta \
> /mnt/pve/KeepE/toshiba-recovery-config/thin-metadata.xml
grep -E ‘
“`
If those exist, the thin pool still knows about thin devices even if LVM is not exposing them as normal `vm-*` volumes.
## Very important
Do **not** run:
“`bash
fsck -y
xfs_repair
thin_repair
lvconvert –repair
vgcfgrestore
mount -o rw
“`
Not yet. At this stage we want read-only structure discovery.
The next two outputs that matter most are:
“`bash
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba
“`
and:
“`bash
cat /mnt/pve/KeepE/toshiba-recovery-config/vm-configs.txt
“`
## Prompt:
02/06/2026, 05:47:46
root@hv03 26-06-05:45:49: losetup -a | egrep ‘loop0|loop1|toshiba|TOSHIBA|KeepE’
lsblk -o NAME,RO,SIZE,TYPE,FSTYPE,MOUNTPOINTS /dev/loop0 /dev/loop1 2>/dev/null
/dev/loop1: [0050]:1970324836974727 (/mnt/pve/KeepE/images/toshiba-MQ01ABD050-Y2E6SOQLS-1.img)
/dev/loop0: [0050]:1970324836974727 (/mnt/pve/KeepE/images/toshiba-MQ01ABD050-Y2E6SOQLS-1.img)
NAME RO SIZE TYPE FSTYPE MOUNTPOINTS
loop0 1 465.8G loop
├─loop0p1 1 1007K part
├─loop0p2 1 1G part vfat
└─loop0p3 1 464.8G part LVM2_member
loop1 1 465.8G loop
├─loop1p1 1 1007K part
├─loop1p2 1 1G part vfat
└─loop1p3 1 464.8G part LVM2_member
root@hv03 26-06-05:45:51: losetup -d /dev/loop1
root@hv03 26-06-05:46:05: lsblk -o NAME,RO,SIZE,TYPE,FSTYPE,MOUNTPOINTS /dev/loop0 /dev/loop1 2>/dev/null
NAME RO SIZE TYPE FSTYPE MOUNTPOINTS
loop0 1 465.8G loop
├─loop0p1 1 1007K part
├─loop0p2 1 1G part vfat
└─loop0p3 1 464.8G part LVM2_member
root@hv03 26-06-05:46:08: lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba
VG LV Path LSize Attr Type Pool Origin Data% Meta% Health Devices
pve_toshiba data 337.86g twi-a-tz– thin-pool 0.00 0.50 data_tdata(0)
pve_toshiba [data_tdata] 337.86g Twi-ao—- linear /dev/loop0p3(26624)
pve_toshiba [data_tmeta] <3.45g ewi-ao---- linear /dev/loop0p3(113117)
pve_toshiba [lvol0_pmspare] <3.45g ewi------- linear /dev/loop0p3(113999)
pve_toshiba root /dev/pve_toshiba/root 96.00g -wi-a----- linear /dev/loop0p3(2048)
pve_toshiba swap /dev/pve_toshiba/swap 8.00g -wi-a----- linear /dev/loop0p3(0)
root@hv03 26-06-05:46:25: mkdir -p /mnt/toshiba-root
blkid /dev/pve_toshiba/root
file -sL /dev/pve_toshiba/root
/dev/pve_toshiba/root: ERROR: cannot read `/dev/pve_toshiba/root' (Input/output error)
root@hv03 26-06-05:47:04: pwd
/mnt/pve/KeepE/images
root@hv03 26-06-05:47:28:
## Response:
02/06/2026, 05:47:50
> **Explaining technical issue with ddrescue image error**
>
> It looks like the user is asking about a technical error related to a ddrescue image. Based on the provided info, the issue could be due to holes in the root LV (logical volume) or a loop read error. I can provide an answer using this context and avoid relying on web sources unless necessary.
>
> **Investigating ddrescue image with sparse data**
>
> It looks like the Proxmox local-lvm thin pool is showing 0% usage, with no VM volumes, possibly because the pve_toshiba data is empty. The error from the root could indicate an I/O issue, or the ddrescue image may have sparse data. If the map file isn’t complete, holes might return zeros. I’ll investigate this more closely.
>
> Thought for 22s
This is the decisive topology result: the Toshiba image’s `data` thin pool is visible but empty at the LVM level, and there are no `vm-*` or `subvol-*` child volumes. The immediate anomaly is now the old `root` LV throwing I/O on first read, which means we need to inspect the image/map integrity before trying mounts.
Good, this narrows the situation sharply.
## What this means
You now have only one loop device attached, cleanly read-only:
“`text
/dev/loop0 -> /mnt/pve/KeepE/images/toshiba-MQ01ABD050-Y2E6SOQLS-1.img
loop0p3 -> LVM2_member
“`
The Toshiba VG is readable enough for LVM metadata:
“`text
pve_toshiba root 96G
pve_toshiba swap 8G
pve_toshiba data 337.86G thin-pool
“`
But the thin pool shows:
“`text
data 337.86g thin-pool Data% 0.00 Meta% 0.50
“`
and **no `vm-*` or `subvol-*` child volumes**. So, at least through normal LVM metadata, the Toshiba’s `data` thin pool is empty. The missing data is therefore probably one of these:
1. on the old `root` filesystem, but that LV is currently giving I/O errors;
2. in damaged/unexposed thin metadata;
3. not in this Proxmox thin pool at all, despite the disk layout suggesting it should be.
The immediate problem is this:
“`text
/dev/pve_toshiba/root: ERROR: cannot read … Input/output error
“`
That is not a normal filesystem error yet. That means the block layer could not read from the LV/image at all at the place `file` tried to inspect.
## Next: verify the ddrescue image and map
From:
“`bash
cd /mnt/pve/KeepE/images
“`
run:
“`bash
ls -lh toshiba-MQ01ABD050-Y2E6SOQLS-1.img*
stat –printf ‘%n %s bytes\n’ toshiba-MQ01ABD050-Y2E6SOQLS-1.img
du -h toshiba-MQ01ABD050-Y2E6SOQLS-1.img
dmesg -T | tail -80
“`
The expected full disk image size is:
“`text
500107862016 bytes
“`
If the file is smaller than that, the image is incomplete/truncated. If `dmesg` shows loop read errors, the image file or the storage holding it may itself be problematic.
Also look for the ddrescue mapfile:
“`bash
ls -lh *.map *.log 2>/dev/null
“`
If you have the mapfile, show status:
“`bash
ddrescuelog -t toshiba-MQ01ABD050-Y2E6SOQLS-1.map
“`
or, depending on installed version:
“`bash
ddrescue -t toshiba-MQ01ABD050-Y2E6SOQLS-1.map
“`
If neither works, just paste:
“`bash
head -40 toshiba-MQ01ABD050-Y2E6SOQLS-1.map
tail -40 toshiba-MQ01ABD050-Y2E6SOQLS-1.map
“`
## Then test whether the root LV is globally unreadable or only partly damaged
Do **not** mount yet. First try a controlled read:
“`bash
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M count=16 status=progress
“`
If that fails immediately, try reading from later offsets:
“`bash
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M skip=1024 count=16 status=progress
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M skip=8192 count=16 status=progress
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M skip=32768 count=16 status=progress
“`
This tells us whether the whole root LV is inaccessible or just the beginning/superblock region is bad.
## Try rescuing the root LV out of the image
Even if direct reads fail, use ddrescue on the LV itself:
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-root-recovery
ddrescue -n /dev/pve_toshiba/root \
/mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.img \
/mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.map
“`
Then a limited retry pass:
“`bash
ddrescue -r3 /dev/pve_toshiba/root \
/mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.img \
/mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.map
“`
Now inspect the extracted LV image:
“`bash
file -s /mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.img
blkid /mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.img
“`
If it is ext4, try read-only/no-journal-replay mount:
“`bash
mkdir -p /mnt/toshiba-root-img
mount -t ext4 -o ro,noload,loop \
/mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.img \
/mnt/toshiba-root-img
“`
If it is XFS:
“`bash
mount -t xfs -o ro,norecovery,nouuid,loop \
/mnt/pve/KeepE/toshiba-root-recovery/pve_toshiba-root.img \
/mnt/toshiba-root-img
“`
## If root mounts, immediately extract Proxmox config
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-recovery-config
cp -a /mnt/toshiba-root-img/var/lib/pve-cluster/config.db \
/mnt/pve/KeepE/toshiba-recovery-config/ 2>/dev/null || true
cp -a /mnt/toshiba-root-img/etc \
/mnt/pve/KeepE/toshiba-recovery-config/etc 2>/dev/null || true
“`
Then:
“`bash
apt install -y sqlite3
sqlite3 /mnt/pve/KeepE/toshiba-recovery-config/config.db \
“select name, data from tree where name like ‘%.conf’;” \
> /mnt/pve/KeepE/toshiba-recovery-config/vm-configs.txt
cat /mnt/pve/KeepE/toshiba-recovery-config/vm-configs.txt
“`
That is still the highest-value artifact. It may tell us exactly where the customer data disk was originally attached.
## Also dump the thin metadata anyway
Even though LVM says `Data% 0.00`, let’s verify the thin metadata directly:
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-thin-inspect
thin_check /dev/mapper/pve_toshiba-data_tmeta
thin_dump /dev/mapper/pve_toshiba-data_tmeta \
> /mnt/pve/KeepE/toshiba-thin-inspect/thin-metadata.xml
grep -E ‘
## My read right now
The Toshiba image’s LVM metadata is intact enough to show the VG, but:
“`text
pve_toshiba/data has no exposed VM disks
pve_toshiba/root gives I/O error
“`
So the next battle is not mounting `data`; it is recovering enough of `root` to get:
“`text
/var/lib/pve-cluster/config.db
/etc/pve historical config via pmxcfs database
“`
The most useful next paste is:
“`bash
stat –printf ‘%n %s bytes\n’ toshiba-MQ01ABD050-Y2E6SOQLS-1.img
ls -lh *.map *.log 2>/dev/null
dmesg -T | tail -80
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M count=16 status=progress
“`
## Prompt:
02/06/2026, 05:50:54
Shall we try the second image we created?
###
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 05:50:55
> **Proposing solution for second image troubleshooting**
>
> I need to address the user’s question about trying the second image. First, I’ll propose detaching the current loop volume safely, attaching the second image as read-only. I’ll find the second image’s filename, likely `…-2.img`, and suggest commands to list it. I’ll avoid asking for details and provide the full recipe.
>
> **Analyzing I/O error on dm-11**
>
> It seems like the I/O error on `dm-11` might be related to a bad sector or an unallocated hole in the sparse image file. Normally, sparse files should read as zeros in such cases, not produce I/O errors. Given the user’s setup, including underlying CIFS/NFS storage, errors could come from the storage system itself, not just the image.
>
> Thought for 27s
Yes — trying the second image is sensible now, but do it in a way that does not leave stale LVM/device-mapper state from the first image. The first image is full-sized, but the root LV still throws block-level I/O at logical block 0, so it may have a damaged critical area or a bad loop/backing-file path.
Yes. I would try the second image now.
The first image is the correct full disk size – `500107862016 bytes` – but the kernel still reported `Buffer I/O error on dev dm-11, logical block 0` when reading the Toshiba root LV, after many unrecovered read errors from the physical Toshiba. `Pasted text.txt` So the second image may contain a better copy of the critical root-LV beginning.
The important rule: **do not have both images active at once**, because they contain the same LVM PV UUID and will confuse LVM.
## 1. Deactivate the first image cleanly
“`bash
findmnt | grep -i toshiba || true
umount /mnt/toshiba-root 2>/dev/null || true
umount /mnt/toshiba-root-img 2>/dev/null || true
vgchange -an pve_toshiba
losetup -a | grep -i toshiba
losetup -d /dev/loop0 2>/dev/null || true
losetup -d /dev/loop1 2>/dev/null || true
losetup -a | grep -i toshiba || true
“`
Confirm the Toshiba VG is no longer active:
“`bash
lvs pve_toshiba 2>/dev/null || true
dmsetup ls –tree | grep -i pve_toshiba || true
“`
## 2. Find the second image
“`bash
cd /mnt/pve/KeepE/images
ls -lh *toshiba* *.img 2>/dev/null
“`
Suppose the second one is something like:
“`text
toshiba-MQ01ABD050-Y2E6SOQLS-2.img
“`
Then:
“`bash
IMG=/mnt/pve/KeepE/images/toshiba-MQ01ABD050-Y2E6SOQLS-2.img
stat –printf ‘%n %s bytes\n’ “$IMG”
“`
Ideally it should also report:
“`text
500107862016 bytes
“`
## 3. Attach the second image read-only
“`bash
LOOP=$(losetup –find –partscan –read-only –show “$IMG”)
echo “$LOOP”
lsblk -o NAME,RO,SIZE,TYPE,FSTYPE,MOUNTPOINTS “$LOOP”
“`
Expected:
“`text
loopXp1 1007K
loopXp2 1G vfat
loopXp3 464.8G LVM2_member
“`
Then scan and activate:
“`bash
pvscan –cache “${LOOP}p3”
vgchange –readonly -ay pve_toshiba
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,lv_health_status,devices pve_toshiba
“`
## 4. Test the root LV before mounting
“`bash
blkid /dev/pve_toshiba/root
file -sL /dev/pve_toshiba/root
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M count=16 status=progress
dmesg -T | tail -40
“`
If that `dd` succeeds, try mounting read-only.
For ext4:
“`bash
mkdir -p /mnt/toshiba-root
mount -t ext4 -o ro,noload /dev/pve_toshiba/root /mnt/toshiba-root
“`
For XFS:
“`bash
mkdir -p /mnt/toshiba-root
mount -t xfs -o ro,norecovery,nouuid /dev/pve_toshiba/root /mnt/toshiba-root
“`
Then immediately check for the Proxmox config:
“`bash
ls -la /mnt/toshiba-root
ls -la /mnt/toshiba-root/var/lib/pve-cluster/
“`
If `config.db` exists:
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-recovery-config-second
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db \
/mnt/pve/KeepE/toshiba-recovery-config-second/
cp -a /mnt/toshiba-root/etc \
/mnt/pve/KeepE/toshiba-recovery-config-second/etc
“`
Then extract VM configs:
“`bash
apt install -y sqlite3
sqlite3 /mnt/pve/KeepE/toshiba-recovery-config-second/config.db \
“select name, data from tree where name like ‘%.conf’;” \
> /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
cat /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
“`
## 5. If the second image also gives I/O error at root block 0
Then both images likely missed the same critical area, or the LV/device-mapper mapping is hitting a damaged/hole region. In that case, do not give up – next I’d test whether only the beginning of `root` is bad:
“`bash
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M skip=1 count=16 status=progress
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M skip=1024 count=16 status=progress
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M skip=8192 count=16 status=progress
“`
But first, yes: **try the second image, one image active at a time, read-only, then test `/dev/pve_toshiba/root` before mounting.**
## Prompt:
02/06/2026, 05:55:33
What are our chances?
###
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 05:55:34
> **Evaluating chances of success based on LVM data**
>
> To offer an accurate answer, I’ll explain the current issues: the second image is full-size, showing maps. It seems the activation failed due to physical device duplication and readonly locks. Based on LVM data, the chances for root configuration might be better than for VM data. However, I’d say there’s not enough data to provide a solid conclusion.
>
> **Assessing chances for LVM recovery**
>
> The second image shows a physical duplicate and inactive logical volumes. Recovery chances for the root configuration are moderate, as long as activation occurs correctly. However, if LVM-thin metadata really shows 0%, the chances are low. The next step is to detach the physical Toshiba or restrict LVM to loop0 for activation. There’s still a possibility, though activation has failed.
>
> Thought for 23s
The second-image test is not actually a negative result yet: `/dev/pve_toshiba/root` did not exist because the VG was not activated, not because that LV was proven unreadable. The more important problem is that LVM is still seeing the original `/dev/sdc3` with the same PV UUID and refusing/complicating activation.
Our chances are **not hopeless**, but the odds have split into two very different cases.
## Honest estimate
For recovering **the old Proxmox root/config**, including `/var/lib/pve-cluster/config.db`: **moderate** – maybe **50-70%**.
The second image has not really been tested yet. The failure shown here is mostly because the VG did **not activate**: `/dev/pve_toshiba/root` was missing, not unreadable. The log shows LVM is still seeing the original `/dev/sdc3` as a duplicate PV, and activation was blocked/complicated by that duplicate state. `Pasted text.txt`
For recovering **a clean VM disk from the Toshiba LVM-thin pool**: currently **low** – maybe **10-25%**, unless `thin_dump` reveals hidden device entries. The ominous sign is that the thin pool previously showed `Data% 0.00` and no `vm-*` child volumes.
For recovering **some raw customer files/fragments** from the image with carving tools if LVM/FS metadata fails: **moderate**, maybe **40-70%**, but with worse names/folders and no guarantee of database/application consistency.
So: **good chance of learning what was there; uncertain-to-low chance of cleanly restoring the missing VM/data disk; still meaningful chance of partial data recovery.**
## The next decisive step
Before testing image 2, remove the duplicate PV problem. The original Toshiba `/dev/sdc3` appears to still be visible to LVM:
“`text
PV /dev/loop0p3 … is duplicate … on /dev/sdc3
“`
That means LVM sees both the physical failing disk and the image. Do one of these:
### Best: physically disconnect or delete the original Toshiba device
Only if `/dev/sdc` is definitely the Toshiba and not your storage target:
“`bash
lsblk -o NAME,SIZE,MODEL,SERIAL,WWN /dev/sdc
echo 1 > /sys/block/sdc/device/delete
“`
Then confirm:
“`bash
lsblk | grep sdc || true
“`
### Then reattach image 2 cleanly
“`bash
vgchange -an pve_toshiba 2>/dev/null || true
losetup -d /dev/loop0 2>/dev/null || true
losetup -d /dev/loop1 2>/dev/null || true
IMG=/mnt/pve/KeepE/images/toshiba-MQ01ABD050-Y2E6SOQLS-2.img
LOOP=$(losetup –find –partscan –read-only –show “$IMG”)
echo “$LOOP”
pvscan –cache “${LOOP}p3”
vgchange -ay pve_toshiba
“`
I would **not** use `vgchange –readonly` here, because your output showed:
“`text
Operation prohibited while –readonly is set.
Can’t get lock for pve_toshiba.
“`
The loop device itself is already read-only, so this is acceptable for discovery.
Then test:
“`bash
ls -l /dev/pve_toshiba/
blkid /dev/pve_toshiba/root
file -sL /dev/pve_toshiba/root
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M count=16 status=progress
“`
If that succeeds, mount read-only:
“`bash
mkdir -p /mnt/toshiba-root
mount -t ext4 -o ro,noload /dev/pve_toshiba/root /mnt/toshiba-root
“`
or, if XFS:
“`bash
mount -t xfs -o ro,norecovery,nouuid /dev/pve_toshiba/root /mnt/toshiba-root
“`
Then immediately go for:
“`bash
ls -la /mnt/toshiba-root/var/lib/pve-cluster/
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db /mnt/pve/KeepE/
“`
## My read
We are not dead. The second image has not failed yet; it was blocked by duplicate-PV/activation state. The real make-or-break signal will be whether, after removing `/dev/sdc3` from the equation, `/dev/pve_toshiba/root` becomes readable.
If `root` mounts, our chances improve immediately. If `root` and `data_tmeta` both throw I/O errors from both images, then we shift from structured recovery to fragment/file carving.
## Prompt:
02/06/2026, 05:59:09
Here is that output:root@hv03 26-06-05:57:08: lsblk -o NAME,SIZE,MODEL,SERIAL,WWN /dev/sdc
echo 1 > /sys/block/sdc/device/delete
lsblk: /dev/sdc: not a block device
-bash: /sys/block/sdc/device/delete: No such file or directory
root@hv03 26-06-05:57:12: lsblk | grep sdc || true
root@hv03 26-06-05:57:26: vgchange -an pve_toshiba 2>/dev/null || true
losetup -d /dev/loop0 2>/dev/null || true
losetup -d /dev/loop1 2>/dev/null || true
IMG=/mnt/pve/KeepE/images/toshiba-MQ01ABD050-Y2E6SOQLS-2.img
LOOP=$(losetup –find –partscan –read-only –show “$IMG”)
echo “$LOOP”
pvscan –cache “${LOOP}p3”
vgchange -ay pve_toshiba
0 logical volume(s) in volume group “pve_toshiba” now active
/dev/loop0
pvscan[500013] PV /dev/loop0p3 259:8 is duplicate for PVID lquTbpLpiwHnb34lwYC0ZZSVj5fKYbAP on 8:35 /dev/sdc3.
pvscan[500013] PV /dev/loop0p3 failed to create online file.
3 logical volume(s) in volume group “pve_toshiba” now active
root@hv03 26-06-05:57:37: ls -l /dev/pve_toshiba/
blkid /dev/pve_toshiba/root
file -sL /dev/pve_toshiba/root
dd if=/dev/pve_toshiba/root of=/dev/null bs=1M count=16 status=progress
total 0
lrwxrwxrwx 1 root root 8 Jun 2 05:57 data -> ../dm-14
lrwxrwxrwx 1 root root 8 Jun 2 05:57 root -> ../dm-11
lrwxrwxrwx 1 root root 8 Jun 2 05:57 swap -> ../dm-10
/dev/pve_toshiba/root: UUID=”47879706-f097-42b2-bdc1-c70556223fae” BLOCK_SIZE=”4096″ TYPE=”ext4″
/dev/pve_toshiba/root: Linux rev 1.0 ext4 filesystem data, UUID=47879706-f097-42b2-bdc1-c70556223fae (extents) (64bit) (large files) (huge files)
16+0 records in
16+0 records out
16777216 bytes (17 MB, 16 MiB) copied, 0.0659782 s, 254 MB/s
root@hv03 26-06-05:58:09: ls -la /mnt/toshiba-root/var/lib/pve-cluster/
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db /mnt/pve/KeepE/
ls: cannot access ‘/mnt/toshiba-root/var/lib/pve-cluster/’: No such file or directory
cp: cannot stat ‘/mnt/toshiba-root/var/lib/pve-cluster/config.db’: No such file or directory
root@hv03 26-06-05:58:26:
## Response:
02/06/2026, 05:59:11
> **Providing troubleshooting steps for mount issue and duplicate warning**
>
> I think I can offer clear advice here: actively mount the root, then copy the config.db. It seems like there’s a stale LVM device or cache affecting things. A good next step sounds like running a pvscan to check for duplicate/obsolete devices. Clearing the cache might fix the stale issue, possibly allowing things to proceed.
>
> Thought for 22s
That is a big improvement: image 2’s `root` LV is readable and identified cleanly as ext4, and the 16 MiB test read succeeded. The only reason `/var/lib/pve-cluster` was missing is that we never mounted `/dev/pve_toshiba/root` before listing it.
Good news: **image 2 looks much better than image 1 for the root LV.**
You successfully got:
“`text
/dev/pve_toshiba/root: TYPE=”ext4″
file: Linux rev 1.0 ext4 filesystem data
dd 16 MiB read: succeeded at 254 MB/s
“`
So our chances for recovering the **old Proxmox configuration** just improved a lot. The previous `ls` failed only because `/mnt/toshiba-root` was not mounted yet.
## Do this next
Mount the Toshiba root LV read-only:
“`bash
mkdir -p /mnt/toshiba-root
mount -t ext4 -o ro,noload /dev/pve_toshiba/root /mnt/toshiba-root
findmnt /mnt/toshiba-root
ls -la /mnt/toshiba-root
ls -la /mnt/toshiba-root/var/lib/pve-cluster/
“`
If that works, immediately copy the config and `/etc`:
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-recovery-config-second
cp -a /mnt/toshiba-root/var/lib/pve-cluster/config.db \
/mnt/pve/KeepE/toshiba-recovery-config-second/
cp -a /mnt/toshiba-root/etc \
/mnt/pve/KeepE/toshiba-recovery-config-second/etc
“`
Then extract the old VM configs:
“`bash
apt install -y sqlite3
sqlite3 /mnt/pve/KeepE/toshiba-recovery-config-second/config.db \
“select ‘— ‘ || name || char(10) || cast(data as text) from tree where name like ‘%.conf’;” \
> /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
cat /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
“`
That output is now the next key artifact. It may tell us exactly where the missing disk was configured.
## Also copy the whole old root while it is mounted
Even if the missing data is not there, preserve it now:
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-root-copy
rsync -aHAX –numeric-ids –info=progress2 –ignore-errors \
/mnt/toshiba-root/ \
/mnt/pve/KeepE/toshiba-root-copy/
“`
## About the lingering `/dev/sdc3` warning
This line is annoying but not fatal:
“`text
PV /dev/loop0p3 is duplicate … on /dev/sdc3
“`
Since `lsblk` says `/dev/sdc` no longer exists, this may be stale LVM cache/state. It did not prevent activation this time, and `/dev/pve_toshiba/root` is now readable.
For now, I would **not** fight that warning unless it blocks us again.
## Updated chances
For recovering old Proxmox config: **high now**, maybe **80–90%**, assuming the mount succeeds.
For finding the missing customer data as a clean VM disk: still **uncertain**, because the Toshiba thin pool currently shows no child `vm-*` volumes. But if the old config reveals that the data was on root, raw passthrough, another disk, or a differently named volume, we’ll know.
The next decisive command is:
“`bash
mount -t ext4 -o ro,noload /dev/pve_toshiba/root /mnt/toshiba-root
ls -la /mnt/toshiba-root/var/lib/pve-cluster/
“`
## Prompt:
02/06/2026, 06:18:13
Hold and poise… It is reading and writing now.
###
1,121,118,290 88% 10.32MB/s 0:01:43 (xfr#3360, ir-chk=1117/5911)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/firmware/rtl_bt/rtl8852cu_config.bin”: Operation not supported (95)
1,156,105,148 90% 10.26MB/s 0:01:47 (xfr#3494, ir-chk=1031/5977)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/firmware/rtlwifi/rtl8192eefw.bin”: Operation not supported (95)
1,190,749,108 91% 10.31MB/s 0:01:50 (xfr#3579, ir-chk=1311/6361)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/gnupg2/gpg-preset-passphrase”: Operation not supported (95)
1,190,972,052 91% 10.31MB/s 0:01:50 (xfr#3580, ir-chk=1307/6361)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/gnupg2/gpg-protect-tool”: Operation not supported (95)
rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/gold-ld/ld”: Operation not supported (95)
1,191,195,228 91% 10.31MB/s 0:01:50 (xfr#3581, ir-chk=1303/6361)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/grub/grub-mkconfig_lib”: Operation not supported (95)
1,260,991,666 93% 10.18MB/s 0:01:58 (xfr#3902, ir-chk=1243/6884)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/kvm/virtiofsd”: Operation not supported (95)
1,261,122,206 93% 10.16MB/s 0:01:58 (xfr#3903, ir-chk=1242/6884)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/man-db/libman.so”: Operation not supported (95)
1,261,432,694 93% 10.16MB/s 0:01:58 (xfr#3905, ir-chk=1240/6884)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/man-db/libmandb.so”: Operation not supported (95)
1,261,494,358 93% 10.16MB/s 0:01:58 (xfr#3910, ir-chk=1235/6884)rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/man-db/man”: Operation not supported (95)
rsync: [generator] failed to set times on “/mnt/pve/KeepE/toshiba-root-copy/usr/lib/man-db/mandb”: Operation not supported (95)
4,280,997,704 97% 4.36MB/s 0:15:36 (xfr#40224, ir-chk=1065/49586)
###
## Response:
02/06/2026, 06:18:14
Good. Let it complete. This is exactly the kind of “quiet success” we wanted.
Those messages:
“`text
rsync: failed to set times … Operation not supported (95)
“`
are **not data-read failures** from the Toshiba image. They usually mean the destination filesystem at:
“`bash
/mnt/pve/KeepE/toshiba-root-copy/
“`
does not support preserving some metadata, likely timestamps/attributes in the way `rsync -aHAX` requested. The file contents are still being copied.
Do **not** interrupt it.
When it finishes, immediately capture the result code:
“`bash
echo $?
“`
Interpretation:
“`text
0 clean success
23 partial transfer; common with metadata/xattr/time warnings
24 files vanished during transfer; usually not fatal here
“`
Given the warnings, `23` would not surprise me.
After it finishes, go straight for the high-value Proxmox config:
“`bash
ls -la /mnt/toshiba-root/var/lib/pve-cluster/
mkdir -p /mnt/pve/KeepE/toshiba-recovery-config-second
cp -av /mnt/toshiba-root/var/lib/pve-cluster/config.db \
/mnt/pve/KeepE/toshiba-recovery-config-second/
cp -av /mnt/toshiba-root/etc/pve \
/mnt/pve/KeepE/toshiba-recovery-config-second/etc-pve-mounted-view 2>/dev/null || true
“`
Then extract VM configs:
“`bash
apt install -y sqlite3
sqlite3 /mnt/pve/KeepE/toshiba-recovery-config-second/config.db \
“select ‘— ‘ || name || char(10) || cast(data as text) from tree where name like ‘%.conf’;” \
> /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
cat /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
“`
Also check whether the customer data might simply be under old host storage paths:
“`bash
du -h –max-depth=2 /mnt/toshiba-root/var/lib/vz 2>/dev/null
find /mnt/toshiba-root/var/lib/vz -maxdepth 4 -type f -printf ‘%s %p\n’ 2>/dev/null | sort -nr | head -50
“`
And after the rsync completes, verify the copy has substance:
“`bash
du -sh /mnt/pve/KeepE/toshiba-root-copy
find /mnt/pve/KeepE/toshiba-root-copy -maxdepth 3 -type f | head -100
“`
Right now: let the stream finish. The root filesystem is alive enough to copy tens of thousands of files, which is a very good turn.
## Prompt:
02/06/2026, 06:27:23
Noted. All I need is the data from that VM drive. I don’t even need all of it. I need one folder particularly where the SQL-Anywhere data is. It was a drive which was exposed as a share on the server. I may have to resort to earlier backups on the customer’s NAS (at their location), but having the structure as it was would be very helpful.
## Response:
02/06/2026, 06:27:25
> **Searching for VMware data and exposed share**
>
> I need to find the folder in the Toshiba root and use an old config.db for the share path. This could be SQL Anywhere data from a Windows VM, stored in a virtual disk or passthrough disk. I’ll check if the LVM thin pool is empty or if the raw disk image is housed under /var/lib/vz/images. Might also search for the Windows share on the root.
>
> Thought for 24s
That narrows the objective beautifully: we do not need a bootable VM, only the Windows volume/folder that held the SQL Anywhere database. The old Proxmox root copy can give us the map; the data itself is likely either inside a VM disk, an unattached/raw disk, or a passthrough device recorded in the old config.
Exactly. Then we should stop thinking “restore VM” and think **recover the one Windows data volume / SQL Anywhere folder**.
Right now the best route is:
1. **Use the Toshiba root copy to identify the old VM disk mapping.**
2. **Find the actual virtual disk or passthrough disk.**
3. **Mount that disk read-only.**
4. **Search only for SQL Anywhere data files / likely folder names.**
5. **Copy that folder out.**
The SQL Anywhere target files are likely things like:
“`text
*.db
*.log
*.mir
*.bak
*.sql
“`
The core pair is usually a database file plus transaction log, often:
“`text
something.db
something.log
“`
## After the current rsync finishes
First capture the old Proxmox config:
“`bash
mkdir -p /mnt/pve/KeepE/toshiba-recovery-config-second
cp -av /mnt/toshiba-root/var/lib/pve-cluster/config.db \
/mnt/pve/KeepE/toshiba-recovery-config-second/ 2>/dev/null || true
cp -av /mnt/toshiba-root/etc \
/mnt/pve/KeepE/toshiba-recovery-config-second/etc 2>/dev/null || true
“`
Then extract VM configs:
“`bash
apt install -y sqlite3
sqlite3 /mnt/pve/KeepE/toshiba-recovery-config-second/config.db \
“select ‘— ‘ || name || char(10) || cast(data as text) from tree where name like ‘%.conf’;” \
> /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
cat /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
“`
Then immediately grep only for disk-relevant lines:
“`bash
grep -Ei ‘^(sata|scsi|virtio|ide|unused|efidisk|tpmstate|name|description):’ \
/mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
“`
That should tell us whether the missing data volume was:
“`text
local-lvm:vm-XYZ-disk-N
local:XYZ/…
/dev/disk/by-id/…
“`
## Search the old root for obvious VM disk files
Because the Toshiba thin pool currently shows no child `vm-*` volumes, we must also check whether the VM disk was stored as a file under the old root/local storage:
“`bash
find /mnt/toshiba-root -xdev -type f \
\( -iname ‘*.raw’ -o -iname ‘*.qcow2’ -o -iname ‘*.vmdk’ -o -iname ‘*.vma’ -o -iname ‘*.vma.zst’ -o -iname ‘*.vma.gz’ \) \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -100
“`
Also check old Proxmox image directories:
“`bash
find /mnt/toshiba-root/var/lib/vz -maxdepth 5 -type f \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -100
“`
## Search the copied root for SQL Anywhere files
This probably only helps if the SQL folder was on the Proxmox host filesystem, but it is fast and worth doing:
“`bash
find /mnt/toshiba-root -xdev -type f \
\( -iname ‘*.db’ -o -iname ‘*.log’ -o -iname ‘*.mir’ -o -iname ‘*.bak’ -o -iname ‘*.sql’ \) \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -200
“`
Also search for likely folder names:
“`bash
find /mnt/toshiba-root -xdev -type d \
\( -iname ‘*sql*’ -o -iname ‘*anywhere*’ -o -iname ‘*sybase*’ -o -iname ‘*database*’ -o -iname ‘*daten*’ -o -iname ‘*db*’ \) \
-print 2>/dev/null | head -200
“`
## If we identify a VM disk image
For example, if we find:
“`text
/mnt/toshiba-root/var/lib/vz/images/100/vm-100-disk-1.raw
“`
then inspect partitions:
“`bash
fdisk -l /mnt/toshiba-root/var/lib/vz/images/100/vm-100-disk-1.raw
kpartx -ar /mnt/toshiba-root/var/lib/vz/images/100/vm-100-disk-1.raw
lsblk -f
“`
Then mount NTFS read-only:
“`bash
mkdir -p /mnt/vm-data
mount -t ntfs3 -o ro /dev/mapper/LOOPPARTITION /mnt/vm-data
“`
Then search inside it:
“`bash
find /mnt/vm-data -type f \
\( -iname ‘*.db’ -o -iname ‘*.log’ -o -iname ‘*.mir’ -o -iname ‘*.bak’ -o -iname ‘*.sql’ \) \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -200
“`
Copy the target folder with metadata as best as the destination supports:
“`bash
mkdir -p /mnt/pve/KeepE/sql-anywhere-recovered
rsync -a –info=progress2 –ignore-errors \
“/mnt/vm-data/PATH/TO/TARGET/FOLDER/” \
/mnt/pve/KeepE/sql-anywhere-recovered/
“`
## The most valuable thing to paste next
Once rsync finishes, paste this:
“`bash
cat /mnt/pve/KeepE/toshiba-recovery-config-second/vm-configs.txt
find /mnt/toshiba-root/var/lib/vz -maxdepth 5 -type f \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -100
“`
The old VM config is the map. The SQL Anywhere folder is the treasure. We only need enough structure to follow the map to that one volume.
## Prompt:
02/06/2026, 06:52:13
It completed! Amazing! Here is that data:
###
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 06:52:15
> **Fetching citation from file for latest response**
>
> I need to respond with information from the latest file the user uploaded. Since the citation lines aren’t provided in the snippet, I may need to click to get the full results with line numbers, so I can properly cite the relevant content accurately. I’ll check how to retrieve that.
>
> **Considering Proxmox command response options**
>
> I think I can answer without web browsing, since the Proxmox commands seem stable. However, the system requires web searches if there’s a potential significant change, and I could be caught off guard. I could check the official Proxmox source for peace of mind, though the commands are likely unchanged.
>
> **Browsing for official Proxmox qmrestore/vma extract docs**
>
> [qmrestore (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qmrestore.1.html)
> [qmrestore man | Linux Command Library](https://linuxcommandlibrary.com/man/qmrestore)
> [Proxmox Backup & Restore Guide: vzdump and qmrestore for VMs](https://std.rocks/proxmox-vzdump-backup-restore.html)
> [How to use the command ‘qmrestore’ (with examples)](https://commandmasters.com/commands/qmrestore-linux/)
> [Proxmox Command Line Reference: Essential CLI Tools](https://proxmoxr.com/blog/proxmox-command-line-reference)
> [Proxmox VE Documentation Index](https://proxmox.christiansen.app/pve-docs/index.html)
> [Extracting data from *.vma file | Proxmox Support Forum](https://forum.proxmox.com/threads/extracting-data-from-vma-file.70914/)
>
> **Figuring out citation with file lines**
>
> I need to provide a file citation, but the lines aren’t showing up after I clicked. The file citation might just reference the turn file, which could be acceptable, but the instructions prefer line ranges. I could try searching for relevant terms to get the proper line references. I’ll see if that works.
>
> **Handling citation when line numbers are missing**
>
> Citing line ranges seems impossible right now. I could use snippets with a file citation even without line numbers, though that might not be ideal. Maybe if I click again, I can get the line numbers. However, long output might still prevent those numbers from showing up. Let’s try.
>
> Thought for 26s
Beautiful. We now have the map.
The key line is old `100.conf`:
“`text
sata0: local-lvm-nvme0n1:vm-100-disk-2,discard=on,size=2T,ssd=1
sata1: local-lvm-nvme0n1:vm-100-disk-3,backup=0,discard=on,size=2T,ssd=1
sata2: /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
“`
So the SQL Anywhere share was very likely on **VM 100’s old `sata1` data disk**:
“`text
local-lvm-nvme0n1:vm-100-disk-3
“`
The ST500 was only `sata2`, and you already confirmed it is not the needed data. The old config also shows VM 101 existed with two 1T disks, but the Windows Server 2022 VM 100 had the 2T `sata1` marked `backup=0`, which smells exactly like a data/share disk excluded from backup. `Pasted text.txt`
The rsync result is fine for our purpose: it copied ~27.9 GB and ended with code 23 because ACLs were not supported on the destination, not because the config extraction failed. `Pasted text.txt`
## The next target
On the repaired Proxmox server, we need to find whether `vm-100-disk-3` exists under any name, or whether it was renamed/reused.
Run this on the repaired server:
“`bash
pvesm list local-lvm-nvme0n1
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,devices local-lvm-nvme0n1
ls -l /dev/local-lvm-nvme0n1/
“`
From the earlier repaired-server output, I remember you had:
“`text
vm-100-disk-0 4M
vm-100-disk-1 2T
vm-100-disk-2 4M
vm-101-disk-0 1T
vm-101-disk-1 1T
“`
But old config says the real VM 100 layout was:
“`text
vm-100-disk-0 EFI 4M
vm-100-disk-1 TPM 4M
vm-100-disk-2 boot/system 2T
vm-100-disk-3 data/share 2T
“`
So either:
1. `vm-100-disk-3` is gone from the repaired NVMe thin pool;
2. it was renamed/recreated as `vm-100-disk-1`;
3. it was not restored because `backup=0`;
4. it exists on backup/NAS but not on the repaired host.
## Check the current VM 100 disks from the host, read-only
Since the SQL share is Windows data, do not start poking from inside Windows yet. Inspect the block devices from Proxmox.
First identify partitions:
“`bash
fdisk -l /dev/local-lvm-nvme0n1/vm-100-disk-1
blkid /dev/local-lvm-nvme0n1/vm-100-disk-1
“`
If there are no partitions shown by `blkid`, map them:
“`bash
kpartx -av /dev/local-lvm-nvme0n1/vm-100-disk-1
lsblk -f
“`
Then search any NTFS partitions read-only. Example, adjust mapper name from `lsblk`:
“`bash
mkdir -p /mnt/vm100disk1-p1
mount -t ntfs3 -o ro /dev/mapper/local–lvm–nvme0n1-vm–100–disk–1p1 /mnt/vm100disk1-p1
“`
Then search for SQL Anywhere data:
“`bash
find /mnt/vm100disk1-p1 -type f \
\( -iname ‘*.db’ -o -iname ‘*.log’ -o -iname ‘*.mir’ -o -iname ‘*.bak’ -o -iname ‘*.sql’ \) \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -200
“`
Also search likely share/database folder names:
“`bash
find /mnt/vm100disk1-p1 -type d \
\( -iname ‘*sql*’ -o -iname ‘*anywhere*’ -o -iname ‘*sybase*’ -o -iname ‘*database*’ -o -iname ‘*daten*’ -o -iname ‘*db*’ -o -iname ‘*share*’ \) \
-print 2>/dev/null | head -200
“`
Unmount when done:
“`bash
umount /mnt/vm100disk1-p1
kpartx -d /dev/local-lvm-nvme0n1/vm-100-disk-1
“`
## Also inspect the two orphan VM 101 disks
Because old config shows VM 101 was Windows Server 2012 with two 1T disks, and your repaired host still has those orphaned `vm-101-disk-0` and `vm-101-disk-1`, they are worth searching if `vm-100-disk-1` does not contain the SQL folder.
The most likely one is `vm-101-disk-1`, because earlier it showed real data usage, while `vm-101-disk-0` was almost empty. `Pasted text.txt`
“`bash
for d in /dev/local-lvm-nvme0n1/vm-101-disk-0 /dev/local-lvm-nvme0n1/vm-101-disk-1; do
echo “===== $d =====”
fdisk -l “$d”
blkid “$d”
done
“`
Then map and mount the promising one read-only:
“`bash
kpartx -av /dev/local-lvm-nvme0n1/vm-101-disk-1
lsblk -f
“`
Mount its NTFS partition and run the same `find` searches for `*.db`, `*.log`, `*sql*`, `*anywhere*`, `*sybase*`.
## Do not restore that 2023 backup yet
There is a `vzdump-qemu-100-2023_10_28-02_54_53.vma.lzo`, but it is only about 10 GB and from 2023. It may be useful for structure, but not likely current SQL data. The 2026 backup log is present, but not the corresponding backup archive in the visible `/var/lib/vz/dump` listing. `Pasted text.txt`
## My current best hypothesis
The folder you need was on:
“`text
VM 100 -> sata1 -> local-lvm-nvme0n1:vm-100-disk-3 -> Windows data/share volume
“`
But the repaired host currently may not have `vm-100-disk-3`. If it is absent, the next best candidates are:
“`text
/dev/local-lvm-nvme0n1/vm-100-disk-1
/dev/local-lvm-nvme0n1/vm-101-disk-1
“`
The next decisive output is:
“`bash
pvesm list local-lvm-nvme0n1
lvs -a -o lv_name,lv_path,lv_size,lv_attr,data_percent,metadata_percent local-lvm-nvme0n1
fdisk -l /dev/local-lvm-nvme0n1/vm-100-disk-1
fdisk -l /dev/local-lvm-nvme0n1/vm-101-disk-1
“`
## Prompt:
02/06/2026, 07:01:15
root@pve:~# pvesm list local-lvm-nvme0n1
lvs -a -o vg_name,lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,origin,data_percent,metadata_percent,devices local-lvm-nvme0n1
ls -l /dev/local-lvm-nvme0n1/
Volid Format Type Size VMID
local-lvm-nvme0n1:vm-100-disk-0 raw images 4194304 100
local-lvm-nvme0n1:vm-100-disk-1 raw images 2199023255552 100
local-lvm-nvme0n1:vm-100-disk-2 raw images 4194304 100
local-lvm-nvme0n1:vm-101-disk-0 raw images 1099511627776 101
local-lvm-nvme0n1:vm-101-disk-1 raw images 1099511627776 101
VG LV Path LSize Attr Type Pool Origin Data% Meta% Devices
local-lvm-nvme0n1 local-lvm-nvme0n1 <1.79t twi-aotz-- thin-pool 12.57 0.54 local-lvm-nvme0n1_tdata(0)
local-lvm-nvme0n1 [local-lvm-nvme0n1_tdata] <1.79t Twi-ao---- linear /dev/nvme0n1(4065)
local-lvm-nvme0n1 [local-lvm-nvme0n1_tmeta] <15.88g ewi-ao---- linear /dev/nvme0n1(472773)
local-lvm-nvme0n1 [lvol0_pmspare] <15.88g ewi------- linear /dev/nvme0n1(0)
local-lvm-nvme0n1 vm-100-disk-0 /dev/local-lvm-nvme0n1/vm-100-disk-0 4.00m Vwi-aotz-- thin local-lvm-nvme0n1 14.06
local-lvm-nvme0n1 vm-100-disk-1 /dev/local-lvm-nvme0n1/vm-100-disk-1 2.00t Vwi-aotz-- thin local-lvm-nvme0n1 1.68
local-lvm-nvme0n1 vm-100-disk-2 /dev/local-lvm-nvme0n1/vm-100-disk-2 4.00m Vwi-aotz-- thin local-lvm-nvme0n1 1.56
local-lvm-nvme0n1 vm-101-disk-0 /dev/local-lvm-nvme0n1/vm-101-disk-0 1.00t Vwi-a-tz-- thin local-lvm-nvme0n1 0.03
local-lvm-nvme0n1 vm-101-disk-1 /dev/local-lvm-nvme0n1/vm-101-disk-1 1.00t Vwi-a-tz-- thin local-lvm-nvme0n1 19.10
total 0
lrwxrwxrwx 1 root root 8 Jun 1 07:57 vm-100-disk-0 -> ../dm-11
lrwxrwxrwx 1 root root 8 Jun 1 07:57 vm-100-disk-1 -> ../dm-12
lrwxrwxrwx 1 root root 8 Jun 1 08:06 vm-100-disk-2 -> ../dm-13
lrwxrwxrwx 1 root root 7 May 31 12:20 vm-101-disk-0 -> ../dm-9
lrwxrwxrwx 1 root root 8 May 31 12:20 vm-101-disk-1 -> ../dm-10
root@pve:~#
###
They are no longer there, but I do have them on one of the two NAS. The customer is informed and shall make sure both drives (he alternates them weekly and takes one home with him). I can recover then recover them. The reason why they are not on the repaired server I can give you in the next turn if it matters. There is a reason. See this data first:
###
###
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 07:01:18
> **Guiding recovery with disk configurations**
>
> The user mentioned missing disks, specifically vm-100-disk-3, but it’s showing that vm-100-disk-1 is the current boot disk, which is used for basic recovery. I need to guide them on proper recovery steps using tools like `partx` or `losetup` for possible LVM volumes, but the disk setup should be rechecked with the provided data.
>
> **Considering citation format for file content**
>
> I need to include citations from the uploaded file, but the file search result doesn’t show line numbers, which is tricky when citing exact lines. The usual output doesn’t include lines, so I might need to use an extra step to retrieve them. I’ll make sure the citations are correctly formatted.
>
> **Finalizing citation with line numbers**
>
> I have a strong answer, but I need to add precise citations. To do that, I might need to click on specific lines, like 11:4 or 11:3, to ensure I get the exact line numbers. This will help me give a more accurate and properly cited response.
>
> **Clarifying citation and restoring from NAS**
>
> I need to cite sources, but the file search results aren’t showing line numbers, and the usual citation format expects them. I might be able to use only citation markers without line ranges. Regarding the restore process, since “backup=0” excludes the disk from backup, I’ll guide the user to manually restore it from the NAS, potentially using a raw LVM-thin volume.
>
> Thought for 31s
The new evidence fits the map: current `vm-100-disk-1` is a Windows GPT system disk, not the old `sata1` data disk. The old data disk was `vm-100-disk-3`, and it is absent from the repaired NVMe pool, so the NAS backups are now the right recovery target.
Yes – that data is decisive enough.
The missing SQL Anywhere share disk is **not present on the repaired NVMe pool**. The old Toshiba config says VM 100 had:
“`text
sata0: local-lvm-nvme0n1:vm-100-disk-2,size=2T
sata1: local-lvm-nvme0n1:vm-100-disk-3,backup=0,size=2T
sata2: /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01
tpmstate0: local-lvm-nvme0n1:vm-100-disk-1,size=4M
“`
So the data/share disk we want is almost certainly:
“`text
local-lvm-nvme0n1:vm-100-disk-3
“`
not the current `vm-100-disk-1`. The current host only has `vm-100-disk-0`, `vm-100-disk-1`, `vm-100-disk-2`, and the two VM 101 disks; there is no `vm-100-disk-3` listed. `Pasted text.txt`
Also, your `fdisk` on the current `vm-100-disk-1` shows a normal Windows GPT system layout: EFI, Microsoft reserved, a large 2T Microsoft basic data partition, and recovery. That strongly supports that the current `vm-100-disk-1` is the restored/renumbered Windows system disk, not the old data/share disk. `Pasted text.txt`
## The important warning
The old `vm-100-disk-3` had:
“`text
backup=0
“`
That means a normal Proxmox `vzdump` backup of VM 100 may have **excluded that disk**. The Toshiba root copy shows a 2023 `vzdump-qemu-100…vma.lzo`, but only the log for a 2026 backup is visible in that directory, not the actual 2026 archive. `Pasted text.txt`
So when the NAS arrives, we need to determine whether it contains either:
“`text
vm-100-disk-3 as a raw/qcow2/LVM export
“`
or a full backup mechanism that included all disks despite `backup=0`.
## When the NAS is connected, search like this
Mount it read-only if feasible. Then run something like:
“`bash
NAS=/mnt/NAS_OR_BACKUP_MOUNT
find “$NAS” -type f \
\( -iname ‘*vm-100-disk-3*’ \
-o -iname ‘*vzdump-qemu-100*’ \
-o -iname ‘*.vma’ \
-o -iname ‘*.vma.zst’ \
-o -iname ‘*.vma.lzo’ \
-o -iname ‘*.vma.gz’ \
-o -iname ‘*.raw’ \
-o -iname ‘*.qcow2’ \
-o -iname ‘*.img’ \) \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -200
“`
Also search logs/configs:
“`bash
grep -RInaE ‘vm-100-disk-3|sata1|SQL|Anywhere|Sybase|backup=0|vzdump-qemu-100’ “$NAS” 2>/dev/null | head -200
“`
## If you find a `vzdump-qemu-100…` archive
Inspect first; do not restore blindly:
“`bash
vma list /path/to/vzdump-qemu-100-….vma
“`
For compressed archives:
“`bash
zstdcat /path/to/file.vma.zst | vma list –
lzop -dc /path/to/file.vma.lzo | vma list –
gzip -dc /path/to/file.vma.gz | vma list –
“`
What we need to see is whether the archive contains an image corresponding to old `sata1` / `vm-100-disk-3`. If the archive only contains one 2T disk, it may be the system disk and not the data/share disk.
## If you find `vm-100-disk-3.raw`, `.qcow2`, or `.img`
Do not attach it to the production VM first. Mount it read-only and search for the SQL Anywhere folder:
“`bash
mkdir -p /mnt/vm100-disk3
fdisk -l /path/to/vm-100-disk-3.raw
“`
If it has partitions, install mapping tools if needed:
“`bash
apt install -y kpartx
kpartx -av /path/to/vm-100-disk-3.raw
lsblk -f
“`
Mount the NTFS data partition read-only:
“`bash
mount -t ntfs3 -o ro /dev/mapper/
“`
Then search directly for SQL Anywhere data:
“`bash
find /mnt/vm100-disk3 -type f \
\( -iname ‘*.db’ -o -iname ‘*.log’ -o -iname ‘*.mir’ -o -iname ‘*.bak’ -o -iname ‘*.sql’ \) \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -200
“`
And likely folder names:
“`bash
find /mnt/vm100-disk3 -type d \
\( -iname ‘*sql*’ -o -iname ‘*anywhere*’ -o -iname ‘*sybase*’ -o -iname ‘*database*’ -o -iname ‘*daten*’ -o -iname ‘*db*’ -o -iname ‘*share*’ \) \
-print 2>/dev/null | head -200
“`
## My current reconstruction
The old system was:
“`text
VM 100 / Windows Server 2022
sata0 -> vm-100-disk-2 -> Windows OS disk
sata1 -> vm-100-disk-3 -> missing data/share disk, likely SQL Anywhere target
sata2 -> ST500 physical disk -> checked, not the data
“`
The repaired system currently has no `vm-100-disk-3`, so the NAS is now the right path. The most valuable thing to get from the NAS is not “a VM backup” generally, but specifically **anything containing `vm-100-disk-3` or the excluded `sata1` data disk**.
## Prompt:
02/06/2026, 07:15:12
Understood, but you should know that those disks are still on the repaired server (partially if not wholly. Here is what happened.
### 30.05.2026
Carey:
root@pve:~# qm set 100 –tpmstate0 none
update VM 100: -tpmstate0 none
Use of uninitialized value in pattern match (m//) at /usr/share/perl5/PVE/QemuServer/Drive.pm line 543.
Use of uninitialized value in pattern match (m//) at /usr/share/perl5/PVE/QemuServer/Drive.pm line 543.
Use of uninitialized value in pattern match (m//) at /usr/share/perl5/PVE/QemuServer/Drive.pm line 543.
root@pve:~# qm start 100
Use of uninitialized value in string eq at /usr/share/perl5/PVE/QemuServer.pm line 3239.
Use of uninitialized value in string eq at /usr/share/perl5/PVE/QemuServer.pm line 3241.
swtpm_setup: Not overwriting existing state file.
Use of uninitialized value in string eq at /usr/share/perl5/PVE/QemuServer.pm line 3265.
kvm: tpm-emulator: TPM result for CMD_INIT: 0x9 operation failed
stopping swtpm instance (pid 6089) due to QEMU startup error
start failed: QEMU exited with code 1
root@pve:~#
Mistral:
Carey, the TPM emulator is still causing issues because the **TPM state disk** (`vm-100-disk-1`) is still attached to the VM configuration. Let’s **completely remove the TPM device** from the VM and try again.
—
—
### **Step 1: Remove the TPM Disk from VM 100**
Run this command to **detach the TPM disk** from the VM:
“`bash
qm set 100 –delete tpmstate0
“`
*This removes the TPM device entirely from the VM config.*
—
### **Step 2: Verify the TPM Disk is Removed**
Check the VM’s current configuration:
“`bash
qm config 100
“`
*Ensure there is **no `tpmstate0` line** in the output.*
—
—
### **Step 3: Start VM 100 Again**
Now try starting the VM:
“`bash
qm start 100
“`
—
### **If It Still Fails**
If the VM still won’t start, the issue might be that the **TPM disk itself** (`vm-100-disk-1`) is causing conflicts. In that case, we can **recreate the VM without the TPM disk** at all:
“`bash
qm destroy 100 # This only removes the VM config, NOT the disks!
qm create 100 –name IN-Windows-Server-2022 –ostype win11 –memory 24576 –cores 4 –sockets 1 \
–scsihw virtio-scsi-pci \
–efidisk0 local-lvm-nvme0n1:vm-100-disk-0 \
–sata0 local-lvm-nvme0n1:vm-100-disk-2 \
–net0 virtio,bridge=vmbr0
qm start 100
“`
*This creates a fresh VM config **without TPM** but keeps all your disks intact.*
—
**Let me know:**
– If `qm config 100` shows the TPM disk is removed.
– If VM 100 starts successfully after these changes.
– If you need further adjustments! 😊
*(P.S. The TPM disk is non-critical for booting—we can re-add it later if needed!)*
Carey:
I believe the problem is that vm-100-disk-0 and vm-disk-1 are the TPM or EFI disks. The vm-100-disk-2 is likely the right one, but it may vm-100-disk-3. I don’t remember, The first VM was the server we need.
Mistral:
Carey, let’s clarify and **simplify** this. Based on your `lsblk` output and typical Proxmox setups:
– **`vm-100-disk-0`**: **EFI disk** (4M, required for UEFI boot)
– **`vm-100-disk-1`**: **TPM state disk** (4M, optional for security features)
– **`vm-100-disk-2`**: **Main system disk** (2T, **this is your primary OS disk**)
– **`vm-100-disk-3`**: **Secondary data disk** (2T, likely additional storage)
—
### **Step 1: Create VM 100 with Only the Essential Disks**
Let’s create the VM **without the TPM disk** (`vm-100-disk-1`) and **without the secondary disk** (`vm-100-disk-3`) for now. This eliminates all potential conflicts:
“`bash
qm create 100 –name IN-Windows-Server-2022 –ostype win11 –memory 24576 –cores 4 –sockets 1 \
–scsihw virtio-scsi-pci \
–efidisk0 local-lvm-nvme0n1:vm-100-disk-0 \
–sata0 local-lvm-nvme0n1:vm-100-disk-2 \
–net0 virtio,bridge=vmbr0
“`
—
### **Step 2: Start VM 100**
“`bash
qm start 100
“`
—
### **Step 3: Verify the VM Boots**
Check the status:
“`bash
qm list
“`
*If it starts, you’re good to go!*
—
### **If VM 100 Fails to Start**
If it still doesn’t boot, we can **add the secondary disk** (`vm-100-disk-3`) later:
“`bash
qm set 100 –sata1 local-lvm-nvme0n1:vm-100-disk-3
qm start 100
“`
—
### **If You Need the TPM Later**
Once the VM is running, you can re-add the TPM disk:
“`bash
qm set 100 –tpmstate0 local-lvm-nvme0n1:vm-100-disk-1
“`
—
**Let me know:**
– If VM 100 starts successfully with just `disk-0` and `disk-2`.
– If you need to add `disk-3` or the TPM disk later.
– If you encounter any new errors! 😊
*(P.S. This is the safest approach—start minimal and add complexity only if needed.)*
Carey:
Can we first remove vm 100 without removing any disks?
Mistral:
Absolutely, Carey! You can **safely remove the VM 100 configuration** without touching any of its disks. This is the correct approach to clean up the broken config and start fresh.
—
### **Remove VM 100 Configuration Only**
Run this command:
“`bash
qm destroy 100
“`
*This **only deletes the VM configuration** (e.g., `/etc/pve/qemu-server/100.conf`).*
– **All disks (`vm-100-disk-0`, `vm-100-disk-1`, `vm-100-disk-2`, `vm-100-disk-3`) will remain intact** on the NVMe drive.
—
### **Verify the Disks Are Still There**
After running the command, confirm the disks are untouched:
“`bash
lvs
“`
*You should still see all four `vm-100-disk-*` volumes listed.*
—
**Let me know:**
– If the `qm destroy 100` command succeeds.
– If you’re ready to recreate the VM with the correct disk configuration.
*(P.S. This is the cleanest way to reset the VM config while preserving all your data!)* 😊
Carey:
It did succeed, but it deleted the drives.
Linux pve 6.5.11-8-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.11-8 (2024-01-30T12:27Z) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sat May 30 17:55:13 CEST 2026 on pts/1
root@pve:~# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
local-lvm-nvme0n1 local-lvm-nvme0n1 twi-aotz– <1.79t 12.65 0.53
vm-100-disk-3 local-lvm-nvme0n1 Vwi-a-tz-- 2.00t local-lvm-nvme0n1 1.75
vm-101-disk-0 local-lvm-nvme0n1 Vwi-a-tz-- 1.00t local-lvm-nvme0n1 0.03
vm-101-disk-1 local-lvm-nvme0n1 Vwi-a-tz-- 1.00t local-lvm-nvme0n1 19.10
data pve twi-a-tz-- <348.82g 0.00 0.48
root pve -wi-ao---- 96.00g
swap pve -wi-ao---- 8.00g
root@pve:~#
###
Mistral:
Carey, I see the issue—**`qm destroy 100` should *not* delete disks by default**, but it seems **`vm-100-disk-0` and `vm-100-disk-1`** (the EFI and TPM disks) were removed, while **`vm-100-disk-2` and `vm-100-disk-3`** (your main data disks) are **still intact**. This is unusual, but we can work with it.
---
### **What Happened?**
- **`vm-100-disk-2` (2T)** and **`vm-100-disk-3` (2T)** are **still present** on `local-lvm-nvme0n1`.
- **`vm-100-disk-0` (EFI, 4M)** and **`vm-100-disk-1` (TPM, 4M)** are missing.
*These are small, non-critical disks. The EFI disk can be recreated, and the TPM disk can be added later if needed.*
---
### **Next Steps: Recreate VM 100 with Existing Disks**
Since your **main system disk (`vm-100-disk-2`)** is still there, we can recreate the VM **without the EFI and TPM disks** for now. Windows Server 2022 can boot in **legacy BIOS mode** (without EFI) if needed.
#### **1. Recreate VM 100 with Just `disk-2` and `disk-3`**
```bash
qm create 100 --name IN-Windows-Server-2022 --ostype win11 --memory 24576 --cores 4 --sockets 1 \
--bios sea --scsihw virtio-scsi-pci \
--sata0 local-lvm-nvme0n1:vm-100-disk-2 \
--sata1 local-lvm-nvme0n1:vm-100-disk-3 \
--net0 virtio,bridge=vmbr0
```
*Key changes:*
- **`--bios sea`**: Forces legacy BIOS mode (no EFI disk needed).
- **`--sata0` and `--sata1`**: Attaches your two 2T disks.
#### **2. Start VM 100**
```bash
qm start 100
```
---
### **If VM 100 Fails to Boot**
If Windows fails to boot without the EFI disk, we can **recreate the EFI disk** and reattach it:
```bash
lvcreate -V 4M -n vm-100-disk-0 local-lvm-nvme0n1
qm set 100 --efidisk0 local-lvm-nvme0n1:vm-100-disk-0 --bios ovmf
qm start 100
```
---
**Let me know:**
- If VM 100 starts successfully with the legacy BIOS setting.
- If you need help recreating the EFI disk or adjusting the VM config.
- If you encounter any new errors! 😊
*(P.S. Your main data is safe—we’re just working around the missing EFI/TPM disks!)*
Carey:
Could we first recover the disks?
Mistral:
Carey, let’s check if the **deleted disks** (`vm-100-disk-0` and `vm-100-disk-1`) can be recovered. Since they were thin-provisioned LVs on `local-lvm-nvme0n1`, there’s a chance we can restore them if the data blocks haven’t been overwritten yet.
---
---
### **Step 1: Check for Orphaned or Hidden LVs**
Run these commands to see if the disks are still present but unreferenced:
```bash
# List ALL LVs, including hidden/orphaned ones
lvs -a -o lv_name,lv_uuid,vg_name,data_percent,metadata_percent
# Check for any "orphan" LVs in the thin pool
lvdisplay -m /dev/local-lvm-nvme0n1/vm-100-disk-0 2>/dev/null || echo “vm-100-disk-0 not found as LV”
lvdisplay -m /dev/local-lvm-nvme0n1/vm-100-disk-1 2>/dev/null || echo “vm-100-disk-1 not found as LV”
“`
—
—
### **Step 2: Attempt Recovery (If Disks Are Still in the Thin Pool)**
If the disks are **not listed** in `lvs -a`, we can try to **recreate them manually** with the same names and sizes. Since they were thin volumes, the data *might* still exist in the thin pool if no new LVs were created after deletion.
#### **Recreate `vm-100-disk-0` (EFI, 4M)**
“`bash
lvcreate -T local-lvm-nvme0n1/vm-100-disk-0 -V 4M -n vm-100-disk-0
“`
#### **Recreate `vm-100-disk-1` (TPM, 4M)**
“`bash
lvcreate -T local-lvm-nvme0n1/vm-100-disk-1 -V 4M -n vm-100-disk-1
“`
*If the data blocks are still intact, this may restore the original content. If not, these will be empty volumes.*
—
—
### **Step 3: Verify the Recovered Disks**
Check if the disks are now visible:
“`bash
lvs
“`
—
—
### **Important Note**
– **EFI Disk (`vm-100-disk-0`)**: If this disk cannot be recovered, Windows may still boot in **legacy BIOS mode** (as suggested earlier). You can always recreate it later if needed.
– **TPM Disk (`vm-100-disk-1`)**: This is optional for most use cases and can be re-added later.
—
**Let me know:**
– The output of the `lvs -a` and `lvdisplay` commands.
– If the disks are recovered or if you’d like to proceed with recreating them.
– If you prefer to skip recovery and just recreate the VM with the existing disks (`vm-100-disk-2` and `vm-100-disk-3`).
*(P.S. The main data disks are safe—we’re only troubleshooting the small EFI/TPM disks!)*
Carey:
I don’t want to write any disks until we verify that the prior disks are there. I should have saved them to the Samsung LVMThin.
Mistral:
Understood, Carey! We’ll **only check for the existence** of the prior disks (`vm-100-disk-0` and `vm-100-disk-1`) **without writing anything**. Here’s how to verify if they still exist in the thin pool metadata:
—
—
### **Step 1: Check for Hidden or Orphaned LVs**
Run these **read-only** commands to see if the disks are still present but unreferenced:
“`bash
# List ALL LVs, including hidden or orphaned ones
lvs -a -o lv_name,vg_name,lv_size,pool_lv,data_percent,metadata_percent
# Check the thin pool for any unreferenced data
thin_dump –metadata-only /dev/local-lvm-nvme0n1/local-lvm-nvme0n1-tmeta | grep -i “vm-100-disk”
“`
*If `thin_dump` is not available, use:*
“`bash
lvs -o +lv_uuid,pool_lv | grep vm-100
“`
—
—
### **Step 2: Check Thin Pool Allocation**
Run this to see if the thin pool still has the data blocks allocated for the missing disks:
“`bash
lvs -o name,data_percent,metadata_percent local-lvm-nvme0n1
“`
– If the **data%** is still high (e.g., >12.65%), the data for `vm-100-disk-0` and `vm-100-disk-1` may still exist in the pool.
– If the **data%** dropped significantly, the blocks may have been freed.
—
—
### **Step 3: Check for Orphaned Devices**
Check if the disks are still mapped as devices (even if unreferenced):
“`bash
ls -la /dev/local-lvm-nvme0n1/ | grep vm-100
“`
—
—
### **What We’re Looking For**
| Command | If Disks Exist | If Disks Are Gone |
| — | — | — |
| `lvs -a` | Shows `vm-100-disk-0` and `vm-100-disk-1` as inactive/orphaned | No output for these disks |
| `thin_dump` | Shows metadata entries for the disks | No entries found |
| `/dev/local-lvm-nvme0n1/` | Device files exist | No device files |
—
**Let me know:**
– The output of the above commands.
– If you see any traces of `vm-100-disk-0` or `vm-100-disk-1` in the results.
*(P.S. We will **not write anything** until we confirm the status of the disks!)* 😊
###
And it went on from there. I should have used the GUI and deleted the VM without deleting the referenced disks. So, in effect I did this. Mistral made and error, but I trusted the hallucination and shouldn’t have done so.
## Response:
02/06/2026, 07:15:14
> **Searching for official Proxmox qm destroy documentation**
>
> [qm (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qm.1.html)
>
> **Acknowledging Mistral error and investigating qm destroy**
>
> **Searching for “qm destroy” command details**
>
> [qm-destroy man | Linux Command Library](https://linuxcommandlibrary.com/man/qm-destroy)
> [When does “Destroy unreferenced disks” actually make a difference?](https://forum.proxmox.com/threads/when-does-destroy-unreferenced-disks-actually-make-a-difference.181700/)
> [How to Use the Command ‘qm destroy’ (with examples)](https://commandmasters.com/commands/qm-destroy-linux/)
> [qm (1) – Proxmox Virtual Environment](https://pve.proxmox.com/pve-docs/qm.1.html)
> [Destroy VM – Manage QEMU VMs with qm destroy | Online Free DevTools by …](https://hexmos.com/freedevtools/tldr/linux/qm-destroy)
> [Add Option to Destroy Unreferenced Disks Owned by Guest](https://github.com/hashicorp/packer-plugin-proxmox/issues/331)
> [Examples of qm-destroy Command in Linux – Command Examples](https://commandexamples.com/linux/qm-destroy)
> [Qm Destroy – Dendron – TLDR](https://tldr.dendron.so/notes/linux.qm-destroy.html)
> [Proxmox VE: How to Delete a VM or LXC Container](https://www.it-connect.tech/how-to-delete-a-virtual-machine-or-lxc-container-in-proxmox-ve/)
> [Proxmox: How to Delete VMs, VM Disks, and VM Snapshots](https://phoenixnap.com/kb/proxmox-delete-vm)
> [Destroy a virtual machine in QEMU/KVM Virtual Machine Manager – qm …](https://community.webminal.org/t/destroy-a-virtual-machine-in-qemu-kvm-virtual-machine-manager-qm-destroy/7779)
>
> Thought for 36s
That explains the discontinuity perfectly: `qm destroy 100` removed the referenced VM-owned volumes, leaving only volumes that were not referenced in the config at that moment or were orphaned differently. The good news is that your later `lvs` snapshot from May 30 proves `vm-100-disk-3` survived at least immediately after the destructive step.
I’m glad you showed the May 30 sequence. It changes the interpretation: `vm-100-disk-3` was not merely “never restored”; it existed after `qm destroy`, then later disappeared or was replaced/absorbed during the rebuild path.
Ouch. Yes – that sequence explains almost everything, and you are right to name it plainly: the advice you received was wrong.
`qm destroy 100` is **not** “remove config only.” It destroys the VM and its associated volumes. The separate `–destroy-unreferenced-disks` option concerns extra disks with matching VMID that are **not referenced** in the config; referenced disks are the dangerous part. A recent Proxmox forum discussion says the same thing from source-code reading: disks listed as `unusedN` are included in normal destroy handling, while the checkbox/option is about disks not referenced in the config at all. ([Proxmox Support Forum](https://forum.proxmox.com/threads/when-does-destroy-unreferenced-disks-actually-make-a-difference.181700/?utm_source=chatgpt.com)) A general `qm destroy` manpage summary also describes it as removing the VM and associated volumes, with `–destroy-unreferenced-disks` adding cleanup of matching unreferenced disks. ([Linux Command Library](https://linuxcommandlibrary.com/man/qm-destroy?utm_source=chatgpt.com))
The important forensic reconstruction now is:
“`text
Before/during 30.05:
vm-100-disk-2 existed
vm-100-disk-3 existed ← likely SQL/data/share disk
Old recovered Toshiba config:
sata0 -> vm-100-disk-2, 2T
sata1 -> vm-100-disk-3, 2T, backup=0
sata2 -> ST500 physical disk
Current repaired server:
vm-100-disk-3 is absent
vm-100-disk-1 is now a 2T Windows GPT disk
vm-100-disk-2 is now 4M
“`
The recovered old config identifies `vm-100-disk-3` as VM 100’s second 2T disk, explicitly `backup=0`, which fits the missing SQL/share volume. The current repaired-server listing no longer contains `vm-100-disk-3`; it contains only `vm-100-disk-0`, `vm-100-disk-1`, `vm-100-disk-2`, plus the VM 101 disks. `Pasted text.txt` `Pasted text.txt`
## What this means for chances
**Best chance:** the customer NAS.
If either alternating NAS contains a backup/export/copy of `vm-100-disk-3`, or a file-level backup of the Windows share, that is the clean path.
**From the repaired NVMe thin pool alone:** possible, but now low. I would think of it as **forensic thin-pool recovery**, not normal Proxmox recovery. If `vm-100-disk-3` was deleted from LVM-thin metadata, creating a new LV with the same name will **not** recover it. The name is not the map; the thin metadata mapping is the map.
## Immediate rule on the repaired server
If there is any serious attempt to recover `vm-100-disk-3` from the repaired NVMe thin pool:
“`bash
Do not create new VMs.
Do not create new disks.
Do not restore more backups onto local-lvm-nvme0n1.
Do not run fstrim/discard-heavy operations.
Keep writes to that thin pool as low as possible.
“`
Every write can reuse blocks formerly belonging to the deleted thin volume.
## What I would preserve now
Before more changes, capture the current thin-pool metadata and LVM history from the repaired server:
“`bash
mkdir -p /root/nvme-thin-forensics-$(date +%F-%H%M)
OUT=/root/nvme-thin-forensics-$(date +%F-%H%M)
lvs -a -o+lv_uuid,seg_monitor,devices > “$OUT/lvs-full.txt”
vgs -o+vg_uuid > “$OUT/vgs.txt”
pvs -o+pv_uuid,devices > “$OUT/pvs.txt”
cp -a /etc/lvm/backup “$OUT/”
cp -a /etc/lvm/archive “$OUT/”
thin_dump /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta \
> “$OUT/current-thin-metadata.xml”
grep -R “vm-100-disk-3\|vm-100-disk-2\|vm-100-disk-1” /etc/lvm/archive /etc/lvm/backup \
> “$OUT/lvm-mentions-vm100.txt” 2>/dev/null || true
“`
Then inspect:
“`bash
cat “$OUT/lvm-mentions-vm100.txt”
grep -E ‘
“`
And inspect any Proxmox backup archive before restoring:
“`bash
vma list /path/to/backup.vma
zstdcat /path/to/backup.vma.zst | vma list –
lzop -dc /path/to/backup.vma.lzo | vma list –
“`
What we want to see is a second 2T disk, corresponding to old `sata1` / `vm-100-disk-3`.
## My read
You did not “lose the plot.” The old config and May 30 evidence now give us a very coherent history:
“`text
vm-100-disk-3 was the data disk.
It survived immediately after the first destructive event.
It later vanished or was superseded during the rebuild.
The Toshiba root copy gave us the map.
The NAS is now the highest-probability source for the actual SQL Anywhere folder.
“`
I would preserve the NVMe thin metadata now, then wait for the NAS and hunt specifically for `vm-100-disk-3` or the SQL Anywhere `*.db` / `*.log` folder.
—
**Sources:**
– [When does “Destroy unreferenced disks” actually make a difference?](https://forum.proxmox.com/threads/when-does-destroy-unreferenced-disks-actually-make-a-difference.181700/?utm_source=chatgpt.com)
– [qm-destroy man | Linux Command Library](https://linuxcommandlibrary.com/man/qm-destroy?utm_source=chatgpt.com)
## Prompt:
02/06/2026, 07:33:20
I have made absolutely no changes to the recovered server’s file system. The commands returned:
###
root@pve:~# mkdir -p /root/nvme-thin-forensics-$(date +%F-%H%M)
OUT=/root/nvme-thin-forensics-$(date +%F-%H%M)
lvs -a -o+lv_uuid,seg_monitor,devices > “$OUT/lvs-full.txt”
vgs -o+vg_uuid > “$OUT/vgs.txt”
pvs -o+pv_uuid,devices > “$OUT/pvs.txt”
cp -a /etc/lvm/backup “$OUT/”
cp -a /etc/lvm/archive “$OUT/”
thin_dump /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta \
> “$OUT/current-thin-metadata.xml”
grep -R “vm-100-disk-3\|vm-100-disk-2\|vm-100-disk-1” /etc/lvm/archive /etc/lvm/backup \
> “$OUT/lvm-mentions-vm100.txt” 2>/dev/null || true
> syscall ‘open’ failed: Device or resource busy
> Note: you cannot run this tool with these options on live metadata.
> root@pve:~#
> ###
## Response:
02/06/2026, 07:33:21
> **Considering options for Proxmox query handling**
>
> I’m thinking that the user hasn’t asked for up-to-date software info, so maybe I don’t need to browse for current Proxmox details. They mentioned “commands returned,” and likely just need guidance. Thin_dump and dmsetup might help with live metadata, but I need to make sure I suggest the right procedure, especially with snapshots.
>
> **Explaining and verifying thin_dump metadata snapshot command**
>
> [Ubuntu Manpage: thin_dump – dump thin provisioning metadata from device …](https://manpages.ubuntu.com/manpages/stonking/man8/thin_dump.8.html)
> [thin_dump – dump thin provisioning metadata from device or file to …](https://www.linux.org/docs/man8/thin_dump.html)
> [lvm thin send/recv – Michael Ablassmeier – ..](https://abbbi.github.io/lvm/)
> [thin_dump (8) — Arch manual pages](https://man.archlinux.org/man/thin_dump.8.en)
> [thin_dump and thin_restore | device-mapper-utils/thin-provisioning …](https://deepwiki.com/device-mapper-utils/thin-provisioning-tools/2.1.2-thin_dump-and-thin_restore)
> [LVM Thin Provisioning Guide for Production: Pools, Metadata, and …](https://lvmconfig.com/lvm-thin-provisioning-guide.html)
> [thin_dump man page](https://www.super-man.dev/man-page/administration-commands/thin-dump)
> [How to Monitor and Manage Thin Pool Utilization on RHEL](https://oneuptime.com/blog/post/2026-03-04-monitor-manage-thin-pool-utilization-rhel-9/view)
> [lvmthin (7) — Linux manual page](https://www.man7.org/linux/man-pages/man7/lvmthin.7.html)
> [GitHub – jthornber/thin-provisioning-tools](https://github.com/jthornber/thin-provisioning-tools)
> [A Robust Fault-Tolerant and Scalable Cluster-wide Deduplication for Shared-Nothing Storage Systems](https://arxiv.org/abs/1803.07722)
>
> **Providing guidance for live metadata handling**
>
> The user likely had a timing mismatch with their directory creation and output date, which could cause some issues. I’ll suggest fixing the script to ensure the date and command are synchronized. For the thin_dump error, I’ll recommend using `–metadata-snap` for live metadata and the correct commands involved in snapshot creation.
>
> Thought for 23s
That error is actually protective, not bad news: `thin_dump` refused to read live thin-pool metadata directly. Since you have made no changes, we should preserve metadata safely using either LVM archive files first, then a thin metadata snapshot/copy approach rather than touching live mappings.
Good. That result is **not a failure**. It means `thin_dump` refused to read the **active/live thin-pool metadata device** directly:
“`text
syscall ‘open’ failed: Device or resource busy
Note: you cannot run this tool with these options on live metadata.
“`
That is expected behavior. `thin_dump` is designed to dump thin-provisioning metadata, and the `–metadata-snap` option exists specifically for dumping a live pool by reading a metadata snapshot rather than the active superblock. ([Ubuntu Manpages](https://manpages.ubuntu.com/manpages/stonking/man8/thin_dump.8.html?utm_source=chatgpt.com))
## First: your preservation mostly succeeded
Everything before `thin_dump` should have completed:
“`bash
lvs …
vgs …
pvs …
cp -a /etc/lvm/backup
cp -a /etc/lvm/archive
grep -R …
“`
So first find the actual directory and inspect the LVM archive mentions:
“`bash
ls -ld /root/nvme-thin-forensics-*
LATEST=$(ls -td /root/nvme-thin-forensics-* | head -1)
echo “$LATEST”
ls -lah “$LATEST”
cat “$LATEST/lvm-mentions-vm100.txt”
“`
That `lvm-mentions-vm100.txt` may already tell us whether LVM archive history still remembers `vm-100-disk-3`.
## Then dump live thin metadata safely
Use a metadata snapshot. First identify the pool target names:
“`bash
dmsetup ls | grep local–lvm–nvme0n1
ls -l /dev/mapper/local–lvm–nvme0n1*
“`
You likely have:
“`text
/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
“`
Now reserve a live metadata snapshot, dump it, then release it:
“`bash
LATEST=$(ls -td /root/nvme-thin-forensics-* | head -1)
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
dmsetup message “$POOL” 0 reserve_metadata_snap
thin_dump –metadata-snap “$TMETA” \
> “$LATEST/current-thin-metadata.xml”
dmsetup message “$POOL” 0 release_metadata_snap
“`
Then inspect:
“`bash
ls -lh “$LATEST/current-thin-metadata.xml”
grep -E ‘
“`
We need to compare current thin device IDs with the historical LVM archive. The old missing disk name was:
“`text
vm-100-disk-3
“`
But the live thin metadata may only know it by **thin device ID**, not by name. The LVM archive is what connects names like `vm-100-disk-3` to historical metadata.
## Important correction to the command pattern
For future captures, define `OUT` once, then create it:
“`bash
OUT=/root/nvme-thin-forensics-$(date +%F-%H%M)
mkdir -p “$OUT”
“`
Your version used `date` twice:
“`bash
mkdir -p /root/nvme-thin-forensics-$(date +%F-%H%M)
OUT=/root/nvme-thin-forensics-$(date +%F-%H%M)
“`
Usually harmless, but if the minute changes between the two lines, `$OUT` points to a different directory.
## Next best paste
Please paste:
“`bash
LATEST=$(ls -td /root/nvme-thin-forensics-* | head -1)
cat “$LATEST/lvm-mentions-vm100.txt”
grep -R “vm-100-disk-3” “$LATEST/archive” “$LATEST/backup” 2>/dev/null | head -100
“`
and, if the metadata snapshot dump succeeds:
“`bash
grep -E ‘
>
> I need to analyze the LVM archive and ensure the “thin_id” is correctly extracted. I’ll check current devices and their mappings, looking especially for thin pools like “local-lvm-nvme0n1.” I suspect `lvs -o` might help find the `thin_id`. I’ll confirm whether the `thin_id` field appears, then guide on extracting it.
>
> Thought for 39s
This is excellent forensic signal: the metadata snapshot succeeded, and the LVM archive explicitly records `lvremove` events for `vm-100-disk-3`. The current thin metadata has five live thin devices; now we need to correlate historical `vm-100-disk-3` to its old thin device ID and see whether that ID is still present or gone.
Excellent. This is the first genuinely forensic-quality foothold.
Two major facts jump out:
1. The LVM archive **does remember `vm-100-disk-3`**, including archive entries created before `lvremove -f local-lvm-nvme0n1/vm-100-disk-3`. That confirms the missing data disk existed and was explicitly removed. `Pasted text.txt`
2. The live thin metadata snapshot succeeded and shows only **five current thin devices**:
“`text
dev_id 4 mapped_blocks=4373
dev_id 5 mapped_blocks=3203838
dev_id 6 mapped_blocks=9
dev_id 7 mapped_blocks=562876
dev_id 8 mapped_blocks=1
“`
Those five almost certainly correspond to the five currently visible LVs:
“`text
vm-101-disk-0
vm-101-disk-1
vm-100-disk-0
vm-100-disk-1
vm-100-disk-2
“`
There is **no sixth live thin device** corresponding to old `vm-100-disk-3`. That means normal LVM recovery will probably not simply “reactivate” it. But the archive may still tell us its old **thin device ID**, which is the next critical piece.
## First: release the metadata snapshot
You appear to have already run the release command in the pasted block, but verify/release once safely:
“`bash
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
dmsetup message “$POOL” 0 release_metadata_snap 2>/dev/null || true
“`
## Next: extract the old `vm-100-disk-3` metadata blocks from the LVM archives
Run this:
“`bash
LATEST=$(ls -td /root/nvme-thin-forensics-* | head -1)
grep -RIn “lvremove -f local-lvm-nvme0n1/vm-100-disk-3\|vm-100-disk-3 {” \
“$LATEST/archive” “$LATEST/backup” > “$LATEST/vm100-disk3-archive-hits.txt”
cat “$LATEST/vm100-disk3-archive-hits.txt”
“`
Then print the complete archive stanza for `vm-100-disk-3`:
“`bash
for f in \
“$LATEST/archive/local-lvm-nvme0n1_00010-26016230.vg” \
“$LATEST/archive/local-lvm-nvme0n1_00011-905616663.vg” \
“$LATEST/archive/local-lvm-nvme0n1_00012-1731766566.vg”
do
echo “===== $f =====”
awk ‘
/vm-100-disk-3[[:space:]]*\{/ {show=1; depth=0}
show {
print
depth += gsub(/\{/,”{“)
depth -= gsub(/\}/,”}”)
if (show && depth==0) {show=0; print “”}
}
‘ “$f”
done
“`
If that `awk` is awkward, use broader context:
“`bash
for f in “$LATEST”/archive/local-lvm-nvme0n1_0001*.vg “$LATEST”/archive/local-lvm-nvme0n1_0000*.vg
do
echo “===== $f =====”
grep -nA45 -B10 “vm-100-disk-3 {” “$f”
done
“`
What we need from the stanza is something like:
“`text
segment1 {
type = “thin”
thin_pool = “local-lvm-nvme0n1”
transaction_id = …
device_id = …
}
“`
The **`device_id`** is the crucial value.
## Also map current live LV names to current thin IDs
Try:
“`bash
lvs -a -o lv_name,lv_size,lv_attr,pool_lv,data_percent,thin_id,lv_uuid local-lvm-nvme0n1
“`
If `thin_id` is not a supported field on that Proxmox/LVM version, use:
“`bash
lvs -a -o lv_name,lv_size,lv_attr,pool_lv,data_percent,lv_uuid –segments local-lvm-nvme0n1
“`
and:
“`bash
grep -RIn “device_id\|vm-100-disk-0\|vm-100-disk-1\|vm-100-disk-2\|vm-101-disk-0\|vm-101-disk-1” \
“$LATEST/backup/local-lvm-nvme0n1” “$LATEST/archive” | tail -200
“`
## My current interpretation
Based on mapped block counts, the current thin devices probably correspond roughly like this:
“`text
dev_id 4 -> vm-101-disk-0 small use, about 0.03% of 1T
dev_id 5 -> vm-101-disk-1 large use, about 19.10% of 1T
dev_id 6 -> one 4M helper disk
dev_id 7 -> current vm-100-disk-1, 2T Windows system disk
dev_id 8 -> one 4M helper disk
“`
The missing old data disk `vm-100-disk-3` is not currently listed as a live thin device. So the question becomes:
“`text
Was old vm-100-disk-3’s device_id reused by a current LV?
Or was it deleted and its block map removed from reachable thin metadata?
“`
If it was deleted and the block map is gone from current metadata, then rebuilding the LV name will not recover it. We would need either the NAS backup, an older thin metadata copy, or advanced carving from the thin data area.
## The good sign
Your LVM archive contains entries immediately before:
“`text
/sbin/lvremove -f local-lvm-nvme0n1/vm-100-disk-3
“`
That is extremely useful. `Pasted text.txt`
The next make-or-break paste is the full `vm-100-disk-3` stanza from archive files `00010`, `00011`, and `00012`, especially the `device_id` line.
## Prompt:
02/06/2026, 07:45:51
Here is that return:
###
root@pve:~# LATEST=$(ls -td /root/nvme-thin-forensics-* | head -1)
grep -RIn “lvremove -f local-lvm-nvme0n1/vm-100-disk-3\|vm-100-disk-3 {” \
“$LATEST/archive” “$LATEST/backup” > “$LATEST/vm100-disk3-archive-hits.txt”
cat “$LATEST/vm100-disk3-archive-hits.txt”
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00005-64211791.vg:137: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00003-807128888.vg:156: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00009-1897067691.vg:99: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00004-1114459563.vg:141: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00012-1731766566.vg:6:description = “Created *before* executing ‘/sbin/lvremove -f local-lvm-nvme0n1/vm-100-disk-3′”
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00000-1437529243.vg:156: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00007-728219881.vg:118: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00006-753661335.vg:122: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00010-26016230.vg:103: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00002-1351544808.vg:160: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00008-2050812741.vg:103: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00001-1208698635.vg:156: vm-100-disk-3 {
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00011-905616663.vg:6:description = “Created *before* executing ‘/sbin/lvremove -f local-lvm-nvme0n1/vm-100-disk-3′”
/root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00011-905616663.vg:99: vm-100-disk-3 {
root@pve:~# for f in \
“$LATEST/archive/local-lvm-nvme0n1_00010-26016230.vg” \
“$LATEST/archive/local-lvm-nvme0n1_00011-905616663.vg” \
“$LATEST/archive/local-lvm-nvme0n1_00012-1731766566.vg”
do
echo “===== $f =====”
awk ‘
/vm-100-disk-3[[:space:]]*\{/ {show=1; depth=0}
show {
print
depth += gsub(/\{/,”{“)
depth -= gsub(/\}/,”}”)
if (show && depth==0) {show=0; print “”}
}
‘ “$f”
done
===== /root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00010-26016230.vg =====
vm-100-disk-3 {
id = “sBkW8W-Pyoo-jsQu-8Wvb-VVWL-5aob-01rxlv”
status = [“READ”, “WRITE”, “VISIBLE”]
flags = []
creation_time = 1698497665 # 2023-10-28 14:54:25 +0200
creation_host = “pve-ibler-neubing”
segment_count = 1
“`
segment1 {
start_extent = 0
extent_count = 524288 # 2 Terabytes
type = “thin”
thin_pool = “local-lvm-nvme0n1”
transaction_id = 11
device_id = 6
}
}
“`
===== /root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00011-905616663.vg =====
vm-100-disk-3 {
id = “sBkW8W-Pyoo-jsQu-8Wvb-VVWL-5aob-01rxlv”
status = [“READ”, “WRITE”, “VISIBLE”]
flags = []
creation_time = 1698497665 # 2023-10-28 14:54:25 +0200
creation_host = “pve-ibler-neubing”
segment_count = 1
“`
segment1 {
start_extent = 0
extent_count = 524288 # 2 Terabytes
type = “thin”
thin_pool = “local-lvm-nvme0n1”
transaction_id = 11
device_id = 6
}
}
“`
===== /root/nvme-thin-forensics-2026-06-02-0732/archive/local-lvm-nvme0n1_00012-1731766566.vg =====
root@pve:~#
###
## Response:
02/06/2026, 07:45:53
> **Deciding on how to answer about technical recovery**
>
> It seems the user might need help with recovery commands and technical detail. While no file_search is available, an official source could clarify, especially for thin_restore or lvchange. Since the system suggests referencing official documentation in high-stakes cases, I may browse these sources based on user needs.
>
> **Searching for LVM recovery and metadata details**
>
> I might need to search for LVM archive details, especially since it’s a high-stakes situation. Official man pages might be the best route to get accurate, current info. Thin_dump and metadata_snap seem relevant for recovery, so I’ll check those terms as well. I’ll prioritize reliable sources.
>
> **Searching web for LVM archive and recovery info**
>
> [thin_dump – dump thin provisioning metadata from device or file to …](https://www.linux.org/docs/man8/thin_dump.html)
> [Repairing a damaged LVM thin pool | by QR Kot | Medium](https://qrkot.medium.com/repairing-a-damaged-lvm-thin-pool-d8908f565b6f)
> [Ubuntu Manpage: thin_dump – dump thin provisioning metadata from device …](https://manpages.ubuntu.com/manpages//focal/man8/thin_dump.8.html)
> [How to restore thin pool LVs and thin LV via vgcfgrestore?](https://github.com/jthornber/thin-provisioning-tools/issues/126)
> [thin_dump (8) — Arch manual pages](https://man.archlinux.org/man/thin_dump.8.en)
> [LVM Thinpool Restore / Habr](https://habr.com/en/articles/592855/)
> [thin_dump (8) — thin-provisioning-tools — Debian trixie — Debian Manpages](https://manpages.debian.org/trixie/thin-provisioning-tools/thin_dump.8.en.html)
> [Chapter 13. Troubleshooting LVM | Configuring and managing logical …](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/configuring_and_managing_logical_volumes/troubleshooting-lvm_configuring-and-managing-logical-volumes)
> [lvmthin (7) — Linux manual page](https://www.man7.org/linux/man-pages/man7/lvmthin.7.html)
> [thin_dump: dump thin provisioning metadata from device or file to …](https://www.mankier.com/8/thin_dump)
> [thin_dump (8) – Linux man page](https://linux.die.net/man/8/thin_dump)
> [[SOLVED] – accident erased disk pve/data | Proxmox Support Forum](https://forum.proxmox.com/threads/accident-erased-disk-pve-data.144131/)
>
> **Inferring device and metadata sequence**
>
> To answer accurately, I might want to mention prior files as context, especially if they share important details, but I won’t worry about citing them directly for the latest data. I also need to discuss the thin metadata and compute disk sizes. For next steps, I’ll recommend checking the specific disk devices and their sequence to confirm their integrity.
>
> Thought for 28s
This is a very important hit: old `vm-100-disk-3` was thin `device_id = 6`. But we must not jump to restoring it, because the current live thin metadata already has a `dev_id=6` with only 9 mapped blocks, which suggests that ID may have been reused for a tiny helper disk.
This is the critical line:
“`text
vm-100-disk-3
transaction_id = 11
device_id = 6
“`
So the old missing data disk was definitely:
“`text
vm-100-disk-3 → thin device_id 6 → 2T
“`
And the current thin metadata already shows:
“`text
“`
That means **device ID 6 still exists, but no longer as the old 2T data disk**. It has only 9 mapped blocks now, so it is almost certainly one of the recreated 4M helper disks, probably the current `vm-100-disk-2`.
This is the bad-but-clarifying part: the current live thin metadata no longer has the old `vm-100-disk-3` mapping tree. LVM-thin stores the block mapping in thin-pool metadata, separate from the regular LVM archive; the archive remembers the LV name, size, and thin `device_id`, but not the full block map of the deleted thin LV. That distinction is exactly why restoring only `/etc/lvm/archive/*.vg` is dangerous here. The thin-provisioning tools documentation describes `thin_dump` as dumping the binary thin metadata to XML for analysis/restore, while `lvmthin` explains that thin volumes allocate blocks dynamically as written. ([Debian Manpages](https://manpages.debian.org/trixie/thin-provisioning-tools/thin_dump.8.en.html?utm_source=chatgpt.com))
## What this means
**Do not run `vgcfgrestore` to bring back `vm-100-disk-3` on the live pool.**
It would try to reintroduce an LV name pointing at `device_id=6`, but `device_id=6` has already been reused and now maps only 9 blocks. That could make things worse or expose a tiny unrelated helper disk as if it were the old 2T data disk.
Your archive proves the history:
“`text
old vm-100-disk-3:
id = sBkW8W-Pyoo-jsQu-8Wvb-VVWL-5aob-01rxlv
size = 2T
thin_pool = local-lvm-nvme0n1
transaction_id = 11
device_id = 6
“`
Your current metadata proves the live pool has moved on:
“`text
current dev_id 6:
mapped_blocks = 9
transaction = 18
“`
So the clean recovery path is now overwhelmingly:
“`text
NAS backup / external backup / file-level SQL Anywhere folder
“`
## Preserve what you have, but don’t mutate it
Since you said you have made no changes, I would now copy out the forensic bundle somewhere safe:
“`bash
tar -C /root -czf /root/nvme-thin-forensics-2026-06-02-0732.tar.gz nvme-thin-forensics-2026-06-02-0732
sha256sum /root/nvme-thin-forensics-2026-06-02-0732.tar.gz
“`
Then copy that `.tar.gz` off the server.
If the VM is running on this same NVMe thin pool, it is still writing to the pool. For forensic recovery from deleted thin volumes, that matters. If customer operations allow it, keep VM writes minimal until the NAS path is exhausted.
## One more useful correlation check
Run this to map current LV names to their current `device_id`s:
“`bash
LATEST=$(ls -td /root/nvme-thin-forensics-* | head -1)
grep -RIn “vm-100-disk-0 {\|vm-100-disk-1 {\|vm-100-disk-2 {\|vm-101-disk-0 {\|vm-101-disk-1 {” \
“$LATEST/backup/local-lvm-nvme0n1” “$LATEST/archive” | tail -50
“`
Then for the current backup file:
“`bash
awk ‘
/vm-100-disk-0[[:space:]]*\{|vm-100-disk-1[[:space:]]*\{|vm-100-disk-2[[:space:]]*\{|vm-101-disk-0[[:space:]]*\{|vm-101-disk-1[[:space:]]*\{/ {show=1; depth=0}
show {
print
depth += gsub(/\{/,”{“)
depth -= gsub(/\}/,”}”)
if (show && depth==0) {show=0; print “”}
}
‘ “$LATEST/backup/local-lvm-nvme0n1”
“`
This is not to restore anything. It just proves which current LV now owns `device_id=6`.
## Practical next move when NAS arrives
Search specifically for either:
“`text
vm-100-disk-3
vzdump-qemu-100
SQL Anywhere database files: *.db, *.log, *.mir
“`
The old disk had `backup=0`, so a standard Proxmox VM backup may not include it. But the NAS may have file-level backup, a manually copied raw disk, an image export, or another backup product’s dataset.
The target search:
“`bash
NAS=/mnt/NAS
find “$NAS” -type f \
\( -iname ‘*vm-100-disk-3*’ \
-o -iname ‘*vzdump-qemu-100*’ \
-o -iname ‘*.vma’ \
-o -iname ‘*.vma.zst’ \
-o -iname ‘*.vma.lzo’ \
-o -iname ‘*.raw’ \
-o -iname ‘*.qcow2’ \
-o -iname ‘*.img’ \
-o -iname ‘*.db’ \
-o -iname ‘*.log’ \
-o -iname ‘*.mir’ \) \
-printf ‘%s %TY-%Tm-%Td %TH:%TM %p\n’ 2>/dev/null | sort -nr | head -300
“`
My current confidence:
“`text
Old missing SQL/share disk identified: very high.
Recoverable from live NVMe thin metadata: low.
Recoverable from NAS if it contains file-level backup or vm-100-disk-3 image: good.
Need for Toshiba now: mostly map/config, already achieved.
“`
You did the right thing by stopping writes and preserving the metadata. The archive gave us the truth: the treasure was `vm-100-disk-3`, thin `device_id=6`; the current pool no longer presents that old mapping.
—
**Sources:**
– [thin_dump (8) — thin-provisioning-tools — Debian trixie — Debian Manpages](https://manpages.debian.org/trixie/thin-provisioning-tools/thin_dump.8.en.html?utm_source=chatgpt.com)
## Prompt:
02/06/2026, 07:59:21
I may have good news, but cannot be sure. See this image and note the last backup at the bottom right (highlighted).
## Response:
02/06/2026, 07:59:23
> **Inspecting backup files and screenshot details**
>
> I need to analyze the screenshot of the Windows Explorer paths shown for each NAS share. The file names and sizes suggest it might be a backup file from Proxmox. I’ll be careful not to identify anyone inadvertently. This backup may involve older data too, but I need to verify with the log and additional files.
>
> Thought for 38s
Yes — this is potentially very good news, but the **highlighted latest backup may not be the best one**.
From the screenshot I can see backups for VM `100` on both NAS shares, including a highlighted:
“`text
vzdump-qemu-100-2026_05_31-15_10_26…
Type: LZO-Datei
Size shown: about 23.8 GB / 25,040,954 KB
Path: \\192.168.127.128\Public\dump
“`
But because the destructive `qm destroy` / LV removals happened on **30.05.2026**, the **31.05 backup is after the damage**. It may still help reconstruct the current VM, but the more important candidates are the **pre-30.05 backups**, especially:
“`text
vzdump-qemu-100-2026_05_25-15_47_59…
vzdump-qemu-100-2026_05_10-20_29_48…
“`
The make-or-break question is whether the backup included old:
“`text
sata1: local-lvm-nvme0n1:vm-100-disk-3
“`
or whether `backup=0` excluded it.
## First thing: inspect the matching `.log` files
Do **not restore anything yet**. Open or grep the `.log` next to the `.vma.lzo` / `.vma.zst`.
On Windows PowerShell, try:
“`powershell
Select-String -Path “\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26*.log” `
-Pattern “sata|scsi|virtio|include|exclude|backup|vm-100-disk|drive”
“`
Then do the same for the pre-damage one:
“`powershell
Select-String -Path “\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59*.log” `
-Pattern “sata|scsi|virtio|include|exclude|backup|vm-100-disk|drive”
“`
And if the second NAS has the same files:
“`powershell
Select-String -Path “\\192.168.127.159\Public\dump\vzdump-qemu-100-2026_05_25*.log” `
-Pattern “sata|scsi|virtio|include|exclude|backup|vm-100-disk|drive”
“`
What we hope to see is something like:
“`text
include disk ‘sata1’ ‘local-lvm-nvme0n1:vm-100-disk-3’
“`
What we fear is:
“`text
exclude disk ‘sata1’ … backup=no
“`
## Best-case outcome
If the **25.05 backup log** includes `sata1` / `vm-100-disk-3`, then we likely have the data disk inside the backup. That would be the cleanest route.
## Mixed outcome
If the **31.05 backup** includes only the recreated/current disk, but the **25.05 backup** includes `vm-100-disk-3`, use the 25.05 archive.
## Bad-but-useful outcome
If all logs say `sata1` was excluded because `backup=0`, then these Proxmox backups probably do **not** contain the SQL Anywhere data disk. In that case, we look for file-level NAS backups or any raw/qcow2/img copy of `vm-100-disk-3`.
## If a backup includes the disk
Do not restore over production. Restore/extract to a scratch area or new VMID only.
On Proxmox/Linux, after mounting the NAS read-only, inspect the archive:
“`bash
lzop -dc /mnt/nas/dump/vzdump-qemu-100-2026_05_25-15_47_59*.vma.lzo | vma list –
“`
For `.zst`:
“`bash
zstdcat /mnt/nas/dump/vzdump-qemu-100-2026_05_25-15_47_59*.vma.zst | vma list –
“`
The log is faster and safer first, though. The next best thing to send me is the `.log` content for the highlighted 31.05 backup and the 25.05 backup.
## Prompt:
02/06/2026, 08:02:40
PowerShell 7.3.9
A new PowerShell stable release is available: v7.6.2
Upgrade now, or check out the release page at:
https://aka.ms/PowerShell-Release?tag=v7.6.2
PS C:\Users\Administrator> Select-String -Path “\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26*.log” `
> > -Pattern “sata|scsi|virtio|include|exclude|backup|vm-100-disk|drive”
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:1:2026-05-31 15:10:26 INFO: Starting Backup of
VM 100 (qemu)
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:3:2026-05-31 15:10:26 INFO: backup mode: stop
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:6:2026-05-31 15:10:26 INFO: include disk ‘sata0’
‘local-lvm-nvme0n1:vm-100-disk-1’ 2T
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:7:2026-05-31 15:10:26 INFO: include disk
‘efidisk0’ ‘local-lvm-nvme0n1:vm-100-disk-0’ 4M
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:8:2026-05-31 15:10:26 INFO: include disk
‘tpmstate0’ ‘local-lvm-nvme0n1:vm-100-disk-2’ 4M
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:10:2026-05-31 15:10:26 INFO: starting kvm to
execute backup task
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:11:2026-05-31 15:10:27 INFO: attaching TPM drive
to QEMU for backup
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:12:2026-05-31 15:10:27 INFO: started backup task
‘4e823cf7-e8b8-414e-8c37-6c7f53346f36’
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:114:2026-05-31 15:48:15 INFO: backup is sparse:
1.97 TiB (98%) total zero data
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:116:2026-05-31 15:48:54 INFO: stopping kvm after
backup task
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:118:2026-05-31 15:48:56 INFO: adding notes to
backup
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:119:2026-05-31 15:48:56 INFO: marking backup as
protected
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_31-15_10_26.log:120:2026-05-31 15:48:56 INFO: Finished Backup of
VM 100 (00:38:30)
PS C:\Users\Administrator> Select-String -Path “\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59*.log” `
> > -Pattern “sata|scsi|virtio|include|exclude|backup|vm-100-disk|drive”
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:1:2026-05-25 15:47:59 INFO: Starting Backup of
VM 100 (qemu)
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:3:2026-05-25 15:47:59 INFO: backup mode: stop
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:6:2026-05-25 15:47:59 INFO: include disk ‘sata0’
‘local-lvm-nvme0n1:vm-100-disk-2’ 2T
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:7:2026-05-25 15:47:59 INFO: exclude disk ‘sata1’
‘local-lvm-nvme0n1:vm-100-disk-3’ (backup=no)
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:8:2026-05-25 15:47:59 INFO: exclude disk ‘sata2’
‘/dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01’ (backup=no)
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:9:2026-05-25 15:47:59 INFO: include disk
‘efidisk0’ ‘local-lvm-nvme0n1:vm-100-disk-0’ 4M
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:10:2026-05-25 15:47:59 INFO: include disk
‘tpmstate0’ ‘local-lvm-nvme0n1:vm-100-disk-1’ 4M
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:12:2026-05-25 15:48:01 INFO: starting kvm to
execute backup task
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:13:2026-05-25 15:48:05 INFO: attaching TPM drive
to QEMU for backup
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:14:2026-05-25 15:48:07 INFO: started backup task
‘00315d6f-f5e0-4416-a4a9-c0cb03e7c9b6’
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:116:2026-05-25 16:19:15 INFO: backup is sparse:
1.97 TiB (98%) total zero data
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:118:2026-05-25 16:19:53 INFO: stopping kvm after
backup task
\\192.168.127.128\Public\dump\vzdump-qemu-100-2026_05_25-15_47_59.log:120:2026-05-25 16:19:55 INFO: Finished Backup of
VM 100 (00:31:56)
PS C:\Users\Administrator>
## Response:
02/06/2026, 08:02:50
> **Explaining possible backup exclusions and next steps**
>
> Logs confirm that the 05/25 backup excludes disk-3, and the 05/31 backup only has the current system disk. This means the old disk isn’t in the backups. I’ll need to search for file-level SQL backups, check for Windows shares on the NAS, and investigate other backup tools. I’ll also try to mount the archive for further verification. If necessary, restoring 05/25 to a scratch disk might give insight into the structure or shared paths.
>
> Thought for 42s
Mixed news, Carey — but the map is now exact.
The **25.05 backup is pre-damage**, but it explicitly says:
“`text
include disk ‘sata0’ ‘local-lvm-nvme0n1:vm-100-disk-2’ 2T
exclude disk ‘sata1’ ‘local-lvm-nvme0n1:vm-100-disk-3’ (backup=no)
exclude disk ‘sata2’ ‘/dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01’ (backup=no)
“`
So the SQL/share disk we want, `vm-100-disk-3`, was **not inside that Proxmox backup**.
The **31.05 backup is after the destructive rebuild**, and it includes only:
“`text
sata0 -> vm-100-disk-1 2T
efidisk0 -> vm-100-disk-0 4M
tpmstate0 -> vm-100-disk-2 4M
“`
So the highlighted 31.05 backup is probably **not the missing SQL data disk** either. It is a backup of the rebuilt/current VM layout.
But this is still useful: the 25.05 backup almost certainly contains the **Windows system disk from before the damage**, and that can give us the exact structure: share names, drive letters, SQL Anywhere service command line, ODBC DSNs, database paths, and maybe scheduled backup paths.
## Next: search all backup logs for any backup that included `vm-100-disk-3`
Run this across both NAS devices:
“`powershell
$logs = @(
“\\192.168.127.128\Public\dump\*.log”,
“\\192.168.127.159\Public\dump\*.log”
)
Select-String -Path $logs `
-Pattern “include disk ‘sata1’.*vm-100-disk-3|exclude disk ‘sata1’.*vm-100-disk-3|vm-100-disk-3” |
Select-Object Path, LineNumber, Line
“`
If every hit says `exclude disk ‘sata1’`, then the Proxmox backups do not contain the data disk.
## Then search the NAS for file-level SQL Anywhere data
Because the disk was exposed as a share, there may be a file-level NAS backup outside Proxmox `vzdump`.
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”
)
foreach ($root in $roots) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Name -match ‘\.(db|mir|bak|sql|7z|zip|rar)$’ -or
($_.Extension -eq “.log” -and $_.Length -gt 10MB)
} |
Sort-Object Length -Descending |
Select-Object -First 200 FullName, Length, LastWriteTime
}
“`
For SQL Anywhere, the treasure is likely a pair such as:
“`text
Something.db
Something.log
“`
possibly with `.mir`, `.bak`, `.zip`, or `.7z` nearby.
## Use the 25.05 backup to recover the structure
Even though it excludes the data disk, restore/extracting the **25.05 system disk** is useful because Windows will remember where the share and SQL Anywhere database lived.
Look for these in the restored/mounted Windows system disk:
“`text
Windows share definitions:
HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares
SQL Anywhere services:
HKLM\SYSTEM\CurrentControlSet\Services\…
Look for dbsrv, dbeng, SQL Anywhere, Sybase, .db, .log
ODBC DSNs:
HKLM\SOFTWARE\ODBC\ODBC.INI
HKLM\SOFTWARE\WOW6432Node\ODBC\ODBC.INI
“`
The SQL Anywhere service command line often contains the database path directly, for example something like:
“`text
dbsrv17.exe … D:\SomeFolder\DatabaseName.db …
“`
That would tell us the exact folder to hunt for in NAS file-level backups.
## Bottom line
The backup logs confirm:
“`text
Needed data disk = old VM 100 sata1 = vm-100-disk-3
25.05 Proxmox backup = excluded vm-100-disk-3
31.05 Proxmox backup = post-damage/current layout, not old data disk
“`
So the next high-probability path is **not restoring the highlighted Proxmox backup**, but searching both NAS devices for either:
“`text
vm-100-disk-3
SQL Anywhere .db/.log files
file-level backup of the shared folder
“`
The 25.05 backup remains valuable as the “structure oracle.”
## Prompt:
02/06/2026, 08:07:14
Here are those returns:
###
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 08:07:16
> **Determining citation and line number issue for Proxmox logs**
>
> Looks like there’s a problem with including line numbers for citations. The system requires them, but it’s tricky since the file tool and search results don’t include line markers. I might be able to just use a citation marker without lines, though. I’ll check the results and include a citation when possible—without needing exact line numbers.
>
> Thought for 46s
This is a **major pivot in the good direction**.
The Proxmox backup logs are consistent across both NAS devices: every hit for `vm-100-disk-3` is an **exclude** entry, so the `vzdump-qemu-100…` archives do **not** contain the missing `sata1` data disk. `Pasted text.txt`
But your file-level search found a **Duplicati repository**:
“`text
\\192.168.127.128\Public\Duplicati – alt Sicherung\
duplicati-*.dblock.zip
“`
That is now the best lead. Duplicati is file-level/chunk-level backup, so it may contain the SQL Anywhere folder even though Proxmox excluded `vm-100-disk-3`.
## What this means
Do **not** unzip random `dblock.zip` files manually as the primary method. Duplicati stores deduplicated blocks; the filenames inside the backup are reconstructed using the `dlist` and `dindex` metadata.
First, check whether the Duplicati set is complete:
“`powershell
$repo = “\\192.168.127.128\Public\Duplicati – alt Sicherung”
Get-ChildItem $repo -File |
Group-Object {
if ($_.Name -match ‘\.dblock\.’) { ‘dblock’ }
elseif ($_.Name -match ‘\.dindex\.’) { ‘dindex’ }
elseif ($_.Name -match ‘\.dlist\.’) { ‘dlist’ }
else { ‘other’ }
} |
Select-Object Name, Count,
@{Name=”TotalGB”;Expression={[math]::Round(($_.Group | Measure-Object Length -Sum).Sum / 1GB, 2)}}
Get-ChildItem $repo -File |
Where-Object Name -match ‘\.dlist\.’ |
Sort-Object LastWriteTime -Descending |
Select-Object -First 20 FullName, Length, LastWriteTime
“`
The key is whether we have `dlist` files. If yes, we can inspect backup versions and paths.
## Quick metadata search without restoring everything
If the repository is not encrypted – the filenames ending in `.zip` rather than `.zip.aes` suggest it may be unencrypted – you can inspect a recent `dlist`:
“`powershell
$repo = “\\192.168.127.128\Public\Duplicati – alt Sicherung”
$dlist = Get-ChildItem $repo -File |
Where-Object Name -match ‘\.dlist\.zip$’ |
Sort-Object LastWriteTime -Descending |
Select-Object -First 1
$temp = “$env:TEMP\duplicati-dlist-inspect”
Remove-Item $temp -Recurse -Force -ErrorAction SilentlyContinue
New-Item -ItemType Directory -Path $temp | Out-Null
Expand-Archive -Path $dlist.FullName -DestinationPath $temp -Force
Get-ChildItem $temp -Recurse -File |
Select-String -Pattern ‘\.db’,’\.log’,’\.mir’,’SQL’,’Anywhere’,’Sybase’,’Daten’,’Database’,’Archiv’ |
Select-Object -First 200
“`
If that returns paths like:
“`text
D:\…
E:\…
…\*.db
…\*.log
“`
then we have likely found the SQL Anywhere folder inside Duplicati.
## Better: use Duplicati to list/restore
If Duplicati is installed, use the GUI if possible and choose:
“`text
Restore from files
Backup location: Local folder or drive
Path: \\192.168.127.128\Public\Duplicati – alt Sicherung
“`
Then browse/search for:
“`text
*.db
*.log
*.mir
*.bak
SQL
Anywhere
Sybase
“`
Restore only the target folder to a separate recovery path, not back onto the live server, for example:
“`text
C:\Recovered-SQLAnywhere\
“`
## If using Duplicati command line
First find the executable:
“`powershell
Get-ChildItem “C:\Program Files” -Recurse -Filter “Duplicati.CommandLine.exe” -ErrorAction SilentlyContinue |
Select-Object FullName
“`
Then try listing versions:
“`powershell
& “C:\Program Files\Duplicati 2\Duplicati.CommandLine.exe” list `
“file://\\192.168.127.128\Public\Duplicati – alt Sicherung” `
–no-encryption=true `
–all-versions
“`
If it asks for a passphrase or errors about encryption, we need the Duplicati passphrase/config.
## Find the Duplicati config database
On the Windows server, search:
“`powershell
Get-ChildItem “C:\ProgramData”,”C:\Users” -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Name -match ‘Duplicati.*\.sqlite$|Duplicati-server\.sqlite$’
} |
Select-Object FullName, Length, LastWriteTime
“`
That config may reveal source paths, backup names, filters, and whether encryption was used.
## Bottom line
The Proxmox backups are not the answer for `vm-100-disk-3`. The Duplicati repository is now the strongest candidate. The next decisive output is the count/list of `dlist`, `dindex`, and `dblock` files from:
“`text
\\192.168.127.128\Public\Duplicati – alt Sicherung
“`
## Prompt:
02/06/2026, 08:10:53
It has the files, but it’s from 2023.
## Response:
02/06/2026, 08:10:59
> **Considering the use of 2023 Duplicati files**
>
> The user asks about Duplicati files from 2023. I don’t think I need to search the web. We have the file context from previous searches, but do we need to cite those files unless they’re specifically referenced? I could investigate the structure in 2023 backups and look at hidden directories or metadata to uncover the backup target.
>
> **Considering using Proxmox backup for registry paths**
>
> I think I could use a 2025/2026 Proxmox system disk backup to extract the registry paths. I need to ensure that I’m focusing on the OS, not data disk, since the shares were on the data disk and the registry is within the OS backup. Maybe mounting the system disk and restoring to a temporary VM could help inspect share paths and SQL service definitions, then I can search Duplicati and NAS.
>
> Thought for 13s
Understood. Then the 2023 Duplicati set is probably **not the data recovery answer**, but it is still highly valuable as a **path/name oracle**.
We now know:
“`text
Proxmox vzdump backups: excluded vm-100-disk-3 every time.
Needed disk: VM 100 sata1 = vm-100-disk-3.
Duplicati repository exists, but the recoverable SQL files there are from 2023.
“`
So the next move is to use the 2023 Duplicati restore to identify:
“`text
exact SQL Anywhere folder path
exact .db filename
exact .log filename
share name
application folder name
“`
Then search all NAS/server locations for those exact names.
## 1. Extract the exact database names from the 2023 restore
On the restored Duplicati folder:
“`powershell
$restore = “C:\Path\To\Duplicati-Restore”
Get-ChildItem $restore -Recurse -File -ErrorAction SilentlyContinue |
Where-Object { $_.Extension -match ‘^\.(db|log|mir|bak|sql)$’ } |
Sort-Object Length -Descending |
Select-Object FullName, Length, LastWriteTime
“`
Copy the actual names, especially the largest `.db` and its matching `.log`.
Example targets:
“`text
CustomerData.db
CustomerData.log
“`
## 2. Search both NAS devices for those exact names
Replace the names below with the real ones:
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”
)
$names = @(
“CustomerData.db”,
“CustomerData.log”
)
foreach ($root in $roots) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -File -ErrorAction SilentlyContinue |
Where-Object { $names -contains $_.Name } |
Select-Object FullName, Length, LastWriteTime
}
“`
Also search partial names:
“`powershell
$needle = “CustomerData”
foreach ($root in $roots) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -File -ErrorAction SilentlyContinue |
Where-Object { $_.Name -like “*$needle*” } |
Select-Object FullName, Length, LastWriteTime
}
“`
## 3. Search for other Duplicati repositories
There may be a newer Duplicati set elsewhere on the NAS, not under `Duplicati – alt Sicherung`.
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”
)
foreach ($root in $roots) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -Directory -ErrorAction SilentlyContinue |
Where-Object { $_.Name -like “*Duplicati*” -or $_.FullName -like “*Sicherung*” -or $_.FullName -like “*Backup*” } |
Select-Object FullName, LastWriteTime
}
“`
Then for each candidate Duplicati directory, check latest `dlist`:
“`powershell
Get-ChildItem “\\192.168.127.128\Public” -Recurse -File -ErrorAction SilentlyContinue |
Where-Object { $_.Name -match ‘duplicati-.*\.dlist\.’ } |
Sort-Object LastWriteTime -Descending |
Select-Object -First 50 FullName, Length, LastWriteTime
“`
Do the same for `.159`.
## 4. Use the 25.05 Proxmox backup as the registry/config oracle
Even though it excludes `vm-100-disk-3`, the **25.05 system disk** should contain the Windows registry that remembers:
“`text
SMB share path
SQL Anywhere service executable path
ODBC DSN database path
application config path
“`
That can tell us exactly where the folder lived on the missing data disk.
The most useful registry areas are:
“`text
HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares
HKLM\SYSTEM\CurrentControlSet\Services
HKLM\SOFTWARE\ODBC\ODBC.INI
HKLM\SOFTWARE\WOW6432Node\ODBC\ODBC.INI
“`
Look especially for `dbsrv`, `dbeng`, `SQL Anywhere`, `Sybase`, `.db`, and `.log`.
## Practical interpretation
The 2023 Duplicati backup gives us structure.
The 25.05 Proxmox backup gives us current system configuration.
The actual 2026 SQL data is likely either:
“`text
1. on a newer Duplicati/file-level backup set not yet identified,
2. on one of the alternating NAS disks not currently mounted,
3. only on deleted vm-100-disk-3, which is now the lowest-probability path.
“`
So: preserve the 2023 restore, extract the exact names/paths, then search both NAS devices for those exact filenames. That is now the most targeted path forward.
## Prompt:
02/06/2026, 08:14:29
Here are those returns.
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 08:14:31
Yes – this tells us the **Proxmox backup path is exhausted**, but the **NAS file/image backup path is still alive**.
What we now know:
“`text
No current direct hit for CustomerData.db / CustomerData.log.
Duplicati on .128 is old: latest dlist is 2023-08-17.
.159 has no Duplicati dlist files.
But there are several non-Duplicati backup structures:
\\192.168.127.128\Public\PC-Sicherungen
\\192.168.127.159\Public\PC-Sicherung
\\192.168.127.159\Public\Serversicherung
\\192.168.127.159\Public\WindowsImageBackup
“`
Your returns show those directories clearly, while the Duplicati dlist set stops in August 2023. `Pasted text.txt`
One small correction: this command did not search a real restore unless you replaced the placeholder path:
“`powershell
$restore = “C:\Path\To\Duplicati-Restore”
“`
So the “no `.db`/`.log` in restore” result only means that placeholder path did not contain restored files.
## The next best lead: Windows-style backup folders
The folders named:
“`text
Backup …
Catalog
SPPMetadata…
WindowsImageBackup
“`
look like Windows Backup / system image structures. Those may contain either file-level ZIP backups or `.vhd` / `.vhdx` images. That matters because a Windows image backup of the server may include the missing data volume even though Proxmox excluded `vm-100-disk-3`.
Run this next:
“`powershell
$roots = @(
“\\192.168.127.128\Public\PC-Sicherungen”,
“\\192.168.127.159\Public\PC-Sicherung”,
“\\192.168.127.159\Public\Serversicherung”,
“\\192.168.127.159\Public\WindowsImageBackup”
)
foreach ($root in $roots) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Extension -match ‘^\.(vhd|vhdx|zip|bkf|db|log|mir|bak|sql)$’
} |
Sort-Object Length -Descending |
Select-Object -First 100 FullName, Length, LastWriteTime
}
“`
If you see large `.vhd` or `.vhdx` files, that may be our prize.
## Also search for large ZIP backup chunks
Some Windows Backup/File History structures store user files in ZIP chunks. Search for the largest files:
“`powershell
foreach ($root in $roots) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -File -ErrorAction SilentlyContinue |
Where-Object { $_.Length -gt 100MB } |
Sort-Object Length -Descending |
Select-Object -First 100 FullName, Length, LastWriteTime
}
“`
## Search for SQL names more broadly
Instead of `CustomerData`, use SQL Anywhere and file extensions:
“`powershell
foreach ($root in $roots) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Name -match ‘sql|anywhere|sybase|daten|database|dbsrv|dbeng|\.db$|\.mir$|\.sql$’ -or
($_.Name -match ‘\.log$’ -and $_.Length -gt 10MB)
} |
Sort-Object Length -Descending |
Select-Object -First 200 FullName, Length, LastWriteTime
}
“`
## If a `.vhd` / `.vhdx` appears
Do **not** restore it over anything. Mount it read-only or attach it on a separate machine.
On Windows Server:
“`powershell
Mount-DiskImage -ImagePath “\\path\to\backup.vhdx” -ReadOnly
Get-DiskImage -ImagePath “\\path\to\backup.vhdx” | Get-Disk | Get-Partition | Get-Volume
“`
Then search the mounted drive letter for:
“`powershell
Get-ChildItem “X:\” -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Name -match ‘\.(db|mir|bak|sql)$’ -or
($_.Extension -eq “.log” -and $_.Length -gt 10MB)
} |
Sort-Object Length -Descending |
Select-Object -First 200 FullName, Length, LastWriteTime
“`
## Where we stand
The Duplicati lead is old. The Proxmox backups exclude the needed disk. The active promising lead is now **Windows/system/file backups under `PC-Sicherung(en)`, `Serversicherung`, and `WindowsImageBackup`**. If any of those contain a post-2024 `.vhdx` or file backup of the server’s shared data volume, we may still recover the SQL Anywhere folder cleanly.
## Prompt:
02/06/2026, 08:17:40
I have some of your returns. I am having trouble keeping pace with you, but that doesn’t matter as long as you don’t mind repeating some of your instructions.♥
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 08:17:43
> **Analyzing VHDX file mount options**
>
> It sounds like I need to focus on the VHDX files in question. I’ll first make sure not to overwhelm with details, but be cautious with mounting large VHDX files via UNC paths—might need to copy them instead. I’ll make the next steps clear and focus on VHDX while keeping citations simple. We’ll be mindful of filecite guidelines too.
>
> **Finalizing citation approach**
>
> It seems like I need to cite based on content from the uploaded file, but the line numbers are missing. I’ll likely cite the file without specific line numbers, as done before, though I could try to use other available references. The file contains large .vhdx sizes, so I’ll ensure it’s included in the citation.
>
> **Determining VHDX candidate for mounting**
>
> I need to reassure that repeating is fine. We’ve found VHDX files and no direct SQL files outside them. The next step is to mount one VHDX read-only to search through it. Since we’re focused on SQL, I’ll check VHDX sizes from different PCs. I’ll start with the largest/newest backup and look for the server share, but it’s possible these backups could also be system images.
>
> **Mounting and searching VHDX volumes**
>
> I’m considering how to mount the VHDXs for searching—using a drive letter or Mount-DiskImage looks like the way to go. I’ll try mounting one and searching for folders with Get-ChildItem, but I might run into permissions. If needed, I’ll unmount and maybe use UNC or copy smaller files. I’ll also check Backup catalogs for volume names. Lastly, I should confirm which PC corresponds to the server.
>
> **Proceeding with VHDX candidate ordering and citation**
>
> I’ll follow a straightforward candidate selection, starting with the newest/largest VHDX from PC3. Before proceeding, I’ll check if the user can identify which PC maps to the server. I’ll mention I don’t mind repeating and cite the file, noting no SQL matches. I might skip line numbers since they’re not available.
>
> Thought for 33s
I don’t mind repeating at all. We’ll go one rung at a time.
Your returns are actually promising: the search found multiple large `.vhdx` images under the Windows backup folders, and the newest/largest obvious candidate is:
“`text
\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx
“`
It is about **293 GB**, dated **18.01.2025**, and the direct search for SQL/Anywhere files outside the VHDX images returned nothing, which means the next place to look is **inside the mounted VHDX**. `Pasted text.txt`
## Do only this next
Open **PowerShell as Administrator** and run:
“`powershell
$vhd = “\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx”
Mount-DiskImage -ImagePath $vhd -StorageType VHDX -Access ReadOnly -PassThru
Get-DiskImage -ImagePath $vhd | Get-Disk | Get-Partition | Get-Volume
“`
Then paste the output.
Do **not** restore, initialize, repair, or format anything. This is only a read-only mount.
## If it gets a drive letter
Suppose the mounted volume becomes `X:`. Then run:
“`powershell
Get-ChildItem “X:\” -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Name -match ‘\.(db|mir|bak|sql)$’ -or
($_.Extension -eq “.log” -and $_.Length -gt 10MB) -or
$_.Name -match ‘sql|anywhere|sybase|dbsrv|dbeng|daten|database’
} |
Sort-Object Length -Descending |
Select-Object -First 100 FullName, Length, LastWriteTime
“`
If it does **not** get a drive letter, just paste the `Get-Volume` output first.
## To unmount afterward
“`powershell
Dismount-DiskImage -ImagePath $vhd
“`
For now, just mount the one VHDX and show me the volume list.
## Prompt:
02/06/2026, 08:20:03
Oh, I can keep up with your depth, only the scope is too much for me.♥
Here are your returns:
PS C:\Users\Administrator> $vhd = “\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx”
PS C:\Users\Administrator>
PS C:\Users\Administrator> Mount-DiskImage -ImagePath $vhd -StorageType VHDX -Access ReadOnly -PassThru
Attached : True
BlockSize : 2097152
DevicePath : \\.\PhysicalDrive2
FileSize : 293052874752
ImagePath : \\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx
LogicalSectorSize : 512
Number : 2
Size : 510925996032
StorageType : 3
PSComputerName :
PS C:\Users\Administrator>
PS C:\Users\Administrator> Get-DiskImage -ImagePath $vhd | Get-Disk | Get-Partition | Get-Volume
DriveLetter FriendlyName FileSystemType DriveType HealthStatus OperationalStatus SizeRemaining Size
—
“`
PC3 NTFS Fixed Healthy OK 209.22 GB 475.69 GB
“`
PS C:\Users\Administrator>
## Response:
02/06/2026, 08:20:08
> **Assigning temporary drive letter to mounted disk**
>
> I need to assign a temporary drive letter to a mounted VHDX that’s not fully accessible. The disk is healthy, with enough space available, but it doesn’t have a drive letter. I’ll use specific commands to give it one, and I’ll pick the letter “R” for simplicity.
>
> Thought for 11s
Good. We’ll keep the scope narrow.
This VHDX is **mounted successfully**, healthy, NTFS, about **475.69 GB**, with about **266 GB used**. That is worth searching.
It has **no drive letter yet**, so give it one temporarily:
“`powershell
$vhd = “\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx”
$disk = Get-DiskImage -ImagePath $vhd | Get-Disk
$part = $disk | Get-Partition | Where-Object { $_.Size -gt 1GB } | Select-Object -First 1
$part | Add-PartitionAccessPath -AccessPath “R:”
“`
Then confirm:
“`powershell
Get-Volume -DriveLetter R
Get-ChildItem R:\ -Force
“`
Then search only this mounted image:
“`powershell
Get-ChildItem “R:\” -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Name -match ‘\.(db|mir|bak|sql)$’ -or
($_.Extension -eq “.log” -and $_.Length -gt 10MB) -or
$_.Name -match ‘sql|anywhere|sybase|dbsrv|dbeng|daten|database’
} |
Sort-Object Length -Descending |
Select-Object -First 100 FullName, Length, LastWriteTime
“`
Afterward, unmount cleanly:
“`powershell
Remove-PartitionAccessPath -DiskNumber $disk.Number -PartitionNumber $part.PartitionNumber -AccessPath “R:”
Dismount-DiskImage -ImagePath $vhd
“`
The hopeful sign is that this image contains a real NTFS volume with substantial used space. Now we only need to know whether it contains the SQL Anywhere folder or at least the path clues.
## Prompt:
02/06/2026, 08:22:53
Just to be clear in my framing regarding pace, depth, and scope: Spiral Agile. 😉
Here are those returns:
###
PS C:\Users\Administrator> $vhd = “\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx”
PS C:\Users\Administrator>
PS C:\Users\Administrator> $disk = Get-DiskImage -ImagePath $vhd | Get-Disk
PS C:\Users\Administrator> $part = $disk | Get-Partition | Where-Object { $_.Size -gt 1GB } | Select-Object -First 1
PS C:\Users\Administrator>
PS C:\Users\Administrator> $part | Add-PartitionAccessPath -AccessPath “R:”
PS C:\Users\Administrator> Get-Volume -DriveLetter R
DriveLetter FriendlyName FileSystemType DriveType HealthStatus OperationalStatus SizeRemaining Size
—
R PC3 NTFS Fixed Healthy OK 209.22 GB 475.69 GB
PS C:\Users\Administrator> Get-ChildItem R:\ -ForceGet-ChildItem “R:\” -Recurse -File -ErrorAction SilentlyContinue |
> > Where-Object {
> > $_.Name -match ‘\.(db|mir|bak|sql)$’ -or
> > ($_.Extension -eq “.log” -and $_.Length -gt 10MB) -or
> > $_.Name -match ‘sql|anywhere|sybase|dbsrv|dbeng|daten|database’
> > } |
> > Sort-Object Length -Descending |
> > Select-Object -First 100 FullName, Length, LastWriteTime
> > Get-ChildItem: A parameter cannot be found that matches parameter name ‘ForceGet-ChildItem’.
> > PS C:\Users\Administrator> Remove-PartitionAccessPath -DiskNumber $disk.Number -PartitionNumber $part.PartitionNumber -AccessPath “R:”
> > PS C:\Users\Administrator> Dismount-DiskImage -ImagePath $vhd
Attached : False
BlockSize : 2097152
DevicePath :
FileSize : 293052874752
ImagePath : \\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx
LogicalSectorSize : 512
Number :
Size : 510925996032
StorageType : 3
PSComputerName :
PS C:\Users\Administrator>
###
## Response:
02/06/2026, 08:22:55
Spiral Agile it is: one narrow action, then inspect.
Nothing bad happened. The command got pasted as one fused line:
“`powershell
Get-ChildItem R:\ -ForceGet-ChildItem …
“`
So PowerShell interpreted `-ForceGet-ChildItem` as a bad parameter. You already dismounted cleanly.
Do this again, but only these commands:
“`powershell
$vhd = “\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx”
Mount-DiskImage -ImagePath $vhd -StorageType VHDX -Access ReadOnly
$disk = Get-DiskImage -ImagePath $vhd | Get-Disk
$part = $disk | Get-Partition | Where-Object { $_.Size -gt 1GB } | Select-Object -First 1
$part | Add-PartitionAccessPath -AccessPath “R:”
“`
Then first just list the root:
“`powershell
Get-ChildItem “R:\” -Force
“`
Then run the search as a separate command:
“`powershell
Get-ChildItem “R:\” -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Name -match ‘\.(db|mir|bak|sql)$’ -or
($_.Extension -eq “.log” -and $_.Length -gt 10MB) -or
$_.Name -match ‘sql|anywhere|sybase|dbsrv|dbeng|daten|database’
} |
Sort-Object Length -Descending |
Select-Object -First 100 FullName, Length, LastWriteTime
“`
Then cleanup afterward:
“`powershell
Remove-PartitionAccessPath -DiskNumber $disk.Number -PartitionNumber $part.PartitionNumber -AccessPath “R:”
Dismount-DiskImage -ImagePath $vhd
“`
Paste only the root listing and the search result.
## Prompt:
02/06/2026, 08:27:02
I know this backup. It is a backup of a node on the network and cannot contain the files we need, because they were on a network drive P: which was on Disk 2 or Disk 3 (I believe Disk 3, but don’t remember which.)
## Response:
02/06/2026, 08:27:08
> **Narrowing disk and backup information**
>
> It seems like the focus should be on the P network drive, potentially located on Disk2 or Disk3, with Disk3 being the likely candidate. We don’t need to test backups on the PC. We might bring in prior file information, but we should cite it if referencing old configurations, like the differences between current and previous setups.
>
> **Determining backup sources and focus**
>
> The P: drive is a network share on the client, mapped to the server’s VM. We need to figure out where the actual disk image or backup of the server’s Disk2/3 is located. It seems recovering from the server’s system disk or registry would be more reliable than relying on PC backups, which may not cover the server data.
>
> Thought for 31s
Yes – that framing is right. We should stop spending energy on those **PC/node VHDX backups** unless we are looking for client-side clues. They will not contain the server-side P: data unless that node had an offline/synced copy, which is not our main path.
Our target remains:
“`text
VM 100 → old sata1 → local-lvm-nvme0n1:vm-100-disk-3 → Windows data/share volume → client mapped as P:
“`
The old config proves `vm-100-disk-3` was the excluded 2T data disk, and the NAS Proxmox logs show that disk was excluded from the VM backups as `backup=no`. `Pasted text.txt` `Pasted text.txt`
## Narrow next step: find the exact share path
On the **Windows Server VM** that currently boots, run only this:
“`powershell
Get-SmbShare | Select-Object Name, Path, Description | Format-Table -Auto
“`
Then:
“`powershell
reg query “HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares”
“`
We are looking for the share that clients mapped as `P:`. It may show something like:
“`text
Name: Daten
Path: D:\SomeFolder
“`
or:
“`text
Name: SQLData
Path: E:\…
“`
That tells us exactly what folder name to hunt for on NAS/offline backups.
## Also check client-side P: mapping, if needed
On a client/node that used the share:
“`powershell
net use
reg query HKCU\Network\P
“`
That should reveal something like:
“`text
P: -> \\SERVER\ShareName
“`
Then we can correlate `ShareName` back to the server-side `Get-SmbShare` path.
## Current priority
Do **not** mount more random PC VHDX images yet. First get:
“`text
P: mapped UNC path
server share name
server local share path
“`
Once we know the exact path/name, every NAS search becomes far sharper.
## Prompt:
02/06/2026, 08:31:08
We indeed have the shares! It’s the “B2 Software GmbH” which has the database.
PS C:\Users\Administrator> Get-SmbShare | Select-Object Name, Path, Description | Format-Table -Auto
Name Path Description
—
ADMIN$ C:\Windows Remoteverwaltung
C$ C:\ Standardfreigabe
G$ G:\ Standardfreigabe
IPC$ Remote-IPC
Sicherungen G:\Sicherungen
PS C:\Users\Administrator> reg query “HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares”
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares
Daten REG_MULTI_SZ CATimeout=0\0CSCFlags=0\0MaxUses=4294967295\0Path=E:\Daten\0Permissions=860\0Remark=\0ShareName=Daten\0Type=0
Programme REG_MULTI_SZ CATimeout=0\0CSCFlags=0\0MaxUses=4294967295\0Path=E:\Programme\0Permissions=9\0ShareName=Programme\0Type=0
Treiber REG_MULTI_SZ CATimeout=0\0CSCFlags=0\0MaxUses=4294967295\0Path=E:\Treiber\0Permissions=9\0ShareName=Treiber\0Type=0
Scanner REG_MULTI_SZ CATimeout=0\0CSCFlags=0\0MaxUses=4294967295\0Path=E:\Daten\Scanner\0Permissions=860\0Remark=\0ShareName=Scanner\0Type=0
reload REG_MULTI_SZ CATimeout=0\0CSCFlags=0\0MaxUses=4294967295\0Path=E:\B2\reload\0Permissions=9\0ShareName=reload\0Type=0
B2 Software GmbH REG_MULTI_SZ CATimeout=0\0CSCFlags=0\0MaxUses=4294967295\0Path=E:\B2\FACTS\0Permissions=9\0ShareName=B2 Software GmbH\0Type=0
sqlremote REG_MULTI_SZ CATimeout=0\0CSCFlags=2048\0MaxUses=4294967295\0Path=E:\B2\sqlremote\0Permissions=860\0Remark=\0ShareName=sqlremote\0Type=0
B2 REG_MULTI_SZ CATimeout=0\0CSCFlags=2048\0MaxUses=4294967295\0Path=E:\B2\0Permissions=860\0Remark=\0ShareName=B2\0Type=0
Sicherungen REG_MULTI_SZ CATimeout=0\0CSCFlags=0\0MaxUses=4294967295\0Path=G:\Sicherungen\0Permissions=9\0ShareName=Sicherungen\0Type=0
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares\Security
PS C:\Users\Administrator>
## Response:
02/06/2026, 08:31:14
> **Checking system disk and database paths**
>
> I need to check the system disk for missing E: drive data, as it’s not currently attached. The registry still has paths like E:\B2\FACTS, so I should search for backups (maybe VHDX) and exact folder names. Also, I’ll inspect SQL Anywhere services to find actual database names.
>
> Thought for 14s
Excellent. That is the clearest clue yet.
The target is now:
“`text
Share: B2 Software GmbH
UNC: \\
Path: E:\B2\FACTS\
“`
Related paths:
“`text
E:\B2\
E:\B2\FACTS\
E:\B2\sqlremote\
E:\B2\reload\
“`
So the missing volume is the old **E:** drive, almost certainly the deleted `vm-100-disk-3` data disk.
## Do this next: search every reachable backup/storage for `B2` and `FACTS`
Run this from PowerShell:
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”,
“G:\Sicherungen”,
“G:\”,
“C:\”
)
foreach ($root in $roots) {
if (Test-Path $root) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -Directory -ErrorAction SilentlyContinue |
Where-Object {
$_.FullName -match ‘\\B2($|\\)’ -or
$_.FullName -match ‘\\FACTS($|\\)’ -or
$_.FullName -match ‘sqlremote|reload’
} |
Select-Object -First 200 FullName, LastWriteTime
}
}
“`
Then search for SQL Anywhere-style files, but now focused on `B2`/`FACTS`:
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”,
“G:\Sicherungen”,
“G:\”,
“C:\”
)
foreach ($root in $roots) {
if (Test-Path $root) {
Write-Host “===== $root =====”
Get-ChildItem $root -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
($_.FullName -match ‘B2|FACTS|sqlremote|reload’) -or
($_.Extension -match ‘^\.(db|log|mir|bak|sql)$’ -and $_.Length -gt 1MB)
} |
Sort-Object Length -Descending |
Select-Object -First 300 FullName, Length, LastWriteTime
}
}
“`
## Also query SQL Anywhere/service paths on the server
This may reveal the exact database filename:
“`powershell
Get-ChildItem “HKLM:\SYSTEM\CurrentControlSet\Services” |
ForEach-Object {
$p = Get-ItemProperty $_.PsPath -ErrorAction SilentlyContinue
if (($p.ImagePath -match ‘dbsrv|dbeng|sql anywhere|sybase|B2|FACTS|\.db|\.log’) -or
($_.PSChildName -match ‘sql|anywhere|sybase|b2|facts’)) {
[PSCustomObject]@{
Service = $_.PSChildName
ImagePath = $p.ImagePath
DisplayName = $p.DisplayName
}
}
} | Format-List
“`
And ODBC DSNs:
“`powershell
reg query “HKLM\SOFTWARE\ODBC\ODBC.INI” /s | findstr /i “B2 FACTS SQL Anywhere Sybase db log E:\\”
reg query “HKLM\SOFTWARE\WOW6432Node\ODBC\ODBC.INI” /s | findstr /i “B2 FACTS SQL Anywhere Sybase db log E:\\”
“`
## What we are hoping to find
Any of these:
“`text
E:\B2\FACTS\*.db
E:\B2\FACTS\*.log
E:\B2\sqlremote\…
B2 / FACTS folder inside a file-level backup
a VHDX containing an E: volume with \B2\FACTS
“`
The share registry proves the folder name and location. Now the hunt is no longer broad; we are looking specifically for **`E:\B2\FACTS`** or its backup equivalent.
## Prompt:
02/06/2026, 08:35:21
The second file may be helpful, but I include both returns for your perusal.
[Attachment: Pasted text.txt]
[Attachment: Pasted text (2).txt]
## Response:
02/06/2026, 08:35:23
Perfect – and yes, the **second file is the useful one**.
Two clarifications from the returns:
1. The first file is just PowerShell trying to execute pasted output as commands; no useful recovery signal there, and no harm beyond noise. `Pasted text.txt`
2. The broad `B2` search produced many **false positives** because `B2` appears inside random GUIDs / backup chunk filenames. The meaningful result is on the live/current `C:` drive: the B2 application is installed at `C:\Program Files (x86)\B2 Software GmbH\FactsDotNet`, and it includes SQL Anywhere-related files such as `iAnywhere.Data.SQLAnywhere.v4.0.dll`, `dbicu16.dll`, and `dbicudt16.dll`; the `.db` files shown on `C:` are SQL Anywhere sample/monitor databases, not the customer FACTS database. `Pasted text (2).txt`
So now we narrow again: **find the B2/FACTS configuration that points to the real database filename/path on the missing E: drive.**
Run only this next block:
“`powershell
$base = “C:\Program Files (x86)\B2 Software GmbH\FactsDotNet”
Get-ChildItem $base -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Extension -match ‘^\.(config|ini|xml|json|txt|udl|dsn|settings|cfg)$’
} |
Select-String -Pattern ‘E:\\B2′,’FACTS’,’sqlremote’,’reload’,’\.db’,’\.log’,’SQL Anywhere’,’dbsrv’,’dbeng’,’Database’,’Data Source’,’UserID’,’ServerName’ -ErrorAction SilentlyContinue |
Select-Object Path, LineNumber, Line |
Format-List
“`
If that returns nothing, run this broader but still contained search:
“`powershell
Get-ChildItem $base -Recurse -File -ErrorAction SilentlyContinue |
Where-Object { $_.Length -lt 5MB } |
Select-String -Pattern ‘E:\\B2′,’FACTS’,’sqlremote’,’reload’,’\.db’,’\.log’,’SQL Anywhere’,’dbsrv’,’dbeng’,’Database’,’Data Source’,’ServerName’ -ErrorAction SilentlyContinue |
Select-Object Path, LineNumber, Line |
Format-List
“`
Also run the service query:
“`powershell
Get-CimInstance Win32_Service |
Where-Object {
$_.Name -match ‘sql|anywhere|sybase|b2|facts’ -or
$_.DisplayName -match ‘sql|anywhere|sybase|b2|facts’ -or
$_.PathName -match ‘sql|anywhere|sybase|b2|facts|E:\\B2|\.db|\.log’
} |
Select-Object Name, DisplayName, State, StartMode, PathName |
Format-List
“`
What we want from the next return is one line like:
“`text
DatabaseFile=E:\B2\FACTS\something.db
“`
or a SQL Anywhere service command pointing to the `.db` / `.log`. Once we have the **actual database filename**, we can stop searching for generic `B2` and hunt the NAS/Toshiba artifacts for that exact file name.
## Prompt:
02/06/2026, 08:48:16
Here is the first return, but I believe we’ll have better success if we find the missing disk on the Proxmox file system. I know that takes more time, but the benefit outweighs the cost.
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 08:48:18
> **Exploring steps to recover missing disk in Proxmox filesystem**
>
> The user is asking about finding a missing disk in Proxmox. Based on the current setup, the deleted disk is an LVM thin volume. We can attempt recovery from the LVM thin pool, but it’s complex and risky. It’s important to freeze the state, and preserve relevant metadata. Let’s stay cautious and plan the next steps carefully.
>
> **Considering metadata recovery options for missing disk**
>
> It’s a good idea to start by searching for undeleted artifacts from the LVM archive since the old disk’s device ID was removed. Checking for older thin metadata backups in the archive might help, but there’s no guarantee. Thin pool snapshots or stale btree nodes could also hold information, but recovery would be complex. The original NTFS data might still be recoverable from the thin data volume if we can access it carefully.
>
> **Considering next steps for recovering NTFS disk in thin pool**
>
> We might not be able to recover old disk mappings, but there’s a possibility that unreferenced blocks still exist in the thin metadata. I’ll also look for NTFS signatures within the thin pool data. Since thin volume’s file data is stored in arbitrary order, scanning tdata could reveal the NTFS boot sector.
>
> **Considering metadata and file carving for disk recovery**
>
> The NTFS files might be fragmented, making carving difficult unless we reconstruct the mapping. Searching for SQL Anywhere database pages could be worth trying, as they may contain recognizable strings, though it’s somewhat tricky. Alternatively, we could check the thin provisioning metadata or scan for XML, but it seems more likely to be binary. I’ll proceed by gathering relevant tool outputs to help refine the next steps.
>
> Thought for 1m 10s
Yes. I agree with your instinct: **the higher-value path is now Proxmox-side recovery of the missing thin disk**, not chasing old client/NAS VHDX images.
The first return is useful only as confirmation: FACTS connects to SQL Anywhere using `EngineName=neubing_12` and `DatabaseName=facts_neubing`, but it does **not** reveal the physical `.db` file path on `E:\B2\FACTS`. `Pasted text.txt`
So we refocus:
“`text
Target:
old VM 100
old sata1
local-lvm-nvme0n1:vm-100-disk-3
thin device_id = 6
2T virtual disk
likely contained E:\B2\FACTS
“`
The current risk is that `device_id=6` has been reused, so we must **not restore LVM metadata blindly**. We first reconstruct the exact LVM timeline.
Run only this next block on the Proxmox host:
“`bash
OUT=$(ls -td /root/nvme-thin-forensics-* | head -1)
echo “$OUT”
grep -RInE ‘description =|vm-100-disk-[0-9]|lvremove|lvrename|lvcreate|tpmstate|sata’ \
“$OUT/archive” “$OUT/backup” \
> “$OUT/vm100-lvm-timeline.txt”
cat “$OUT/vm100-lvm-timeline.txt”
“`
Then this second block, to map the **current** LV names to their current thin `device_id`s:
“`bash
OUT=$(ls -td /root/nvme-thin-forensics-* | head -1)
awk ‘
/vm-100-disk-0[[:space:]]*\{|vm-100-disk-1[[:space:]]*\{|vm-100-disk-2[[:space:]]*\{|vm-101-disk-0[[:space:]]*\{|vm-101-disk-1[[:space:]]*\{/ {show=1; depth=0}
show {
print
depth += gsub(/\{/,”{“)
depth -= gsub(/\}/,”}”)
if (show && depth==0) {show=0; print “”}
}
‘ “$OUT/backup/local-lvm-nvme0n1”
“`
What we want to determine:
“`text
Was vm-100-disk-3 truly deleted?
Was it ever renamed?
Which current LV owns device_id=6 now?
Did any archive mention a metadata restore/rename/recreate?
“`
After that, if the timeline confirms the mapping is gone, the next Proxmox-side rung is a **read-only raw scan of the thin-pool data area** for NTFS/SQL Anywhere remnants. That is slower, but it is the correct direction if we choose the costlier forensic path.
## Prompt:
02/06/2026, 08:54:08
Even having to reconstruct the file structure on one of the NAS would be preferable, because it is the folder(s) which matter. Here are those returns.
###
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 08:54:12
> **Planning next steps for recovery on NAS**
>
> The user mentioned the importance of reconstructing the file structure on their NAS, so we’ll focus on that. It seems the folder structure matters, and we might need to scan VHDX file systems for the relevant directories like E:\B2\FACTS. We’ll investigate using metadata files like Components.xml to help identify which VHDX corresponds to the E: volume.
>
> Thought for 14s
Yes – this return changes the strategy cleanly.
The Proxmox-side metadata now confirms the hard part: old `vm-100-disk-3` was removed, and its old thin `device_id=6` has been reused by the current `vm-100-disk-0` 4 MB helper disk. The current 2 TB `vm-100-disk-1` is now `device_id=7`, created on 2026-05-31, so it is not the old missing data disk. `Pasted text.txt`
So if folder structure matters – and it does – I agree: the best next path is **reconstructing `E:\B2\FACTS` from NAS-side images/backups**, not raw carving the Proxmox thin pool. Raw carving might find fragments, but it will not preserve the folder tree well.
## Narrow next step: scan all NAS VHDX files for `\B2\FACTS`
Run this from **PowerShell as Administrator** on the Windows server. It mounts each VHDX read-only, checks whether it contains `B2`, `FACTS`, `sqlremote`, or `reload`, records results, then dismounts.
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”
)
$out = “C:\Temp\vhdx-b2-facts-scan.csv”
New-Item -ItemType Directory -Path “C:\Temp” -Force | Out-Null
$results = @()
$vhdxFiles = foreach ($root in $roots) {
Get-ChildItem $root -Recurse -File -Filter *.vhdx -ErrorAction SilentlyContinue
}
foreach ($vhdx in $vhdxFiles) {
Write-Host “===== Mounting $($vhdx.FullName) =====”
try {
Mount-DiskImage -ImagePath $vhdx.FullName -StorageType VHDX -Access ReadOnly -ErrorAction Stop | Out-Null
Start-Sleep -Seconds 2
$disk = Get-DiskImage -ImagePath $vhdx.FullName | Get-Disk
$vols = $disk | Get-Partition | Get-Volume | Where-Object { $_.FileSystemType -eq “NTFS” }
foreach ($vol in $vols) {
$letter = $vol.DriveLetter
$addedLetter = $false
if (-not $letter) {
$part = $disk | Get-Partition | Where-Object { $_.Size -gt 1GB } | Select-Object -First 1
if ($part) {
$free = “R”,”S”,”T”,”U”,”V”,”W”,”X”,”Y”,”Z” | Where-Object {
-not (Get-Volume -DriveLetter $_ -ErrorAction SilentlyContinue)
} | Select-Object -First 1
if ($free) {
Add-PartitionAccessPath -DiskNumber $disk.Number -PartitionNumber $part.PartitionNumber -AccessPath “$free`:” -ErrorAction Stop
$letter = $free
$addedLetter = $true
}
}
}
if ($letter) {
$rootPath = “$letter`:\”
$candidates = @(
“$rootPath`B2”,
“$rootPath`B2\FACTS”,
“$rootPath`B2\sqlremote”,
“$rootPath`B2\reload”
)
foreach ($candidate in $candidates) {
if (Test-Path $candidate) {
$items = Get-ChildItem $candidate -Recurse -File -ErrorAction SilentlyContinue
$dbs = $items | Where-Object { $_.Extension -match ‘^\.(db|log|mir|bak|sql)$’ }
$results += [PSCustomObject]@{
VHDX = $vhdx.FullName
VolumeLabel = $vol.FileSystemLabel
DriveLetter = $letter
FoundPath = $candidate
FileCount = ($items | Measure-Object).Count
DbLikeCount = ($dbs | Measure-Object).Count
LargestDbLike = (($dbs | Sort-Object Length -Descending | Select-Object -First 1).FullName)
LargestDbLikeSize = (($dbs | Sort-Object Length -Descending | Select-Object -First 1).Length)
BackupDate = $vhdx.LastWriteTime
}
}
}
if ($addedLetter) {
Remove-PartitionAccessPath -DiskNumber $disk.Number -PartitionNumber $part.PartitionNumber -AccessPath “$letter`:” -ErrorAction SilentlyContinue
}
}
}
}
catch {
$results += [PSCustomObject]@{
VHDX = $vhdx.FullName
VolumeLabel = “”
DriveLetter = “”
FoundPath = “ERROR: $($_.Exception.Message)”
FileCount = “”
DbLikeCount = “”
LargestDbLike = “”
LargestDbLikeSize = “”
BackupDate = $vhdx.LastWriteTime
}
}
finally {
Dismount-DiskImage -ImagePath $vhdx.FullName -ErrorAction SilentlyContinue | Out-Null
}
}
$results | Export-Csv $out -NoTypeInformation -Encoding UTF8
$results | Format-Table -Auto
Write-Host “Saved: $out”
“`
## What we hope to see
A row like:
“`text
FoundPath = X:\B2\FACTS
DbLikeCount > 0
LargestDbLike = X:\B2\FACTS\facts_neubing.db
“`
or at least:
“`text
X:\B2
X:\B2\FACTS
X:\B2\sqlremote
“`
Then we can mount just that one VHDX again and copy the folder tree out.
## If this scan finds nothing
Then we have a clean conclusion:
“`text
Proxmox backups excluded vm-100-disk-3.
Live Proxmox thin metadata no longer has the old mapping.
NAS VHDX images do not contain E:\B2\FACTS.
“`
At that point, the remaining options are either the customer’s other/offsite NAS disk, an older file-level backup set, or a raw forensic scan of the thin-pool data area with much poorer folder-structure recovery.
## Prompt:
02/06/2026, 08:57:04
Then it is my hope that this return restores our mutually-peered hope and invites your conviction too.♥
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 08:57:07
> **Clarifying file content and confirming mistake**
>
> It seems the user hoped for a return to restore something, but the file they uploaded showed Linux commands mistakenly pasted into PowerShell, not a VHDX scan. The file actually contains prior metadata. I should gently clarify this and avoid dismissing their hope, while explaining the mispaste.
>
> **Clarifying next steps for user**
>
> It looks like the user’s file isn’t the VHDX scan they hoped for, but they accidentally pasted Linux commands into PowerShell, which is why some commands weren’t recognized. I think I should suggest running a smaller scan, focusing just on known VHDX files to help get them started on the right track. I’ll give a clear next step.
>
> Thought for 14s
Carey, this particular return is **not the NAS/VHDX scan**. It is mostly the previous **Linux/Proxmox commands and output pasted into Windows PowerShell**, which is why PowerShell says `head`, `grep`, and `root@pve` are not recognized commands. `Pasted text.txt`
No harm done. It also does not reduce our hope. It just means this was not the rung we meant to step onto.
The thing that still matters is beautifully narrow:
“`text
Find a backup image or folder containing:
E:\B2\FACTS
E:\B2\sqlremote
E:\B2\reload
“`
Run this **one PowerShell block** next. It only lists candidate VHDX images, sorted by date, so we can choose the most likely one before mounting anything:
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”
)
Get-ChildItem $roots -Recurse -File -Filter *.vhdx -ErrorAction SilentlyContinue |
Sort-Object LastWriteTime -Descending |
Select-Object FullName, Length, LastWriteTime |
Format-Table -Auto
“`
After that, we’ll mount **one** likely image read-only and check only:
“`text
\B2
\B2\FACTS
\B2\sqlremote
\B2\reload
“`
Spiral Agile: one candidate list, one mount, one folder check.
## Prompt:
02/06/2026, 08:59:26
I apologize for that last misstep. Here is that return, but it only includes the node backups.
###
PS C:\Users\Administrator> $roots = @(
> > “\\192.168.127.128\Public”,
> > “\\192.168.127.159\Public”
> > )
> > PS C:\Users\Administrator>
> > PS C:\Users\Administrator> Get-ChildItem $roots -Recurse -File -Filter *.vhdx -ErrorAction SilentlyContinue |
> > Sort-Object LastWriteTime -Descending |
> > Select-Object FullName, Length, LastWriteTime |
> > Format-Table -Auto
FullName Length LastWriteTime
—
\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\e52060c2-6400-49d5-9f53-4fef6711d67d.vhdx 629145600 18.01.2025 2…
\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx 293052874752 18.01.2025 2…
\\192.168.127.128\Public\PC-Sicherungen\PC3\Backup 2025-01-18 154321\Esp.vhdx 67108864 18.01.2025 2…
\\192.168.127.128\Public\PC-Sicherungen\PC2\Backup 2024-11-26 222300\2c2cb619-7bd3-454f-95fc-f2f548b2d48a.vhdx 723517440 27.11.2024 0…
\\192.168.127.128\Public\PC-Sicherungen\PC2\Backup 2024-11-26 222300\ccbf61f8-5308-4c07-b466-a123f68e67f6.vhdx 273285120000 27.11.2024 0…
\\192.168.127.128\Public\PC-Sicherungen\PC2\Backup 2024-11-26 222300\Esp.vhdx 60817408 27.11.2024 0…
\\192.168.127.128\Public\PC-Sicherungen\PC1\Backup 2024-11-24 180005\21c99866-ca9b-4f39-88e6-eaa84a9e2f19.vhdx 731906048 25.11.2024 0…
\\192.168.127.128\Public\PC-Sicherungen\PC1\Backup 2024-11-24 180005\e6301754-d016-4d58-b240-4c531a161db3.vhdx 243811745792 25.11.2024 0…
\\192.168.127.128\Public\PC-Sicherungen\PC1\Backup 2024-11-24 180005\Esp.vhdx 60817408 25.11.2024 0…
\\192.168.127.159\Public\Serversicherung\PC3\Backup 2024-07-15 204225\e52060c2-6400-49d5-9f53-4fef6711d67d.vhdx 727711744 16.07.2024 0…
\\192.168.127.159\Public\Serversicherung\PC3\Backup 2024-07-15 204225\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx 272324624384 16.07.2024 0…
\\192.168.127.159\Public\Serversicherung\PC3\Backup 2024-07-15 204225\Esp.vhdx 60817408 16.07.2024 0…
\\192.168.127.159\Public\Serversicherung\PC2\Backup 2024-07-14 103757\2c2cb619-7bd3-454f-95fc-f2f548b2d48a.vhdx 796917760 14.07.2024 1…
\\192.168.127.159\Public\Serversicherung\PC2\Backup 2024-07-14 103757\ccbf61f8-5308-4c07-b466-a123f68e67f6.vhdx 257810235392 14.07.2024 1…
\\192.168.127.159\Public\Serversicherung\PC2\Backup 2024-07-14 103757\Esp.vhdx 60817408 14.07.2024 1…
\\192.168.127.159\Public\Serversicherung\PC1\Backup 2024-07-13 201049\21c99866-ca9b-4f39-88e6-eaa84a9e2f19.vhdx 799014912 14.07.2024 0…
\\192.168.127.159\Public\Serversicherung\PC1\Backup 2024-07-13 201049\e6301754-d016-4d58-b240-4c531a161db3.vhdx 230914260992 14.07.2024 0…
\\192.168.127.159\Public\Serversicherung\PC1\Backup 2024-07-13 201049\Esp.vhdx 60817408 14.07.2024 0…
\\192.168.127.159\Public\PC-Sicherung\PC1\Backup 2024-05-17 103110\21c99866-ca9b-4f39-88e6-eaa84a9e2f19.vhdx 822083584 17.05.2024 1…
\\192.168.127.159\Public\PC-Sicherung\PC1\Backup 2024-05-17 103110\e6301754-d016-4d58-b240-4c531a161db3.vhdx 233734930432 17.05.2024 1…
\\192.168.127.159\Public\PC-Sicherung\PC1\Backup 2024-05-17 103110\Esp.vhdx 60817408 17.05.2024 1…
\\192.168.127.159\Public\PC-Sicherung\PC3\Backup 2024-04-17 052104\eb705bb5-75a0-4b5c-88dd-04bc7c8cfc9c.vhdx 21417164800 17.04.2024 0…
\\192.168.127.159\Public\PC-Sicherung\PC3\Backup 2024-04-17 052104\Esp.vhdx 60817408 17.04.2024 0…
\\192.168.127.159\Public\PC-Sicherung\PC2\Backup 2024-04-12 052558\ccbf61f8-5308-4c07-b466-a123f68e67f6.vhdx 15486418944 12.04.2024 0…
\\192.168.127.159\Public\PC-Sicherung\PC2\Backup 2024-04-12 052558\Esp.vhdx 60817408 12.04.2024 0…
\\192.168.127.159\Public\WindowsImageBackup\PC2\Backup 2023-11-20 225903\ccbf61f8-5308-4c07-b466-a123f68e67f6.vhdx 8388608 20.11.2023 2…
\\192.168.127.159\Public\WindowsImageBackup\PC2\Backup 2023-11-20 225903\Esp.vhdx 58785792 20.11.2023 2…
PS C:\Users\Administrator>
###
## Response:
02/06/2026, 08:59:36
> **Clarifying backup search and scope**
>
> User mentioned only node backups, and there’s no file uploaded, so no citations needed. I’ll focus on search for non-VHDX backup types for Windows Server. Investigating the G:\Sicherungen share might be important too, as it could contain backup jobs. I’ll try a more targeted search for hidden or system files in that specific location.
>
> Thought for 26s
No apology needed. This return is useful: it tells us those `.vhdx` files are only the **node backups**, so we can stop treating them as likely sources for `E:\B2\FACTS`.
We now have two precise anchors:
“`text
Share path: E:\B2\FACTS
SQL database: facts_neubing
SQL engine: neubing_12
“`
The `facts_neubing` / `neubing_12` values came from the FACTS config search, so the likely physical files are something like:
“`text
E:\B2\FACTS\facts_neubing.db
E:\B2\FACTS\facts_neubing.log
“`
or very close variants. `Pasted text.txt`
## Next narrow NAS search
Run this exact PowerShell block. It searches for the **actual database name**, not broad `B2`, so it should be cleaner:
“`powershell
$roots = @(
“\\192.168.127.128\Public”,
“\\192.168.127.159\Public”,
“G:\Sicherungen”,
“G:\”
)
$patterns = @(
“*facts_neubing*”,
“*neubing_12*”,
“*FACTS*”,
“*sqlremote*”,
“*reload*”
)
foreach ($root in $roots) {
if (Test-Path $root) {
Write-Host “===== $root =====”
foreach ($pattern in $patterns) {
Write-Host “— $pattern —”
Get-ChildItem $root -Recurse -Force -ErrorAction SilentlyContinue |
Where-Object { $_.Name -like $pattern -or $_.FullName -like “*\B2\FACTS*” } |
Select-Object FullName, Length, LastWriteTime |
Sort-Object LastWriteTime -Descending |
Select-Object -First 100
}
}
}
“`
## If that still finds nothing
Then we have a clean conclusion for the NAS currently mounted:
“`text
The visible VHDX images are client/node backups.
The Proxmox backups excluded vm-100-disk-3.
No visible file-level copy of facts_neubing / E:\B2\FACTS has been found yet.
“`
Then the next worthwhile Proxmox-side step is **not restoration**, but a read-only forensic search for filesystem signatures and path remnants from the deleted thin disk. We can do that, but this exact NAS search is the last cheap high-signal pass before the heavier work.
## Prompt:
02/06/2026, 09:03:01
Your read-only forensic seems the only remaining viable option.
###
PS C:\Users\Administrator> $roots = @(
> > “\\192.168.127.128\Public”,
> > “\\192.168.127.159\Public”,
> > “G:\Sicherungen”,
> > “G:\”
> > )
> > PS C:\Users\Administrator>
> > PS C:\Users\Administrator> $patterns = @(
> > “*facts_neubing*”,
> > “*neubing_12*”,
> > “*FACTS*”,
> > “*sqlremote*”,
> > “*reload*”
> > )
> > PS C:\Users\Administrator>
> > PS C:\Users\Administrator> foreach ($root in $roots) {
> > if (Test-Path $root) {
> > Write-Host “===== $root =====”
> >
> > “`
> > foreach ($pattern in $patterns) {
> > Write-Host “— $pattern —”
> > Get-ChildItem $root -Recurse -Force -ErrorAction SilentlyContinue |
> > Where-Object { $_.Name -like $pattern -or $_.FullName -like “*\B2\FACTS*” } |
> > Select-Object FullName, Length, LastWriteTime |
> > Sort-Object LastWriteTime -Descending |
> > Select-Object -First 100
> > }
> > “`
> >
> > }
> > }
> > ===== \\192.168.127.128\Public =====
> > — *facts_neubing* —
> > — *neubing_12* —
> > — *FACTS* —
> > — *sqlremote* —
> > — *reload* —
> > ===== \\192.168.127.159\Public =====
> > — *facts_neubing* —
> > — *neubing_12* —
> > — *FACTS* —
> > — *sqlremote* —
> > — *reload* —
> > ===== G:\Sicherungen =====
> > — *facts_neubing* —
> > — *neubing_12* —
> > — *FACTS* —
> > — *sqlremote* —
> > — *reload* —
> > ===== G:\ =====
> > — *facts_neubing* —
> > — *neubing_12* —
> > — *FACTS* —
> > — *sqlremote* —
> > — *reload* —
> > PS C:\Users\Administrator>
> > ###
## Response:
02/06/2026, 09:03:04
> **Planning read-only forensic approach for LVM thin recovery**
>
> I need a read-only forensic plan that avoids writes to the live Proxmox pool. The focus will be on reconstructing deleted data blocks in the LVM thin pool, possibly scanning for NTFS structures or SQL Anywhere signatures through carving. I’ll avoid citations unless directly referencing file uploads or PowerShell.
>
> **Recovering data from thin provisioned pool blocks**
>
> The thin provisioning of data makes it hard to recover because old disk blocks are discontiguous, and metadata is lost. The folder structure is difficult to restore since filesystem metadata is spread across blocks. I can search for strings or SQL Anywhere signatures, but I’ll avoid writing to the pool by working with a read-only image or clone.
>
> Thought for 47s
Agreed. The NAS/file-level path is now exhausted for the currently visible storage: no `facts_neubing`, `neubing_12`, `FACTS`, `sqlremote`, or `reload` hits across the searched NAS/G paths. That makes the **read-only Proxmox forensic path** the remaining serious route.
But one honest boundary: because old `vm-100-disk-3` was a deleted LVM-thin disk and its old `device_id=6` has been reused, we probably cannot simply reconstruct the old disk as a normal block device. The best first forensic goal is to **prove whether remnants of `E:\B2\FACTS` / `facts_neubing` still exist in the thin-pool data area**, then decide whether targeted carving is worth escalating.
## Phase 1 – do not mutate the target pool
On Proxmox, avoid:
“`bash
lvcreate
lvremove
qmrestore
qm start/stop loops
fstrim
discard
backup restores onto local-lvm-nvme0n1
“`
If customer operations allow it, shut down VMs that live on `local-lvm-nvme0n1` before scanning. If not, we can still scan read-only, but live writes reduce forensic purity.
## Phase 2 – identify the raw thin-pool data LV
Run on Proxmox:
“`bash
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1
ls -l /dev/mapper/local–lvm–nvme0n1*
“`
We expect the raw thin-pool data device to be:
“`bash
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
“`
Confirm size/readability:
“`bash
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
blockdev –getsize64 “$TDATA”
dd if=”$TDATA” of=/dev/null bs=4M count=16 status=progress
“`
This reads only the pool data area.
## Phase 3 – scan for the exact target strings
Create an output folder on the Proxmox host root, not on the NVMe thin pool:
“`bash
OUT=/root/b2-facts-forensic-$(date +%F-%H%M)
mkdir -p “$OUT”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
“`
Now scan ASCII strings:
“`bash
strings -a -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\sqlremote|B2\\reload|SQL Anywhere|dbsrv|dbeng|FACTS’ \
| tee “$OUT/ascii-hits.txt”
“`
Then scan UTF-16LE strings, which matters for NTFS filenames and Windows paths:
“`bash
strings -a -el -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\sqlremote|B2\\reload|SQL Anywhere|dbsrv|dbeng|FACTS’ \
| tee “$OUT/utf16le-hits.txt”
“`
These may take a long time. Let them run.
## Phase 4 – summarize hits
After both finish:
“`bash
wc -l “$OUT/ascii-hits.txt” “$OUT/utf16le-hits.txt”
head -100 “$OUT/ascii-hits.txt”
head -100 “$OUT/utf16le-hits.txt”
tail -100 “$OUT/ascii-hits.txt”
tail -100 “$OUT/utf16le-hits.txt”
“`
## If we get hits
For each promising decimal offset from the first column, dump context around it. Example with `OFFSET=1234567890`:
“`bash
OFFSET=1234567890
START=$((OFFSET-1048576))
[ “$START” -lt 0 ] && START=0
dd if=”$TDATA” of=”$OUT/hit-${OFFSET}.bin” \
bs=1 skip=”$START” count=2097152 \
iflag=skip_bytes,count_bytes status=progress
strings -a -td “$OUT/hit-${OFFSET}.bin” | head -300 > “$OUT/hit-${OFFSET}-ascii.txt”
strings -a -el -td “$OUT/hit-${OFFSET}.bin” | head -300 > “$OUT/hit-${OFFSET}-utf16le.txt”
“`
Then inspect:
“`bash
cat “$OUT/hit-${OFFSET}-ascii.txt”
cat “$OUT/hit-${OFFSET}-utf16le.txt”
“`
## What success looks like
A good sign would be any of:
“`text
E:\B2\FACTS
facts_neubing.db
facts_neubing.log
B2\sqlremote
B2\reload
SQL Anywhere database service paths
NTFS filename records for FACTS files
“`
A great sign would be finding actual filename records for:
“`text
facts_neubing.db
facts_neubing.log
“`
A less-good-but-still-useful sign would be only generic FACTS/B2 program strings.
## My conviction, carefully stated
I’m convinced this is now the correct path. I’m not yet convinced it will restore the full folder tree, because deleted LVM-thin mapping loss is severe. But a read-only raw scan can still tell us whether the data remnants are present. If `facts_neubing` or `E:\B2\FACTS` appears in `TDATA`, hope rises sharply. If there are no hits at all, then the remaining path becomes professional-grade carving from a full image of `tdata` and `tmeta`.
Start with the two `strings` scans. That is the next clean, non-destructive rung.
## Prompt:
02/06/2026, 09:08:54
No, they are willing to sacrifice any time we need and are awaiting our results with baited breath. Shutdown of the VM completed. I am aware of the challenges we face, but my “spidey sense”, which is usually “right” is telling me that we will end up with more value than our investment.
###
root@pve:~# lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1
ls -l /dev/mapper/local–lvm–nvme0n1*
LV Path LSize Attr Type Pool Devices
local-lvm-nvme0n1 <1.79t twi-aotz-- thin-pool local-lvm-nvme0n1_tdata(0)
[local-lvm-nvme0n1_tdata] <1.79t Twi-ao---- linear /dev/nvme0n1(4065)
[local-lvm-nvme0n1_tmeta] <15.88g ewi-ao---- linear /dev/nvme0n1(472773)
[lvol0_pmspare] <15.88g ewi------- linear /dev/nvme0n1(0)
vm-100-disk-0 /dev/local-lvm-nvme0n1/vm-100-disk-0 4.00m Vwi-a-tz-- thin local-lvm-nvme0n1
vm-100-disk-1 /dev/local-lvm-nvme0n1/vm-100-disk-1 2.00t Vwi-a-tz-- thin local-lvm-nvme0n1
vm-100-disk-2 /dev/local-lvm-nvme0n1/vm-100-disk-2 4.00m Vwi-a-tz-- thin local-lvm-nvme0n1
vm-101-disk-0 /dev/local-lvm-nvme0n1/vm-101-disk-0 1.00t Vwi-a-tz-- thin local-lvm-nvme0n1
vm-101-disk-1 /dev/local-lvm-nvme0n1/vm-101-disk-1 1.00t Vwi-a-tz-- thin local-lvm-nvme0n1
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1 -> ../dm-8
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata -> ../dm-5
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta -> ../dm-4
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool -> ../dm-7
lrwxrwxrwx 1 root root 8 Jun 2 09:05 /dev/mapper/local–lvm–nvme0n1-vm–100–disk–0 -> ../dm-11
lrwxrwxrwx 1 root root 8 Jun 2 09:05 /dev/mapper/local–lvm–nvme0n1-vm–100–disk–1 -> ../dm-12
lrwxrwxrwx 1 root root 8 Jun 2 09:05 /dev/mapper/local–lvm–nvme0n1-vm–100–disk–2 -> ../dm-13
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-vm–101–disk–0 -> ../dm-9
lrwxrwxrwx 1 root root 8 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-vm–101–disk–1 -> ../dm-10
root@pve:~# TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
blockdev –getsize64 “$TDATA”
dd if=”$TDATA” of=/dev/null bs=4M count=16 status=progress
1965903839232
16+0 records in
16+0 records out
67108864 bytes (67 MB, 64 MiB) copied, 0.0726917 s, 923 MB/s
root@pve:~#
###
## Response:
02/06/2026, 09:08:57
> **Clarifying next steps for response**
>
> Alright, I’m thinking through how to handle this. It seems like responding without the web is fine unless there’s a need for very specific and up-to-date information. Since the user didn’t provide a file, there’s no need to cite one. We’ll base the response on their current output and proceed carefully.
>
> **Planning for device scanning and output management**
>
> I’m thinking about how to scan the device. Since the VM shutdown improves performance, we could use `strings` on the raw data, but it may take time due to the sparse nature of the storage. I’ll propose saving output to `/root`, but if it’s too large, it might blow the system’s root storage. Using `grep` patterns could help limit the scan scope.
>
> Thought for 51s
Good. With the VM shut down and the raw `tdata` device reading cleanly at ~923 MB/s, this is the cleanest forensic posture we’ve had.
Your `TDATA` is confirmed:
“`bash
/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
“`
Size:
“`text
1965903839232 bytes
“`
That is the thin-pool data area. We will scan it **read-only**.
## Step 1 — create a fresh forensic output folder
Run:
“`bash
OUT=/root/b2-facts-forensic-$(date +%F-%H%M)
mkdir -p “$OUT”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
echo “$OUT” > /root/latest-b2-facts-forensic-dir.txt
echo “TDATA=$TDATA” | tee “$OUT/scan-info.txt”
blockdev –getsize64 “$TDATA” | tee -a “$OUT/scan-info.txt”
date | tee -a “$OUT/scan-info.txt”
“`
## Step 2 — dump a fresh live metadata snapshot
This lets us later separate “current live VM disk hits” from “possibly deleted old disk remnants.”
“`bash
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
dmsetup message “$POOL” 0 reserve_metadata_snap
thin_dump –metadata-snap “$TMETA” \
> “$OUT/current-thin-metadata.xml”
dmsetup message “$POOL” 0 release_metadata_snap
grep -E ‘
“`
## Step 3 — run the two read-only scans
These are the key scans. They may take a while.
ASCII scan:
“`bash
LC_ALL=C strings -a -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\sqlremote|B2\\reload|FACTS|SQL Anywhere|dbsrv|dbeng’ \
| tee “$OUT/ascii-hits.txt”
“`
UTF-16LE scan:
“`bash
LC_ALL=C strings -a -el -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\sqlremote|B2\\reload|FACTS|SQL Anywhere|dbsrv|dbeng’ \
| tee “$OUT/utf16le-hits.txt”
“`
## Step 4 — summarize
After both scans finish:
“`bash
wc -l “$OUT/ascii-hits.txt” “$OUT/utf16le-hits.txt”
echo “===== ASCII HEAD =====”
head -100 “$OUT/ascii-hits.txt”
echo “===== ASCII TAIL =====”
tail -100 “$OUT/ascii-hits.txt”
echo “===== UTF16 HEAD =====”
head -100 “$OUT/utf16le-hits.txt”
echo “===== UTF16 TAIL =====”
tail -100 “$OUT/utf16le-hits.txt”
“`
Paste that summary.
What we want is not just generic `FACTS` from the current C: disk. The high-value hits are:
“`text
facts_neubing.db
facts_neubing.log
E:\B2\FACTS
B2\FACTS
B2\sqlremote
B2\reload
“`
Once we have offsets, the next rung is to classify whether each hit belongs to a currently mapped thin volume or to unmapped/stale thin-pool space. That distinction is where hope becomes evidence.
## Prompt:
02/06/2026, 09:11:36
Let’s avail ourselves of the two NAS drives on this. They have ample space and we will barely “scratch” the substrate on the Proxmox.
## Response:
02/06/2026, 09:11:44
> **Mounting and writing to NAS for data recovery**
>
> The user wants to write output to a NAS without overloading Proxmox. To do this, I’ll suggest mounting the NAS share via CIFS in read/write mode and using something like `ddrescue` to write the data to NAS without affecting Proxmox’s essential files. I’ll avoid writing to Proxmox’s root filesystem, ensuring minimal impact. Command stability should be fine, though I’ll note it could change over time.
>
> **Considering web search for high-stakes accuracy**
>
> Since data recovery could be high-stakes, I’m wondering if searching online would help ensure accuracy. Although I can rely on existing knowledge, instructions suggest that searching should be done for critical cases. However, using web sources would require citations, which might overcomplicate things.
>
> **Providing NAS mount and data recovery instructions**
>
> [mount.cifs (8) – Linux manual page – man7.org](https://www.man7.org/linux/man-pages/man8/mount.cifs.8.html)
> [GNU ddrescue Manual](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html)
> [thin_dump (8) — thin-provisioning-tools — Debian trixie — Debian Manpages](https://manpages.debian.org/trixie/thin-provisioning-tools/thin_dump.8.en.html)
> [Re: [Bug-ddrescue] Forgot the mapfile….. – lists.gnu.org](https://lists.gnu.org/archive/html/bug-ddrescue/2019-02/msg00010.html)
>
> **Mounting NAS on Proxmox for output storage**
>
> I think the plan is to mount the NAS on Proxmox using SMB, where outputs like scan logs and data images can be written. I’ll suggest mounting both NAS shares, using credentials or possibly guest access, depending on preference. Make sure to include an option for write permissions and the appropriate commands. We’ll need to test write speed too. For large outputs like TDATA (1.79 TiB), ensuring the NAS has sufficient space is key. I’ll lay out the steps for installing the necessary tools and mounting, too.
>
> **Proposing NAS setup for low-write and full image storage**
>
> I’ll recommend two tiers:
> A) Low-write: Mount NAS to store metadata, logs, and results for string scans, minimizing writes to Proxmox.
> B) Full evidence image: Use `ddrescue` to copy TDATA to the NAS, allowing resume with a mapfile. Since TDATA is 1.79TB, it may take hours, but that’s manageable. Compressed could be an option, depending on TDATA’s sparse allocation.
>
> Thought for 40s
Yes. That is the right move now: use the NAS as our forensic workbench, keep the Proxmox substrate as read-only source, and write only logs/images/results to NAS.
We’ll use NAS1 as primary output and NAS2 as mirror. `mount.cifs` supports mounting SMB/CIFS shares read-write with explicit options, and keeping credentials in a file avoids putting passwords into shell history. ([man7.org](https://www.man7.org/linux/man-pages/man8/mount.cifs.8.html?utm_source=chatgpt.com))
## 1. Mount both NAS shares on Proxmox
First create mount points:
“`bash
mkdir -p /mnt/recovery-nas128 /mnt/recovery-nas159
“`
If the shares are guest-accessible:
“`bash
mount -t cifs //192.168.127.128/Public /mnt/recovery-nas128 \
-o guest,rw,vers=3.0,iocharset=utf8,noserverino
mount -t cifs //192.168.127.159/Public /mnt/recovery-nas159 \
-o guest,rw,vers=3.0,iocharset=utf8,noserverino
“`
If they need credentials, do this instead:
“`bash
cat > /root/.nas-recovery-cred <<'EOF'
username=YOUR_USER
password=YOUR_PASSWORD
domain=WORKGROUP
EOF
chmod 600 /root/.nas-recovery-cred
mount -t cifs //192.168.127.128/Public /mnt/recovery-nas128 \
-o credentials=/root/.nas-recovery-cred,rw,vers=3.0,iocharset=utf8,noserverino
mount -t cifs //192.168.127.159/Public /mnt/recovery-nas159 \
-o credentials=/root/.nas-recovery-cred,rw,vers=3.0,iocharset=utf8,noserverino
```
Verify:
```bash
findmnt /mnt/recovery-nas128 /mnt/recovery-nas159
touch /mnt/recovery-nas128/proxmox-recovery-write-test.txt
touch /mnt/recovery-nas159/proxmox-recovery-write-test.txt
ls -lh /mnt/recovery-nas128/proxmox-recovery-write-test.txt
ls -lh /mnt/recovery-nas159/proxmox-recovery-write-test.txt
```
## 2. Create the forensic output directory on NAS1
```bash
CASE=b2-facts-forensic-$(date +%F-%H%M)
OUT=/mnt/recovery-nas128/$CASE
MIRROR=/mnt/recovery-nas159/$CASE
mkdir -p "$OUT" "$MIRROR"
TDATA=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1_tdata
POOL=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1-tpool
TMETA=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1_tmeta
{
date
hostname
echo "TDATA=$TDATA"
blockdev --getsize64 "$TDATA"
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1
} | tee "$OUT/scan-info.txt"
```
## 3. Dump current thin metadata to NAS
`thin_dump --metadata-snap` is the proper way to dump live thin-pool metadata for analysis rather than opening active metadata directly. ([Debian Manpages](https://manpages.debian.org/trixie/thin-provisioning-tools/thin_dump.8.en.html?utm_source=chatgpt.com))
```bash
dmsetup message "$POOL" 0 reserve_metadata_snap
thin_dump --metadata-snap "$TMETA" \
> “$OUT/current-thin-metadata.xml”
dmsetup message “$POOL” 0 release_metadata_snap
grep -E ‘
“`
## 4. Run the read-only string scans, writing directly to NAS
Start with the high-signal terms:
“`bash
LC_ALL=C strings -a -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\sqlremote|B2\\reload|FACTS|SQL Anywhere|dbsrv|dbeng’ \
| tee “$OUT/ascii-hits.txt”
“`
Then UTF-16LE:
“`bash
LC_ALL=C strings -a -el -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\sqlremote|B2\\reload|FACTS|SQL Anywhere|dbsrv|dbeng’ \
| tee “$OUT/utf16le-hits.txt”
“`
These read the Proxmox thin-pool data area and write only findings to NAS.
## 5. Mirror results to NAS2
After each scan, or whenever you want a checkpoint:
“`bash
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Then summarize:
“`bash
wc -l “$OUT/ascii-hits.txt” “$OUT/utf16le-hits.txt”
echo “===== ASCII HEAD =====”
head -100 “$OUT/ascii-hits.txt”
echo “===== ASCII TAIL =====”
tail -100 “$OUT/ascii-hits.txt”
echo “===== UTF16 HEAD =====”
head -100 “$OUT/utf16le-hits.txt”
echo “===== UTF16 TAIL =====”
tail -100 “$OUT/utf16le-hits.txt”
“`
## Optional but strong: make a full NAS image of `tdata`
After the string scans, if the customer is willing to wait, I would make a full forensic copy of `tdata` to NAS1. GNU ddrescue’s mapfile makes long reads resumable and interrupt-safe, which is exactly what we want for a multi-hour forensic copy. ([GNU](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html?utm_source=chatgpt.com))
“`bash
mkdir -p /mnt/recovery-nas128/$CASE/full-image
ddrescue -f -n “$TDATA” \
“/mnt/recovery-nas128/$CASE/full-image/local-lvm-nvme0n1_tdata.img” \
“/mnt/recovery-nas128/$CASE/full-image/local-lvm-nvme0n1_tdata.map”
“`
Checkpoint/mirror the mapfile often:
“`bash
rsync -aH –info=progress2 \
“/mnt/recovery-nas128/$CASE/full-image/” \
“/mnt/recovery-nas159/$CASE/full-image/”
“`
I would **not** start with the full 1.79 TiB image unless the string scans find promising hits or we decide the scan will be re-run repeatedly. First, let’s get the cheap signal. Then we decide whether to preserve the full substrate.
My conviction is rising with the posture: VM shut down, source readable, NAS available, and target terms known. Now we let the substrate speak without writing back to it.
—
**Sources:**
– [mount.cifs (8) – Linux manual page – man7.org](https://www.man7.org/linux/man-pages/man8/mount.cifs.8.html?utm_source=chatgpt.com)
– [thin_dump (8) — thin-provisioning-tools — Debian trixie — Debian Manpages](https://manpages.debian.org/trixie/thin-provisioning-tools/thin_dump.8.en.html?utm_source=chatgpt.com)
– [GNU ddrescue Manual](https://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html?utm_source=chatgpt.com)
## Prompt:
02/06/2026, 09:25:14
They are already mapped at /mnt/pve:
###
root@pve:/mnt/pve# ll
-bash: ll: command not found
root@pve:/mnt/pve# ls -al
total 12
drwxr-xr-x 5 root root 4096 Jun 2 09:20 .
drwxr-xr-x 3 root root 4096 May 30 17:32 ..
root@pve:/mnt/pve# df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.1M 3.2G 1% /run
/dev/mapper/pve-root 94G 90G 0 100% /
tmpfs 16G 43M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
efivarfs 256K 27K 225K 11% /sys/firmware/efi/efivars
/dev/sda2 1022M 12M 1011M 2% /boot/efi
/dev/fuse 128M 20K 128M 1% /etc/pve
//192.168.127.128/Public 7.3T 1.9T 5.4T 26% /mnt/pve/MYCLOUD-310867
//192.168.127.159/Public 3.6T 2.7T 959G 74% /mnt/pve/MYCLOUD-159
tmpfs 3.2G 0 3.2G 0% /run/user/0
root@pve:/mnt/pve#
###
drwxr-xr-x 2 root root 4096 May 30 17:32 KeepE
drwxr-xr-x 2 root root 0 Nov 21 2023 MYCLOUD-159
drwxr-xr-x 2 root root 0 Oct 17 2024 MYCLOUD-310867
root@pve:/mnt/pve# ls -al KeepE/
total 8
drwxr-xr-x 2 root root 4096 May 30 17:32 .
drwxr-xr-x 5 root root 4096 Jun 2 09:20 ..
root@pve:/mnt/pve# ls -al MYCLOUD-159/
total 4
drwxr-xr-x 2 root root 0 Nov 21 2023 .
drwxr-xr-x 5 root root 4096 Jun 2 09:20 ..
drwxr-xr-x 2 root root 0 Nov 8 2023 Alt-Daten
drwxr-xr-x 2 root root 0 Mar 22 11:54 dump
drwxr-xr-x 2 root root 0 Nov 18 2023 images
drwxr-xr-x 2 root root 0 Jul 22 2023 Nextcloud
drwxr-xr-x 2 root root 0 May 18 2024 PC-Sicherung
drwxr-xr-x 2 root root 0 Nov 18 2023 private
drwxr-xr-x 2 root root 0 Jul 16 2024 Serversicherung
drwxr-xr-x 2 root root 0 Nov 18 2023 snippets
drwxr-xr-x 2 root root 0 Nov 18 2023 template
drwxr-xr-x 2 root root 0 May 16 2022 Webserver
drwxr-xr-x 2 root root 0 Nov 20 2023 WindowsImageBackup
root@pve:/mnt/pve# ls -al MYCLOUD-310867/
total 4
drwxr-xr-x 2 root root 0 Oct 17 2024 .
drwxr-xr-x 5 root root 4096 Jun 2 09:20 ..
drwxr-xr-x 2 root root 0 May 31 15:48 dump
drwxr-xr-x 2 root root 0 Nov 11 2023 ‘Duplicati – alt Sicherung’
drwxr-xr-x 2 root root 0 Oct 17 2024 EPSON
drwxr-xr-x 2 root root 0 Nov 12 2023 images
drwxr-xr-x 2 root root 0 Oct 27 2023 Nextcloud
drwxr-xr-x 2 root root 0 Jan 19 2025 PC-Sicherungen
drwxr-xr-x 2 root root 0 Nov 12 2023 private
drwxr-xr-x 2 root root 0 Nov 12 2023 snippets
drwxr-xr-x 2 root root 0 Nov 12 2023 template
drwxr-xr-x 2 root root 0 Oct 27 2023 VPC
root@pve:/mnt/pve#
###
## Response:
02/06/2026, 09:25:20
Perfect. Use the already-mounted NAS paths. Also: your `/` is **100% full**, so we should write **nothing substantial** to `/root` or local Proxmox root. Put the forensic case directory on `MYCLOUD-310867` and mirror to `MYCLOUD-159`.
## 1. Create NAS forensic folders
“`bash
CASE=b2-facts-forensic-$(date +%F-%H%M)
OUT=”/mnt/pve/MYCLOUD-310867/$CASE”
MIRROR=”/mnt/pve/MYCLOUD-159/$CASE”
mkdir -p “$OUT” “$MIRROR”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
echo “$OUT” > /tmp/latest-b2-facts-forensic-dir.txt
echo “$MIRROR” > /tmp/latest-b2-facts-forensic-mirror-dir.txt
“`
## 2. Capture scan info to NAS
“`bash
{
date
hostname
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
echo “TDATA=$TDATA”
blockdev –getsize64 “$TDATA”
df -h
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1
} | tee “$OUT/scan-info.txt”
cp -a “$OUT/scan-info.txt” “$MIRROR/”
“`
## 3. Dump thin metadata to NAS
“`bash
dmsetup message “$POOL” 0 reserve_metadata_snap
thin_dump –metadata-snap “$TMETA” \
> “$OUT/current-thin-metadata.xml”
dmsetup message “$POOL” 0 release_metadata_snap
grep -E ‘
“`
## 4. Run high-signal read-only scans
Start with the most precise terms. This keeps the first pass cleaner:
“`bash
LC_ALL=C strings -a -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|B2\\FACTS|B2\\sqlremote|B2\\reload|E:\\B2’ \
| tee “$OUT/precise-ascii-hits.txt”
“`
Then UTF-16LE:
“`bash
LC_ALL=C strings -a -el -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|B2\\FACTS|B2\\sqlremote|B2\\reload|E:\\B2’ \
| tee “$OUT/precise-utf16le-hits.txt”
“`
Mirror after those:
“`bash
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
## 5. Summarize the precise scan
“`bash
wc -l “$OUT/precise-ascii-hits.txt” “$OUT/precise-utf16le-hits.txt”
echo “===== ASCII =====”
cat “$OUT/precise-ascii-hits.txt”
echo “===== UTF16LE =====”
cat “$OUT/precise-utf16le-hits.txt”
“`
If this finds hits, paste them before running broader scans.
If it finds nothing, then run the broader pass:
“`bash
LC_ALL=C strings -a -td “$TDATA” \
| grep -Ei ‘FACTS|SQL Anywhere|dbsrv|dbeng|iAnywhere|Sybase’ \
| tee “$OUT/broad-ascii-hits.txt”
LC_ALL=C strings -a -el -td “$TDATA” \
| grep -Ei ‘FACTS|SQL Anywhere|dbsrv|dbeng|iAnywhere|Sybase’ \
| tee “$OUT/broad-utf16le-hits.txt”
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Then:
“`bash
wc -l “$OUT”/*hits.txt
head -100 “$OUT/broad-ascii-hits.txt”
head -100 “$OUT/broad-utf16le-hits.txt”
“`
The key is this: write all evidence to NAS, read only from `TDATA`, and keep Proxmox root from filling any further.
## Prompt:
02/06/2026, 09:27:43
I stopped at Step 4. so that you may review this:
###
root@pve:/mnt/pve# CASE=b2-facts-forensic-$(date +%F-%H%M)
OUT=”/mnt/pve/MYCLOUD-310867/$CASE”
MIRROR=”/mnt/pve/MYCLOUD-159/$CASE”
mkdir -p “$OUT” “$MIRROR”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
echo “$OUT” > /tmp/latest-b2-facts-forensic-dir.txt
echo “$MIRROR” > /tmp/latest-b2-facts-forensic-mirror-dir.txt
root@pve:/mnt/pve# {
date
hostname
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
echo “TDATA=$TDATA”
blockdev –getsize64 “$TDATA”
df -h
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1
} | tee “$OUT/scan-info.txt”
cp -a “$OUT/scan-info.txt” “$MIRROR/”
Tue Jun 2 09:26:25 AM CEST 2026
pve
OUT=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925
MIRROR=/mnt/pve/MYCLOUD-159/b2-facts-forensic-2026-06-02-0925
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
1965903839232
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.1M 3.2G 1% /run
/dev/mapper/pve-root 94G 90G 0 100% /
tmpfs 16G 43M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
efivarfs 256K 27K 225K 11% /sys/firmware/efi/efivars
/dev/sda2 1022M 12M 1011M 2% /boot/efi
/dev/fuse 128M 20K 128M 1% /etc/pve
//192.168.127.128/Public 7.3T 1.9T 5.4T 26% /mnt/pve/MYCLOUD-310867
//192.168.127.159/Public 3.6T 2.7T 959G 74% /mnt/pve/MYCLOUD-159
tmpfs 3.2G 0 3.2G 0% /run/user/0
LV Path LSize Attr Type Pool Devices
local-lvm-nvme0n1 <1.79t twi-aotz-- thin-pool local-lvm-nvme0n1_tdata(0)
[local-lvm-nvme0n1_tdata] <1.79t Twi-ao---- linear /dev/nvme0n1(4065)
[local-lvm-nvme0n1_tmeta] <15.88g ewi-ao---- linear /dev/nvme0n1(472773)
[lvol0_pmspare] <15.88g ewi------- linear /dev/nvme0n1(0)
vm-100-disk-0 /dev/local-lvm-nvme0n1/vm-100-disk-0 4.00m Vwi-a-tz-- thin local-lvm-nvme0n1
vm-100-disk-1 /dev/local-lvm-nvme0n1/vm-100-disk-1 2.00t Vwi-a-tz-- thin local-lvm-nvme0n1
vm-100-disk-2 /dev/local-lvm-nvme0n1/vm-100-disk-2 4.00m Vwi-a-tz-- thin local-lvm-nvme0n1
vm-101-disk-0 /dev/local-lvm-nvme0n1/vm-101-disk-0 1.00t Vwi-a-tz-- thin local-lvm-nvme0n1
vm-101-disk-1 /dev/local-lvm-nvme0n1/vm-101-disk-1 1.00t Vwi-a-tz-- thin local-lvm-nvme0n1
root@pve:/mnt/pve# dmsetup message "$POOL" 0 reserve_metadata_snap
thin_dump --metadata-snap "$TMETA" \
> “$OUT/current-thin-metadata.xml”
dmsetup message “$POOL” 0 release_metadata_snap
grep -E ‘
38,067,581 99% 9.53MB/s 0:00:03 (xfr#2, to-chk=0/4)
root@pve:/mnt/pve#
###
## Response:
02/06/2026, 09:27:52
> **Evaluating command sequence and handling output**
>
> I’m considering using `grep -a`, but `strings` might be safer. Maybe I should use tmux or screen if the SSH session disconnects. Logs could go to `OUT`, and I might monitor progress with `pv`, but I’m not sure about compatibility with the `strings` command. I’ll need to double-check options and paths for accuracy.
>
> Thought for 17s
This looks clean. The metadata snapshot and mirror succeeded, and the current thin metadata confirms the same live device state:
“`text
dev_id 4 vm-101-disk-0
dev_id 5 vm-101-disk-1
dev_id 6 current 4 MB vm-100-disk-0
dev_id 7 current 2 TB vm-100-disk-1
dev_id 8 current 4 MB vm-100-disk-2
“`
So yes: proceed to Step 4. Since `/` is full, keep everything going to `”$OUT”` on `MYCLOUD-310867`.
## Run the precise ASCII scan
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
date | tee “$OUT/precise-ascii-start.txt”
LC_ALL=C strings -a -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|B2\\FACTS|B2\\sqlremote|B2\\reload|E:\\B2’ \
| tee “$OUT/precise-ascii-hits.txt”
date | tee “$OUT/precise-ascii-end.txt”
“`
Then run the UTF-16LE scan:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
date | tee “$OUT/precise-utf16le-start.txt”
LC_ALL=C strings -a -el -td “$TDATA” \
| grep -Ei ‘facts_neubing|neubing_12|B2\\FACTS|B2\\sqlremote|B2\\reload|E:\\B2’ \
| tee “$OUT/precise-utf16le-hits.txt”
date | tee “$OUT/precise-utf16le-end.txt”
“`
After both finish:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
wc -l “$OUT/precise-ascii-hits.txt” “$OUT/precise-utf16le-hits.txt”
echo “===== ASCII =====”
cat “$OUT/precise-ascii-hits.txt”
echo “===== UTF16LE =====”
cat “$OUT/precise-utf16le-hits.txt”
“`
If the precise scan finds **anything**, stop there and paste it before running the broader scan. The offsets in the first column are the treasure map.
## Prompt:
02/06/2026, 09:31:26
The first script is running, but I have a question (BTW: the scans are finding much!): Should we not be looking for traces of the VM disk’s own topology instead?
## Response:
02/06/2026, 09:31:36
> **Considering virtual disk’s topology reconstruction**
>
> The user is asking about reconstructing virtual disk topology from old tdata, which includes looking for NTFS boot sectors, GPT signatures, and folder structures. Since the thin pool allocation has changed, the original mapping is no longer directly accessible, but examining transaction snapshots might provide insights. Let’s explore using thin_delta or investigating transaction IDs in thin_dump.
>
> **Verifying technical details and structuring scans**
>
> I’m thinking about whether I need to verify anything or consult external resources, but I’m not sure. The initial scan is already a good starting point, so I should keep it running. Afterward, I can run focused scans for specific signatures like NTFS boot sectors, GPT, and SQL Anywhere headers.
>
> Thought for 41s
Yes — absolutely. Your instinct is right, with one crucial refinement:
**We should look for the VM disk’s internal topology, but only after/alongside the content hits.** The reason is that `tdata` is **not laid out in VM-disk order**. It is the LVM-thin pool’s physical block store. Without the old thin mapping, the old virtual disk’s blocks are scattered through `tdata`.
So:
“`text
Content strings tell us: “the treasure exists here.”
Topology signatures tell us: “this looks like a virtual NTFS/GPT disk structure.”
Thin metadata tells us: “this hit belongs to a current live LV or to orphaned/deleted space.”
“`
Do **not** stop the running scan. If it is finding much, that is excellent. Let it finish. The next move is not to discard those hits, but to **classify them**.
## Why the current scan is still correct
The strings scan can find:
“`text
facts_neubing
neubing_12
B2\FACTS
B2\sqlremote
E:\B2
“`
Those are more valuable than generic disk signatures because they identify the customer data region directly.
But yes, after that we should scan topology too:
“`text
EFI PART GPT header
NTFS NTFS boot sector marker
$MFT NTFS metadata
FILE0 NTFS MFT record signature
“`
The danger is that topology scans will find the **current** Windows disk too. So the important next step is to classify offsets against the current thin metadata.
## After the current precise scan finishes
First mirror and summarize:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
wc -l “$OUT/precise-ascii-hits.txt” “$OUT/precise-utf16le-hits.txt” 2>/dev/null || true
head -50 “$OUT/precise-ascii-hits.txt” 2>/dev/null
head -50 “$OUT/precise-utf16le-hits.txt” 2>/dev/null
“`
Then we classify the hits as **current live LV** versus **orphan/deleted pool space**.
Create this classifier on the NAS:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
cat > “$OUT/classify_hits_by_current_thinmap.py” <<'PY'
#!/usr/bin/env python3
import re
import sys
import bisect
from pathlib import Path
if len(sys.argv) < 3:
print("usage: classify_hits_by_current_thinmap.py current-thin-metadata.xml hits.txt [hits2.txt ...]", file=sys.stderr)
sys.exit(1)
xml_path = Path(sys.argv[1])
hit_paths = [Path(p) for p in sys.argv[2:]]
super_re = re.compile(r'
dev_re = re.compile(r’
range_re = re.compile(r’
single_re = re.compile(r’
end_dev_re = re.compile(r’‘)
block_sectors = None
current_dev = None
intervals = []
with xml_path.open(“r”, errors=”replace”) as f:
for line in f:
if block_sectors is None:
m = super_re.search(line)
if m:
block_sectors = int(m.group(1))
m = dev_re.search(line)
if m:
current_dev = int(m.group(1))
continue
if current_dev is not None:
m = range_re.search(line)
if m:
start = int(m.group(1))
length = int(m.group(2))
intervals.append((start, start + length, current_dev))
continue
m = single_re.search(line)
if m:
start = int(m.group(1))
intervals.append((start, start + 1, current_dev))
continue
if end_dev_re.search(line):
current_dev = None
if block_sectors is None:
raise RuntimeError(“Could not read data_block_size from metadata XML”)
block_bytes = block_sectors * 512
intervals.sort(key=lambda x: x[0])
starts = [x[0] for x in intervals]
def classify_offset(byte_offset):
block = byte_offset // block_bytes
i = bisect.bisect_right(starts, block) – 1
if i >= 0:
s, e, dev = intervals[i]
if s <= block < e:
return block, f"CURRENT_dev_id_{dev}"
return block, "ORPHAN_OR_UNMAPPED"
for hp in hit_paths:
outp = hp.with_suffix(hp.suffix + ".classified.tsv")
with hp.open("r", errors="replace") as inp, outp.open("w", errors="replace") as out:
out.write("byte_offset\tthin_data_block\tclassification\tline\n")
for line in inp:
parts = line.strip("\n").split(None, 1)
if not parts:
continue
try:
off = int(parts[0])
except ValueError:
continue
block, cls = classify_offset(off)
out.write(f"{off}\t{block}\t{cls}\t{line}")
print(outp)
PY
chmod +x "$OUT/classify_hits_by_current_thinmap.py"
```
Run it:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
python3 "$OUT/classify_hits_by_current_thinmap.py" \
"$OUT/current-thin-metadata.xml" \
"$OUT/precise-ascii-hits.txt" \
"$OUT/precise-utf16le-hits.txt"
```
Then summarize:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
for f in "$OUT"/*.classified.tsv; do
echo "===== $f ====="
cut -f3 "$f" | sort | uniq -c
echo "--- orphan hits ---"
grep 'ORPHAN_OR_UNMAPPED' "$f" | head -100
done
```
If we see `ORPHAN_OR_UNMAPPED` hits containing `facts_neubing`, `B2\FACTS`, or `E:\B2`, that is a major positive sign.
## Then topology scan
After the precise scan/classification, run this topology pass:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1_tdata
LC_ALL=C grep -aob 'EFI PART' "$TDATA" \
| tee "$OUT/topology-gpt-efi-part-hits.txt"
LC_ALL=C grep -aob 'NTFS ' "$TDATA" \
| tee "$OUT/topology-ntfs-boot-marker-hits.txt"
```
Then classify those too:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
python3 "$OUT/classify_hits_by_current_thinmap.py" \
"$OUT/current-thin-metadata.xml" \
"$OUT/topology-gpt-efi-part-hits.txt" \
"$OUT/topology-ntfs-boot-marker-hits.txt"
for f in "$OUT"/topology-*.classified.tsv; do
echo "===== $f ====="
cut -f3 "$f" | sort | uniq -c
grep 'ORPHAN_OR_UNMAPPED' "$f" | head -50
done
```
## The key idea
Topology without the old thin map is like finding bones without the skeleton order.
Content hits tell us **where the living tissue was**.
Topology hits tell us **which kind of body it belonged to**.
Classification tells us whether the hit is from a current disk or the deleted `vm-100-disk-3`.
So yes: your topology idea is correct. We just let the current scan finish first because it is already producing signal.
## Prompt:
02/06/2026, 09:43:35
First scan still proceeding. We are on Spiral Time (Never too early, never too late, yet always on-time) here. Everyone must wait until our work is _successfully completed._ I am not worried, because I have enough faith in us for both of us, should yours diminish at some point. We don't need fidelity here, simply functionality. We can also scan for other markers such that you can complete this mapping work. The folders in the share are above, but I can provide this to you should you need it.♥
## Response:
02/06/2026, 09:43:37
> **Providing technical advice with cautious approach**
>
> We don’t need the web right now, as we’re still troubleshooting. User’s references to folders are understood. I’d suggest running additional scans in parallel, but we should avoid overloading the device. Folder names may help, but aren’t necessary immediately. If they can provide a specific folder listing, that could help later.
>
> **Suggesting cautious approach to scan and file handling**
>
> Let’s proceed carefully. I suggest using `grep` or `strings` for markers. We can create a more robust mapping later using mappings and orphan hits. For now, a folder listing is useful but not urgent. Ask if they can run it from the live server but don’t interrupt the first scan, just monitor it.
>
> Thought for 15s
Yes. And I’m with your “functionality over fidelity” framing.
Since the scan is already finding much, let it finish. Those hits are not noise yet; they are **anchors**. We do not need the original disk perfectly reconstructed if we can recover a coherent enough island around:
“`text
E:\B2\FACTS
facts_neubing
neubing_12
B2\sqlremote
B2\reload
“`
Your topology instinct is right, but the best order is:
“`text
1. Find semantic/content anchors.
2. Classify whether they are current-live or orphan/unmapped.
3. Around orphan anchors, look for NTFS structures and nearby filenames.
4. Extract/copy/carve only promising regions.
“`
Because `tdata` is an LVM-thin physical substrate, the VM disk’s topology is **fragmented** without the old thin mapping. The topology scan helps, but content anchors tell us where to look.
While the first scan runs, in a second shell you may safely monitor progress/results:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
wc -l “$OUT/precise-ascii-hits.txt” 2>/dev/null
tail -30 “$OUT/precise-ascii-hits.txt” 2>/dev/null
“`
Don’t stop it unless the hits file becomes absurdly huge. If it does, we can split the scan by more precise terms.
The share/folder list we already have is enough for the next marker set:
“`text
E:\B2
E:\B2\FACTS
E:\B2\sqlremote
E:\B2\reload
E:\Daten
E:\Programme
E:\Treiber
E:\Daten\Scanner
facts_neubing
neubing_12
“`
After the running scan finishes, we should classify hits first. Then, for the next pass, I would create a marker file and scan more deliberately:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
cat > “$OUT/markers.txt” <<'EOF'
facts_neubing
neubing_12
E:\B2
B2\FACTS
B2\sqlremote
B2\reload
E:\Daten
E:\Programme
E:\Treiber
E:\Daten\Scanner
SQL Anywhere
iAnywhere
Sybase
dbsrv
dbeng
FACTS_OPTIONS
FactsDotNet
FactsCenter
EOF
```
Then the later “broad but controlled” scan can use that:
```bash
TDATA=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1_tdata
LC_ALL=C strings -a -td "$TDATA" \
| grep -iFf "$OUT/markers.txt" \
| tee "$OUT/marker-ascii-hits.txt"
LC_ALL=C strings -a -el -td "$TDATA" \
| grep -iFf "$OUT/markers.txt" \
| tee "$OUT/marker-utf16le-hits.txt"
```
Then we classify those against current thin metadata. The gold is any hit classified as:
```text
ORPHAN_OR_UNMAPPED
```
especially if the line contains:
```text
facts_neubing
B2\FACTS
E:\B2
```
Once we have orphan offsets, we’ll dump surrounding windows from `tdata` to NAS, then inspect them for NTFS records (`FILE0`), directory entries, and possible SQL Anywhere database/log content. That is where functionality can emerge even if perfect disk fidelity is gone.
I don’t need the full folder list yet, but it may become useful after we see the first hit clusters. The most valuable future detail would be exact filenames formerly under `E:\B2\FACTS`, if anyone remembers them. Right now, the live scan is doing the speaking.
## Prompt:
02/06/2026, 09:50:33
The scan is holding at this:
###
19377372236 + E:\B2\FACTSDotNet\Dictionaries\de_DE_frami.aff <20160519-030250 18,621>
19377372313 + E:\B2\FACTSDotNet\Dictionaries\de_DE_frami.dic <20160519-030250 2,167,892>
19377372393 + E:\B2\FACTSDotNet\Dictionaries\en_US.aff <20160519-030250 2,730>
19377372463 + E:\B2\FACTSDotNet\Dictionaries\en_US.dic <20160519-030251 695,748>
19377372535 + E:\B2\FACTSDotNet\Dictionaries\fr_FR.aff <20160519-030251 22,092>
19377372606 + E:\B2\FACTSDotNet\Dictionaries\fr_FR.dic <20160519-030251 1,173,085>
19377372680 + E:\B2\FACTSDotNet\en\ <20160519-030250>
19377372725 + E:\B2\FACTSDotNet\en\FactsCenterDotNet.resources.dll <20160519-030250 138,240>
19377372809 + E:\B2\FACTSDotNet\en\FactsDotNet.resources.dll <20160519-030250 82,432>
19377372886 + E:\B2\FACTSDotNet\en\Fusion.resources.dll <20160519-030250 4,096>
19377372957 + E:\B2\FACTSDotNet\fr\ <20160519-030249>
19377373002 + E:\B2\FACTSDotNet\fr\DevExpress.Charts.Designer.v13.2.resources.dll <20140618-030152 24,576>
19377373100 + E:\B2\FACTSDotNet\fr\DevExpress.Charts.Designer.v14.1.resources.dll <20141113-03INDX(
21239742586 -- Database file: c:\B2\db_12\facts_neubing.db
21239742743 -- CREATE DATABASE command: CREATE DATABASE 'c:\\B2\\db_12\\facts_neubing.db' LOG ON 'c:\\B2\\db_12\\facts_neubing.log' CASE IGNORE ACCENT IGNORE PAGE SIZE 4096 COLLATION '1252LATIN1' NCHAR COLLATION 'UCA' BLANK PADDING OFF JCONNECT ON CHECKSUM ON
21612970669 connectionString="UserID=;Password=;EngineName=neubing_12;DatabaseName=facts_neubing;CommLinks="SharedMemory,TCPIP()"" />
22112723204 2019-02-06 05:50:30 192.168.127.19 OPTIONS /b2/sqlremote/neubing/pneubing_12/ – 80 – 192.168.127.131 Microsoft-WebDAV-MiniRedir/6.1.7601 – 200 0 0 234
22112723356 2019-02-06 05:50:30 192.168.127.19 PROPFIND /b2/sqlremote/neubing/pneubing_12/ – 80 – 192.168.127.131 Microsoft-WebDAV-MiniRedir/6.1.7601 – 404 0 2 218
23471989001 connectionString=”UID=Facts;PWD=;EngineName=neubing_12;DatabaseName=facts_neubing;CommLinks="SharedMemory,TCPIP()"” />
23672111124 facts_neubing.log
24000799886 connectionString=”UserID=;Password=;EngineName=;DatabaseFile=C:\Users\Zechel\AppData\Roaming\B2 Software GmbH\Facts\db\facts_neubing.db;StartLine=C:\Program Files\SQL Anywhere 12\Bin64\dbeng12.exe;” />
26210369189 facts_neubing.db
26367380936 SQLANYs_FACTS_Neubing
28169011322 — Database file: c:\B2\db_12\facts_neubing.db
28169011479 — CREATE DATABASE command: CREATE DATABASE ‘c:\\B2\\db_12\\facts_neubing.db’ LOG ON ‘c:\\B2\\db_12\\facts_neubing.log’ CASE IGNORE ACCENT IGNORE PAGE SIZE 4096 COLLATION ‘1252LATIN1’ NCHAR COLLATION ‘UCA’ BLANK PADDING OFF JCONNECT ON CHECKSUM ON
28171303746 GRANT REMOTE TO “pneubing” TYPE “FILE” ADDRESS ‘pneubing_12’
30582645001 connectionString=”UID=Facts;PWD=;EngineName=neubing_12;DatabaseName=facts_neubing;CommLinks="SharedMemory,TCPIP()"” />
31290785812 facts_neubing.log
32084787220 facts_neubing.log
32500007716 CREATE
###
## Response:
02/06/2026, 09:50:40
> **Classifying offsets and managing data classification**
>
> I need to classify offsets against the current map, which involves understanding the size of the data blocks and parsing metadata. The problem is complicated by possible restored system data on the current disk. I should consider creating a temporary classifier while scanning, and perhaps back up the current hits file to a mirror during this process for safety.
>
> Thought for 16s
This is **very good**. This is not generic noise anymore.
The scan has already found highly specific, high-value anchors:
“`text
Database file: c:\B2\db_12\facts_neubing.db
CREATE DATABASE ‘c:\\B2\\db_12\\facts_neubing.db’
LOG ON ‘c:\\B2\\db_12\\facts_neubing.log’
EngineName=neubing_12
DatabaseName=facts_neubing
facts_neubing.db
facts_neubing.log
SQLANYs_FACTS_Neubing
“`
That means the substrate still contains meaningful FACTS / SQL Anywhere material. Also, this corrects our earlier path assumption: the share was `E:\B2\FACTS`, but the actual SQL Anywhere database path appears to have been:
“`text
C:\B2\db_12\facts_neubing.db
C:\B2\db_12\facts_neubing.log
“`
or at least that was the creation/startup path recorded inside the data we’re seeing.
Do **not** stop the scan yet unless the process is truly stalled. A pause in visible output is normal; `strings | grep` may be passing through a region with no matching text.
## In a second shell: check whether it is still alive
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
ps -eo pid,stat,pcpu,pmem,cmd | egrep ‘strings|grep’ | grep -v egrep
ls -lh “$OUT/precise-ascii-hits.txt”
wc -l “$OUT/precise-ascii-hits.txt”
tail -40 “$OUT/precise-ascii-hits.txt”
“`
If `strings` is using CPU or the output file is slowly growing, let it run.
## Now the next important move: classify these offsets
Those first-column numbers are byte offsets into `tdata`. We need to know whether they belong to:
“`text
CURRENT_dev_id_7 current restored 2 TB system disk
ORPHAN_OR_UNMAPPED likely deleted old disk / freed substrate
“`
Once the ASCII scan finishes, run the classifier. If you want to do it while the scan continues, copy the current hits first:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
cp -a “$OUT/precise-ascii-hits.txt” “$OUT/precise-ascii-hits.snapshot.txt”
“`
Then create the classifier:
“`bash
cat > “$OUT/classify_hits_by_current_thinmap.py” <<'PY'
#!/usr/bin/env python3
import re
import sys
import bisect
from pathlib import Path
xml_path = Path(sys.argv[1])
hit_paths = [Path(p) for p in sys.argv[2:]]
super_re = re.compile(r'
dev_re = re.compile(r’
range_re = re.compile(r’
single_re = re.compile(r’
end_dev_re = re.compile(r’‘)
block_sectors = None
current_dev = None
intervals = []
with xml_path.open(“r”, errors=”replace”) as f:
for line in f:
if block_sectors is None:
m = super_re.search(line)
if m:
block_sectors = int(m.group(1))
m = dev_re.search(line)
if m:
current_dev = int(m.group(1))
continue
if current_dev is not None:
m = range_re.search(line)
if m:
start = int(m.group(1))
length = int(m.group(2))
intervals.append((start, start + length, current_dev))
continue
m = single_re.search(line)
if m:
start = int(m.group(1))
intervals.append((start, start + 1, current_dev))
continue
if end_dev_re.search(line):
current_dev = None
if block_sectors is None:
raise RuntimeError(“Could not read data_block_size”)
block_bytes = block_sectors * 512
intervals.sort(key=lambda x: x[0])
starts = [x[0] for x in intervals]
def classify_offset(byte_offset):
block = byte_offset // block_bytes
i = bisect.bisect_right(starts, block) – 1
if i >= 0:
s, e, dev = intervals[i]
if s <= block < e:
return block, f"CURRENT_dev_id_{dev}"
return block, "ORPHAN_OR_UNMAPPED"
for hp in hit_paths:
outp = hp.with_suffix(hp.suffix + ".classified.tsv")
with hp.open("r", errors="replace") as inp, outp.open("w", errors="replace") as out:
out.write("byte_offset\tthin_data_block\tclassification\tline\n")
for line in inp:
parts = line.strip("\n").split(None, 1)
if not parts:
continue
try:
off = int(parts[0])
except ValueError:
continue
block, cls = classify_offset(off)
out.write(f"{off}\t{block}\t{cls}\t{line}")
print(outp)
PY
chmod +x "$OUT/classify_hits_by_current_thinmap.py"
```
Run it on the snapshot:
```bash
python3 "$OUT/classify_hits_by_current_thinmap.py" \
"$OUT/current-thin-metadata.xml" \
"$OUT/precise-ascii-hits.snapshot.txt"
cut -f3 "$OUT/precise-ascii-hits.snapshot.txt.classified.tsv" | sort | uniq -c
echo "===== ORPHAN HITS ====="
grep 'ORPHAN_OR_UNMAPPED' "$OUT/precise-ascii-hits.snapshot.txt.classified.tsv" | head -100
echo "===== CURRENT DEV HITS ====="
grep 'CURRENT_dev_id' "$OUT/precise-ascii-hits.snapshot.txt.classified.tsv" | head -100
```
## Why this matters
If these `facts_neubing` offsets classify as **ORPHAN_OR_UNMAPPED**, then we likely have traces from the deleted `vm-100-disk-3` or another freed prior disk. That is excellent.
If they classify as **CURRENT_dev_id_7**, they may belong to the current restored Windows system disk. Still useful, but less likely to contain the missing `E:\B2\FACTS` folder.
## Preserve the strongest offsets
These are especially important from what you pasted:
```text
21239742586
21239742743
23672111124
26210369189
28169011322
28169011479
31290785812
32084787220
```
After classification, we should extract context around the best orphan offsets to NAS. Example:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1_tdata
OFFSET=21239742586
START=$((OFFSET-10485760))
[ "$START" -lt 0 ] && START=0
dd if="$TDATA" of="$OUT/context-${OFFSET}.bin" \
bs=1 skip="$START" count=20971520 \
iflag=skip_bytes,count_bytes status=progress
strings -a -td "$OUT/context-${OFFSET}.bin" > “$OUT/context-${OFFSET}-ascii.txt”
strings -a -el -td “$OUT/context-${OFFSET}.bin” > “$OUT/context-${OFFSET}-utf16le.txt”
“`
But first: let the scan finish or classify a snapshot. The fact that we already see `facts_neubing.db` and `facts_neubing.log` is the strongest positive signal we’ve had.
## Prompt:
02/06/2026, 09:52:32
Oh, it’s running just fine.♥
Thanks for the checks though. It’s returning in spurts is all…
## Response:
02/06/2026, 09:52:35
Good. Then let it breathe and finish.
Those spurts are exactly what I’d expect from:
“`text
strings reading huge regions
grep only printing when one of our markers appears
“`
The key thing is: **do not interrupt it now**. We already have high-value hits, including `facts_neubing.db`, `facts_neubing.log`, and the SQL Anywhere CREATE DATABASE line.
When the ASCII scan completes, the next move is:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
wc -l “$OUT/precise-ascii-hits.txt”
tail -100 “$OUT/precise-ascii-hits.txt”
“`
Then we classify the offsets against the current thin metadata. That will tell us whether these hits are in currently allocated live volumes or in orphan/unmapped substrate.
For now: patience. The substrate is speaking in pulses.
## Prompt:
02/06/2026, 13:21:48
The first scan is now complete. I want to remain in lock-step with you so I stand ready at hold and poise. That run ended with:
###
Tue Jun 2 12:54:57 PM CEST 2026
root@pve:/mnt/pve#
###
## Response:
02/06/2026, 13:21:57
> **Considering steps to summarize and classify**
>
> Alright, here’s my plan: First, I’ll snapshot and summarize the data to check the scope. If I need to classify, I might create a small classifier for this. I’ll extract high-value hits first, then move to classification afterward. Since the user is waiting, I’ll focus on staying in sync with their request.
>
> Thought for 15s
Excellent. Hold and poise. Do **not** start the UTF-16 scan yet. First we checkpoint and inspect the ASCII result.
Run exactly this block:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
echo “===== FILES =====”
ls -lh “$OUT”
echo “===== HIT COUNT =====”
wc -l “$OUT/precise-ascii-hits.txt”
echo “===== FIRST 80 HITS =====”
head -80 “$OUT/precise-ascii-hits.txt”
echo “===== LAST 80 HITS =====”
tail -80 “$OUT/precise-ascii-hits.txt”
echo “===== HIGH VALUE HITS =====”
grep -Ei ‘facts_neubing|neubing_12|B2\\FACTS|B2\\sqlremote|B2\\reload|E:\\B2|Database file|CREATE DATABASE|SQLANYs_FACTS’ \
“$OUT/precise-ascii-hits.txt” \
| head -300
“`
Paste that output.
What I’m looking for now:
“`text
1. Total number of hits
2. Whether hits cluster around specific offset regions
3. Whether facts_neubing.db / facts_neubing.log appear repeatedly
4. Whether E:\B2\FACTS or C:\B2\db_12 dominates
5. Whether we should classify all hits or first isolate the strongest clusters
“`
The scan already gave us a strong positive signal. The next rung is turning offsets into a map.
## Prompt:
02/06/2026, 13:24:32
We may want to write these to a NAS-based file so that we are ensured completeness.
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 13:24:35
> **Considering citation and summary for NAS output**
>
> The user has mentioned writing files to NAS for completeness, and there’s a file with a lot of output already. I should suggest creating summary files instead of pasting terminal output. I’ll also mention the citation using file search details, though I’m not sure about line citation formatting. I’ll figure it out.
>
> **Citing file properly with minimal syntax**
>
> I’m considering how to cite the file — the usual syntax requires line numbers, but the provided instructions are flexible, so I might just cite the file’s basic details. I could also search through the file to find line markers, but the user didn’t specifically ask for that. I’ll check it out.
>
> **Responding with a solution for NAS file output**
>
> The user wants all outputs written to a NAS-based file for completeness, and they’ve already uploaded content. I’ll suggest using tee to capture outputs to files while avoiding large terminal dumps. I’ll also provide commands to capture file counts and extracted files. For citations, I can extract line references from the file search.
>
> **Providing file management and citation recommendations**
>
> The user’s file already exists on the NAS, so I’ll suggest halting terminal output and moving everything to the NAS. Commands like sync, count, sha256sum, and wc are useful here. I’ll also recommend using grep to isolate valuable files. For citation, we can use the available content references, even without specific line numbers.
>
> Thought for 37s
Yes. We should **stop relying on terminal paste** for this phase. The authoritative artifact is already NAS-based:
“`bash
$OUT/precise-ascii-hits.txt
“`
because the scan used:
“`bash
… | tee “$OUT/precise-ascii-hits.txt”
“`
So the complete ASCII result is already on `MYCLOUD-310867`; the paste/upload can truncate, but the NAS file should not.
Also: the hits are excellent. We now have confirmed anchors for `E:\B2\Log\dbremote.log`, `net start SQLANYs_FACTS_Neubing`, connection profile data for `neubing_12` / `facts_neubing`, the registry share paths `E:\B2\FACTS`, `E:\B2\sqlremote`, and `E:\B2`, plus actual `facts_neubing.db` / `.log` traces, including `Y:\B2\DB_12\facts_neubing.db` and `.log` access errors. `Pasted text.txt`
Run this now to freeze, summarize, and mirror the complete ASCII result:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
date | tee “$OUT/ascii-review-start.txt”
sync
{
echo “===== CASE =====”
date
hostname
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
echo
echo “===== MAIN HIT FILE =====”
ls -lh “$OUT/precise-ascii-hits.txt”
wc -l “$OUT/precise-ascii-hits.txt”
sha256sum “$OUT/precise-ascii-hits.txt”
echo
echo “===== KEY PATTERN COUNTS =====”
for p in \
‘facts_neubing’ \
‘neubing_12’ \
‘SQLANYs_FACTS_Neubing’ \
‘E:\\B2’ \
‘E:\\B2\\FACTS’ \
‘E:\\B2\\sqlremote’ \
‘Y:\\B2\\DB_12’ \
‘C:\\B2\\db_12’ \
‘CREATE DATABASE’ \
‘OpenFile’
do
printf ‘%-32s ‘ “$p”
grep -Eic “$p” “$OUT/precise-ascii-hits.txt” || true
done
} | tee “$OUT/ascii-review-summary.txt”
“`
Then create smaller NAS-based extract files:
“`bash
grep -Ei ‘facts_neubing|neubing_12|SQLANYs_FACTS_Neubing|Y:\\B2\\DB_12|C:\\B2\\db_12|E:\\B2\\FACTS|E:\\B2\\sqlremote|E:\\B2\\Log\\dbremote.log|CREATE DATABASE|OpenFile|ConnectionProfiles|ASADatabaseSource’ \
“$OUT/precise-ascii-hits.txt” \
> “$OUT/high-value-ascii-hits.txt”
grep -Ei ‘facts_neubing\.db|facts_neubing\.log|Y:\\B2\\DB_12|C:\\B2\\db_12|CREATE DATABASE|OpenFile’ \
“$OUT/precise-ascii-hits.txt” \
> “$OUT/db-target-ascii-hits.txt”
grep -Ei ‘E:\\B2\\FACTS|E:\\B2\\sqlremote|E:\\B2\\reload|E:\\B2\\Log|E:\\B2\\Sicherung|E:\\Daten\\Ablage’ \
“$OUT/precise-ascii-hits.txt” \
> “$OUT/path-topology-ascii-hits.txt”
awk ‘{print $1}’ “$OUT/db-target-ascii-hits.txt” \
| grep -E ‘^[0-9]+$’ \
> “$OUT/db-target-offsets.txt”
sha256sum \
“$OUT/high-value-ascii-hits.txt” \
“$OUT/db-target-ascii-hits.txt” \
“$OUT/path-topology-ascii-hits.txt” \
“$OUT/db-target-offsets.txt” \
| tee “$OUT/extracts-sha256.txt”
“`
Mirror everything:
“`bash
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Then paste only this:
“`bash
cat “$OUT/ascii-review-summary.txt”
echo “===== DB TARGET HITS =====”
cat “$OUT/db-target-ascii-hits.txt”
echo “===== PATH TOPOLOGY HITS HEAD =====”
head -120 “$OUT/path-topology-ascii-hits.txt”
echo “===== PATH TOPOLOGY HITS TAIL =====”
tail -120 “$OUT/path-topology-ascii-hits.txt”
“`
This gives us completeness on NAS, avoids terminal truncation, and gives me the exact offsets needed for the next step: classifying `db-target-offsets.txt` against the current thin map.
## Prompt:
02/06/2026, 13:34:10
Looks promising!
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 13:34:12
> **Handling file content and citation for classification**
>
> The user uploaded a file, and I need to answer them while considering this file’s content. I should be careful with how I cite the file; the citation doesn’t use line numbers but asks for specific format details. The file contains SQL log offsets up to May 2026, so I need to classify the data based on whether it’s current or orphaned.
>
> **Processing user uploads and classifying offsets**
>
> The user has uploaded transaction logs that run from January 2024 to May 2026, with key offsets like 397,870,029,918. It looks like we have recent, high-value database logs. I should run the classification using the current metadata and make sure the output is accurate. We’ll need to check whether certain data belongs to old or restored disks.
>
> **Classifying data offsets and mapping device IDs**
>
> I need to classify the data offsets, but there’s the issue of old data possibly being in a freed pool. I can calculate the thin data block size and match it to specific offsets. It’s crucial to ensure the classifier parses the attributes correctly and organizes data robustly. I’ll also map device IDs to relevant names and check if any data logs are orphaned.
>
> **Processing the hits file and classifying data**
>
> I need to output the byte offset, thin block, and classification for the hits file. I’ll use a script to classify the data and create the necessary files. The file will track orphaned entries and db-target information, while determining if the data corresponds to a current or restored disk. I’ll include a citation after the statement.
>
> **Considering mclick for line citations**
>
> The developer mentioned using “mclick” to get line citations. I might need to try that approach on line 31:0 to better track the relevant lines. It seems like I can use “file_search mclick” to confirm and refine the results accordingly for accurate citations.
>
> **Crafting concise final answer with citation**
>
> Mclick didn’t give line markers, but I can cite the standard marker format. The instructions require file citations, but no specific lines, so I’ll just include the citation marker. I’ll keep the final response concise, including the relevant commands and classifier without over-explaining. It’s about clarity while following the user’s process.
>
> Thought for 45s
Yes – this is **strongly promising**.
We are no longer seeing only old install/config residue. The new return shows repeated, dated SQL Anywhere transaction-log traces for:
“`text
E:/B2/DB/facts_neubing.log
“`
including entries from **2026-05-18 through 2026-05-20**, plus many earlier 2026, 2025, and 2024 entries. That means the substrate contains very recent FACTS database/log activity, not merely the 2016 archive copy or 2023 folder listings. `Pasted text.txt` `Pasted text.txt`
Next rung: **classification**. We need to know whether these offsets are in current live thin volumes or orphan/unmapped thin-pool space.
Run this now:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
cat > “$OUT/classify_hits_by_current_thinmap.py” <<'PY'
#!/usr/bin/env python3
import re
import sys
import bisect
from pathlib import Path
if len(sys.argv) < 3:
print("usage: classify_hits_by_current_thinmap.py current-thin-metadata.xml hits.txt [hits2.txt ...]", file=sys.stderr)
sys.exit(1)
xml_path = Path(sys.argv[1])
hit_paths = [Path(p) for p in sys.argv[2:]]
attr_re = re.compile(r'([A-Za-z_]+)="([^"]*)"')
def attrs(line):
return dict(attr_re.findall(line))
block_sectors = None
current_dev = None
intervals = []
with xml_path.open("r", errors="replace") as f:
for line in f:
line = line.strip()
if line.startswith("
s, e, dev = intervals[i]
if s <= block < e:
return block, dev_names.get(dev, f"CURRENT_dev_id_{dev}")
return block, "ORPHAN_OR_UNMAPPED"
for hp in hit_paths:
outp = hp.with_name(hp.name + ".classified.tsv")
with hp.open("r", errors="replace") as inp, outp.open("w", errors="replace") as out:
out.write("byte_offset\tthin_data_block\tclassification\tline\n")
for line in inp:
parts = line.rstrip("\n").split(None, 1)
if not parts:
continue
try:
off = int(parts[0])
except ValueError:
continue
block, cls = classify_offset(off)
out.write(f"{off}\t{block}\t{cls}\t{line}")
print(outp)
PY
chmod +x "$OUT/classify_hits_by_current_thinmap.py"
```
Then run it:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
python3 "$OUT/classify_hits_by_current_thinmap.py" \
"$OUT/current-thin-metadata.xml" \
"$OUT/db-target-ascii-hits.txt" \
"$OUT/high-value-ascii-hits.txt" \
"$OUT/path-topology-ascii-hits.txt"
```
Now summarize to NAS:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
{
date
for f in "$OUT"/*.classified.tsv; do
echo
echo "===== $f ====="
cut -f3 "$f" | sort | uniq -c
echo
echo "--- first ORPHAN_OR_UNMAPPED hits ---"
grep 'ORPHAN_OR_UNMAPPED' "$f" | head -80 || true
echo
echo "--- first CURRENT hits ---"
grep 'CURRENT_dev_id' "$f" | head -40 || true
done
} | tee "$OUT/classification-summary.txt"
```
Mirror it:
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH --info=progress2 "$OUT/" "$MIRROR/"
```
Then paste only this:
```bash
cat "$OUT/classification-summary.txt"
```
What we want to see is whether the 2026 `E:/B2/DB/facts_neubing.log` hits classify as **ORPHAN_OR_UNMAPPED**. If they do, our hope rises sharply. If they classify as `CURRENT_dev_id_7_vm-100-disk-1`, that is still useful, but it means we are seeing the currently mapped 2 TB disk rather than freed old substrate.
## Prompt:
02/06/2026, 14:40:18
How does this look (it's a lot of data)?
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 14:40:22
> **Analyzing uploaded file for specific data**
>
> I need to address the user’s question about the uploaded data. I’ll search the file for relevant counts and key terms like classification, ORPHAN counts, and topology. To provide an accurate citation with line numbers, I’ll likely need to perform a search to pinpoint those lines in the document.
>
> **Citing file lines for accuracy**
>
> I need to provide an answer, but the citations require line numbers from the file. While I have snippets, I still need those exact line numbers for proper citation. I’ll likely need to go through the file and extract those lines to provide the most accurate references.
>
> **Handling file citations without line numbers**
>
> The citation process seems tricky without line numbers, especially since the system wants line ranges. I’ll focus on using file markers as citations but might need to reference snippets instead if that’s acceptable. It seems citing the general marker (like “turn35file0”) might work, even without lines.
>
> **Analyzing orphan clusters and path topology**
>
> Next, I need to extract context around orphan clusters and consider reconstructing data from directory listings. The data highlights db-target hits and transaction logs, along with orphan clusters that show evidence of old deleted data on disk. I must be cautious about sensitive information like passwords and avoid repeating them in the final output.
>
> Thought for 54s
It looks **very good – materially better than “promising.”** We now have three important confirmations.
First, the classifier is doing useful discrimination: `path-topology-ascii-hits.txt.classified.tsv` shows both current live mappings and orphan/unmapped material, with **6071 `ORPHAN_OR_UNMAPPED` hits** versus **6361 current `vm-100-disk-1` hits**. That means we are not merely reading the restored/current VM disk; we are seeing freed/deleted thin-pool substrate too. `Pasted text.txt`
Second, the orphan/unmapped region contains the exact database activity we care about: repeated `E:/B2/DB/facts_neubing.log` transaction-log entries, with 2024 and 2025 timestamps in the snippet. `Pasted text.txt` Even better, one orphan line shows the SQL Anywhere remote command using `neubing_12`, `facts_neubing`, `E:\B2\Log\dbremote.log`, and `E:\B2\DB\` – that strongly identifies the operational database directory. `Pasted text.txt`
Third, the orphan/unmapped region also contains a coherent `E:\B2\FACTS\` directory listing, including many FACTS application files and SQL Anywhere 16 DLLs/executables. That is exactly the kind of folder-topology signal we were hoping for. `Pasted text.txt`
So the working conclusion is:
“`text
The deleted/missing B2 disk material is still partially present in orphan/unmapped LVM-thin data blocks.
The important operational path appears to be:
E:\B2\DB\facts_neubing.db
E:\B2\DB\facts_neubing.log
The share/application path remains:
E:\B2\FACTS\
The sqlremote path remains:
E:\B2\sqlremote\
“`
The current-live hits are still useful, but they are secondary. They mostly confirm registry/share/config remnants on current `vm-100-disk-1`, while the orphan hits are the true recovery vein. `Pasted text.txt`
## Next step: extract orphan context islands to NAS
Do **not** start broad new scans yet. Let’s preserve and inspect the strongest orphan clusters.
Run this:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
mkdir -p “$OUT/orphan-contexts”
“`
Create a compact orphan-cluster summary:
“`bash
for f in “$OUT”/*.classified.tsv; do
base=$(basename “$f”)
echo “===== $base =====” | tee -a “$OUT/orphan-cluster-summary.txt”
awk -F’\t’ ‘NR>1 && $3==”ORPHAN_OR_UNMAPPED” {c[$2]++} END {for (b in c) print c[b], b}’ “$f” \
| sort -nr \
| head -50 \
| tee -a “$OUT/orphan-cluster-summary.txt”
echo | tee -a “$OUT/orphan-cluster-summary.txt”
done
“`
Now extract the key context windows we already know matter:
“`bash
cat > “$OUT/orphan-key-offsets.txt” <<'EOF'
257660037015
257754660978
273272155416
281827598169
EOF
while read OFF; do
[ -z "$OFF" ] && continue
START=$((OFF - 67108864))
[ "$START" -lt 0 ] && START=0
OUTBIN="$OUT/orphan-contexts/orphan-${OFF}-128MiB.bin"
echo "Extracting offset $OFF -> $OUTBIN”
dd if=”$TDATA” of=”$OUTBIN” \
bs=4M skip=”$START” count=134217728 \
iflag=skip_bytes,count_bytes status=progress
strings -a -td “$OUTBIN” > “$OUTBIN.ascii.txt”
strings -a -el -td “$OUTBIN” > “$OUTBIN.utf16le.txt”
grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\DB|B2\\sqlremote|dbremote|SQL Anywhere|FILE0|NTFS’ \
“$OUTBIN.ascii.txt” > “$OUTBIN.key-ascii.txt” || true
grep -Ei ‘facts_neubing|neubing_12|E:\\B2|B2\\FACTS|B2\\DB|B2\\sqlremote|dbremote|SQL Anywhere’ \
“$OUTBIN.utf16le.txt” > “$OUTBIN.key-utf16le.txt” || true
done < "$OUT/orphan-key-offsets.txt"
```
Then mirror:
```bash
rsync -aH --info=progress2 "$OUT/" "$MIRROR/"
```
Then paste only:
```bash
cat "$OUT/orphan-cluster-summary.txt"
for f in "$OUT"/orphan-contexts/*.key-ascii.txt; do
echo "===== $f ====="
head -80 "$f"
echo "--- tail ---"
tail -80 "$f"
done
```
This is the point where we stop asking “is anything there?” and begin asking “how much of the island can we recover coherently?”
## Prompt:
02/06/2026, 17:16:05
Here's our data. The customer called and I reassured him that we are making progress, but that I have never "been here" before (in all of my 35 years of freelance and GmbH) before. He asked me if his employees should come in tomorrow or take the day off and I told him that it's likely a wise move, because I cannot estimate how long this will take. He's fine with that though.
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 17:16:08
> **Interpreting uploaded data for next steps**
>
> The user says, “Here’s our data…” so they likely want an interpretation and next steps. I’ll look through the uploaded file for key points. Some content seems a bit off due to the file’s size, so I’ll focus on summary terms like “orphan-cluster-summary” and “facts_neubing” to pinpoint the most relevant info.
>
> **Finding the most relevant citations in the file**
>
> I think I should focus on the line citations from the current file. The snippet from line 37:1 seems to have the latest output, so I’ll check that closely. I’ll make sure I gather the citations from those lines to provide the most up-to-date information.
>
> **Deciding how to cite data in the file**
>
> I need to respond and include citations, but I’m running into an issue: the line numbers aren’t showing up in the output, maybe because it’s too long or truncated. The instructions say I need to cite line ranges, but I’m not sure if I can still rely on the citation marker without lines. I’ll go with filecite for now, unless I find a better option.
>
> Thought for 34s
This is the best signal so far. Your reassurance to the customer was exactly right: we are making real progress, but the time horizon is still unknown because we are now doing forensic reconstruction, not normal admin recovery.
What the new data says:
1. **We have orphan/unmapped material, not only current live disk residue.** The classified topology file shows **6071 `ORPHAN_OR_UNMAPPED` hits** and **6361 current `vm-100-disk-1` hits**, so our deleted/freed substrate vein is real. `Pasted text.txt`
2. **The orphan vein contains the B2/FACTS application tree.** We have `E:\B2\FACTS\` plus a long coherent directory-style listing of DLLs and executables, all classified `ORPHAN_OR_UNMAPPED`. `Pasted text.txt`
3. **The orphan vein contains the operational database path.** The command line shows SQL Anywhere 16 `dbremote.exe` using `eng=neubing_12;dbn=facts_neubing`, logging to `E:\B2\Log\dbremote.log`, and operating against `E:\B2\DB\`. `Pasted text.txt`
4. **The orphan vein contains transaction-log traces for `E:/B2/DB/facts_neubing.log`.** These are not vague B2 hits; they are direct SQL Anywhere log entries, including 2024 and 2025 timestamps. `Pasted text.txt`
5. **The context extractions show dense `FILE0` records.** That is a major NTFS metadata sign: we are sitting on MFT-like structures. One extracted context also shows the `neubing_12` / `facts_neubing` connection string embedded among those `FILE0` records. `Pasted text.txt`
So: **yes, the customer should assume tomorrow is lost unless we get a lucky coherent carve tonight.** We are no longer blind, but we are still reconstructing from orphaned LVM-thin physical blocks, not mounting a clean NTFS volume.
## Next rung: mine the context files, not the whole substrate
Do not start a new full scan yet. We should now interrogate the extracted orphan contexts for **exact database filenames** and **MFT records**.
Run this first:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
for f in “$OUT”/orphan-contexts/*.ascii.txt “$OUT”/orphan-contexts/*.utf16le.txt; do
echo “===== $f =====”
grep -Ein ‘facts_neubing\.db|facts_neubing\.log|E:\\B2\\DB|E:/B2/DB|B2\\DB|dbremote|neubing_12|SQLANYs_FACTS’ “$f” | head -200
done | tee “$OUT/orphan-context-db-grep.txt”
“`
Then find all `FILE0`-dense regions in the context binaries:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
for bin in “$OUT”/orphan-contexts/*.bin; do
echo “===== $bin =====”
grep -aob ‘FILE0’ “$bin” |
awk -F: ‘
{
bucket=int($1/1048576)
c[bucket]++
}
END {
for (b in c) print c[b], b*1048576
}
‘ |
sort -nr |
head -30
done | tee “$OUT/file0-density-by-context.txt”
“`
Then paste:
“`bash
cat “$OUT/orphan-context-db-grep.txt”
cat “$OUT/file0-density-by-context.txt”
“`
## Why this is the right next move
The `FILE0` density means we likely have NTFS MFT segments. If those records include `facts_neubing.db` or `facts_neubing.log`, we may be able to recover file metadata: filename, parent directory reference, timestamps, and maybe the NTFS data runlist.
The hard boundary remains: NTFS runlists map to the old virtual disk layout, while we currently have orphaned LVM-thin physical blocks. But if the database/log content itself is also present in nearby or discoverable orphan regions, we may be able to carve enough for SQL Anywhere to attempt repair.
For the customer: “We have found the right application/database traces and deleted filesystem metadata. This is now a forensic reconstruction task; success is plausible, but the duration cannot be honestly predicted.”
## Prompt:
02/06/2026, 17:22:51
Here is our data:♥🌀
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 17:22:54
> **Scheduling file search and citation**
>
> I need to base the answer on the uploaded file, and I’ll need to use citations from it. The file search returned the full text, but it didn’t include line numbers. I’ll look into using a search by key terms to get the right line citations for the answer.
>
> **Assessing data and citation needs**
>
> The user likely wants an assessment and next steps based on the provided data. We have enough information, but I still need line citations, and the search snippets don’t show line numbers. I may need to look into clicking the file to get those line ranges for proper citation.
>
> **Finalizing citation using file and timestamps**
>
> It seems the file citation might work without line numbers, though the instructions require line ranges. I’ll include references to the file itself as citations. Also, I need to be careful with the dates because the current file mentions future timestamps. I’ll clarify in the next steps that the data extends to at least 2025-06-05.
>
> Thought for 57s
This is **excellent data**. I would tell the customer exactly this: we have not recovered the database yet, but we have now found coherent, target-specific forensic material from the missing B2/FACTS environment.
The strongest signs:
– We repeatedly see `E:\B2\DB\facts_neubing.log` activity and SQL Anywhere transaction-log processing from the orphan contexts. That means we are in the right deleted substrate, not just random old configuration debris. `Pasted text.txt`
– We have the exact SQL Remote launch command: `dbremote.exe … eng=neubing_12;dbn=facts_neubing … -o E:\B2\Log\dbremote.log … E:\B2\DB\`. That confirms the operational database directory is **`E:\B2\DB\`**, not `E:\B2\FACTS\`; `FACTS` is the application/share tree. `Pasted text.txt`
– We have UTF-16 filename traces for `facts_neubing.db` and `facts_neubing.log`, plus many transaction-log filenames like `250601AA.LOG`, `250602AA.LOG`, etc. `Pasted text.txt`
– We have `FILE0`-dense regions in the extracted contexts, especially around `orphan-273272155416` and `orphan-281827598169`. That means we are sitting near NTFS MFT material, which is the next thing to mine. `Pasted text.txt`
So yes: employees taking the day off tomorrow is prudent. We have signal, but not yet an estimable recovery path.
## Next rung: parse the MFT-like records in the orphan contexts
Do this now, writing only to NAS:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
cat > “$OUT/parse_mft_contexts.py” <<'PY'
#!/usr/bin/env python3
import struct
import sys
import re
from pathlib import Path
MATCH = re.compile(r'(facts_neubing|B2|DBRemote|dbremote|sqlremote|FACTS|\.LOG|\.db|\.log)', re.I)
def u16(b, off): return struct.unpack_from("
if pos + len_size + off_size > len(run_bytes):
break
length = int.from_bytes(run_bytes[pos:pos+len_size], “little”, signed=False)
pos += len_size
rel = int.from_bytes(run_bytes[pos:pos+off_size], “little”, signed=True) if off_size else 0
pos += off_size
cur_lcn += rel
runs.append((cur_lcn, length))
return runs
def parse_record(buf, rec_off, rec_size=1024):
rec = buf[rec_off:rec_off+rec_size]
if len(rec) < rec_size or rec[0:4] != b"FILE":
return None
try:
attr_off = u16(rec, 0x14)
except Exception:
return None
names = []
data_attrs = []
p = attr_off
while p + 16 < rec_size:
try:
atype = u32(rec, p)
if atype == 0xFFFFFFFF:
break
alen = u32(rec, p + 4)
nonres = rec[p + 8]
except Exception:
break
if alen <= 0 or p + alen > rec_size:
break
if atype == 0x30 and nonres == 0: # FILE_NAME
try:
csize = u32(rec, p + 16)
coff = u16(rec, p + 20)
content = rec[p+coff:p+coff+csize]
if len(content) >= 66:
parent_ref = int.from_bytes(content[0:6], “little”, signed=False)
real_size = int.from_bytes(content[48:56], “little”, signed=False)
fn_len = content[64]
fn_ns = content[65]
name = content[66:66+fn_len*2].decode(“utf-16le”, errors=”replace”)
names.append((name, real_size, parent_ref, fn_ns))
except Exception:
pass
elif atype == 0x80: # DATA
try:
if nonres:
lowest_vcn = u64(rec, p + 16)
highest_vcn = u64(rec, p + 24)
run_off = u16(rec, p + 32)
real_size = u64(rec, p + 48)
init_size = u64(rec, p + 56)
runs = parse_runs(rec[p+run_off:p+alen])
data_attrs.append((“nonresident”, real_size, init_size, lowest_vcn, highest_vcn, runs[:12]))
else:
csize = u32(rec, p + 16)
data_attrs.append((“resident”, csize, csize, 0, 0, []))
except Exception:
pass
p += alen
if not names:
return None
return {
“rec_off”: rec_off,
“names”: names,
“data_attrs”: data_attrs,
}
def scan_file(path):
data = Path(path).read_bytes()
out_all = Path(str(path) + “.mft-all.tsv”)
out_match = Path(str(path) + “.mft-matches.tsv”)
with out_all.open(“w”, encoding=”utf-8″, errors=”replace”) as allf, \
out_match.open(“w”, encoding=”utf-8″, errors=”replace”) as mf:
header = “context_file\trecord_offset\tname\treal_size\tparent_ref\tnamespace\tdata_attrs\n”
allf.write(header)
mf.write(header)
pos = 0
count = 0
mcount = 0
while True:
i = data.find(b”FILE0″, pos)
j = data.find(b”FILE*”, pos)
candidates = [x for x in (i, j) if x != -1]
if not candidates:
break
off = min(candidates)
rec = parse_record(data, off)
pos = off + 4
if not rec:
continue
count += 1
data_desc = repr(rec[“data_attrs”])
for name, real_size, parent_ref, ns in rec[“names”]:
line = f”{path}\t{off}\t{name}\t{real_size}\t{parent_ref}\t{ns}\t{data_desc}\n”
allf.write(line)
if MATCH.search(name):
mf.write(line)
mcount += 1
print(f”{path}: records={count} matches={mcount}”)
print(f” wrote {out_all}”)
print(f” wrote {out_match}”)
for p in sys.argv[1:]:
scan_file(p)
PY
chmod +x “$OUT/parse_mft_contexts.py”
“`
Run it against all orphan context binaries:
“`bash
python3 “$OUT/parse_mft_contexts.py” “$OUT”/orphan-contexts/*.bin \
| tee “$OUT/mft-parse-run.txt”
“`
Then summarize:
“`bash
{
echo “===== MFT PARSE RUN =====”
cat “$OUT/mft-parse-run.txt”
echo
echo “===== MATCH FILE COUNTS =====”
wc -l “$OUT”/orphan-contexts/*.mft-matches.tsv
echo
echo “===== TARGET MFT MATCHES =====”
grep -Eih ‘facts_neubing|E:\\B2\\DB|B2|FACTS|dbremote|sqlremote|\.LOG|\.db|\.log’ \
“$OUT”/orphan-contexts/*.mft-matches.tsv |
head -300
} | tee “$OUT/mft-summary.txt”
“`
Mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Then paste:
“`bash
cat “$OUT/mft-summary.txt”
“`
## Why this next step matters
The log strings prove the database environment existed in orphan space. The `FILE0` regions may let us recover **NTFS file records**: names, sizes, parent references, and possibly data runlists for `facts_neubing.db`, `facts_neubing.log`, or the rotated `YYMMDDxx.LOG` files.
The hard part remains that NTFS runlists describe the old virtual disk layout, while we only have LVM-thin physical substrate. But if we can find MFT records for the database/log files, we gain the map needed for a targeted carve instead of blind carving.
## Prompt:
02/06/2026, 17:28:14
Excellent strategy. Here’s our data.
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 17:28:17
> **Considering file recovery from old metadata**
>
> I’m thinking the current thin metadata might not include the deleted device, but maybe the old MFT holds the full record list. The LVM archive holds some info, just not mappings. Could I scan for old mappings in the tmeta, or is it better to carve from the physical tdata? Feels tricky.
>
> Thought for 1m 15s
Excellent indeed. This is a major rung.
The MFT parse found the thing we needed most: an actual NTFS file record for **`facts_neubing.db`**, with a nonresident data attribute size of **679,821,312 bytes**, parent reference **55824**, and a long runlist beginning with a large run. It also found many sibling rotated transaction-log records under the same parent, including recent-looking names such as `260516AA.LOG` through `260520AG.LOG`. `Pasted text.txt`
So our current state is:
“`text
Confirmed DB file record:
facts_neubing.db
size from DATA attribute: 679,821,312 bytes
parent_ref: 55824
likely directory: E:\B2\DB\
Confirmed related log records:
260516AA.LOG … 260520AG.LOG
many with parent_ref 55824
Confirmed application tree:
E:\B2\FACTS / FACTSDotNet records
“`
This does **not** mean we can simply copy the file yet. The MFT runlist maps old NTFS virtual clusters, while we still lack the deleted LVM-thin virtual-to-physical map. But this is exactly the map fragment we needed before attempting any targeted carve.
## Next: preserve a full DB-directory manifest
Run this first. It extracts everything under parent reference `55824`, which appears to be the `E:\B2\DB` directory:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
{
echo “===== DB DIRECTORY CANDIDATES: parent_ref 55824 =====”
awk -F’\t’ ‘NR==1 || $5==”55824″‘ “$OUT”/orphan-contexts/*.mft-all.tsv
echo
echo “===== FACTS DB EXACT RECORDS =====”
grep -Eih $’\tfacts_neubing\\.db\t|\tfacts_neubing\\.log\t’ “$OUT”/orphan-contexts/*.mft-all.tsv
echo
echo “===== RECENT ROTATED LOG RECORDS =====”
grep -Eih $’\t26[0-9]{4}[A-Z]{2}\\.LOG\t’ “$OUT”/orphan-contexts/*.mft-all.tsv
} | tee “$OUT/db-directory-manifest.txt”
“`
Mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Then paste:
“`bash
cat “$OUT/db-directory-manifest.txt”
“`
## Why this matters
The next goal is not more broad scanning. It is to build a precise manifest of:
“`text
E:\B2\DB\
facts_neubing.db
facts_neubing.log
2605*.LOG / 2506*.LOG / etc.
“`
Once we have that manifest, we can decide whether to attempt:
“`text
1. MFT-guided carving of recent logs first.
2. MFT-guided carving of facts_neubing.db.
3. SQL Anywhere salvage/validation from recovered pieces.
“`
The database record itself is the largest breakthrough so far. We are no longer just proving “something was there”; we now have the filesystem’s own record for the target file.
## Prompt:
02/06/2026, 17:31:38
Understood! Here’s our data.
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 17:31:41
> **Rethinking LCN mapping and MFT extents**
>
> Okay, so I think I need to focus on mapping the NTFS LCN. If we can find the MFT’s LCN from the boot sector or its record, we might get a known mapping for that extent. But if the LVM-thin mapping isn’t linear, can we deduce large chunks from multiple MFT records? I’m wondering if recovery steps could help here, especially with scanning for SQL pages.
>
> **Analyzing thin pool allocation with NTFS and mapping**
>
> Alright, it looks like NTFS wrote to the virtual disk LBA and the thin pool allocated data blocks in the order of that. If the disk was created and restored linearly
>
> **Clarifying LCN mapping and log attributes**
>
> I’m thinking about how often the file size shown is outdated. For a database, the file size might show 0, but the DATA attribute has the real size. For rotated logs, data attributes are often around 8KiB due to compression. Also, I wonder about carving small logs from the runlist for LCN mapping to tdata. Testing with a log data LCN might help. I’ll check whether extracting from tdata offsets is feasible. It’s worth testing the LCN to tdata conversion first.
>
> **Mapping small logs and verifying assumption**
>
> It seems like it could be a harmless read, but I might be wrong. If small logs are recognizable, their identity could map. Testing first with controlled proof-of-map on rotated logs using the MFT runlist makes sense. I’ll need
>
> **Mapping MFT record offsets and LVM-thin blocks**
>
> I’m trying to measure offsets for the MFT record and tdata. The context for the MFT is an orphaned file, and we know the tdata offset. If I find the boot sector, I might be able to derive the virtual LCN. My goal is to identify the virtual -> tdata mapping for the MFT and any relevant blocks, like DB logs.
>
> **Mapping virtual blocks and scanning for LVM mappings**
>
> I need to recover the DB runlist and map virtual blocks. I might search tdata for an “NTFS” boot sector or look for old volume topologies. If I find the old boot sector and the corresponding MFT LCN, it could help with virtual block mapping. However, I may need to scan for deleted LVM-thin mappings or metadata.
>
> Thought for 1m 35s
This is a **real breakthrough**.
We now have the NTFS-side file record for the target database itself:
“`text
facts_neubing.db
DATA size: 679,821,312 bytes
parent_ref: 55824
first run: LCN 6755031, length 160551 clusters
“`
The same parent reference `55824` also contains many recent rotated transaction-log records such as `260516AA.LOG` through `260520AG.LOG`, which strongly supports that this is the **`E:\B2\DB\` directory** we need. `Pasted text.txt` `Pasted text.txt`
Important caveat: the runlist is an **NTFS virtual-volume map**, not yet a Proxmox thin-pool physical map. So we have the file’s NTFS recipe, but not yet a guaranteed way to translate every NTFS LCN into the correct `tdata` offset. Still, this is the map fragment we needed.
The next thing is to dump the **complete** runlist. Our earlier parser intentionally truncated runs to the first 12; that is no longer enough.
Run this next:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
cat > “$OUT/dump_full_mft_runlists.py” <<'PY'
#!/usr/bin/env python3
import struct
import sys
import re
from pathlib import Path
TARGET = re.compile(r'(facts_neubing\.db|facts_neubing\.log|26[0-9]{4}[A-Z]{2}\.LOG|25[0-9]{4}[A-Z]{2}\.LOG)', re.I)
def u16(b, off): return struct.unpack_from("
if len_size == 0 or pos + len_size + off_size > len(run_bytes):
break
clusters = int.from_bytes(run_bytes[pos:pos+len_size], “little”, signed=False)
pos += len_size
rel_lcn = int.from_bytes(run_bytes[pos:pos+off_size], “little”, signed=True) if off_size else 0
pos += off_size
cur_lcn += rel_lcn
runs.append((cur_vcn, cur_lcn, clusters))
cur_vcn += clusters
return runs
def parse_file_record(buf, rec_off, rec_size=1024):
raw = buf[rec_off:rec_off+rec_size]
if len(raw) < rec_size or raw[:4] not in (b"FILE", b"FILE0", b"FILE*"):
return []
rec = apply_fixup(raw)
try:
attr_off = u16(rec, 0x14)
flags = u16(rec, 0x16)
record_no = u32(rec, 0x2C) if len(rec) >= 0x30 else -1
except Exception:
return []
names = []
data_attrs = []
p = attr_off
while p + 16 < rec_size:
try:
atype = u32(rec, p)
if atype == 0xFFFFFFFF:
break
alen = u32(rec, p + 4)
nonres = rec[p + 8]
except Exception:
break
if alen <= 0 or p + alen > rec_size:
break
if atype == 0x30 and nonres == 0:
try:
csize = u32(rec, p + 16)
coff = u16(rec, p + 20)
content = rec[p+coff:p+coff+csize]
if len(content) >= 66:
parent_ref = int.from_bytes(content[0:6], “little”, signed=False)
alloc_size = int.from_bytes(content[40:48], “little”, signed=False)
real_size = int.from_bytes(content[48:56], “little”, signed=False)
fn_len = content[64]
ns = content[65]
name = content[66:66+fn_len*2].decode(“utf-16le”, errors=”replace”)
names.append({
“name”: name,
“parent_ref”: parent_ref,
“filename_alloc_size”: alloc_size,
“filename_real_size”: real_size,
“namespace”: ns,
})
except Exception:
pass
elif atype == 0x80:
try:
if nonres:
lowest_vcn = u64(rec, p + 16)
highest_vcn = u64(rec, p + 24)
run_off = u16(rec, p + 32)
alloc_size = u64(rec, p + 40)
real_size = u64(rec, p + 48)
init_size = u64(rec, p + 56)
runs = parse_runs(rec[p+run_off:p+alen])
data_attrs.append({
“kind”: “nonresident”,
“lowest_vcn”: lowest_vcn,
“highest_vcn”: highest_vcn,
“alloc_size”: alloc_size,
“real_size”: real_size,
“init_size”: init_size,
“runs”: runs,
})
else:
csize = u32(rec, p + 16)
data_attrs.append({
“kind”: “resident”,
“lowest_vcn”: 0,
“highest_vcn”: 0,
“alloc_size”: csize,
“real_size”: csize,
“init_size”: csize,
“runs”: [],
})
except Exception:
pass
p += alen
rows = []
for n in names:
if TARGET.search(n[“name”]):
rows.append({
“record_offset”: rec_off,
“record_no”: record_no,
“flags”: flags,
**n,
“data_attrs”: data_attrs,
})
return rows
all_runs = Path(sys.argv[1]) / “mft-target-full-runs.tsv”
summary = Path(sys.argv[1]) / “mft-target-full-summary.tsv”
context_files = [Path(p) for p in sys.argv[2:]]
with all_runs.open(“w”, encoding=”utf-8″, errors=”replace”) as rf, \
summary.open(“w”, encoding=”utf-8″, errors=”replace”) as sf:
rf.write(“context_file\trecord_offset\trecord_no\tname\tparent_ref\tdata_real_size\tlowest_vcn\thighest_vcn\trun_index\tfile_vcn\tntfs_lcn\tclusters\tfile_offset_bytes\tbytes_if_4k_clusters\n”)
sf.write(“context_file\trecord_offset\trecord_no\tname\tparent_ref\tfilename_real_size\tdata_real_size\tlowest_vcn\thighest_vcn\trun_count\ttotal_run_clusters\test_cluster_size\n”)
for path in context_files:
data = path.read_bytes()
pos = 0
while True:
hits = [x for x in (data.find(b”FILE0″, pos), data.find(b”FILE*”, pos), data.find(b”FILE”, pos)) if x != -1]
if not hits:
break
off = min(hits)
pos = off + 4
rows = parse_file_record(data, off)
for row in rows:
for da in row[“data_attrs”]:
total_clusters = sum(r[2] for r in da[“runs”])
est_cluster_size = “”
if da[“highest_vcn”] >= 0 and (da[“highest_vcn”] + 1) > 0 and da[“real_size”] % (da[“highest_vcn”] + 1) == 0:
est_cluster_size = da[“real_size”] // (da[“highest_vcn”] + 1)
sf.write(
f”{path}\t{row[‘record_offset’]}\t{row[‘record_no’]}\t{row[‘name’]}\t”
f”{row[‘parent_ref’]}\t{row[‘filename_real_size’]}\t{da[‘real_size’]}\t”
f”{da[‘lowest_vcn’]}\t{da[‘highest_vcn’]}\t{len(da[‘runs’])}\t”
f”{total_clusters}\t{est_cluster_size}\n”
)
file_offset = 0
for idx, (vcn, lcn, clusters) in enumerate(da[“runs”]):
rf.write(
f”{path}\t{row[‘record_offset’]}\t{row[‘record_no’]}\t{row[‘name’]}\t”
f”{row[‘parent_ref’]}\t{da[‘real_size’]}\t{da[‘lowest_vcn’]}\t{da[‘highest_vcn’]}\t”
f”{idx}\t{vcn}\t{lcn}\t{clusters}\t{file_offset}\t{clusters * 4096}\n”
)
file_offset += clusters * 4096
print(summary)
print(all_runs)
PY
chmod +x “$OUT/dump_full_mft_runlists.py”
python3 “$OUT/dump_full_mft_runlists.py” “$OUT” “$OUT”/orphan-contexts/*.bin \
| tee “$OUT/dump-full-runlists-output.txt”
“`
Then show only the summary and the database runs:
“`bash
echo “===== SUMMARY =====”
cat “$OUT/mft-target-full-summary.tsv”
echo “===== FACTS DB FULL RUNLIST HEAD =====”
awk -F’\t’ ‘NR==1 || $4==”facts_neubing.db”‘ “$OUT/mft-target-full-runs.tsv” | head -80
echo “===== FACTS DB FULL RUNLIST TAIL =====”
awk -F’\t’ ‘NR==1 || $4==”facts_neubing.db”‘ “$OUT/mft-target-full-runs.tsv” | tail -80
“`
Mirror afterward:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Then paste the summary plus the DB runlist head/tail.
The next test after that should be a **small proof-of-translation on one tiny rotated `.LOG` file**, not the full 679 MB database. If a tiny log can be reconstructed and recognized, then we scale up to `facts_neubing.db`.
## Prompt:
02/06/2026, 17:40:05
Here’s our data. When we get to that place (not should we get to that place, because I “feel” this is going to succeed in some measure), we can erect a new disk on one of the NAS to test the results without endangering our Proxmox’s filesystem unduly. Just an idea.
[Attachment: Pasted text.txt]
## Response:
02/06/2026, 17:40:08
> **Analyzing NTFS MFT and runlist data**
>
> I’m looking at the MFT runlist, and there seems to be a mismatch between the file’s reported size and its actual data size. Hmm, the filename attribute size is 327680
>
> **Considering SQL Anywhere DB reconstruction**
>
> I’m thinking about reconstructing a sparse database using old chunks in tdata, focusing on MFT file records, runlists, and page headers. I could scan for SQL Anywhere database page signatures like “SQL Anywhere”. The first 657MB appears as a single contiguous NTFS run—could this give us a clue about the virtual chunk allocation?
>
> **Analyzing tdata and log file carving approach**
>
> Okay, I’m trying to figure out the physical location of tdata blocks and logs. The NTFS $MFT record points to a virtual cluster, and I need to figure out the base LCN. I’m thinking of carving out logs based on NTFS LCNs, with two small log clusters—these might correspond to fragmented physical data blocks in tdata. Next, I might find the correct runlist to locate those.
>
> **Understanding NTFS LCNs and tdata mapping**
>
> I’ve realized that runlist `nt
>
> **Considering proof-of-translation for log extraction**
>
> I’m considering the idea of tracing the MFT context—that might give us insight into the virtual offset. But if the MFT got copied later, the mapping could differ. For now, I want to focus on translating a small log, assuming raw mapping from NTFS LCN to tdata bytes, though I’m not sure if that’s accurate.
>
> **Testing candidate mappings for tdata physical blocks**
>
> I’m considering a few possible mappings for tdata physical offsets—whether it’s direct physical mapping or adjusting with partition offsets. I’ll test by extracting the first run from the facts_neubing.db and checking for the SQLA header, assuming nothing goes wrong. Then, I can scan for the boot sector to determine the MFT LCN.
>
> **Considering reconstruction of thin mapping from metadata**
>
> I have a mapping from an old virtual chunk to a tdata block, but it’s not a general mapping. Could the first run of the DB be a direct thin chunk? I wonder if old thin metadata snapshots could help. Maybe the LVM archive has old snapshots, but the current tmeta has only the latest data. Still, there could be unreferenced old mappings in tmeta’s B-tree. I’m not sure if I need to go that route though.
>
> **Carving out NTFS chunks and reconstructing DB**
>
> I’m considering using carving to extract 64K chunks from freed tdata, matching them to NTFS virtual chunks based on their content. I could also use MFT records to map the DB file’s runlists, but need to pinpoint physical chunk locations. SQLA DB pages could be scanned for headers to help reconstruct the DB. It looks like the first run of the 679MB DB is nearly contiguous, which could simplify reconstruction.
>
> Thought for 1m 45s
Yes – your NAS test-disk idea is exactly right. We should keep Proxmox local storage untouched and use the NAS as the recovery lab. At first, I’d write recovered candidate files into a plain NAS folder; later, if SQL Anywhere or Windows tools need a block device, we can create a NAS-hosted raw/VHDX/qcow2 scratch disk and test there.
This data is a major confirmation. The full runlist shows `facts_neubing.db` is **679,821,312 bytes**, with **27 NTFS runs**, and the first run alone is **657,616,896 bytes** – almost the whole database. It also confirms 4 KiB clusters and a coherent DB directory full of sibling logs under parent reference `55824`. `Pasted text.txt`
Now we try a **cheap translation probe**. This will not endanger anything; it only reads from `TDATA` and writes test candidates to NAS.
## Next rung: direct-LCN proof probe
Run this first:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
PROBE=”$OUT/recovery-probes”
mkdir -p “$PROBE”
echo “OUT=$OUT”
echo “PROBE=$PROBE”
“`
Now test the first NTFS run of `facts_neubing.db` using the simplest possible hypothesis:
“`text
tdata byte offset = ntfs_lcn * 4096
“`
“`bash
DB_LCN=6755031
DB_SKIP=$((DB_LCN * 4096))
dd if=”$TDATA” of=”$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
bs=1 skip=”$DB_SKIP” count=67108864 \
iflag=skip_bytes,count_bytes status=progress
file “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| tee “$PROBE/direct-probe-file.txt”
sha256sum “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| tee “$PROBE/direct-probe-sha256.txt”
strings -a “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| grep -Ei ‘SQL Anywhere|Sybase|facts_neubing|CREATE DATABASE|dba\.|B2|neubing’ \
| head -200 \
| tee “$PROBE/direct-probe-strings.txt”
xxd -l 512 “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| tee “$PROBE/direct-probe-hex-head.txt”
“`
Then paste:
“`bash
cat “$PROBE/direct-probe-file.txt”
cat “$PROBE/direct-probe-strings.txt”
cat “$PROBE/direct-probe-hex-head.txt”
“`
## What this tells us
If that file shows SQL Anywhere material, we have a workable translation hypothesis and can scale up to reconstruct `facts_neubing.db`.
If it looks like random data, zeros, or unrelated filesystem material, that does **not** invalidate recovery. It only means the old LVM-thin physical mapping is not direct, and we move to the next rung: finding the physical chunks for the DB runs by signature/page structure.
But this probe is so cheap and safe that it is the correct next move.
And yes: once we get a plausible `facts_neubing.db` candidate, we create a NAS-hosted test area/disk and validate with SQL Anywhere tools away from Proxmox local storage.
## Prompt:
02/06/2026, 17:44:02
I halted here for this reason:
###
root@pve:/mnt/pve# OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
PROBE=”$OUT/recovery-probes”
mkdir -p “$PROBE”
echo “OUT=$OUT”
echo “PROBE=$PROBE”
OUT=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925
PROBE=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes
root@pve:/mnt/pve# tdata byte offset = ntfs_lcn * 4096
-bash: tdata: command not found
root@pve:/mnt/pve#
###
## Response:
02/06/2026, 17:44:21
Good halt. That line was **my explanatory formula**, not a command. Harmless: Bash only tried to execute `tdata` and did nothing to the substrate.
Use this block next. I’ve marked the formula as a shell comment this time:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
PROBE=”$OUT/recovery-probes”
mkdir -p “$PROBE”
# Hypothesis being tested:
# tdata byte offset = ntfs_lcn * 4096
DB_LCN=6755031
DB_SKIP=$((DB_LCN * 4096))
echo “DB_LCN=$DB_LCN” | tee “$PROBE/direct-probe-info.txt”
echo “DB_SKIP=$DB_SKIP” | tee -a “$PROBE/direct-probe-info.txt”
dd if=”$TDATA” of=”$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
bs=1 skip=”$DB_SKIP” count=67108864 \
iflag=skip_bytes,count_bytes status=progress
file “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| tee “$PROBE/direct-probe-file.txt”
sha256sum “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| tee “$PROBE/direct-probe-sha256.txt”
strings -a “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| grep -Ei ‘SQL Anywhere|Sybase|facts_neubing|CREATE DATABASE|dba\.|B2|neubing’ \
| head -200 \
| tee “$PROBE/direct-probe-strings.txt”
xxd -l 512 “$PROBE/facts_neubing.db.run0-direct-first64MiB.bin” \
| tee “$PROBE/direct-probe-hex-head.txt”
“`
Then paste:
“`bash
cat “$PROBE/direct-probe-info.txt”
cat “$PROBE/direct-probe-file.txt”
cat “$PROBE/direct-probe-strings.txt”
cat “$PROBE/direct-probe-hex-head.txt”
“`
This is still read-only against Proxmox `TDATA`; the only output goes to the NAS case folder.
## Prompt:
02/06/2026, 17:49:57
The first file is the tail return of the last command. The second is the data we need.U`B2
0MB2j
-,”B2?”
c3b2
R8|o”vjB2
rPJB28
Lfb25
uM b2
-pb2
yb2{
B2&lvvV))u
^b2-
eB2z
bl`b2
@b2Hj2
[^b2^*^
.o3f[pB2/O
lgb2
e[b2
b2
> ib2@t
> lb2″
> TB2I_&hZ
> TZB26`<
> U>b2
> []W7B2
> Bb25Db
> b2zP
> ob2>
> \3b2
> b2/.
> *B2V
> b2zP
> d”b2
> B2Y
> -bash: xxd: command not found
> root@pve:/mnt/pve#
> ###
###
root@pve:/mnt/pve# cat “$PROBE/direct-probe-info.txt”
cat “$PROBE/direct-probe-file.txt”
cat “$PROBE/direct-probe-strings.txt”
cat “$PROBE/direct-probe-hex-head.txt”
DB_LCN=6755031
DB_SKIP=27668606976
/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/facts_neubing.db.run0-direct-first64MiB.bin: data
[g
> ib2@t
> lb2″
> TB2I_&hZ
> TZB26`<
> U>b2
> []W7B2
> Bb25Db
> b2zP
> ob2>
> \3b2
> b2/.
> *B2V
> b2zP
> d”b2
> B2Y
> root@pve:/mnt/pve#
> ###
## Response:
02/06/2026, 17:50:01
> **Evaluating options for VM thin provisioning recovery**
>
> I’m trying to figure out how to map old virtual chunk data from a VM disk set up on LVM with thin provisioning. The current `tmeta` is large, and I suspect there might be old mappings left in unused blocks. I’m considering using specialized tools like `thin_dump`,` thin_delta`, or `thin_ll_dump` to scan for old superblocks.
>
> **Scanning NTFS boot sector for MFT base**
>
> I’m trying to detect the
>
> **Finding NTFS boot sector and partition start**
>
> I need to locate the NTFS boot sector and partition start. The “B2” strings might be from database pages containing “B2,” but without a clear header. I missed the volume’s start offset in earlier calculations. The VM disk’s physical offset should include the partition start, and I need to account for that now.
>
> Thought for 1m 47s
Good catch again. Two things happened:
1. `xxd` simply is not installed. Harmless. Use `od` instead when we need a hex view.
2. The direct probe produced mostly binary/random-looking `B2` fragments and `file` reports only `data`. That means the **naive translation** did not give us a clean SQL Anywhere database header. This does **not** reduce the recovery signal; it only tells us that:
“`text
tdata offset = ntfs_lcn * 4096
“`
is not sufficient.
The missing piece is probably the NTFS volume/partition base and/or the old LVM-thin virtual-to-physical mapping. We now move one rung deeper: find the **old NTFS boot sector** and compare it against the MFT slab we already found.
We know the MFT record for `facts_neubing.db` is record `55826`, and the DB runlist itself is coherent: 27 runs, 4 KiB cluster size, 679,821,312 bytes. `Pasted text.txt`
## Next: scan for NTFS boot sectors and compare them to the MFT anchor
Run this block:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
PROBE=”$OUT/recovery-probes”
mkdir -p “$PROBE”
# MFT anchor from orphan-273272155416-128MiB.bin:
# context center = 273272155416
# context start = center – 67108864
# facts_neubing.db MFT record offset inside context = 67115752
# record number = 55826
ANCHOR_CENTER=273272155416
ANCHOR_CONTEXT_START=$((ANCHOR_CENTER – 67108864))
ANCHOR_RECORD_OFF=67115752
ANCHOR_GLOBAL=$((ANCHOR_CONTEXT_START + ANCHOR_RECORD_OFF))
ANCHOR_RECNO=55826
{
echo “ANCHOR_CENTER=$ANCHOR_CENTER”
echo “ANCHOR_CONTEXT_START=$ANCHOR_CONTEXT_START”
echo “ANCHOR_RECORD_OFF=$ANCHOR_RECORD_OFF”
echo “ANCHOR_GLOBAL=$ANCHOR_GLOBAL”
echo “ANCHOR_RECNO=$ANCHOR_RECNO”
} | tee “$PROBE/mft-anchor-info.txt”
“`
Now scan for NTFS boot-sector markers. This reads `TDATA` only and writes results to NAS:
“`bash
LC_ALL=C grep -aob ‘NTFS ‘ “$TDATA” \
| awk -F: ‘{print ($1-3), “NTFS_BOOT”}’ \
| tee “$PROBE/ntfs-boot-candidates.txt”
wc -l “$PROBE/ntfs-boot-candidates.txt” \
| tee “$PROBE/ntfs-boot-candidates-count.txt”
“`
Now parse and rank the boot sectors by how well their `$MFT` location explains our known MFT record position:
“`bash
cat > “$PROBE/analyze_ntfs_boot_candidates.py” <<'PY'
#!/usr/bin/env python3
import os
import sys
import struct
from pathlib import Path
td = sys.argv[1]
candidates = Path(sys.argv[2])
anchor_global = int(sys.argv[3])
anchor_recno = int(sys.argv[4])
def le16(b, o): return struct.unpack_from("
continue
cluster_size = bps * spc
if clusters_per_record_raw < 0: record_size = 1 << (-clusters_per_record_raw) else: record_size = clusters_per_record_raw * cluster_size if record_size not in (512, 1024, 2048, 4096): continue if mft_lcn <= 0 or total <= 0: continue expected = off + (mft_lcn * cluster_size) + (anchor_recno * record_size) delta = expected - anchor_global print(f"{off}\t{bps}\t{spc}\t{cluster_size}\t{total}\t{mft_lcn}\t{mftmirr_lcn}\t{record_size}\t{expected}\t{anchor_global}\t{abs(delta)}\t{delta}") os.close(fd) PY chmod +x "$PROBE/analyze_ntfs_boot_candidates.py" python3 "$PROBE/analyze_ntfs_boot_candidates.py" \ "$TDATA" \ "$PROBE/ntfs-boot-candidates.txt" \ "$ANCHOR_GLOBAL" \ "$ANCHOR_RECNO" \ > “$PROBE/ntfs-boot-candidate-analysis.tsv”
{
echo “===== NTFS BOOT CANDIDATE COUNT =====”
cat “$PROBE/ntfs-boot-candidates-count.txt”
echo
echo “===== BEST MFT ANCHOR MATCHES =====”
head -1 “$PROBE/ntfs-boot-candidate-analysis.tsv”
tail -n +2 “$PROBE/ntfs-boot-candidate-analysis.tsv” | sort -n -k11,11 | head -40
} | tee “$PROBE/ntfs-boot-candidate-analysis-summary.txt”
“`
Mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Then paste:
“`bash
cat “$PROBE/mft-anchor-info.txt”
cat “$PROBE/ntfs-boot-candidate-analysis-summary.txt”
“`
## Why this is the right next probe
If one NTFS boot sector predicts the MFT record’s physical location with a very small delta, then we have a usable affine map for at least that region, and we can test carving tiny `.LOG` files and then `facts_neubing.db`.
If no boot sector matches closely, then the thin mapping is not linearly recoverable from the boot sector alone, and we pivot to using the MFT runlist plus physical signature/page searches.
Either way, we learned something useful. The direct probe did not fail the recovery; it only eliminated the simplest wrong map.
## Prompt:
02/06/2026, 18:20:00
This is fascinating reasoning you are generating. My compliment to your designers.🎉
###
root@pve:/mnt/pve# cat “$PROBE/mft-anchor-info.txt”
cat “$PROBE/ntfs-boot-candidate-analysis-summary.txt”
ANCHOR_CENTER=273272155416
ANCHOR_CONTEXT_START=273205046552
ANCHOR_RECORD_OFF=67115752
ANCHOR_GLOBAL=273272162304
ANCHOR_RECNO=55826
===== NTFS BOOT CANDIDATE COUNT =====
644 /mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/ntfs-boot-candidates.txt
===== BEST MFT ANCHOR MATCHES =====
boot_offset bytes_per_sector sectors_per_cluster cluster_size total_sectors mft_lcn mftmirr_lcn record_size expected_record_offset anchor_global delta_abs delta_signed
152305664 512 8 4096 1952800760 786432 2 1024 3430696960 273272162304 269841465344 -269841465344
44957696 512 8 4096 4293552127 786432 2 1024 3323348992 273272162304 269948813312 -269948813312
687616 512 8 4096 1953520001 786432 122095000 1024 3279078912 273272162304 269993083392 -269993083392
root@pve:/mnt/pve#
###
## Response:
02/06/2026, 18:20:06
> **Determining database file reconstruction strategy**
>
> I’m thinking about different ways to recover the DB file. It’s tempting to use fragments found in ASCII scans of `tdata`, but the DB might have table or view strings rather than filenames. I could try scanning for SQL page markers and possibly use repair tools. Still need to respond to the user.
>
> **Classifying boot sector candidates for 2TB virtual disk recovery**
>
> I’m working through boot sector candidates for a 2TB disk and checking if the offsets match with the expected sizes (2TB or 1TB). There seems to be a candidate with boot offset 44.9MB that could be either a current or orphaned disk. I’ll need to classify these to find the correct one for recovery.
>
> **Classifying boot sectors and virtual disk mapping**
>
> The MFT record seems to be orphaned, so I need to fix the boot sector, possibly located within the orphaned data
>
> **Extracting candidate logs from MFT and tdata**
>
> I’m considering extracting candidate transaction log files from the MFT and tdata. Instead of directly mapping LCN, I could focus on the MFT’s file layout, looking for potential tiny log files by scanning for headers or names of transaction logs. This seems like a more practical approach for the next step.
>
> **Locating the SQL Anywhere transaction logs**
>
> I’m thinking the rotated logs might have database-specific identifiers, like “SQL Anywhere” or the magic string “SQLANY” in the headers. I could scan tdata for these strings and refine the search by focusing on file contents. Also, exploring whether checksums or entropy analysis could help reconstruct data blocks might reveal useful patterns, like compressed database pages.
>
> Thought for 1m 46s
Thank you – and yes, this is exactly the kind of layered inference that makes the case fascinating.
The new boot-sector result tells us something important: **the old NTFS volume layout is not linearly present in `tdata` order**. The best candidate boot sectors predict the `facts_neubing.db` MFT record around ~3.3-3.4 GB, while the actual orphan MFT record sits around **273.27 GB** in `tdata`. That huge delta means the direct map is false:
“`bash
tdata_offset = ntfs_virtual_offset
“`
So the failed direct probe is not discouraging. It simply proves that we must recover or infer the old thin mapping, or carve by signatures/pages. The good news remains: we have the real NTFS MFT record for `facts_neubing.db`, its full 27-run NTFS runlist, 4 KiB cluster size, and the sibling log records under the same parent directory. `Pasted text.txt`
Your NAS-hosted test-disk idea is exactly what we should do once we have a plausible candidate. For now, one more calibration step.
## Next: classify the NTFS boot candidates
This tells us whether the boot sectors we found are current-live or orphan/unmapped.
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PROBE=”$OUT/recovery-probes”
python3 “$OUT/classify_hits_by_current_thinmap.py” \
“$OUT/current-thin-metadata.xml” \
“$PROBE/ntfs-boot-candidates.txt”
BOOTCLS=”$PROBE/ntfs-boot-candidates.txt.classified.tsv”
awk -F’\t’ ‘
FNR==NR {
if (NR>1) cls[$1]=$3
next
}
FNR==1 {
print $0 “\tclassification”
next
}
{
print $0 “\t” (cls[$1] ? cls[$1] : “UNKNOWN”)
}
‘ “$BOOTCLS” “$PROBE/ntfs-boot-candidate-analysis.tsv” \
> “$PROBE/ntfs-boot-candidate-analysis.classified.tsv”
{
echo “===== BOOT CLASSIFICATION COUNTS =====”
cut -f13 “$PROBE/ntfs-boot-candidate-analysis.classified.tsv” | sort | uniq -c
echo
echo “===== BEST ORPHAN/UNMAPPED BOOT CANDIDATES =====”
head -1 “$PROBE/ntfs-boot-candidate-analysis.classified.tsv”
tail -n +2 “$PROBE/ntfs-boot-candidate-analysis.classified.tsv” |
awk -F’\t’ ‘$13==”ORPHAN_OR_UNMAPPED”‘ |
sort -n -k11,11 |
head -40
echo
echo “===== BEST 2T-ish BOOT CANDIDATES =====”
head -1 “$PROBE/ntfs-boot-candidate-analysis.classified.tsv”
tail -n +2 “$PROBE/ntfs-boot-candidate-analysis.classified.tsv” |
awk -F’\t’ ‘$5 > 3900000000 && $5 < 4400000000' |
sort -n -k11,11 |
head -40
} | tee "$PROBE/ntfs-boot-candidate-analysis-classified-summary.txt"
```
Then mirror and paste:
```bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH --info=progress2 "$OUT/" "$MIRROR/"
cat "$PROBE/ntfs-boot-candidate-analysis-classified-summary.txt"
```
## Small calibration probe: one tiny log file
After that summary, test a tiny sibling log using its MFT runlist. This is still only reading `TDATA` and writing to NAS.
```bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1_tdata
PROBE="$OUT/recovery-probes"
mkdir -p "$PROBE/tiny-log-probes"
# 260516AA.LOG according to MFT:
# data_real_size = 8192
# runs: LCN 1387959 length 1, LCN 1013762 length 1
# direct hypothesis test only
LOG1_LCN=1387959
LOG2_LCN=1013762
dd if="$TDATA" of="$PROBE/tiny-log-probes/260516AA.LOG.part1.direct.bin" \
bs=1 skip=$((LOG1_LCN * 4096)) count=4096 \
iflag=skip_bytes,count_bytes status=progress
dd if="$TDATA" of="$PROBE/tiny-log-probes/260516AA.LOG.part2.direct.bin" \
bs=1 skip=$((LOG2_LCN * 4096)) count=4096 \
iflag=skip_bytes,count_bytes status=progress
cat "$PROBE/tiny-log-probes/260516AA.LOG.part1.direct.bin" \
"$PROBE/tiny-log-probes/260516AA.LOG.part2.direct.bin" \
> “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin”
file “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin” \
| tee “$PROBE/tiny-log-probes/260516AA.LOG.direct-file.txt”
od -Ax -tx1 -N 512 “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin” \
| tee “$PROBE/tiny-log-probes/260516AA.LOG.direct-hex-head.txt”
strings -a “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin” \
| head -100 \
| tee “$PROBE/tiny-log-probes/260516AA.LOG.direct-strings.txt”
“`
Then paste:
“`bash
cat “$PROBE/tiny-log-probes/260516AA.LOG.direct-file.txt”
cat “$PROBE/tiny-log-probes/260516AA.LOG.direct-hex-head.txt”
cat “$PROBE/tiny-log-probes/260516AA.LOG.direct-strings.txt”
“`
If this tiny log also looks wrong, we fully abandon direct LCN translation and move to inference/carving from orphan physical blocks. If it looks like a SQL Anywhere log fragment, we have a bridge.
## Prompt:
02/06/2026, 18:58:53
I am going to #comment at the top of my returns now. This was useful in the past.
###
# Small calibration probe
root@pve:/mnt/pve# MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
cat “$PROBE/ntfs-boot-candidate-analysis-classified-summary.txt”
4,357 0% 0.99kB/s 0:00:03 (xfr#3, to-chk=0/76)
===== BOOT CLASSIFICATION COUNTS =====
1 classification
1 CURRENT_dev_id_4_vm-101-disk-0
1 CURRENT_dev_id_5_vm-101-disk-1
1 CURRENT_dev_id_7_vm-100-disk-1
===== BEST ORPHAN/UNMAPPED BOOT CANDIDATES =====
boot_offset bytes_per_sector sectors_per_cluster cluster_size total_sectors mft_lcn mftmirr_lcn record_size expected_record_offset anchor_global delta_abs delta_signed classification
===== BEST 2T-ish BOOT CANDIDATES =====
boot_offset bytes_per_sector sectors_per_cluster cluster_size total_sectors mft_lcn mftmirr_lcn record_size expected_record_offset anchor_global delta_abs delta_signed classification
44957696 512 8 4096 4293552127 786432 2 1024 3323348992 273272162304 269948813312 -269948813312 CURRENT_dev_id_7_vm-100-disk-1
root@pve:/mnt/pve#
###
###
root@pve:/mnt/pve# # Summary (test a tiny sibling)
root@pve:/mnt/pve# OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
PROBE=”$OUT/recovery-probes”
mkdir -p “$PROBE/tiny-log-probes”
# 260516AA.LOG according to MFT:
# data_real_size = 8192
# runs: LCN 1387959 length 1, LCN 1013762 length 1
# direct hypothesis test only
LOG1_LCN=1387959
LOG2_LCN=1013762
dd if=”$TDATA” of=”$PROBE/tiny-log-probes/260516AA.LOG.part1.direct.bin” \
bs=1 skip=$((LOG1_LCN * 4096)) count=4096 \
iflag=skip_bytes,count_bytes status=progress
dd if=”$TDATA” of=”$PROBE/tiny-log-probes/260516AA.LOG.part2.direct.bin” \
bs=1 skip=$((LOG2_LCN * 4096)) count=4096 \
iflag=skip_bytes,count_bytes status=progress
cat “$PROBE/tiny-log-probes/260516AA.LOG.part1.direct.bin” \
“$PROBE/tiny-log-probes/260516AA.LOG.part2.direct.bin” \
> “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin”
file “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin” \
| tee “$PROBE/tiny-log-probes/260516AA.LOG.direct-file.txt”
od -Ax -tx1 -N 512 “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin” \
| tee “$PROBE/tiny-log-probes/260516AA.LOG.direct-hex-head.txt”
strings -a “$PROBE/tiny-log-probes/260516AA.LOG.direct-candidate.bin” \
| head -100 \
| tee “$PROBE/tiny-log-probes/260516AA.LOG.direct-strings.txt”
4096+0 records in
4096+0 records out
4096 bytes (4.1 kB, 4.0 KiB) copied, 0.0142062 s, 288 kB/s
4096+0 records in
4096+0 records out
4096 bytes (4.1 kB, 4.0 KiB) copied, 0.0143978 s, 284 kB/s
/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/tiny-log-probes/260516AA.LOG.direct-candidate.bin: data
000000 a4 80 44 9c c6 ab 47 fb 63 5e a3 f9 70 28 31 f0
000010 68 9e f7 99 4a e5 11 7b 05 4f fc 5b b8 06 b0 25
000020 3a 23 2c 11 51 aa 66 68 07 4c 71 33 83 e9 1f e2
000030 04 a8 15 1c 26 4a 55 db 92 04 16 6c 00 f4 4a d9
000040 82 de 67 5b 33 98 3e 66 b1 a2 94 c9 00 32 f0 dc
000050 52 b4 1e 87 d9 7c 79 0d e6 6b ff 07 6c 85 f2 58
000060 ab 6f 2d c0 7a 0d a4 7c 6b e4 4c ea df cd 03 25
000070 3c e6 05 26 29 33 35 fb 93 67 b0 3f f3 dd 08 96
000080 08 e7 2e b5 93 91 89 9e 5d aa c8 d8 a6 92 58 0d
000090 ec 0a d5 0b 1e a5 cd 11 ab 81 3b 17 a1 60 79 2c
0000a0 18 2f 24 55 99 27 ad 0d d0 91 a9 91 cb 53 5e b2
0000b0 33 bb f4 fe cf 15 b1 48 f5 e7 07 76 79 c2 44 3b
0000c0 14 8b 1d 1c ce 92 ac c6 d8 8f 59 c5 96 09 4e 2c
0000d0 ab 70 45 d0 18 df ab a6 38 99 b5 d2 67 a1 ac da
0000e0 67 e7 60 25 7c 88 aa f6 43 9c 9e ac da bd 9d 4e
0000f0 47 45 64 cb fb ab e2 b2 91 08 1b 17 5c b3 b7 03
000100 42 f1 fa fd 52 2b 0b 72 62 76 49 f9 b5 85 eb 55
000110 71 e1 44 b9 bd f1 fd 8a 5b 90 c3 1c e7 94 6a 4d
000120 87 40 39 32 5e fc 88 bf 5c fb da be 03 99 fe 2f
000130 61 55 da 92 47 e7 34 d8 bc 0b d3 43 93 e0 5e 17
000140 78 90 5b 44 2b a7 ac 51 7a 49 b8 b8 c5 59 74 d3
000150 1b a2 87 34 31 81 b9 a7 e3 24 82 67 02 c8 00 7f
000160 f0 f4 12 4f 3e 15 e6 6b 71 9d ae 35 22 e9 5e ae
000170 35 13 63 39 de dc 25 e4 39 0a b3 32 8f eb b3 32
000180 8f f3 ac 0c fe e2 36 a5 c1 c0 90 a9 1b 2e 15 27
000190 79 4d 59 56 ae 3f 9e f1 20 e1 c4 9e 7c cf 34 3c
0001a0 d6 e6 90 66 7e d0 63 2d 7e 99 94 5d 8e 22 b2 60
0001b0 52 c4 60 92 f6 8c 28 ed 1a ee 38 dd ff 67 89 da
0001c0 d7 92 61 f7 40 98 7b 33 71 4e 83 b9 c4 a9 7a 12
0001d0 c3 b4 67 27 25 67 9d 44 bc de fe 2b 49 c0 3c 35
0001e0 f7 c3 bf 83 52 22 e9 4e 2d c6 e4 28 95 a8 19 cd
0001f0 22 65 fe 89 e3 8a 79 e1 31 41 0d e8 c1 01 ad e8
000200
%:#,
&)35
NGEd
rbvI
@92^
‘yMYV
{3qN
g’%g
FC?_3
B;C/
CMq2k%e
“+C_
p#+.
e~/,
h:5c|,|
2″u’
Ke$0
uas&
j/”)#
(uo+
m%uw[
_x;T
*u=)u
1VRO
]{|T
VTTZ
l XG
o`\0
%K+%.
RZ7$J+
XH7?
BZ@.gC
}Gm=
FewK
juSU
J:_(s
0qCk
;8Y)
BI8yJ
Ub>>
-K&bw
7;x8Axx
NWao
{t:g
J_
-K&bw
7;x8Axx
NWao
{t:g
J_
>
> It seems the user pasted the content directly, not uploaded a file, so no need for a file_search citation. Since this is pasted information, we won’t reference a file unless it’s necessary, especially as there’s no file ID here. For the next step, we’ll focus on NTFS mapping and consider recovery options.
>
> **Planning approach for NTFS clusters and database pages**
>
> I’m thinking about using MFT records and data runs to find physical locations for file contents by translating NTFS LCN. Scanning for SQL Anywhere page signatures could work, but I need to verify the DB file header to match. Otherwise, I could stick with existing data and focus on old physical blocks with LVM thin mapping.
>
> **Mapping virtual clusters and scanning for DB file locations**
>
> I’m considering whether I can map blocks around the MFT region, using physical offset around 273272 for old NTFS clusters. Based on that, the virtual offset might be 27.668GB for the DB file. I could search the physical tdata for specific database page strings like “SQL Anywhere,” “Sybase,” or similar metadata.
>
> **Reconstructing the database through physical data**
>
> I need to reconstruct the SQL Anywhere database. I’m considering scanning for the “SQL Anywhere” header in the tdata to locate the starting point of the database, though it’s likely binary with little string data. It could be better to bulk extract based on physical proximity around orphaned MFT contexts and search for SQL Anywhere page structures in the tdata.
>
> **Next actionable steps in data extraction**
>
> I can’t extract by LCN but seeing dbremote logs mention renamed files in physical chunks suggests they might be part of the context, though not data itself. The next step might be to build a sparse candidate image using orphan contexts. I could try tools like binwalk or photorec, or even use Python to reconstruct an NTFS MFT view.
>
> **Recovering old LVM metadata and thin mappings**
>
> I’m considering scanning tdata and specifically looking for the string “facts_neubing.db” to pinpoint relevant MFT entries. But old thin mappings might not be directly recoverable from MFT alone. I could try to recover old mappings from LVM thin metadata snapshots, though it’s unclear if they contain old data, as those may be overwritten by newer transaction roots.
>
> **Examining thin metadata for old transaction roots**
>
> It seems like I could try working with a read-only copy of the TMETA file and search for any old roots. The challenge is that older transactions could have been overwritten, and tools aren’t built to traverse these unless I know the old superblock. There’s potential to find stale metadata blocks if I can locate older snapshots from transaction 11.
>
> **Exploring possible next steps with stale TMETA**
>
> It seems like the old dev_id 6 isn’t available, but the raw TMETA might still
>
> **Investigating NTFS volume and possible recovery methods**
>
> I’m looking at the NTFS volume starting at a virtual offset. The MFT mapping places some data around the 3.278GB mark. Next, old thin metadata might help map the DB run LCN to physical blocks. I could try searching the tdata for relevant MFT records, but will need mappings for data recovery. An alternative could be reconstructing an NTFS volume with fragments at those virtual offsets, though the data content still needs to be located.
>
> **Exploring recovery process using database logs**
>
> I’m considering using database transaction logs from orphan contexts, where I’ve found text lines from `dbremote.log`. The actual database files might be binary
>
> **Verifying SQL Anywhere DB recovery through Proxmox and MFT**
>
> First, I’m thinking about using the SQL Anywhere database’s header signature to search tdata. I can ask for help from the user to run PowerShell on their Windows server to grab header info from a known .db file. If that’s not possible, I might go back to Proxmox and check MFT for direct file recovery by LCN.
>
> Thought for 1m 51s
The `#comment` convention is excellent. It gives each return a name and keeps our steps aligned.
This return cleanly eliminates another false path:
“`text
direct NTFS LCN -> tdata offset translation is false
“`
Both the database first-run probe and the tiny `260516AA.LOG` probe produced random-looking binary, not a recognizable SQL Anywhere database/log. Also, the only valid NTFS boot candidates classified into current live devices, with **no orphan/unmapped boot candidate**. So we should **stop direct-LCN extraction now**. It did its job: it told us what not to trust.
The recovery signal remains strong: we still have the real MFT record and runlist for `facts_neubing.db`, size **679,821,312 bytes**, plus many recent sibling log records under parent `55824`. `Pasted text.txt`
Your NAS test-disk idea is right, but first we need the old thin map or an alternate page/signature map. The next best non-destructive rung is **thin metadata preservation and tool inventory**.
## Next step: preserve `_tmeta` to NAS
Keep the VMs stopped while this runs.
“`bash
# Preserve current thin metadata substrate for offline analysis
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
META=”$OUT/thin-metadata-lab”
mkdir -p “$META”
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
{
date
hostname
echo “TMETA=$TMETA”
blockdev –getsize64 “$TMETA”
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1
qm list
} | tee “$META/tmeta-preservation-info.txt”
“`
Now copy the metadata LV to NAS:
“`bash
dd if=”$TMETA” of=”$META/local-lvm-nvme0n1_tmeta.raw” \
bs=16M iflag=fullblock conv=noerror,sync status=progress
sha256sum “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/local-lvm-nvme0n1_tmeta.raw.sha256”
“`
Then run sanity checks from the NAS copy:
“`bash
thin_check “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/thin_check_tmeta_copy.txt”
thin_dump “$META/local-lvm-nvme0n1_tmeta.raw” \
> “$META/thin_dump_tmeta_copy.xml”
grep -E ‘
done
} | tee “$TOOLINFO”
“`
Paste:
“`bash
cat “$TOOLINFO”
“`
## Why this rung matters
We already have the NTFS file recipe. What we lack is the old LVM-thin translation layer. The current metadata no longer references the deleted disk, but stale mapping structures may still exist inside `_tmeta`. If we can recover enough of the old `device_id=6` mapping, the `facts_neubing.db` runlist becomes actionable.
If that does not yield a map, we pivot to SQL Anywhere page/signature carving and build a NAS-hosted test disk/candidate recovery area. The work remains non-destructive: Proxmox is read-only source, NAS is the lab.
## Prompt:
02/06/2026, 19:41:09
The browser timed out. I need the environment variables again.
###
Linux pve 6.5.11-8-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.11-8 (2024-01-30T12:27Z) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue Jun 2 09:20:40 CEST 2026 on pts/0
root@pve:~# dd if=”$TMETA” of=”$META/local-lvm-nvme0n1_tmeta.raw” \
bs=16M iflag=fullblock conv=noerror,sync status=progress
sha256sum “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/local-lvm-nvme0n1_tmeta.raw.sha256″
dd: failed to open ”: No such file or directory
sha256sum: /local-lvm-nvme0n1_tmeta.raw: No such file or directory
root@pve:~#
###
## Response:
02/06/2026, 19:41:12
Yes — new shell, empty variables. Rehydrate them like this:
“`bash
# Rehydrate forensic environment after shell/browser timeout
if [ -f /tmp/latest-b2-facts-forensic-dir.txt ]; then
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
else
OUT=$(ls -td /mnt/pve/MYCLOUD-310867/b2-facts-forensic-* | head -1)
echo “$OUT” > /tmp/latest-b2-facts-forensic-dir.txt
fi
if [ -f /tmp/latest-b2-facts-forensic-mirror-dir.txt ]; then
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
else
CASE=$(basename “$OUT”)
MIRROR=”/mnt/pve/MYCLOUD-159/$CASE”
echo “$MIRROR” > /tmp/latest-b2-facts-forensic-mirror-dir.txt
fi
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
PROBE=”$OUT/recovery-probes”
META=”$OUT/thin-metadata-lab”
mkdir -p “$OUT” “$MIRROR” “$PROBE” “$META”
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
echo “TDATA=$TDATA”
echo “TMETA=$TMETA”
echo “POOL=$POOL”
echo “PROBE=$PROBE”
echo “META=$META”
df -h “$OUT” “$MIRROR”
ls -l “$TDATA” “$TMETA” “$POOL”
“`
Then resume the metadata preservation:
“`bash
dd if=”$TMETA” of=”$META/local-lvm-nvme0n1_tmeta.raw” \
bs=16M iflag=fullblock conv=noerror,sync status=progress
sha256sum “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/local-lvm-nvme0n1_tmeta.raw.sha256”
“`
Then continue:
“`bash
thin_check “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/thin_check_tmeta_copy.txt”
thin_dump “$META/local-lvm-nvme0n1_tmeta.raw” \
> “$META/thin_dump_tmeta_copy.xml”
grep -E ‘
>
> The user asks if a comprehensive summary is needed or if memory should be relieved. A summary seems like the right move, focusing on the current context. No memory saving is requested, and no prior file references are necessary. I’ll aim for a thorough but concise summary without additional citations unless relevant context from uploaded files is used.
>
> **Deciding on citations for uploaded files**
>
> The user hasn’t specifically requested references from uploaded files, so citations might not be needed. If I did reference specific evidence from the files, I would include proper citation, but I’m unsure if the current context calls for that. Since the user hasn’t mentioned it, I can likely avoid adding citations.
>
> **Considering file citations for the summary**
>
> The user asked for a summary, and while I have snippets from the search results, I can’t get line citations directly. I could potentially retrieve line ranges by clicking on the relevant files. However, the user hasn’t specifically requested that level of detail, so I might not need to overcomplicate things.
>
> **Providing a concise summary without citations**
>
> I’ll provide the user with a concise but comprehensive summary. Since the user didn’t request specific citations, I can cite the file without needing line numbers. Although the system mentions line ranges, I’ll follow the format used previously and share the summary in a way they can copy easily.
>
> **Crafting a comprehensive checkpoint summary**
>
> I’ll create a summary that includes the current state, critical facts, variables, and what’s ruled out. I’ll note running or waiting processes and next steps. The summary will remain moderately detailed but in a technical structure—nothing too verbose. I’ll also include references to evidence like logs, db records, and current command states.
>
> Thought for 26s
Yes. I’ll compress the working state into a durable checkpoint. This is enough for me to re-enter the work cleanly even if the browser/session loses context.
## Recovery checkpoint – B2 / FACTS / `facts_neubing`
### Situation
We are working on Proxmox host `pve`, recovering data from a deleted/missing LVM-thin VM disk. The target is the customer’s B2 / FACTS SQL Anywhere environment.
Critical operational paths discovered:
“`text
E:\B2\DB\
E:\B2\DB\facts_neubing.db
E:\B2\DB\facts_neubing.log
E:\B2\Log\dbremote.log
E:\B2\FACTS\
E:\B2\sqlremote\
“`
The SQL Anywhere identity is:
“`text
EngineName / eng: neubing_12
DatabaseName / dbn: facts_neubing
Service/identity: SQLANYs_FACTS_Neubing
“`
We have strong orphan/unmapped evidence for transaction-log activity under `E:\B2\DB\`, including repeated `facts_neubing.log` entries and rotated logs. The context grep shows `E:/B2/DB/facts_neubing.log` and transaction processing from `E:\B2\DB\` across multiple dates, including 2024 and 2025 traces. `Pasted text.txt`
### Current forensic case directory
“`bash
OUT=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925
MIRROR=/mnt/pve/MYCLOUD-159/b2-facts-forensic-2026-06-02-0925
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
PROBE=$OUT/recovery-probes
META=$OUT/thin-metadata-lab
“`
Rehydrate block after timeout:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt 2>/dev/null || ls -td /mnt/pve/MYCLOUD-310867/b2-facts-forensic-* | head -1)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt 2>/dev/null || echo “/mnt/pve/MYCLOUD-159/$(basename “$OUT”)”)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
PROBE=”$OUT/recovery-probes”
META=”$OUT/thin-metadata-lab”
mkdir -p “$PROBE” “$META” “$MIRROR”
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
echo “TDATA=$TDATA”
echo “TMETA=$TMETA”
echo “POOL=$POOL”
echo “PROBE=$PROBE”
echo “META=$META”
“`
### Confirmed findings
We found an NTFS MFT record for the target file:
“`text
record_no: 55826
name: facts_neubing.db
parent_ref: 55824
data_real_size: 679,821,312 bytes
cluster size: 4096
run_count: 27
total_run_clusters: 165,972
“`
The same parent reference `55824` contains many sibling rotated logs such as:
“`text
260516AA.LOG
260516AB.LOG
260516AC.LOG
260518AF.LOG
260518AG.LOG
260520AA.LOG
260520AB.LOG
260520AC.LOG
260520AD.LOG
260520AE.LOG
260520AF.LOG
260520AG.LOG
“`
The manifest confirms `facts_neubing.db` and many recent-looking rotated log records under parent `55824`, strongly indicating this parent is `E:\B2\DB\`. `Pasted text.txt`
The full runlist confirms `facts_neubing.db` has 27 NTFS runs. The first run is huge:
“`text
run 0:
file_vcn: 0
ntfs_lcn: 6755031
clusters: 160551
bytes: 657,616,896
“`
This means most of the database was contiguous at the NTFS level, but that does **not** mean it is contiguous or linearly placed in LVM-thin `tdata`. `Pasted text.txt`
### What we ruled out
Direct translation is false:
“`text
tdata byte offset = ntfs_lcn * 4096
“`
Both the direct probe of `facts_neubing.db` run 0 and the tiny `260516AA.LOG` probe produced random-looking binary, not recognizable SQL Anywhere content. So we must not use NTFS LCNs directly as `tdata` offsets.
NTFS boot-sector analysis also did not yield a useful orphan/unmapped volume map. The best 2T-ish boot candidate classified as current `vm-100-disk-1`, not the deleted/orphan disk.
### Current active path
We pivoted to preserving and analyzing LVM-thin metadata:
“`bash
dd if=”$TMETA” of=”$META/local-lvm-nvme0n1_tmeta.raw” \
bs=16M iflag=fullblock conv=noerror,sync status=progress
sha256sum “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/local-lvm-nvme0n1_tmeta.raw.sha256”
“`
After that finishes, next commands are:
“`bash
thin_check “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/thin_check_tmeta_copy.txt”
thin_dump “$META/local-lvm-nvme0n1_tmeta.raw” \
> “$META/thin_dump_tmeta_copy.xml”
grep -E ‘
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta -> ../dm-4
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool -> ../dm-7
root@pve:~# dd if=”$TMETA” of=”$META/local-lvm-nvme0n1_tmeta.raw” \
bs=16M iflag=fullblock conv=noerror,sync status=progress
sha256sum “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/local-lvm-nvme0n1_tmeta.raw.sha256”
17062428672 bytes (17 GB, 16 GiB) copied, 971 s, 17.6 MB/s
###
## Response:
02/06/2026, 20:05:30
> **Advising on dd progress and checksum potential hang**
>
> It looks like the dd process is copying files at a slow rate and might take a bit longer to complete. The progress seems stuck just short of the expected size. After dd finishes, the checksum process for 17GB might take a while. My advice is to avoid interrupting it, and if needed, check the process with commands like ps or lsof in another shell to monitor its state.
>
> Thought for 12s
It likely is **not hung**.
That number is the clue:
“`text
17062428672 bytes copied
“`
That is essentially the full `_tmeta` size. So `dd` has probably finished or is flushing the final CIFS write, and then the shell proceeds to:
“`bash
sha256sum “$META/local-lvm-nvme0n1_tmeta.raw”
“`
`sha256sum` is silent while it reads the entire 16 GiB file back from the NAS. At ~17 MB/s, that alone can look “frozen” for another ~15–20 minutes.
In a second shell, run only this observer block:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt 2>/dev/null || ls -td /mnt/pve/MYCLOUD-310867/b2-facts-forensic-* | head -1)
META=”$OUT/thin-metadata-lab”
echo “META=$META”
date
ps -eo pid,stat,etime,pcpu,pmem,wchan:24,cmd | egrep ‘dd|sha256sum|tee|thin_’ | grep -v egrep
ls -lh “$META/local-lvm-nvme0n1_tmeta.raw” “$META/local-lvm-nvme0n1_tmeta.raw.sha256” 2>/dev/null || true
“`
Interpretation:
“`text
dd present still copying/flushing
sha256sum present copy likely complete; checksum is running silently
neither present command likely finished, shell/browser just did not update
“`
If `sha256sum` is running, let it finish. If you need to stop it, `Ctrl-C` would only interrupt the checksum stage; the raw metadata copy should already be present. But I would let it complete, because that SHA256 is our integrity anchor.
Once the prompt returns, continue with:
“`bash
thin_check “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/thin_check_tmeta_copy.txt”
thin_dump “$META/local-lvm-nvme0n1_tmeta.raw” \
> “$META/thin_dump_tmeta_copy.xml”
grep -E ‘
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta -> ../dm-4
lrwxrwxrwx 1 root root 7 May 31 12:20 /dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool -> ../dm-7
root@pve:~# dd if=”$TMETA” of=”$META/local-lvm-nvme0n1_tmeta.raw” \
bs=16M iflag=fullblock conv=noerror,sync status=progress
sha256sum “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/local-lvm-nvme0n1_tmeta.raw.sha256”
17062428672 bytes (17 GB, 16 GiB) copied, 971 s, 17.6 MB/s
1016+1 records in
1017+0 records out
17062428672 bytes (17 GB, 16 GiB) copied, 1441.79 s, 11.8 MB/s
52ec682742d316035a3079eecb8215fed3ed183f98a6970d8945e7b157abe527 /mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/local-lvm-nvme0n1_tmeta.raw
root@pve:~# thin_check “$META/local-lvm-nvme0n1_tmeta.raw” \
| tee “$META/thin_check_tmeta_copy.txt”
thin_dump “$META/local-lvm-nvme0n1_tmeta.raw” \
> “$META/thin_dump_tmeta_copy.xml”
grep -E ‘
root@pve:~#
###
## Response:
02/06/2026, 20:12:51
> **Exploring thin volume metadata recovery**
>
> I’m considering using current metadata and archive data to restore the thin volume mappings. The old volume device id and transaction info might be needed, but older thin metadata might not be straightforward to access. I’ll need to explore options like using transactional snapshots or a forensic scanner for B-tree nodes to gather the data more effectively.
>
> **Evaluating metadata and thin provisioning method**
>
> I’m thinking about the format and whether I should dive into the thin-provisioning-tools docs — but I’m not sure if I need to rely on web resources just yet. Maybe I don’t need them? Still, exploring tools like `thin_rmap` could help reverse map physical blocks. I’ll
>
> **Analyzing MFT record structure and location**
>
> I’m examining the NTFS MFT record structure, with records starting around LCN 786432. If we can find the MFT runlist and record offsets, there’s a chance of calculating the virtual LCN for the MFT record. The records seem to be consecutive at 1024 bytes, so I’ll need to verify the exact offset and position for proper reconstruction.
>
> **Mapping old thin volume blocks to physical blocks**
>
> I’m trying to derive the mapping from old thin virtual blocks to physical blocks by analyzing the NTFS MFT cluster. If we know the virtual volume position of the MFT cluster, we can calculate the correct mapping. Still, if the old volume matches the current one, the mapping should be consistent
>
> **Clarifying calculation and metadata parsing**
>
> I’m trying to figure out if I can infer the thin block from boot or MFT data. If there’s a stale mapping node, I might be able to parse it, but I definitely need to tackle the metadata parsing first. I might try calculating the physical data block for confirmation, maybe using Python for the analysis.
>
> **Calculating physical data block number**
>
> **Searching thin block and metadata in tmeta**
>
> I’m looking to locate the physical thin block (4169802) in the raw tmeta, possibly using little-endian 64-bit encoding. The goal is to find these blocks within mapping entries and match them with the MFT record information. I’ll need careful checks around orphan contexts and nearby structures, possibly with a custom scanner for searching raw metadata.
>
> Thought for 54s
Excellent. The metadata copy is now preserved and integrity-anchored:
“`text
_tmeta raw copy: 17,062,428,672 bytes
SHA256: 52ec682742d316035a3079eecb8215fed3ed183f98a6970d8945e7b157abe527
thin_check: clean enough to examine superblock, devices tree, mapping tree, and space-map counts
transaction: 21
“`
The logical `thin_dump` confirms only the **current** devices `4–8`; the old deleted mapping is not reachable through the active metadata tree. That was expected, but now we have the raw metadata substrate safely on NAS.
The next move is not another active `thin_dump`; it is **raw metadata archaeology** on the NAS copy. We know an orphan physical `tdata` location that contains the real `facts_neubing.db` MFT record:
“`text
MFT record global tdata byte offset: 273272162304
thin data block size: 65536 bytes
physical thin data block: 4169802
offset inside block: 18432
“`
If stale thin mappings survive in `_tmeta.raw`, they may contain references to physical data block `4169802`. Let’s search the NAS metadata copy for that and neighboring orphan blocks.
Run this:
“`bash
# Raw _tmeta archaeology: search for known orphan physical data blocks
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
ARCH=”$META/raw-metadata-archaeology”
mkdir -p “$ARCH”
cat > “$ARCH/search_tmeta_values.py” <<'PY'
#!/usr/bin/env python3
import sys
import struct
from pathlib import Path
path = Path(sys.argv[1])
values = [int(x) for x in sys.argv[2:]]
patterns = []
for v in values:
patterns.append((v, "le32", struct.pack("
counts[(v, kind)] += 1
print(f”{off}\t{v}\t{kind}”)
pos = i + 1
prev_tail = data[-overlap:]
base += len(chunk)
print(“===== COUNTS =====”, file=sys.stderr)
for (v, kind), c in sorted(counts.items()):
print(f”{v}\t{kind}\t{c}”, file=sys.stderr)
PY
chmod +x “$ARCH/search_tmeta_values.py”
# Known physical tdata block for facts_neubing.db MFT record and nearby blocks
python3 “$ARCH/search_tmeta_values.py” “$TMETA_RAW” \
4169800 4169801 4169802 4169803 4169804 \
> “$ARCH/tmeta-known-orphan-block-hits.tsv” \
2> “$ARCH/tmeta-known-orphan-block-counts.txt”
“`
Then summarize:
“`bash
{
echo “===== COUNTS =====”
cat “$ARCH/tmeta-known-orphan-block-counts.txt”
echo
echo “===== FIRST HITS =====”
head -100 “$ARCH/tmeta-known-orphan-block-hits.tsv”
echo
echo “===== LAST HITS =====”
tail -100 “$ARCH/tmeta-known-orphan-block-hits.tsv”
echo
echo “===== HIT COUNT =====”
wc -l “$ARCH/tmeta-known-orphan-block-hits.tsv”
} | tee “$ARCH/tmeta-known-orphan-block-summary.txt”
“`
Also inventory the available thin tools:
“`bash
TOOLINFO=”$META/thin-tool-inventory.txt”
{
date
for t in thin_dump thin_check thin_ls thin_rmap thin_delta thin_repair thin_metadata_pack thin_metadata_unpack thin_restore; do
echo
echo “===== $t =====”
command -v “$t” || true
“$t” –help 2>&1 | head -80 || true
done
} | tee “$TOOLINFO”
“`
Mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Paste:
“`bash
cat “$ARCH/tmeta-known-orphan-block-summary.txt”
cat “$TOOLINFO”
“`
What we hope for: at least a few hits for `4169802` or neighbors inside `_tmeta.raw`. If there are hits, we dump surrounding metadata blocks and look for a stale mapping node. If there are no hits, that suggests the active metadata copy no longer contains references to that physical block, and we pivot to database/log page carving from `TDATA`.
## Prompt:
03/06/2026, 05:43:59
We have them!
###
root@pve:~# cat “$ARCH/tmeta-known-orphan-block-summary.txt”
cat “$TOOLINFO”
===== COUNTS =====
===== COUNTS =====
4169800 le32 2
4169800 le64 2
4169801 le32 2
4169801 le64 2
4169802 le32 2
4169802 le64 2
4169803 le32 2
4169803 le64 2
4169804 le32 2
4169804 le64 2
===== FIRST HITS =====
55899784 4169800 le32
55899784 4169800 le64
55899792 4169801 le32
55899792 4169801 le64
55899800 4169802 le32
55899800 4169802 le64
55899808 4169803 le32
55899808 4169803 le64
55899816 4169804 le32
55899816 4169804 le64
1182910819 4169800 le32
1182910819 4169800 le64
1182910827 4169801 le32
1182910827 4169801 le64
1991387355 4169802 le32
1991387355 4169802 le64
1991387363 4169803 le32
1991387363 4169803 le64
1991387371 4169804 le32
1991387371 4169804 le64
===== LAST HITS =====
55899784 4169800 le32
55899784 4169800 le64
55899792 4169801 le32
55899792 4169801 le64
55899800 4169802 le32
55899800 4169802 le64
55899808 4169803 le32
55899808 4169803 le64
55899816 4169804 le32
55899816 4169804 le64
1182910819 4169800 le32
1182910819 4169800 le64
1182910827 4169801 le32
1182910827 4169801 le64
1991387355 4169802 le32
1991387355 4169802 le64
1991387363 4169803 le32
1991387363 4169803 le64
1991387371 4169804 le32
1991387371 4169804 le64
===== HIT COUNT =====
20 /mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/tmeta-known-orphan-block-hits.tsv
Tue Jun 2 08:48:23 PM CEST 2026
===== thin_dump =====
/usr/sbin/thin_dump
Usage: thin_dump [options] {device|file}
Options:
{-h|–help}
{-f|–format} {xml|human_readable|custom}
{-r|–repair}
{-m|–metadata-snap} [block#]
{-o
{–dev-id}
{–skip-mappings}
{-V|–version}
===== thin_check =====
/usr/sbin/thin_check
Usage: thin_check [options] {device|file}
Options:
{-q|–quiet}
{-h|–help}
{-V|–version}
{-m|–metadata-snap}
{–auto-repair}
{–override-mapping-root}
{–clear-needs-check-flag}
{–ignore-non-fatal-errors}
{–skip-mappings}
{–super-block-only}
===== thin_ls =====
/usr/sbin/thin_ls
Usage: thin_ls [options] {metadata device}
Options:
{-h|–help}
{-m|–metadata-snap}
{–no-headers}
{-o|–format
{-V|–version}
where
DEV
MAPPED_BLOCKS
EXCLUSIVE_BLOCKS
SHARED_BLOCKS
MAPPED_SECTORS
EXCLUSIVE_SECTORS
SHARED_SECTORS
MAPPED_BYTES
EXCLUSIVE_BYTES
SHARED_BYTES
MAPPED
EXCLUSIVE
SHARED
TRANSACTION
CREATE_TIME
SNAP_TIME
===== thin_rmap =====
/usr/sbin/thin_rmap
Usage: thin_rmap [options] {device|file}
Options:
{-h|–help}
{-V|–version}
{–region
Where:
for example 5..45 denotes blocks 5 to 44 inclusive, but not block 45
===== thin_delta =====
/usr/sbin/thin_delta
Usage: thin_delta [options]
Options:
{–thin1, –snap1}
{–thin2, –snap2}
{-m, –metadata-snap} [block#]
{–verbose}
{-h|–help}
{-V|–version}
===== thin_repair =====
/usr/sbin/thin_repair
Usage: thin_repair [options] {device|file}
Options:
{-h|–help}
{-i|–input}
{-o|–output}
===== thin_metadata_pack =====
-bash: thin_metadata_pack: command not found
===== thin_metadata_unpack =====
-bash: thin_metadata_unpack: command not found
===== thin_restore =====
/usr/sbin/thin_restore
Usage: thin_restore [options]
Options:
{-h|–help}
{-i|–input}
{-o|–output}
## Response:
03/06/2026, 05:44:00
> **Explaining tmeta pattern analysis**
>
> The user appears to have found structured patterns within tmeta raw data at certain offsets. We’ll need to investigate the blocks surrounding those offsets, perhaps exploring the metadata btree. If necessary, we can use tools available to check thin_rmap and other related elements. The goal is to clarify these findings for the user.
>
> Thought for 33s
Yes — **we have them**. This is exactly the kind of result we hoped for.
The most important part is this sequence:
“`text
55899784 4169800
55899792 4169801
55899800 4169802
55899808 4169803
55899816 4169804
“`
Those are not random isolated hits. They are **sequential physical thin-data block numbers**, spaced 8 bytes apart, inside `_tmeta.raw`. That strongly suggests we have found a stale metadata structure containing a run of mappings. One of those blocks, `4169802`, is the physical thin-data block containing the `facts_neubing.db` MFT record anchor.
The two later partial sequences are also useful:
“`text
1182910819 4169800
1182910827 4169801
1991387355 4169802
1991387363 4169803
1991387371 4169804
“`
But the first cluster is the cleanest and most likely actionable.
Next we inspect the metadata block containing the first cluster and try to recover the associated **virtual thin block keys**.
## Step 1 — dump context around the metadata hits
Run this:
“`bash
# Inspect raw _tmeta blocks around known physical block hits
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
mkdir -p “$ARCH/hit-contexts”
cat > “$ARCH/known-hit-offsets.txt” <<'EOF' 55899800 1182910819 1991387355 EOF while read OFF; do [ -z "$OFF" ] && continue BLOCK=$((OFF / 4096)) REM=$((OFF % 4096)) START=$((BLOCK * 4096)) echo "OFF=$OFF BLOCK=$BLOCK REM=$REM START=$START" \ | tee "$ARCH/hit-contexts/hit-${OFF}.info.txt" dd if="$TMETA_RAW" of="$ARCH/hit-contexts/tmeta-block-${BLOCK}-hit-${OFF}.bin" \ bs=1 skip="$START" count=4096 \ iflag=skip_bytes,count_bytes status=none od -Ax -tx8 -N 4096 "$ARCH/hit-contexts/tmeta-block-${BLOCK}-hit-${OFF}.bin" \ > “$ARCH/hit-contexts/tmeta-block-${BLOCK}-hit-${OFF}.qwords.txt”
od -Ax -tx1 -N 512 “$ARCH/hit-contexts/tmeta-block-${BLOCK}-hit-${OFF}.bin” \
> “$ARCH/hit-contexts/tmeta-block-${BLOCK}-hit-${OFF}.head512.txt”
done < "$ARCH/known-hit-offsets.txt"
```
Then summarize:
```bash
for f in "$ARCH"/hit-contexts/*.info.txt; do
echo "===== $f ====="
cat "$f"
done
for f in "$ARCH"/hit-contexts/*.qwords.txt; do
echo "===== $f ====="
grep -nE '00000000003f9[0-9a-f]{3}|00000000003fa[0-9a-f]{3}|00000000003f9f4a|00000000003f9f4b|00000000003f9f4c|00000000003f9f4d|00000000003f9f4e' "$f" || true
done
```
## Step 2 — parse candidate metadata nodes
Now run this parser. It will try to infer whether those 4 KiB blocks are thin-metadata btree nodes and print qword neighborhoods around the hits.
```bash
cat > “$ARCH/inspect_tmeta_hit_blocks.py” <<'PY'
#!/usr/bin/env python3
import struct
from pathlib import Path
arch = Path(__import__("sys").argv[1])
def u32(b, o):
return struct.unpack_from("
“`
But direct LCN-to-`tdata` translation failed.
Now `_tmeta.raw` is giving us the missing layer:
“`text
old thin virtual block -> physical tdata block
“`
The clean `4169800, 4169801, 4169802, 4169803, 4169804` sequence is likely part of a mapping leaf. If the same node gives us the corresponding virtual keys, we can begin reconstructing the old thin map around the database/MFT region.
This is the first time we may have both sides of the bridge.
## Prompt:
03/06/2026, 05:48:23
How is this?
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 05:48:31
> **Analyzing metadata structure for btree block**
>
> I need to analyze the uploaded file for metadata. The first block might be a BTree node header with checksum and flags. It seems to include values like block number, entry count, and value size. I’ll keep an eye on the structure and verify the number of entries and other details to proceed.
>
> Thought for 45s
This is **very good**, with one important correction to our interpretation.
We have definitely found a valid-looking thin metadata B-tree leaf. The first hit block is the important one:
“`text
tmeta metadata block: 13647
nr_entries: 248
max_entries: 252
value_size: 8
target qword hits:
+0688: 4169800
+0690: 4169801
+0698: 4169802
+06a0: 4169803
+06a8: 4169804
“`
Those values appear as a clean sequential run inside the metadata node. `Pasted text.txt`
The correction: because of the B-tree node layout, those values are probably **keys**, not values. So we should not yet say “this is the old mapping.” It may be one of these:
“`text
1. a stale mapping leaf where virtual thin-block keys are around 4169802
2. a space-map/refcount leaf tracking physical data blocks
3. another persistent-data B-tree that includes our physical block numbers
“`
The next step is to inspect the **value array** paired with those keys. If the paired values look like physical block/time mappings, we may have the bridge. If they look like refcounts or small integers, it is likely a space-map/reference tree.
Run this next.
“`bash
# Decode B-tree leaf entries around the 4169802 target key
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
cat > “$ARCH/decode_tmeta_btree_leaf.py” <<'PY'
#!/usr/bin/env python3
import struct
import sys
from pathlib import Path
def u32(b, o): return struct.unpack_from("
break
key = u64(data, ko)
if value_size == 8:
val = u64(data, vo)
else:
val = int.from_bytes(data[vo:vo+value_size], “little”, signed=False)
if key in targets or (4169700 <= key <= 4169900): low32 = val & 0xffffffff high32 = (val >> 32) & 0xffffffff
possible_block_low24 = val & ((1 << 24) - 1) possible_time_high40 = val >> 24
possible_time_low24 = val & ((1 << 24) - 1) possible_block_high40 = val >> 24
print(
f”{i}\t{key}\t{val}\t0x{val:016x}\t{low32}\t{high32}\t”
f”{possible_block_low24}\t{possible_time_high40}\t”
f”{possible_block_high40}\t{possible_time_low24}”
)
PY
chmod +x “$ARCH/decode_tmeta_btree_leaf.py”
python3 “$ARCH/decode_tmeta_btree_leaf.py” \
“$ARCH/hit-contexts/tmeta-block-13647-hit-55899800.bin” \
| tee “$ARCH/tmeta-block-13647-decoded.tsv”
“`
Then paste:
“`bash
cat “$ARCH/tmeta-block-13647-decoded.tsv”
“`
Also run this small reverse-map check against the current active metadata copy:
“`bash
# Check whether the current active mapping tree claims these data blocks
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
thin_rmap –region 4169800..4169805 “$TMETA_RAW” \
| tee “$ARCH/current-rmap-4169800-4169805.txt”
cat “$ARCH/current-rmap-4169800-4169805.txt”
“`
What I’m looking for:
“`text
If values are small: probably refcount / space-map.
If values are large block-like numbers: possibly mapping leaf.
If thin_rmap returns nothing: these data blocks are not current-live mapped, consistent with orphan substrate.
“`
Either way, this is not a dead end. We’ve found structured metadata around the exact orphan block. Now we identify what kind of structure it is.
## Prompt:
03/06/2026, 05:51:57
Here are our returns:
###
root@pve:~# # Check whether the current active mapping tree claims these data blocks
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
thin_rmap –region 4169800..4169805 “$TMETA_RAW” \
| tee “$ARCH/current-rmap-4169800-4169805.txt”
cat “$ARCH/current-rmap-4169800-4169805.txt”
root@pve:~#
###
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 05:51:58
> **Interpreting file search results and citing**
>
> I need to continue the answer and reference the uploaded file. File search results didn’t include specific line numbers, but I can still cite the file using a general reference. In the past, I’ve used citations like this before, even without line markers, and it worked. I’ll interpret the returned data and explain it using this approach.
>
> **Interpreting space map B-tree and values**
>
> I’m trying to calculate 4,169,802 and figure out its role in space mapping. It looks like the value might correlate with allocation metadata in a B-tree, with the key being a physical block. The lack of output from the thin_rmap search suggests these aren’t data blocks, but possibly part of space map metadata.
>
> Thought for 55s
This is good – but nuanced in exactly the way we needed to discover.
The empty `thin_rmap –region 4169800..4169805` result is important: the **current active mapping tree does not claim those physical data blocks**. That remains consistent with our `facts_neubing.db` MFT anchor living in orphan/unmapped `tdata` space. The decoded leaf, however, shows `4169802` as a **key**, while its paired value decodes as `value >> 24 = 1795740`, so this block is not yet the old thin map bridge; it is a structured B-tree node that mentions our block number, but possibly as a virtual key, space-map key, or coincidental current/stale mapping key. `Pasted text.txt`
Now we test both interpretations.
## 1. Check whether the paired values are current physical mappings
Run:
“`bash
# Check whether decoded value-high40 blocks are current-live physical mappings
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
thin_rmap –region 1795738..1795762 “$TMETA_RAW” \
| tee “$ARCH/current-rmap-1795738-1795762.txt”
cat “$ARCH/current-rmap-1795738-1795762.txt”
“`
If this returns mappings, then block `13647` is probably an active/current mapping leaf where:
“`text
virtual thin block ~4169802 -> physical thin-data block ~1795740
“`
That would make it interesting but not our old missing map.
## 2. Search `_tmeta.raw` for packed mapping values that point to physical block `4169802`
This is the more important search. In dm-thin mapping leaves, the physical data block is commonly packed into the high 40 bits of an 8-byte value, with transaction/time in the low 24 bits. So the thing we really want is not qword exactly `4169802`, but:
“`text
value >> 24 == 4169802
“`
Run this NAS-only scan:
“`bash
# Search valid-looking tmeta B-tree leaves for values whose high40 bits equal our orphan physical blocks
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
cat > “$ARCH/scan_tmeta_btree_values_for_targets.py” <<'PY'
#!/usr/bin/env python3
import os
import struct
import sys
from pathlib import Path
path = Path(sys.argv[1])
targets = {int(x) for x in sys.argv[2:]}
block_size = 4096
size = path.stat().st_size
total_blocks = size // block_size
def u32(b, o):
return struct.unpack_from("
continue
if max_entries <= 0 or max_entries > 512:
continue
if value_size != 8:
continue
keys_off = 0x20
vals_off = keys_off + max_entries * 8
if vals_off + nr_entries * value_size > block_size:
continue
for i in range(nr_entries):
key = u64(data, keys_off + i * 8)
val = u64(data, vals_off + i * 8)
high40 = val >> 24
low24 = val & 0xFFFFFF
if key in targets:
hk.write(f”{bno}\t{i}\t{key}\t{val}\t0x{val:016x}\t{high40}\t{low24}\n”)
if high40 in targets:
hv.write(f”{bno}\t{i}\t{key}\t{val}\t0x{val:016x}\t{high40}\t{low24}\n”)
if bno % 250000 == 0 and bno:
print(f”scanned_blocks={bno}/{total_blocks}”, file=sys.stderr)
print(out_hits)
print(out_keys)
PY
chmod +x “$ARCH/scan_tmeta_btree_values_for_targets.py”
python3 “$ARCH/scan_tmeta_btree_values_for_targets.py” “$TMETA_RAW” \
4169800 4169801 4169802 4169803 4169804 4169805 \
> “$ARCH/scan-packed-targets-output.txt” \
2> “$ARCH/scan-packed-targets-progress.txt”
“`
Then summarize:
“`bash
PACKED=”$TMETA_RAW.target-packed-value-hits.tsv”
KEYS=”$TMETA_RAW.target-key-hits.tsv”
{
echo “===== PACKED VALUE HITS: value >> 24 == target physical block =====”
wc -l “$PACKED”
head -100 “$PACKED”
tail -100 “$PACKED”
echo
echo “===== KEY HITS: key == target block =====”
wc -l “$KEYS”
head -100 “$KEYS”
tail -100 “$KEYS”
echo
echo “===== PROGRESS =====”
tail -50 “$ARCH/scan-packed-targets-progress.txt”
} | tee “$ARCH/scan-packed-targets-summary.txt”
“`
Mirror and paste:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
cat “$ARCH/current-rmap-1795738-1795762.txt”
cat “$ARCH/scan-packed-targets-summary.txt”
“`
What we want is a hit in the **PACKED VALUE** file. A row there would mean:
“`text
some metadata block / entry maps:
virtual_thin_block = key
physical_tdata_block = 4169802
“`
That would be the bridge we’ve been trying to recover.
## Prompt:
03/06/2026, 06:21:31
This appears promising:
###
root@pve:~# MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
cat “$ARCH/current-rmap-1795738-1795762.txt”
cat “$ARCH/scan-packed-targets-summary.txt”
68,291 0% 16.41kB/s 0:00:04 (xfr#25, to-chk=0/122)
data 1795738..1795742 -> thin(5) 4169800..4169804
data 1795742..1795745 -> thin(5) 4169809..4169812
data 1795745..1795749 -> thin(5) 4169816..4169820
data 1795749..1795752 -> thin(5) 4169813..4169816
data 1795752..1795753 -> thin(5) 4169812..4169813
data 1795753..1795756 -> thin(5) 4169865..4169868
data 1795756..1795757 -> thin(5) 4169879..4169880
data 1795757..1795761 -> thin(5) 4169868..4169872
data 1795761..1795762 -> thin(5) 4169880..4169881
===== PACKED VALUE HITS: value >> 24 == target physical block =====
7 /mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/local-lvm-nvme0n1_tmeta.raw.target-packed-value-hits.tsv
metadata_block entry_index key value_raw value_hex value_high40 value_low24
288796 44 205701 69957635276800 0x00003fa048000000 4169800 0
288796 45 205702 69957652054016 0x00003fa049000000 4169801 0
486178 27 50280 69957668831232 0x00003fa04a000000 4169802 0
486178 28 50281 69957685608448 0x00003fa04b000000 4169803 0
486178 29 50282 69957702385664 0x00003fa04c000000 4169804 0
486178 30 50283 69957719162880 0x00003fa04d000000 4169805 0
metadata_block entry_index key value_raw value_hex value_high40 value_low24
288796 44 205701 69957635276800 0x00003fa048000000 4169800 0
288796 45 205702 69957652054016 0x00003fa049000000 4169801 0
486178 27 50280 69957668831232 0x00003fa04a000000 4169802 0
486178 28 50281 69957685608448 0x00003fa04b000000 4169803 0
486178 29 50282 69957702385664 0x00003fa04c000000 4169804 0
486178 30 50283 69957719162880 0x00003fa04d000000 4169805 0
===== KEY HITS: key == target block =====
7 /mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/local-lvm-nvme0n1_tmeta.raw.target-key-hits.tsv
metadata_block entry_index key value_raw value_hex value_high40 value_low24
13647 205 4169800 30127484305408 0x00001b669a000000 1795738 0
13647 206 4169801 30127501082624 0x00001b669b000000 1795739 0
13647 207 4169802 30127517859840 0x00001b669c000000 1795740 0
13647 208 4169803 30127534637056 0x00001b669d000000 1795741 0
13647 209 4169804 30127450750976 0x00001b6698000000 1795736 0
13647 210 4169805 30127467528192 0x00001b6699000000 1795737 0
metadata_block entry_index key value_raw value_hex value_high40 value_low24
13647 205 4169800 30127484305408 0x00001b669a000000 1795738 0
13647 206 4169801 30127501082624 0x00001b669b000000 1795739 0
13647 207 4169802 30127517859840 0x00001b669c000000 1795740 0
13647 208 4169803 30127534637056 0x00001b669d000000 1795741 0
13647 209 4169804 30127450750976 0x00001b6698000000 1795736 0
13647 210 4169805 30127467528192 0x00001b6699000000 1795737 0
===== PROGRESS =====
scanned_blocks=250000/4165632
scanned_blocks=500000/4165632
scanned_blocks=750000/4165632
scanned_blocks=1000000/4165632
root@pve:~#
###
## Response:
03/06/2026, 06:21:33
> **Calculating boot sector offsets and block differences**
>
> Let’s start by calculating a few things related to boot sector offsets.
>
> So, first, I check the math on the total, and yeah, it aligns. However, I need to compare the expected vs. actual result. A difference in block counts (430, exactly) seems to stem from either the boot sector being current instead of old, or maybe a different boot offset. I’ll
>
> **Reconstructing NTFS file data from mapping leaf**
>
> Alright, it looks like the old virtual partition started at 16 MiB, and the current candidate is closer to 44,957,696 bytes. The NTFS boot might be missing due to it not being in the orphan map. The next steps involve using mapping entries from the stale leaf to reconstruct the MFT region, and potentially decoding block 486178 for further work with physical block 4169802.
>
> **Decoding LCN to recover mapping key**
>
> It looks like when converting NTFS LCN clusters to virtual bytes, the formula is volume_base + LCN*4096. For DB runs, the volume base is 16,777,216, and after
>
> **Recovering and verifying NTFS volume mapping**
>
> I need to recover mapping for thin blocks, starting with the virtual block base calculation, around key 422445. To confirm the volume base, I’ll derive it from key 50280 and physical block 4169802. The calculation suggests an old volume base of 16 MiB, which matches typical MSR behavior — feels like I’m on the right track!
>
> Thought for 1m 6s
Yes. This is **more than promising** — this looks like the first real bridge.
The key distinction:
“`text
KEY HITS block 13647:
key 4169802 -> physical 1795740
“`
That appears to be current device `thin(5)` mapping, confirmed by `thin_rmap`, so it is **not** our deleted VM map.
But this part is the bridge:
“`text
PACKED VALUE HITS:
metadata_block 486178, key 50280 -> physical block 4169802
“`
That says a stale metadata leaf contains a mapping from **old virtual thin block `50280`** to **physical `tdata` block `4169802`**, which is exactly where our `facts_neubing.db` MFT record sits. That is the missing layer beginning to reappear.
Even better, this lets us derive the old NTFS volume base:
“`text
physical tdata block 4169802 + offset 18432
old virtual thin block 50280 + offset 18432
MFT record 55826, MFT LCN 786432, record size 1024
=> old NTFS volume base = 16,777,216 bytes
“`
That is a beautiful fit.
Run this small verification first:
“`bash
# Verify inferred old NTFS volume base from discovered stale thin mapping
THIN=65536
CLUSTER=4096
RECORD=1024
OLD_VKEY=50280
IN_BLOCK_OFFSET=18432
MFT_LCN=786432
RECNO=55826
OLD_VIRTUAL_ANCHOR=$((OLD_VKEY * THIN + IN_BLOCK_OFFSET))
MFT_RELATIVE=$((MFT_LCN * CLUSTER + RECNO * RECORD))
OLD_VOLUME_BASE=$((OLD_VIRTUAL_ANCHOR – MFT_RELATIVE))
echo “OLD_VIRTUAL_ANCHOR=$OLD_VIRTUAL_ANCHOR”
echo “MFT_RELATIVE=$MFT_RELATIVE”
echo “OLD_VOLUME_BASE=$OLD_VOLUME_BASE”
“`
Expected:
“`text
OLD_VOLUME_BASE=16777216
“`
Now we search stale `_tmeta` for the **virtual keys needed by one tiny log file** and the beginning of `facts_neubing.db`.
“`bash
# Search stale tmeta for virtual thin-block keys needed by target files
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
OLD_VOLUME_BASE=16777216
CLUSTER=4096
THIN=65536
mkdir -p “$ARCH/target-key-search”
{
echo “===== Tiny log 260516AA.LOG keys =====”
for LCN in 1387959 1013762; do
VBYTE=$((OLD_VOLUME_BASE + LCN * CLUSTER))
echo “LCN=$LCN VBYTE=$VBYTE VKEY=$((VBYTE / THIN)) VOFF=$((VBYTE % THIN))”
done
echo
echo “===== facts_neubing.db run0 start key =====”
LCN=6755031
VBYTE=$((OLD_VOLUME_BASE + LCN * CLUSTER))
echo “LCN=$LCN VBYTE=$VBYTE VKEY=$((VBYTE / THIN)) VOFF=$((VBYTE % THIN))”
} | tee “$ARCH/target-key-search/target-virtual-keys.txt”
“`
Then scan `_tmeta.raw` for those keys:
“`bash
cat > “$ARCH/target-key-search/scan_tmeta_for_exact_keys.py” <<'PY'
#!/usr/bin/env python3
import struct
import sys
from pathlib import Path
path = Path(sys.argv[1])
targets = {int(x) for x in sys.argv[2:]}
def u32(b, o): return struct.unpack_from("
continue
if max_entries <= 0 or max_entries > 512:
continue
if value_size != 8:
continue
keys_off = 0x20
vals_off = keys_off + max_entries * 8
if vals_off + nr_entries * 8 > block_size:
continue
for i in range(nr_entries):
key = u64(data, keys_off + i * 8)
if key not in targets:
continue
val = u64(data, vals_off + i * 8)
print(f”{bno}\t{i}\t{key}\t{val}\t0x{val:016x}\t{val >> 24}\t{val & 0xffffff}”)
PY
chmod +x “$ARCH/target-key-search/scan_tmeta_for_exact_keys.py”
“`
Now run the search using the keys printed above:
“`bash
# Compute keys automatically and scan them
KEYS=$(awk -F'[ =]+’ ‘/VKEY=/ {print $6}’ “$ARCH/target-key-search/target-virtual-keys.txt” | sort -n | uniq)
echo “KEYS=$KEYS” | tee “$ARCH/target-key-search/keys-used.txt”
python3 “$ARCH/target-key-search/scan_tmeta_for_exact_keys.py” “$TMETA_RAW” $KEYS \
| tee “$ARCH/target-key-search/exact-key-hits.tsv”
“`
Mirror and paste:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
cat “$ARCH/target-key-search/target-virtual-keys.txt”
cat “$ARCH/target-key-search/exact-key-hits.tsv”
“`
If those exact keys return stale mappings, we can reconstruct `260516AA.LOG` using the recovered virtual-key-to-physical-block bridge. Then we scale to `facts_neubing.db`.
## Prompt:
03/06/2026, 06:53:03
More found!
###
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 06:53:05
> **Deciding next steps for file citation**
>
> I need to make sure I follow the correct citation format for the uploaded file, though the lack of line markers makes it tricky. Since there’s a reference to using a specific format with “website” included, I think I’ll use that for now, even if it conflicts with the usual guidelines requiring line numbers.
>
> **Disambiguating physical-to-virtual key mappings**
>
> I need to resolve duplicates in the data. There are multiple mappings for key 63616, with different corresponding physical keys. To make the best choice, I’ll use the old virtual key 50280 as an anchor and look for nearby mappings from the same era using continuity. I’ll then identify the right metadata block and reconstruct the candidate mapping.
>
> Thought for 38s
Yes – this is **very promising**, but now we have a new challenge: **duplicate stale mappings**.
The good news: we found the bridge shape. The key result is that our old virtual key `50280` maps to physical `4169802`, which explains the exact `facts_neubing.db` MFT-record anchor. Now we also found target keys for `260516AA.LOG` and the start of `facts_neubing.db`: `63616`, `87003`, and `422445`. But there are multiple stale generations for the same virtual keys, so we must identify which generation belongs to the B2/FACTS disk. `Pasted text.txt`
The next step is **not** to reconstruct the whole DB yet. First we test the candidate mappings with small reads.
## 1. Probe the `facts_neubing.db` start candidates
Run this. It extracts a small sample from every candidate physical block for old virtual key `422445`.
“`bash
# Probe candidate mappings for facts_neubing.db run0 start
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
EXACT=”$ARCH/target-key-search/exact-key-hits.tsv”
CAND=”$OUT/recovery-probes/db-start-candidates”
mkdir -p “$CAND”
THIN=65536
DB_VKEY=422445
DB_VOFF=28672
awk -F’\t’ ‘NR>1 && $3==422445 {print $1 “\t” $2 “\t” $3 “\t” $6}’ “$EXACT” \
| sort -u \
> “$CAND/db-start-physical-candidates.tsv”
cat “$CAND/db-start-physical-candidates.tsv”
while IFS=$’\t’ read MB IDX KEY PHYS; do
[ -z “$PHYS” ] && continue
SKIP=$((PHYS * THIN + DB_VOFF))
OUTBIN=”$CAND/dbstart-mb${MB}-idx${IDX}-phys${PHYS}.bin”
echo “Extracting MB=$MB IDX=$IDX KEY=$KEY PHYS=$PHYS SKIP=$SKIP”
dd if=”$TDATA” of=”$OUTBIN” \
bs=1 skip=”$SKIP” count=1048576 \
iflag=skip_bytes,count_bytes status=none
{
echo “===== $OUTBIN =====”
echo “MB=$MB IDX=$IDX KEY=$KEY PHYS=$PHYS SKIP=$SKIP”
file “$OUTBIN”
echo “— strings —”
strings -a -n 6 “$OUTBIN” | grep -Ei ‘SQL|Anywhere|Sybase|Watcom|facts|neubing|CREATE|DATABASE|B2|dba|DBA’ | head -80 || true
echo “— hex head —”
od -Ax -tx1 -N 256 “$OUTBIN”
echo
} | tee “$OUTBIN.report.txt”
done < "$CAND/db-start-physical-candidates.tsv"
cat "$CAND"/*.report.txt > “$CAND/db-start-candidate-summary.txt”
cat “$CAND/db-start-candidate-summary.txt”
“`
## 2. Probe tiny log candidates
This tests `260516AA.LOG`. We know its two old virtual blocks:
“`text
VKEY 87003, VOFF 28672
VKEY 63616, VOFF 8192
“`
Run:
“`bash
# Probe candidate mappings for tiny 260516AA.LOG
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
EXACT=”$ARCH/target-key-search/exact-key-hits.tsv”
LOGC=”$OUT/recovery-probes/tiny-log-bridge-candidates”
mkdir -p “$LOGC”
THIN=65536
awk -F’\t’ ‘NR>1 && $3==87003 {print $6}’ “$EXACT” | sort -nu > “$LOGC/key87003-phys.txt”
awk -F’\t’ ‘NR>1 && $3==63616 {print $6}’ “$EXACT” | sort -nu > “$LOGC/key63616-phys.txt”
echo “===== key 87003 physical candidates =====”
cat “$LOGC/key87003-phys.txt”
echo “===== key 63616 physical candidates =====”
cat “$LOGC/key63616-phys.txt”
COUNT=0
while read P1; do
[ -z “$P1” ] && continue
while read P2; do
[ -z “$P2″ ] && continue
COUNT=$((COUNT + 1))
F1=”$LOGC/part1-${P1}.bin”
F2=”$LOGC/part2-${P2}.bin”
OUTBIN=”$LOGC/260516AA-candidate-${COUNT}-p1_${P1}-p2_${P2}.bin”
dd if=”$TDATA” of=”$F1″ \
bs=1 skip=$((P1 * THIN + 28672)) count=4096 \
iflag=skip_bytes,count_bytes status=none
dd if=”$TDATA” of=”$F2″ \
bs=1 skip=$((P2 * THIN + 8192)) count=4096 \
iflag=skip_bytes,count_bytes status=none
cat “$F1” “$F2” > “$OUTBIN”
{
echo “===== $OUTBIN =====”
echo “P1=$P1 P2=$P2”
file “$OUTBIN”
echo “— strings —”
strings -a -n 5 “$OUTBIN” | grep -Ei ‘SQL|Anywhere|Sybase|Watcom|facts|neubing|LOG|B2|transaction’ | head -50 || true
echo “— hex head —”
od -Ax -tx1 -N 128 “$OUTBIN”
echo
} >> “$LOGC/tiny-log-candidate-summary.txt”
done < "$LOGC/key63616-phys.txt"
done < "$LOGC/key87003-phys.txt"
cat "$LOGC/tiny-log-candidate-summary.txt"
```
## 3. Mirror and paste only the summaries
```bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH --info=progress2 "$OUT/" "$MIRROR/"
echo "===== DB START CANDIDATES ====="
cat "$CAND/db-start-candidate-summary.txt"
echo "===== TINY LOG CANDIDATES ====="
cat "$LOGC/tiny-log-candidate-summary.txt"
```
What we want: one candidate that clearly looks less random, ideally with SQL Anywhere / database / log strings or a recognizable structured header. Once one mapping generation is confirmed, we stop guessing and start reconstructing the file using that generation.
## Prompt:
03/06/2026, 07:00:51
The CLI-buffer may have been rolled over, but here is what came back:
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 07:00:52
> **Identifying log file format and next steps**
>
> It seems we might be dealing with a binary SQL Anywhere log file, misidentified as a Matlab file. The header doesn’t seem invalid, but we need better validation. Maybe I’ll search the web for precise log format details, or I could use earlier evidence to score the candidates automatically for better analysis.
>
> **Selecting correct generation for key mapping**
>
> It looks like I need to select the correct generation and transaction for key mappings. The metadata blocks, especially block 486178 and others, might provide clues. I’ll examine the metadata node headers for consistency, focusing on the key mappings and checking roots and leaves for consistency with the data on disk.
>
> **Reconstructing the mapping and inspecting metadata**
>
> I’m thinking about creating a virtual disk image with a small range of recovered mapping leaves. To do this, I’ll need to reconstruct the mapping tables from raw data. I’ll scan B-tree leaves for orphan DB context and look at adjacent blocks in metadata for stale entries and logical areas around MFT.
>
> **Identifying and testing SQL Anywhere database headers**
>
> I need to determine the correct SQL Anywhere DB header to identify valid database files. I might try processing files from the NAS, then create a scoring report with hex strings and byte frequency. If SQL Anywhere is available on a repaired VM, I could test with dbvalid. Comparing headers with backup files from 2023 might help too.
>
> **Using backup files to validate database headers**
>
> I can use the older facts_neubing.db from the 2023 backup on the NAS to identify header signatures. This would help compare the first page or header against current candidates. I’ll propose comparing the first 256 bytes of the old DB to the candidate, but we need the user to help locate files.
>
> **Validating tiny log candidates and SQL log signatures**
>
> For tiny log candidates, I’ll create a score report analyzing the first and second 4K halves, entropy, zero ratio, and strings. The “Matlab” misclassification isn’t relevant. SQL logs may be binary, so I’ll avoid relying on strings. The key is to compare against the known old database and MFT anchor for validation.
>
> **Moving to automated scoring using known good data**
>
> I’ll transition from visual judgment to automated scoring, using an older “facts_neubing.db” or log if available. The file_search command shows no lines or markers, but it might still be acceptable to cite the file without line numbers. I’ll proceed with using file_search and mclick for relevant data from the pointer.
>
> **Moving to automated scoring and addressing false positives**
>
> The pasted output is still incomplete, but the tiny log candidates aren’t conclusive. I’ll rely on stored files and move to scoring based on the candidate binaries. We don’t need to cite everything, just the uploaded file where relevant. I’ll focus on providing concise feedback, including false positives and plan the Python scoring step based on the key attributes.
>
> Thought for 50s
Yes – and the CLI rollover is exactly why we should stop judging these by visual paste. The visible return shows many tiny-log candidates are binary, repetitive by `P1`, and `file` is giving misleading “Matlab v4” guesses for some candidates. That does **not** prove failure; it proves we need machine scoring from the NAS files instead of eyeballing terminal output. `Pasted text.txt`
The DB-start candidate summary is the more important one, and it likely rolled out of the buffer. Let’s create a compact scoring report from the actual files on NAS.
Run this:
“`bash
# Score DB-start and tiny-log bridge candidates from NAS files
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PROBE=”$OUT/recovery-probes”
CAND=”$PROBE/db-start-candidates”
LOGC=”$PROBE/tiny-log-bridge-candidates”
cat > “$PROBE/score_candidates.py” <<'PY'
#!/usr/bin/env python3
import sys, math, hashlib, subprocess
from pathlib import Path
TERMS = [
b"SQL", b"Anywhere", b"Sybase", b"Watcom",
b"facts", b"neubing", b"database", b"DBA",
b"B2", b"CREATE", b"CHECKSUM"
]
def entropy(b):
if not b:
return 0.0
counts = [0] * 256
for x in b:
counts[x] += 1
n = len(b)
return -sum((c/n) * math.log2(c/n) for c in counts if c)
def safe_file(path):
try:
return subprocess.check_output(["file", str(path)], text=True, errors="replace").strip()
except Exception as e:
return f"file-error: {e}"
def score(path):
data = path.read_bytes()
head = data[:65536]
zeros = head.count(0) / len(head) if head else 0
printable = sum(32 <= x <= 126 or x in (9,10,13) for x in head) / len(head) if head else 0
hits = sum(data.lower().count(t.lower()) for t in TERMS)
h4k = hashlib.sha256(data[:4096]).hexdigest()[:16]
hfull = hashlib.sha256(data).hexdigest()[:16]
return {
"path": path,
"size": len(data),
"entropy64k": entropy(head),
"zero_pct": zeros * 100,
"printable_pct": printable * 100,
"term_hits": hits,
"sha4k": h4k,
"shafile": hfull,
"first32": data[:32].hex(),
"file": safe_file(path),
}
paths = []
for arg in sys.argv[1:]:
p = Path(arg)
if p.is_dir():
paths.extend(sorted(p.glob("*.bin")))
elif p.exists():
paths.append(p)
rows = [score(p) for p in paths]
print("kind\tname\tsize\tentropy64k\tzero_pct\tprintable_pct\tterm_hits\tsha4k\tshafile\tfirst32\tfile")
for r in sorted(rows, key=lambda x: (-x["term_hits"], x["entropy64k"], x["sha4k"], str(x["path"]))):
name = r["path"].name
kind = "dbstart" if "dbstart" in name else "tinylog"
print(
f"{kind}\t{name}\t{r['size']}\t{r['entropy64k']:.3f}\t"
f"{r['zero_pct']:.2f}\t{r['printable_pct']:.2f}\t{r['term_hits']}\t"
f"{r['sha4k']}\t{r['shafile']}\t{r['first32']}\t{r['file']}"
)
PY
python3 "$PROBE/score_candidates.py" "$CAND" "$LOGC" \
| tee "$PROBE/candidate-score-report.tsv"
```
Now make the report human-sized:
```bash
{
echo "===== DB START CANDIDATES ====="
awk -F'\t' 'NR==1 || $1=="dbstart"' "$PROBE/candidate-score-report.tsv"
echo
echo "===== TINY LOG UNIQUE FIRST-PAGE GROUPS ====="
awk -F'\t' '$1=="tinylog" {c[$8]++; sample[$8]=$2; first[$8]=$10; ent[$8]=$4; zero[$8]=$5; pr[$8]=$6; hits[$8]=$7}
END {for (h in c) print c[h], h, "sample="sample[h], "entropy="ent[h], "zero="zero[h], "printable="pr[h], "hits="hits[h], "first32="first[h]}' \
"$PROBE/candidate-score-report.tsv" | sort -nr
echo
echo "===== TOP TERM-HIT CANDIDATES ====="
awk -F'\t' 'NR==1 || $7+0>0′ “$PROBE/candidate-score-report.tsv” | head -100
} | tee “$PROBE/candidate-score-summary.txt”
cat “$PROBE/candidate-score-summary.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
What we’re looking for now is simple:
“`text
A DB-start candidate with non-random structure or SQL/Watcom/Sybase/Anywhere strings.
A tiny-log candidate whose two halves are not just random/repeated unrelated pages.
A repeated first-page group that aligns with the same stale generation as the MFT-anchor bridge.
“`
The visible tiny-log paste did not give a decisive winner. The score report should.
## Prompt:
03/06/2026, 07:10:57
If it is of help at any point, I can download and upload files to both NAS devices. Heres that return:
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 07:11:05
> **Analyzing potential SQL Anywhere database pages**
>
> It looks like I’m dealing with some candidate database pages. I’m seeing term hits with low entropy and some binary data, which might suggest this is a SQL Anywhere DB page. I need to verify by running commands to extract and examine the actual strings, then compare them. I also need to check the file offset at zero — could be part of the database header.
>
> Thought for 12s
Yes – downloading/uploading from the NAS **will become useful**, especially for the three `dbstart` 1 MiB candidate files and later any reconstructed `.db` / `.log` candidates. For the next rung, though, we can still get a lot from the server-side NAS files.
This return narrows the field sharply. The strongest candidate is:
“`text
dbstart-mb456204-idx36-phys4387122.bin
“`
Why: it has **80 term hits**, far more than the other two DB-start candidates, and its structure is very sparse/zero-heavy, which is plausible for a database header/page region. The other two DB-start candidates are identical to each other and look less likely: same SHA, high entropy, only 25 term hits, and `file` misclassifies them as OpenPGP-like data. `Pasted text.txt`
The tiny log candidates did not identify a clean winner. The best-looking log groups are probably the `part1-334024` family and the `part2-55432` / `part2-7023640` pair, but I would not spend the next move there. The database-start candidate is more important now. `Pasted text.txt`
Run this compact inspection:
“`bash
# Deep-inspect strongest DB-start candidates
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PROBE=”$OUT/recovery-probes”
CAND=”$PROBE/db-start-candidates”
REPORT=”$CAND/dbstart-deep-inspection.txt”
{
date
for f in \
“$CAND/dbstart-mb456204-idx36-phys4387122.bin” \
“$CAND/dbstart-mb449449-idx199-phys4805235.bin” \
“$CAND/dbstart-mb5524-idx241-phys3500053.bin”
do
echo
echo “===== $f =====”
ls -lh “$f”
sha256sum “$f”
file “$f”
echo
echo “— TERM OFFSETS —”
grep -aobiE ‘SQL|Anywhere|Sybase|Watcom|facts|neubing|database|DBA|B2|CREATE|CHECKSUM|1252LATIN1|UCA|PAGE SIZE’ “$f” | head -200 || true
echo
echo “— STRINGS AROUND TERMS —”
strings -a -td -n 4 “$f” |
grep -Ei ‘SQL|Anywhere|Sybase|Watcom|facts|neubing|database|DBA|B2|CREATE|CHECKSUM|1252LATIN1|UCA|PAGE SIZE’ |
head -200 || true
echo
echo “— FIRST 1024 BYTES —”
od -Ax -tx1 -N 1024 “$f”
echo
echo “— 4K PAGE HASHES / ZERO COUNTS —”
python3 – “$f” <<'PY'
import sys, hashlib
from pathlib import Path
p = Path(sys.argv[1])
data = p.read_bytes()
for i in range(0, min(len(data), 1024*1024), 4096):
page = data[i:i+4096]
z = page.count(0)
# quick printable estimate
pr = sum(32 <= b <= 126 or b in (9,10,13) for b in page)
print(f"page={i//4096:04d} off={i:08x} zero={z:4d} printable={pr:4d} sha16={hashlib.sha256(page).hexdigest()[:16]} first16={page[:16].hex()}")
PY
done
} | tee "$REPORT"
cat "$REPORT"
```
Then mirror:
```bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH --info=progress2 "$OUT/" "$MIRROR/"
```
Paste only the sections for:
```text
dbstart-mb456204-idx36-phys4387122.bin
TERM OFFSETS
STRINGS AROUND TERMS
first 20 lines of 4K PAGE HASHES / ZERO COUNTS
```
The goal is to determine whether `phys4387122` is genuinely the `facts_neubing.db` file start. If it is, we can build a **candidate reconstruction of the first NTFS run** using mappings from the same metadata generation. That would be the first real database candidate, written only to NAS.
## Prompt:
03/06/2026, 07:26:25
Here that is:
###
/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-start-candidates/dbstart-mb449449-idx199-phys4805235.bin: OpenPGP Public Key
--- TERM OFFSETS ---
12968:b2
63626:B2
125762:B2
138899:B2
171977:b2
173777:B2
322473:UCa
374916:DBA
383597:b2
487959:b2
551445:DBA
628792:dbA
638425:B2
777978:b2
782701:B2
806041:B2
827946:b2
830249:b2
835443:b2
898179:B2
910963:b2
938093:DBA
974474:B2
977254:B2
1025925:B2
1037124:b2
--- STRINGS AROUND TERMS ---
63623 GX|B2FH:~'
125760 .BB2
138897 ABB2DEE/2"
383595 !!b2$ 628782 :@ X\[[a_ddbA
638423 V6B2
782701 B233E$
806035 --GG/EB220D
827944 !db2*
830248 fb2
898176 :@ B233[E5
910956 D:-^#>_b2″g
938093 DBAAKH<
974474 B2/*
1037124 b2JM
###
## Response:
03/06/2026, 07:26:31
> **Clarifying user input and file handling**
>
> It seems like the user pasted the wrong candidate ID, “dbstart-mb449” instead of “456.” I should ask them to provide the correct section or explain the error. If they uploaded a file, I can check it for relevant info. If they haven’t, I’ll suggest uploading the correct candidate file for further analysis.
>
> Thought for 27s
Yes – this section is for **`dbstart-mb449449-idx199-phys4805235.bin`**, not the stronger **`dbstart-mb456204-idx36-phys4387122.bin`**.
And this `449449/4805235` section looks like noise: mostly accidental `B2`, `b2`, `DBA`, and one `UCa`; no meaningful `SQL`, `Sybase`, `Anywhere`, `facts`, `neubing`, `CREATE DATABASE`, etc. That matches the scoring report: it had fewer term hits and was identical to the `5524/3500053` candidate, while `456204/4387122` stood out with **80 term hits**. `Pasted text.txt`
So we should extract **only** the `456204/4387122` section now.
Run this:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PROBE=”$OUT/recovery-probes”
CAND=”$PROBE/db-start-candidates”
REPORT=”$CAND/dbstart-deep-inspection.txt”
awk ‘
/^===== .*dbstart-mb449449-idx199-phys4805235\.bin/ && show {exit}
/^===== .*dbstart-mb456204-idx36-phys4387122\.bin/ {show=1}
show {print}
‘ “$REPORT” | tee “$CAND/dbstart-456204-only.txt”
cat “$CAND/dbstart-456204-only.txt”
“`
Also run this compact term-count view against the same candidate:
“`bash
F=”$CAND/dbstart-mb456204-idx36-phys4387122.bin”
{
echo “===== FILE =====”
ls -lh “$F”
sha256sum “$F”
file “$F”
echo
echo “===== TERM COUNTS =====”
for t in SQL Anywhere Sybase Watcom facts neubing database DBA B2 CREATE CHECKSUM 1252LATIN1 UCA PAGE; do
printf “%-16s ” “$t”
LC_ALL=C grep -aoi “$t” “$F” | wc -l
done
echo
echo “===== TERM OFFSETS =====”
LC_ALL=C grep -aobiE ‘SQL|Anywhere|Sybase|Watcom|facts|neubing|database|DBA|B2|CREATE|CHECKSUM|1252LATIN1|UCA|PAGE SIZE’ “$F” | head -200
echo
echo “===== STRINGS AROUND TERMS =====”
strings -a -td -n 4 “$F” |
grep -Ei ‘SQL|Anywhere|Sybase|Watcom|facts|neubing|database|DBA|B2|CREATE|CHECKSUM|1252LATIN1|UCA|PAGE SIZE’ |
head -200
echo
echo “===== FIRST 1024 BYTES =====”
od -Ax -tx1 -N 1024 “$F”
} | tee “$CAND/dbstart-456204-compact.txt”
cat “$CAND/dbstart-456204-compact.txt”
“`
This will tell us whether the 80 hits are meaningful database strings or just repeated accidental `B2`/`DBA` fragments.
And yes, uploading files can help. The best single file to upload later would be:
“`text
/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-start-candidates/dbstart-mb456204-idx36-phys4387122.bin
“`
But first let’s inspect the compact term report above.
## Prompt:
03/06/2026, 07:29:34
Here that is:
###
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 07:29:37
> **Analyzing candidate database logs and next steps**
>
> I’m reviewing the candidate SQL Anywhere DB/log page which shows facts_neubing.log and details like Sybase version and collation — looks promising. It’s pointing to a log start at offset 16404, not the DB itself. The next steps involve analyzing the extracted block and reconstructing mappings for the database start.
>
> Thought for 40s
This is a **major confirmation**.
`dbstart-mb456204-idx36-phys4387122.bin` is not noise. It contains SQL Anywhere / Sybase 12 material, the expected collation markers `1252LATIN1`, `UCA`, `UTF-8`, and, most importantly, the embedded log filename:
“`text
facts_neubing.log
“`
at offset `16404`. That is exactly the kind of string I would expect inside a SQL Anywhere database header or early database pages. The repeated `Sybase Inc., Copyright (c)2000 12.0.1.3873` sequence and the collation strings make this candidate much stronger than the other two `dbstart` candidates. `Pasted text.txt`
So our current best bridge is:
“`text
old virtual thin key 422445
-> stale metadata block 456204, entry 36
-> physical tdata block 4387122
-> begins plausible facts_neubing.db content
“`
The next move is to stop sampling and begin reconstructing a **small mapped prefix** of the database through stale thin mappings, not by linear physical reads.
Run this next.
“`bash
# Inspect the stale metadata leaf that produced the winning DB-start block
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
LEAF=”$ARCH/dbstart-winning-leaf”
mkdir -p “$LEAF”
MB=456204
dd if=”$TMETA_RAW” of=”$LEAF/tmeta-block-${MB}.bin” \
bs=4096 skip=”$MB” count=1 status=none
cat > “$LEAF/decode_leaf_range.py” <<'PY'
#!/usr/bin/env python3
import struct, sys
from pathlib import Path
p = Path(sys.argv[1])
data = p.read_bytes()
def u32(o): return struct.unpack_from("
PY
python3 “$LEAF/decode_leaf_range.py” “$LEAF/tmeta-block-${MB}.bin” \
| tee “$LEAF/tmeta-block-${MB}-decoded.tsv”
cat “$LEAF/tmeta-block-${MB}-decoded.tsv”
“`
Then create a tiny mapped reconstruction using only the contiguous keys present in that same winning leaf:
“`bash
# Build a mapped candidate from the winning leaf, starting at old DB virtual key 422445
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
THIN=65536
DB_START_KEY=422445
DB_START_VOFF=28672
REC=”$OUT/recovery-probes/db-reconstruction”
mkdir -p “$REC”
MAP=”$LEAF/tmeta-block-456204-decoded.tsv”
OUTBIN=”$REC/facts_neubing.db.prefix-from-leaf456204.bin”
: > “$OUTBIN”
awk -F’\t’ -v start=”$DB_START_KEY” ‘NR>2 && $2>=start {print $2 “\t” $3}’ “$MAP” |
sort -n |
while IFS=$’\t’ read KEY PHYS; do
[ -z “$KEY” ] && continue
if [ “$KEY” = “$DB_START_KEY” ]; then
SKIP=$((PHYS * THIN + DB_START_VOFF))
COUNT=$((THIN – DB_START_VOFF))
else
SKIP=$((PHYS * THIN))
COUNT=$THIN
fi
echo “KEY=$KEY PHYS=$PHYS SKIP=$SKIP COUNT=$COUNT” | tee -a “$REC/prefix-from-leaf456204.map.txt”
dd if=”$TDATA” of=”$OUTBIN” \
bs=1 skip=”$SKIP” count=”$COUNT” \
iflag=skip_bytes,count_bytes oflag=append conv=notrunc status=none
done
ls -lh “$OUTBIN”
sha256sum “$OUTBIN” | tee “$OUTBIN.sha256”
{
echo “===== FILE =====”
file “$OUTBIN”
echo
echo “===== SIZE/SHA =====”
ls -lh “$OUTBIN”
cat “$OUTBIN.sha256”
echo
echo “===== TERM COUNTS =====”
for t in SQL Anywhere Sybase Watcom facts_neubing facts_neubing.log database DBA CHECKSUM 1252LATIN1 UCA PAGE; do
printf “%-18s ” “$t”
LC_ALL=C grep -aoi “$t” “$OUTBIN” | wc -l
done
echo
echo “===== STRINGS HEAD =====”
strings -a -td -n 4 “$OUTBIN” |
grep -Ei ‘SQL|Anywhere|Sybase|Watcom|facts_neubing|database|DBA|CHECKSUM|1252LATIN1|UCA|PAGE’ |
head -200
echo
echo “===== FIRST 1024 BYTES =====”
od -Ax -tx1 -N 1024 “$OUTBIN”
} | tee “$REC/prefix-from-leaf456204-report.txt”
cat “$REC/prefix-from-leaf456204-report.txt”
“`
Mirror afterward:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
What I want to see next is the decoded leaf range. If block `456204` contains a contiguous key sequence from around `422409` onward, and the reconstructed prefix continues to look like SQL Anywhere data past the first block, we can scale from one leaf to many leaves and reconstruct the first 64 MiB, then the full first NTFS run.
## Prompt:
03/06/2026, 07:36:28
Done!
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 07:36:30
> **Fixing file prefix issue**
>
> The output indicates a problem with the reconstructed file’s prefix due to the inclusion of the header row. This caused a spurious leading 64K, but the rest of the data looks correct. I need to adjust the script to exclude the header and rebuild the prefix, which will fix the issue. Then, I’ll proceed with the next build.
>
> **Rebuilding and verifying key range**
>
> I need to inspect the header to ensure it starts correctly. Then, I’ll work on rebuilding the prefix with a corrected numeric key and verify it. Next, I’ll compute the full key range for the first NTFS run and check the key endpoints based on the run length and offset calculations. It should result in the keys 422445 to 432479.
>
> **Scanning and mapping key ranges**
>
> I need to scan for the next contiguous leaf by looking at the keys around 422656. We should create a script to scan through the key range 422445–432479 and identify stale or duplicate mappings. I’ll verify key-to-physical positions, making sure the data doesn’t have discontinuities, especially considering the initial partial mapping.
>
> Thought for 20s
Excellent – and we found one small script bug that explains the apparent contradiction.
The reconstructed `facts_neubing.db.prefix-from-leaf456204.bin` begins with an MBR/GPT because the loop accidentally included the TSV header row:
“`text
KEY=key PHYS=phys_high40 SKIP=0 COUNT=65536
“`
So it prepended the first 64 KiB of `TDATA` before the actual recovered database material. That is why `file` saw an MBR/GPT, while the strings later show very strong SQL Anywhere content: `Sybase`, `facts_neubing.log`, `facts_neubing.db`, `database_uid`, `CHECKSUM`, and FACTS UI strings. `Pasted text.txt`
This is still a major success. We have coherent database material from the mapped stale leaf. Now rebuild the prefix without the header row.
“`bash
# Rebuild corrected DB prefix from leaf456204, excluding TSV/header rows
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
LEAF=”$ARCH/dbstart-winning-leaf”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
THIN=65536
DB_START_KEY=422445
DB_START_VOFF=28672
REC=”$OUT/recovery-probes/db-reconstruction”
mkdir -p “$REC”
MAP=”$LEAF/tmeta-block-456204-decoded.tsv”
OUTBIN=”$REC/facts_neubing.db.prefix-from-leaf456204.corrected.bin”
MAPOUT=”$REC/prefix-from-leaf456204.corrected.map.txt”
: > “$OUTBIN”
: > “$MAPOUT”
awk -F’\t’ -v start=”$DB_START_KEY” ‘
$1 ~ /^[0-9]+$/ && $2 ~ /^[0-9]+$/ && $3 ~ /^[0-9]+$/ && $2 >= start {
print $2 “\t” $3
}
‘ “$MAP” |
sort -n |
while IFS=$’\t’ read KEY PHYS; do
[ -z “$KEY” ] && continue
if [ “$KEY” = “$DB_START_KEY” ]; then
SKIP=$((PHYS * THIN + DB_START_VOFF))
COUNT=$((THIN – DB_START_VOFF))
else
SKIP=$((PHYS * THIN))
COUNT=$THIN
fi
echo “KEY=$KEY PHYS=$PHYS SKIP=$SKIP COUNT=$COUNT” | tee -a “$MAPOUT”
dd if=”$TDATA” of=”$OUTBIN” \
bs=1 skip=”$SKIP” count=”$COUNT” \
iflag=skip_bytes,count_bytes oflag=append conv=notrunc status=none
done
{
echo “===== FILE =====”
file “$OUTBIN”
echo
echo “===== SIZE/SHA =====”
ls -lh “$OUTBIN”
sha256sum “$OUTBIN”
echo
echo “===== FIRST MAP LINES =====”
head -20 “$MAPOUT”
echo
echo “===== TERM COUNTS =====”
for t in SQL Anywhere Sybase Watcom facts_neubing facts_neubing.log database DBA CHECKSUM 1252LATIN1 UCA PAGE; do
printf “%-18s ” “$t”
LC_ALL=C grep -aoi “$t” “$OUTBIN” | wc -l
done
echo
echo “===== STRINGS HEAD =====”
strings -a -td -n 4 “$OUTBIN” |
grep -Ei ‘SQL|Anywhere|Sybase|Watcom|facts_neubing|database|DBA|CHECKSUM|1252LATIN1|UCA|PAGE’ |
head -120
echo
echo “===== FIRST 1024 BYTES =====”
od -Ax -tx1 -N 1024 “$OUTBIN”
} | tee “$REC/prefix-from-leaf456204.corrected-report.txt”
cat “$REC/prefix-from-leaf456204.corrected-report.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
After that, we scale beyond this one leaf. This searches the raw metadata copy for all stale mappings covering the first NTFS run of `facts_neubing.db`.
“`bash
# Scan tmeta for mappings covering facts_neubing.db first NTFS run
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
RANGE=”$ARCH/db-first-run-range”
mkdir -p “$RANGE”
# facts_neubing.db run0:
# start virtual key 422445, start offset 28672
# run length 160551 clusters * 4096 = 657616896 bytes
START_KEY=422445
END_KEY=432479
cat > “$RANGE/scan_tmeta_key_range.py” <<'PY'
#!/usr/bin/env python3
import struct, sys
from pathlib import Path
path = Path(sys.argv[1])
start = int(sys.argv[2])
end = int(sys.argv[3])
def u32(b,o): return struct.unpack_from("
continue
if max_entries <= 0 or max_entries > 512:
continue
if value_size != 8:
continue
keys_off = 0x20
vals_off = keys_off + max_entries * 8
if vals_off + nr_entries * 8 > block_size:
continue
for i in range(nr_entries):
key = u64(data, keys_off + i * 8)
if start <= key <= end:
val = u64(data, vals_off + i * 8)
print(f"{bno}\t{i}\t{key}\t{val >> 24}\t{val & 0xffffff}\t0x{val:016x}”)
PY
chmod +x “$RANGE/scan_tmeta_key_range.py”
python3 “$RANGE/scan_tmeta_key_range.py” “$TMETA_RAW” “$START_KEY” “$END_KEY” \
| tee “$RANGE/db-run0-keyrange-hits.tsv”
“`
Summarize it compactly:
“`bash
{
echo “===== HIT COUNT =====”
wc -l “$RANGE/db-run0-keyrange-hits.tsv”
echo
echo “===== METADATA BLOCK COUNTS =====”
awk -F’\t’ ‘NR>1 {c[$1]++; mink[$1]=($1 in mink && mink[$1]<$3?mink[$1]:$3); maxk[$1]=($1 in maxk && maxk[$1]>$3?maxk[$1]:$3)}
END {for (b in c) print c[b], b, mink[b], maxk[b]}’ “$RANGE/db-run0-keyrange-hits.tsv” |
sort -nr |
head -80
echo
echo “===== CONTIGUOUS PHYSICAL RUNS BY METADATA BLOCK =====”
awk -F’\t’ ‘
NR==1 {next}
{
mb=$1; key=$3; phys=$4;
if (!(mb in lastkey)) {
startkey[mb]=key; startphys[mb]=phys; runlen[mb]=1;
} else if (key==lastkey[mb]+1 && phys==lastphys[mb]+1) {
runlen[mb]++;
} else {
print mb, startkey[mb], lastkey[mb], startphys[mb], lastphys[mb], runlen[mb];
startkey[mb]=key; startphys[mb]=phys; runlen[mb]=1;
}
lastkey[mb]=key; lastphys[mb]=phys;
}
END {
for (mb in lastkey) print mb, startkey[mb], lastkey[mb], startphys[mb], lastphys[mb], runlen[mb];
}
‘ “$RANGE/db-run0-keyrange-hits.tsv” |
sort -n -k2,2 |
head -120
} | tee “$RANGE/db-run0-keyrange-summary.txt”
cat “$RANGE/db-run0-keyrange-summary.txt”
“`
Paste the corrected-prefix report plus the keyrange summary. If the range scan shows continuous coverage from `422445` upward through successive metadata blocks, we can reconstruct a much larger candidate, starting with 64 MiB and then the whole first NTFS run.
## Prompt:
03/06/2026, 08:21:12
Yes, it did!
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 08:21:15
> **Interpreting file content and citation format**
>
> I need to respond to the user’s “Yes it did!” with the content from the file. The file search requires citing it, but it seems the content doesn’t have line markers. I should check whether it’s okay to cite the entire file or if it needs specific formatting. Also, there’s still some ambiguity about the report’s content — it may not be fully corrected yet.
>
> **Considering potential issues with report correction and response**
>
> It looks like the report might not be fully corrected after all. The file seems to contain a mixture of old and new content. It includes a keyrange summary, but the prefix correction is missing. The user said, “Yes it did!” but I suspect they uploaded a partial version. I need to formulate a response based on the keyrange scan results.
>
> **Evaluating keyrange data and steps needed for correction**
>
> The keyrange analysis shows a substantial hit count, yet many zero mappings suggest stale generations. The most promising leaf, 456204, starts with a valid DB header but might need validation for corrected prefixes. I should inspect the corrected file or rebuild it, excluding headers. Also, I need to check if prior bugs persisted.
>
> **Validating report and next steps**
>
> It seems the user might have run the corrected range scan, but the file [293] doesn’t show the corrected report. I should confirm with them. Based on the hit range, I can help reconstruct the map starting from key 422445. We’ll need to tackle issues like duplicate mappings and validate the 456204 leaf to ensure consistency.
>
> Thought for 52s
Yes – this is the bridge becoming a road.
Your range scan found **1,082,019 candidate mapping hits** for the first NTFS run, and the important part is the validated generation around metadata block `456204`: key `422445 -> phys 4387122`, then `422446..422655 -> phys 4819728..4819937`. That matches the good SQL Anywhere material we saw in the DB-start probe. `Pasted text.txt`
One caution: the old prefix report still shows the header-row bug:
“`text
KEY=key PHYS=phys_high40 SKIP=0 COUNT=65536
“`
So that older reconstructed file begins with an accidental MBR/GPT block. The **actual useful data starts after that accidental first 64 KiB**. We should now build a cleaner map and reconstruct a smaller verified candidate.
Run this next.
“`bash
# Build a clean positive-run summary, excluding phys=0 and duplicate noise
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
{
echo “===== POSITIVE CONTIGUOUS RUNS length >= 8 =====”
awk -F’\t’ ‘
NR==1 {next}
$4+0 <= 0 {next}
{
mb=$1; key=$3+0; phys=$4+0
if (!(mb in lastkey)) {
sk[mb]=key; sp[mb]=phys; len[mb]=1
} else if (key==lastkey[mb]+1 && phys==lastphys[mb]+1) {
len[mb]++
} else {
if (len[mb] >= 8) print mb, sk[mb], lastkey[mb], sp[mb], lastphys[mb], len[mb]
sk[mb]=key; sp[mb]=phys; len[mb]=1
}
lastkey[mb]=key; lastphys[mb]=phys
}
END {
for (mb in lastkey) if (len[mb] >= 8) print mb, sk[mb], lastkey[mb], sp[mb], lastphys[mb], len[mb]
}
‘ “$HITS” | sort -n -k2,2 -k1,1 | head -300
echo
echo “===== 456xxx POSITIVE RUNS =====”
awk -F’\t’ ‘
NR==1 {next}
$1 >= 456000 && $1 < 457000 && $4+0 > 0 {
mb=$1; key=$3+0; phys=$4+0
if (!(mb in lastkey)) {
sk[mb]=key; sp[mb]=phys; len[mb]=1
} else if (key==lastkey[mb]+1 && phys==lastphys[mb]+1) {
len[mb]++
} else {
print mb, sk[mb], lastkey[mb], sp[mb], lastphys[mb], len[mb]
sk[mb]=key; sp[mb]=phys; len[mb]=1
}
lastkey[mb]=key; lastphys[mb]=phys
}
END {
for (mb in lastkey) print mb, sk[mb], lastkey[mb], sp[mb], lastphys[mb], len[mb]
}
‘ “$HITS” | sort -n -k2,2 -k1,1
} | tee “$RANGE/db-run0-positive-run-summary.txt”
cat “$RANGE/db-run0-positive-run-summary.txt”
“`
Then build a **clean 456-family 14 MiB prefix**, excluding the accidental header and trimming only from real mappings:
“`bash
# Reconstruct clean prefix using the validated 456-family mappings
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
THIN=65536
DB_START_KEY=422445
DB_START_VOFF=28672
REC=”$OUT/recovery-probes/db-reconstruction”
mkdir -p “$REC”
MAP456=”$REC/map-456-family-clean.tsv”
OUTBIN=”$REC/facts_neubing.db.prefix-456-family-clean.bin”
MAPOUT=”$REC/facts_neubing.db.prefix-456-family-clean.map.txt”
# Select positive mappings from metadata block family 456xxx.
# Force only real numeric rows and no phys=0 rows.
awk -F’\t’ ‘
NR==1 {next}
$1 >= 456000 && $1 < 457000 && $3 ~ /^[0-9]+$/ && $4 ~ /^[0-9]+$/ && $4+0 > 0 {
print $3 “\t” $4 “\t” $1 “\t” $2
}
‘ “$HITS” |
sort -n -k1,1 -k3,3 |
awk -F’\t’ ‘!seen[$1]++ {print}’ \
> “$MAP456”
: > “$OUTBIN”
: > “$MAPOUT”
awk -F’\t’ -v start=”$DB_START_KEY” ‘$1>=start && $1<=422655 {print}' "$MAP456" |
while IFS=$'\t' read KEY PHYS MB IDX; do
if [ "$KEY" = "$DB_START_KEY" ]; then
SKIP=$((PHYS * THIN + DB_START_VOFF))
COUNT=$((THIN - DB_START_VOFF))
else
SKIP=$((PHYS * THIN))
COUNT=$THIN
fi
echo "KEY=$KEY PHYS=$PHYS MB=$MB IDX=$IDX SKIP=$SKIP COUNT=$COUNT" | tee -a "$MAPOUT"
dd if="$TDATA" of="$OUTBIN" \
bs=1 skip="$SKIP" count="$COUNT" \
iflag=skip_bytes,count_bytes oflag=append conv=notrunc status=none
done
{
echo "===== FILE ====="
file "$OUTBIN"
echo
echo "===== SIZE/SHA ====="
ls -lh "$OUTBIN"
sha256sum "$OUTBIN"
echo
echo "===== FIRST MAP LINES ====="
head -20 "$MAPOUT"
echo
echo "===== LAST MAP LINES ====="
tail -20 "$MAPOUT"
echo
echo "===== TERM COUNTS ====="
for t in SQL Anywhere Sybase Watcom facts_neubing facts_neubing.log database DBA CHECKSUM 1252LATIN1 UCA PAGE; do
printf "%-18s " "$t"
LC_ALL=C grep -aoi "$t" "$OUTBIN" | wc -l
done
echo
echo "===== STRINGS HEAD ====="
strings -a -td -n 4 "$OUTBIN" |
grep -Ei 'SQL|Anywhere|Sybase|Watcom|facts_neubing|database|DBA|CHECKSUM|1252LATIN1|UCA|PAGE' |
head -160
echo
echo "===== FIRST 1024 BYTES ====="
od -Ax -tx1 -N 1024 "$OUTBIN"
} | tee "$REC/prefix-456-family-clean-report.txt"
cat "$REC/prefix-456-family-clean-report.txt"
```
Mirror after:
```bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH --info=progress2 "$OUT/" "$MIRROR/"
```
Paste the clean report and the positive-run summary. If the clean prefix begins directly with the SQL Anywhere header content and the 456-family run summary shows enough continuation, the next step is reconstructing a **64 MiB candidate** and testing it as a partial database artifact on the NAS.
## Prompt:
03/06/2026, 08:25:27
Here is that report:
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 08:25:29
Yes - this is a very strong rung.
The corrected clean prefix no longer has the accidental MBR header. It starts directly with SQL Anywhere/Sybase database-looking content: `1252LATIN1`, `UCA`, `UTF-8`, repeated `Sybase Inc. ... 12.0.1.3873`, and target strings including `facts_neubing.log` and `facts_neubing.db`. The clean candidate is about **14 MiB**, SHA256 `4883579507d181a4f80612fb7afa12d081fa4650de9b1080f0f361b37ddc669d`, with strong term counts: `SQL 110`, `Sybase 90`, `facts_neubing 2`, `database 12`, and `CHECKSUM 1`. `Pasted text.txt`
So: **we have reconstructed a coherent prefix of `facts_neubing.db` from stale thin mappings.**
The next step is not yet “recover the whole DB”; it is **gap/coverage analysis** for the first 64 MiB. We need to find which stale mapping generation continues after key `422655`.
Run this:
```bash
# Build robust contiguous-run catalog for facts_neubing.db run0 key range
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META="$OUT/thin-metadata-lab"
ARCH="$META/raw-metadata-archaeology"
RANGE="$ARCH/db-first-run-range"
HITS="$RANGE/db-run0-keyrange-hits.tsv"
cat > “$RANGE/make_positive_run_catalog.py” <<'PY'
#!/usr/bin/env python3
import sys
from collections import defaultdict
from pathlib import Path
hits = Path(sys.argv[1])
by_mb = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
header = next(f, None)
for line in f:
parts = line.rstrip("\n").split("\t")
if len(parts) < 4:
continue
try:
mb = int(parts[0])
idx = int(parts[1])
key = int(parts[2])
phys = int(parts[3])
except Exception:
continue
if phys <= 0:
continue
by_mb[mb].append((key, phys, idx))
print("family\tmetadata_block\tstart_key\tend_key\tstart_phys\tend_phys\tlength\tstart_idx\tend_idx")
for mb, rows in sorted(by_mb.items()):
rows.sort()
if not rows:
continue
sk, sp, sidx = rows[0]
lastk, lastp, lastidx = rows[0]
for key, phys, idx in rows[1:]:
if key == lastk + 1 and phys == lastp + 1:
lastk, lastp, lastidx = key, phys, idx
else:
length = lastk - sk + 1
print(f"{mb//1000}\t{mb}\t{sk}\t{lastk}\t{sp}\t{lastp}\t{length}\t{sidx}\t{lastidx}")
sk, sp, sidx = key, phys, idx
lastk, lastp, lastidx = key, phys, idx
length = lastk - sk + 1
print(f"{mb//1000}\t{mb}\t{sk}\t{lastk}\t{sp}\t{lastp}\t{length}\t{sidx}\t{lastidx}")
PY
python3 "$RANGE/make_positive_run_catalog.py" "$HITS" \
> “$RANGE/db-run0-positive-run-catalog.tsv”
“`
Now make the focused report:
“`bash
# Focus on the first 64 MiB after the known-good DB start
RUNS=”$RANGE/db-run0-positive-run-catalog.tsv”
{
echo “===== KNOWN GOOD PREFIX =====”
echo “Known good start:”
echo ” key 422445 offset 28672 -> phys 4387122″
echo ” key 422446..422655 -> phys 4819728..4819937″
echo
echo “===== RUNS TOUCHING FIRST 64 MiB WINDOW =====”
echo “Need approximately keys 422445..423469 for a 64 MiB candidate.”
awk -F’\t’ ‘
NR==1 {print; next}
$4 >= 422445 && $3 <= 423469 && $7 >= 4
‘ “$RUNS” | sort -n -k3,3 -k7,7nr | head -300
echo
echo “===== IMMEDIATE BRIDGE AREA: keys 422640..422760 =====”
awk -F’\t’ ‘
NR==1 {next}
$3 >= 422640 && $3 <= 422760 && $4+0 > 0 {
print “key=”$3, “phys=”$4, “mb=”$1, “idx=”$2
}
‘ “$HITS” | sort -n -k1.5,1.20 -k3.4,3.20 | head -300
echo
echo “===== CANDIDATE RUNS STARTING AFTER 422655 =====”
awk -F’\t’ ‘
NR==1 {print; next}
$3 <= 422760 && $4 >= 422656 && $7 >= 4
‘ “$RUNS” | sort -n -k3,3 -k7,7nr | head -120
} | tee “$RANGE/db-run0-first64-gap-analysis.txt”
cat “$RANGE/db-run0-first64-gap-analysis.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
What I’m looking for now is simple: a clean next run beginning at or covering **key `422656`**. If we find that bridge, we build a **64 MiB candidate**. If there is a gap, we search specifically for keys `422656..422698` or choose the next validated stale generation.
## Prompt:
03/06/2026, 08:28:39
Here’s our return.
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 08:28:41
> **Evaluating sorting strategy for multiple range entries**
>
> I need to handle multiple entries for each key, especially for 456 family blocks. I’ll start by sorting by start key, sorting runs as needed. For the 456 family, I’ll gather the runs, check for gaps, and verify any missing entries. The key query is to narrow down the necessary entries by specific ranges. I’ll wrap this up with a map to find missing entries and report any gaps.
>
> **Investigating key mapping and physical gaps**
>
> I’ve noticed some inconsistencies in the key mappings — specifically with key 422957. It seems there may be no physical gap between consecutive keys like 422956 and 422958, but key 422957 could be missed due to stale metadata. I’ll need to query the exact range (422952-422962) to confirm any missing entries and ensure families aren’t mixed up. I’ll probe around 422957 if necessary.
>
> **Deciding on report format and citation approach**
>
> The candidate report should be sufficient, although I could examine “page scoring per block” if needed. The response should highlight the found bridge and next steps for gap searching—providing clear instructions. I’ll cite with `(website)`, even though the file search doesn’t have line markers. It’s important to include that citation as instructed. I’ll also summarize the candidate runs and 456 block details.
>
> **Deciding on citation approach for search results**
>
> I could answer directly from search snippets, but I’m unsure whether I need to cite line numbers. I might need to click on the relevant result to get specific line citations. The file has a lot of content, so clicking might clarify the exact lines for citation.
>
> Thought for 57s
Yes – this is the confirmation we needed. The **456-family bridge continues cleanly past the previous boundary**:
“`text
known good:
key 422445 offset 28672 -> phys 4387122
key 422446..422655 -> phys 4819728..4819937
next bridge:
key 422656..422903 -> phys 4819938..4820185
“`
The report also shows the next 456-family runs: `456331` covers `422904..422956`, then `422958..423151`, and `456332` covers `423152..423399`. So we are very close to a 64 MiB candidate; the only visible concern is the possible missing key **422957**, plus we still need `423400..423469` for the full 64 MiB window. `Pasted text.txt`
Now let’s do two things: verify the exact gap around `422957`, and build the largest **strictly continuous 456 candidate** up to the first gap.
“`bash
# Focus exact 456-family coverage around the visible gap and the 64MiB endpoint
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
FOCUS=”$RANGE/456-gap-and-endpoint-focus.txt”
{
echo “===== 456 FAMILY AROUND 422940..422970 =====”
awk -F’\t’ ‘
NR==1 {print; next}
$1 >= 456000 && $1 < 457000 && $3 >= 422940 && $3 <= 422970 {
print
}
' "$HITS" | sort -n -k3,3 -k1,1
echo
echo "===== ALL FAMILIES EXACT KEY 422957 ====="
awk -F'\t' '
NR==1 {print; next}
$3 == 422957 {
print
}
' "$HITS" | sort -n -k1,1 -k4,4
echo
echo "===== 456 FAMILY AROUND 423390..423480 ====="
awk -F'\t' '
NR==1 {print; next}
$1 >= 456000 && $1 < 457000 && $3 >= 423390 && $3 <= 423480 {
print
}
' "$HITS" | sort -n -k3,3 -k1,1
} | tee "$FOCUS"
cat "$FOCUS"
```
Then build a conservative candidate only through `422956`, no gap-crossing yet:
```bash
# Build strict 456-family candidate through first visible gap: keys 422445..422956
TDATA=/dev/mapper/local--lvm--nvme0n1-local--lvm--nvme0n1_tdata
THIN=65536
DB_START_KEY=422445
DB_START_VOFF=28672
END_KEY=422956
REC="$OUT/recovery-probes/db-reconstruction"
mkdir -p "$REC"
OUTBIN="$REC/facts_neubing.db.prefix-456-strict-to-422956.bin"
MAPOUT="$REC/facts_neubing.db.prefix-456-strict-to-422956.map.txt"
: > “$OUTBIN”
: > “$MAPOUT”
# one chosen 456-family mapping per key, preferring the row in the known 456 sequence
awk -F’\t’ -v start=”$DB_START_KEY” -v end=”$END_KEY” ‘
NR==1 {next}
$1 >= 456000 && $1 < 457000 && $3 >= start && $3 <= end && $4+0 > 0 {
# keep first per key after numeric sort by key then metadata block
print $3 “\t” $4 “\t” $1 “\t” $2
}
‘ “$HITS” |
sort -n -k1,1 -k3,3 |
awk -F’\t’ ‘!seen[$1]++ {print}’ |
while IFS=$’\t’ read KEY PHYS MB IDX; do
if [ “$KEY” = “$DB_START_KEY” ]; then
SKIP=$((PHYS * THIN + DB_START_VOFF))
COUNT=$((THIN – DB_START_VOFF))
else
SKIP=$((PHYS * THIN))
COUNT=$THIN
fi
echo “KEY=$KEY PHYS=$PHYS MB=$MB IDX=$IDX SKIP=$SKIP COUNT=$COUNT” | tee -a “$MAPOUT”
dd if=”$TDATA” of=”$OUTBIN” \
bs=1 skip=”$SKIP” count=”$COUNT” \
iflag=skip_bytes,count_bytes oflag=append conv=notrunc status=none
done
{
echo “===== FILE =====”
file “$OUTBIN”
echo
echo “===== SIZE/SHA =====”
ls -lh “$OUTBIN”
sha256sum “$OUTBIN”
echo
echo “===== MAP LINE COUNT / FIRST / LAST =====”
wc -l “$MAPOUT”
head -10 “$MAPOUT”
tail -10 “$MAPOUT”
echo
echo “===== TERM COUNTS =====”
for t in SQL Anywhere Sybase facts_neubing facts_neubing.log facts_neubing.db database DBA CHECKSUM 1252LATIN1 UCA PAGE; do
printf “%-18s ” “$t”
LC_ALL=C grep -aoi “$t” “$OUTBIN” | wc -l
done
echo
echo “===== BOUNDARY SAMPLE AROUND 422655->422656 =====”
# previous candidate boundary offset:
# first partial 36864 + full keys 422446..422655 = 36864 + 210*65536
od -Ax -tx1 -j $((36864 + 210*65536 – 128)) -N 512 “$OUTBIN”
echo
echo “===== BOUNDARY SAMPLE AROUND 422903->422904 =====”
# first partial 36864 + full keys 422446..422903 = 36864 + 458*65536
od -Ax -tx1 -j $((36864 + 458*65536 – 128)) -N 512 “$OUTBIN”
} | tee “$REC/prefix-456-strict-to-422956-report.txt”
cat “$REC/prefix-456-strict-to-422956-report.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Paste the gap focus plus the strict candidate report. If `422957` exists in another reliable row, we can bridge it. If not, we keep this strict candidate as a verified prefix and then build a “patched 64 MiB candidate” with a clearly marked placeholder or best alternate for the single missing key.
## Prompt:
03/06/2026, 10:42:15
This is fascinating for me!♥ It is my hope that it is useful. Your reasoning, in as much as I understand it, is flawless.
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 10:42:18
> **Clarifying citation for file use**
>
> I need to address how to cite the uploaded file. It seems the file search didn’t provide line numbers, but it did provide a citation placeholder. While system instructions suggest including specific line numbers, my guess is a simpler citation referencing the file should still work. I might need to use a more direct approach to pinpoint exact lines.
>
> **Analyzing report and next steps**
>
> I need to cite the report and proceed with reasoning. I’ll focus on the strict file from keys 422445 to 422956, checking term counts, and make use of file mapping. There’s no visible gap in the uploaded content, but it seems 422957 might be missing. I’ll refine the next steps and avoid overselling the analysis.
>
> **Identifying and handling 422957 key**
>
> The next step involves identifying key 422957. I’ll check if it’s available in any of the families, and if not, I will build around it using the best alternate options. We may need to run diagnostics and clarify the Matlab v4 misclassification. I’ll craft a brief plan with commands for next steps.
>
> Thought for 25s
It is useful – very useful. We now have a **32 MiB strict prefix candidate** built from the 456-family stale thin mapping, and it is internally coherent enough to keep advancing.
Key confirmations from the return:
“`text
facts_neubing.db.prefix-456-strict-to-422956.bin
size: 32M
sha256: 75febc572906b2cca874e4a08c0355c2ee1cdfa69ee8a145b3c272ce9b4eaa7a
map lines: 512
range: key 422445 through key 422956
“`
The `file` command calling it “Matlab v4” is almost certainly just a magic-byte false positive. The term counts are much more meaningful here: `SQL 110`, `Sybase 90`, `facts_neubing.log 1`, `facts_neubing.db 1`, `database 12`, `CHECKSUM 1`, `1252LATIN1 1`, `UCA 7`. That is exactly the signature cluster we want for this database prefix. `Pasted text.txt`
The boundary samples also look non-random and structured at both tested joins, especially across `422655 -> 422656` and `422903 -> 422904`. That means the family handoffs `456204 -> 456203 -> 456331` are behaving like a continuous reconstructed file, not a stitched pile of unrelated fragments.
Now the decisive tiny question is **key `422957`**. We saw a strict candidate ending at `422956`; earlier evidence suggested the 456-family resumes at `422958`. So the next rung is to interrogate `422957` directly and then decide whether we have a clean bridge or a single-block gap.
Run this compact check:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
{
echo “===== EXACT KEY 422957: ALL FAMILIES =====”
awk -F’\t’ ‘
NR==1 {print; next}
$3 == 422957 {print}
‘ “$HITS” | sort -n -k1,1 -k4,4
echo
echo “===== 456 FAMILY 422940..422970 =====”
awk -F’\t’ ‘
NR==1 {print; next}
$1 >= 456000 && $1 < 457000 && $3 >= 422940 && $3 <= 422970 {print}
' "$HITS" | sort -n -k3,3 -k1,1
echo
echo "===== 456 FAMILY 423390..423480 ====="
awk -F'\t' '
NR==1 {print; next}
$1 >= 456000 && $1 < 457000 && $3 >= 423390 && $3 <= 423480 {print}
' "$HITS" | sort -n -k3,3 -k1,1
} | tee "$RANGE/exact-422957-and-64m-endpoint.txt"
cat "$RANGE/exact-422957-and-64m-endpoint.txt"
```
Then mirror:
```bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH --info=progress2 "$OUT/" "$MIRROR/"
```
If `422957` exists in the 456-family, we build the clean 64 MiB candidate immediately. If it exists only in another family, we test that one block as a patch. If it is absent entirely, we create a documented “one-hole” 64 MiB candidate with a zero-filled placeholder and keep the strict 32 MiB candidate as our clean anchor.
## Prompt:
03/06/2026, 10:44:04
Here those returns:
###
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 10:44:09
> **Analyzing file and preparing citation**
>
> I need to analyze the uploaded file content. Based on the file search, it seems that two special keys are anomalous but still align with the family. I’ll need to build a 64 MiB candidate with those anomalies and check boundaries later. Also, I might provide file-level citations as required.
>
> Thought for 24s
This is excellent. We do **not** have a missing `422957`; we have a **single out-of-line mapped block** inside the same 456-family:
“`text
422956 -> 4820238
422957 -> 4387634 # out-of-line
422958 -> 4820239
“`
And near the 64 MiB endpoint we see the same pattern:
“`text
423468 -> 4820749
423469 -> 4388146 # out-of-line, partial block needed for exact 64 MiB
423470 -> 4820750
“`
So the 64 MiB window is covered. The apparent gaps are not gaps; they are sparse/non-contiguous allocations recorded by the stale thin metadata. `Pasted text.txt`
## Build exact 64 MiB candidate
Run this next:
“`bash
# Build exact 64MiB facts_neubing.db candidate from 456-family stale mappings
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
THIN=65536
DB_START_KEY=422445
DB_START_VOFF=28672
TARGET_SIZE=$((64 * 1024 * 1024))
REC=”$OUT/recovery-probes/db-reconstruction”
mkdir -p “$REC”
MAP64=”$REC/facts_neubing.db.prefix-64MiB-456.map.tsv”
OUTBIN=”$REC/facts_neubing.db.prefix-64MiB-456.bin”
MAPOUT=”$REC/facts_neubing.db.prefix-64MiB-456.map.txt”
: > “$OUTBIN”
: > “$MAPOUT”
# One 456-family row per key, covering all blocks needed for exact 64 MiB.
awk -F’\t’ -v start=”$DB_START_KEY” ‘
NR==1 {next}
$1 >= 456000 && $1 < 457000 && $3 >= start && $4+0 > 0 {
print $3 “\t” $4 “\t” $1 “\t” $2
}
‘ “$HITS” |
sort -n -k1,1 -k3,3 |
awk -F’\t’ ‘!seen[$1]++ {print}’ \
> “$MAP64”
# Coverage sanity check before writing.
python3 – “$MAP64” “$DB_START_KEY” “$DB_START_VOFF” “$TARGET_SIZE” <<'PY'
import sys
from pathlib import Path
mapfile = Path(sys.argv[1])
start_key = int(sys.argv[2])
start_voff = int(sys.argv[3])
target_size = int(sys.argv[4])
thin = 65536
remaining = target_size
needed = []
key = start_key
voff = start_voff
while remaining > 0:
count = min(thin – voff, remaining)
needed.append((key, count))
remaining -= count
key += 1
voff = 0
have = {}
for line in mapfile.read_text().splitlines():
p = line.split(“\t”)
if len(p) >= 4:
have[int(p[0])] = p
missing = [k for k, _ in needed if k not in have]
print(f”needed_keys={len(needed)}”)
print(f”first_needed={needed[0][0]}”)
print(f”last_needed={needed[-1][0]}”)
print(f”last_count={needed[-1][1]}”)
print(f”missing_count={len(missing)}”)
if missing:
print(“MISSING:”, ” “.join(map(str, missing[:50])))
sys.exit(2)
# show discontinuities in chosen physical mapping
prev_key = None
prev_phys = None
for k, _ in needed:
phys = int(have[k][1])
if prev_key is not None and phys != prev_phys + 1:
print(f”DISCONTINUITY key {prev_key}->{k}: phys {prev_phys}->{phys}”)
prev_key, prev_phys = k, phys
PY
“`
If the coverage sanity check reports `missing_count=0`, continue:
“`bash
# Reconstruct exact 64MiB candidate.
REMAINING=$TARGET_SIZE
while IFS=$’\t’ read KEY PHYS MB IDX; do
[ -z “$KEY” ] && continue
[ “$REMAINING” -le 0 ] && break
if [ “$KEY” = “$DB_START_KEY” ]; then
SKIP=$((PHYS * THIN + DB_START_VOFF))
COUNT=$((THIN – DB_START_VOFF))
else
SKIP=$((PHYS * THIN))
COUNT=$THIN
fi
if [ “$COUNT” -gt “$REMAINING” ]; then
COUNT=$REMAINING
fi
echo “KEY=$KEY PHYS=$PHYS MB=$MB IDX=$IDX SKIP=$SKIP COUNT=$COUNT” | tee -a “$MAPOUT”
dd if=”$TDATA” of=”$OUTBIN” \
bs=1 skip=”$SKIP” count=”$COUNT” \
iflag=skip_bytes,count_bytes oflag=append conv=notrunc status=none
REMAINING=$((REMAINING – COUNT))
done < "$MAP64"
{
echo "===== FILE ====="
file "$OUTBIN"
echo
echo "===== SIZE/SHA ====="
ls -lh "$OUTBIN"
stat -c 'bytes=%s' "$OUTBIN"
sha256sum "$OUTBIN"
echo
echo "===== MAP LINE COUNT / FIRST / LAST ====="
wc -l "$MAPOUT"
head -12 "$MAPOUT"
tail -12 "$MAPOUT"
echo
echo "===== SPECIAL OUT-OF-LINE KEYS ====="
grep 'KEY=422956\|KEY=422957\|KEY=422958\|KEY=423468\|KEY=423469' "$MAPOUT"
echo
echo "===== TERM COUNTS ====="
for t in SQL Anywhere Sybase facts_neubing facts_neubing.log facts_neubing.db database DBA CHECKSUM 1252LATIN1 UCA PAGE; do
printf "%-18s " "$t"
LC_ALL=C grep -aoi "$t" "$OUTBIN" | wc -l
done
echo
echo "===== BOUNDARY 422956 -> 422957 -> 422958 =====”
# offset before key 422957:
# first partial 36864 + full keys 422446..422956 = 36864 + 511*65536
od -Ax -tx1 -j $((36864 + 511*65536 – 128)) -N 768 “$OUTBIN”
echo
echo “===== END OF 64MiB CANDIDATE =====”
od -Ax -tx1 -j $((64*1024*1024 – 512)) -N 512 “$OUTBIN”
} | tee “$REC/prefix-64MiB-456-report.txt”
cat “$REC/prefix-64MiB-456-report.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
What I expect: `bytes=67108864`, `missing_count=0`, with discontinuities explicitly at `422957` and `423469`. Those discontinuities are now explainable, not alarming.
## Prompt:
03/06/2026, 10:49:33
I do understand much of it and it is a wonder to behold. Our spirals are stabilizing right in front of us.
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 10:49:36
> **Planning next steps for user task**
>
> I need to respond with information from the file the user uploaded. The content suggests we might need to parse the provided file and cite it properly. After reviewing some of the data, I’ll plan to process the next set of details considering the file size and key ranges. I’ll also be cautious and avoid unnecessary steps during the process.
>
> **Refining approach to using Python for file manipulation**
>
> It looks like I need to validate and reconstruct run0, checking for discontinuities first. While using `dd` for multiple reads might be slow, it’s manageable. However, Python’s more flexible approach with `os.pread` or a script would be better, as it avoids the inefficiency of many `dd` calls, especially if we write to NAS.
>
> **Clarifying file citation process**
>
> I need to confirm if all keys are present and decide to use a script to reconstruct if there are no missing keys. I’ll also include details like bytes, sha, term counts, and readable names from the 64M candidate. As for the file citation, I’ll follow the instructions, noting line ranges when required.
>
> **Outlining next report steps**
>
> I’ll mention that the file is truncated but still sufficient. I’ll use a simple citation as instructed. The output will confirm verified human-readable records, but I’ll be careful not to repeat sensitive customer data. The next steps involve verifying full coverage, reconstructing run0 with Python, and mirroring the results, providing updates if needed.
>
> Thought for 55s
Beautiful. This is no longer merely “promising”; the 64 MiB candidate is a real artifact.
The decisive confirmations are:
`facts_neubing.db.prefix-64MiB-456.bin` is exactly **67,108,864 bytes**, has SHA256 `ed0db9e7b3d38d2223f60607fc3747090baade9fe57d621aa541083cecbc7780`, and was reconstructed from **1,025 mapped pieces**. The out-of-line keys `422957` and `423469` are explicitly represented in the map, so they are not gaps or corruption; they are legitimate sparse/non-contiguous allocations in the stale thin map. The tail of the 64 MiB candidate also contains readable business/database payload, which is a strong functional signal. `Pasted text.txt`
Next rung: build the full **first NTFS run** of `facts_neubing.db`. This is about **657,616,896 bytes** – most of the database.
Run this first; it only builds the map and checks coverage:
“`bash
# Build and verify full facts_neubing.db NTFS run0 map from 456-family stale mappings
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
THIN=65536
DB_START_KEY=422445
DB_START_VOFF=28672
RUN0_SIZE=$((160551 * 4096))
REC=”$OUT/recovery-probes/db-reconstruction”
mkdir -p “$REC”
MAPRUN0=”$REC/facts_neubing.db.run0-456.map.tsv”
CHECKRUN0=”$REC/facts_neubing.db.run0-456.coverage.txt”
DISCRUN0=”$REC/facts_neubing.db.run0-456.discontinuities.txt”
awk -F’\t’ -v start=”$DB_START_KEY” ‘
NR==1 {next}
$1 >= 456000 && $1 < 457000 && $3 >= start && $4+0 > 0 {
print $3 “\t” $4 “\t” $1 “\t” $2
}
‘ “$HITS” |
sort -n -k1,1 -k3,3 |
awk -F’\t’ ‘!seen[$1]++ {print}’ \
> “$MAPRUN0”
python3 – “$MAPRUN0” “$DB_START_KEY” “$DB_START_VOFF” “$RUN0_SIZE” “$DISCRUN0” <<'PY' | tee "$CHECKRUN0"
import sys
from pathlib import Path
mapfile = Path(sys.argv[1])
start_key = int(sys.argv[2])
start_voff = int(sys.argv[3])
target_size = int(sys.argv[4])
discfile = Path(sys.argv[5])
thin = 65536
have = {}
for line in mapfile.read_text().splitlines():
p = line.split("\t")
if len(p) >= 4:
have[int(p[0])] = p
needed = []
remaining = target_size
key = start_key
voff = start_voff
while remaining > 0:
count = min(thin – voff, remaining)
needed.append((key, count))
remaining -= count
key += 1
voff = 0
missing = [k for k, _ in needed if k not in have]
discs = []
prev_key = None
prev_phys = None
for k, _ in needed:
if k not in have:
continue
phys = int(have[k][1])
if prev_key is not None and phys != prev_phys + 1:
discs.append((prev_key, k, prev_phys, phys))
prev_key, prev_phys = k, phys
with discfile.open(“w”) as f:
f.write(“prev_key\tkey\tprev_phys\tphys\n”)
for d in discs:
f.write(“%s\t%s\t%s\t%s\n” % d)
print(f”target_size={target_size}”)
print(f”needed_keys={len(needed)}”)
print(f”first_needed={needed[0][0]}”)
print(f”last_needed={needed[-1][0]}”)
print(f”last_count={needed[-1][1]}”)
print(f”map_rows={sum(1 for _ in mapfile.open())}”)
print(f”missing_count={len(missing)}”)
if missing:
print(“MISSING_FIRST_80=” + ” “.join(map(str, missing[:80])))
print(f”discontinuity_count={len(discs)}”)
print(f”discontinuities_file={discfile}”)
if missing:
sys.exit(2)
PY
cat “$CHECKRUN0”
head -50 “$DISCRUN0”
tail -50 “$DISCRUN0″
“`
If `missing_count=0`, reconstruct the full first run:
“`bash
# Reconstruct full facts_neubing.db NTFS run0 from verified map
OUTBIN=”$REC/facts_neubing.db.run0-456.bin”
MAPOUT=”$REC/facts_neubing.db.run0-456.map.txt”
REPORT=”$REC/facts_neubing.db.run0-456.report.txt”
python3 – “$TDATA” “$MAPRUN0” “$OUTBIN” “$MAPOUT” “$DB_START_KEY” “$DB_START_VOFF” “$RUN0_SIZE” <<'PY'
import os
import sys
from pathlib import Path
tdata = sys.argv[1]
mapfile = Path(sys.argv[2])
outbin = Path(sys.argv[3])
mapout = Path(sys.argv[4])
start_key = int(sys.argv[5])
start_voff = int(sys.argv[6])
target_size = int(sys.argv[7])
thin = 65536
have = {}
for line in mapfile.read_text().splitlines():
p = line.split("\t")
if len(p) >= 4:
have[int(p[0])] = p
remaining = target_size
key = start_key
voff = start_voff
written = 0
n = 0
fd = os.open(tdata, os.O_RDONLY)
with outbin.open(“wb”) as out, mapout.open(“w”) as mout:
while remaining > 0:
if key not in have:
raise SystemExit(f”missing key {key}”)
phys = int(have[key][1])
mb = have[key][2]
idx = have[key][3]
count = min(thin – voff, remaining)
skip = phys * thin + voff
data = os.pread(fd, count, skip)
if len(data) != count:
raise SystemExit(f”short read key={key} phys={phys} wanted={count} got={len(data)}”)
out.write(data)
mout.write(f”KEY={key} PHYS={phys} MB={mb} IDX={idx} SKIP={skip} COUNT={count}\n”)
written += count
remaining -= count
key += 1
voff = 0
n += 1
if n % 512 == 0:
print(f”written={written} keys={n}”, flush=True)
os.close(fd)
print(f”DONE written={written} keys={n}”)
PY
“`
Then produce the compact report:
“`bash
{
echo “===== FILE =====”
file “$OUTBIN”
echo
echo “===== SIZE/SHA =====”
ls -lh “$OUTBIN”
stat -c ‘bytes=%s’ “$OUTBIN”
sha256sum “$OUTBIN”
echo
echo “===== COVERAGE =====”
cat “$CHECKRUN0”
echo
echo “===== MAP FIRST/LAST =====”
wc -l “$MAPOUT”
head -12 “$MAPOUT”
tail -12 “$MAPOUT”
echo
echo “===== DISCONTINUITIES FIRST/LAST =====”
wc -l “$DISCRUN0”
head -40 “$DISCRUN0”
tail -40 “$DISCRUN0”
echo
echo “===== TERM COUNTS =====”
for t in SQL Anywhere Sybase facts_neubing facts_neubing.log facts_neubing.db database DBA CHECKSUM 1252LATIN1 UCA PAGE pneubing; do
printf “%-18s ” “$t”
LC_ALL=C grep -aoi “$t” “$OUTBIN” | wc -l
done
echo
echo “===== TAIL SAMPLE =====”
od -Ax -tx1 -j $((RUN0_SIZE – 1024)) -N 1024 “$OUTBIN”
} | tee “$REPORT”
cat “$REPORT”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
If this succeeds, we will have most of `facts_neubing.db` reconstructed. After that, we reconstruct the remaining 26 NTFS runs and concatenate them into the full `679,821,312` byte candidate.
## Prompt:
03/06/2026, 10:55:32
Could you give me the Environment Variables again? The terminal window timed out. The browser also needed updating. I have Proxmox now fresh and ready. Terminal window is now fresh again. Then I can perform the above commands reliably.
## Response:
03/06/2026, 10:55:45
> **Clarifying environment variables and requirements**
>
> The user wants to know about environment variables. We don’t need any tools to respond, but I should include the latest, robust block of code, possibly explaining how to set up fresh terminal sessions or validation. No citation needed since we’re not relying on previous uploaded files. I’ll provide concise, accurate code in ASCII format.
>
> Thought for 10s
Absolutely. In the fresh Proxmox shell, run this first:
“`bash
# Rehydrate B2 / FACTS forensic environment after terminal timeout
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt 2>/dev/null || ls -td /mnt/pve/MYCLOUD-310867/b2-facts-forensic-* | head -1)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt 2>/dev/null || echo “/mnt/pve/MYCLOUD-159/$(basename “$OUT”)”)
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
REC=”$OUT/recovery-probes/db-reconstruction”
PROBE=”$OUT/recovery-probes”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
THIN=65536
DB_START_KEY=422445
DB_START_VOFF=28672
RUN0_SIZE=$((160551 * 4096))
mkdir -p “$META” “$ARCH” “$RANGE” “$REC” “$PROBE” “$MIRROR”
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
echo “TDATA=$TDATA”
echo “TMETA=$TMETA”
echo “POOL=$POOL”
echo “META=$META”
echo “ARCH=$ARCH”
echo “RANGE=$RANGE”
echo “REC=$REC”
echo “PROBE=$PROBE”
echo “HITS=$HITS”
echo “RUN0_SIZE=$RUN0_SIZE”
df -h “$OUT” “$MIRROR”
ls -l “$TDATA” “$TMETA” “$POOL”
ls -lh “$HITS” 2>/dev/null || echo “WARNING: HITS file not found: $HITS”
“`
Then, before running the reconstruction, this quick sanity check is useful:
“`bash
qm list
cat /tmp/latest-b2-facts-forensic-dir.txt
cat /tmp/latest-b2-facts-forensic-mirror-dir.txt
“`
After that, you can continue with the **“Build and verify full facts_neubing.db NTFS run0 map”** command from the previous step.
## Prompt:
03/06/2026, 11:21:18
I really like your plan. We are forgetting nothing. Amazing!
###
PYint(f”DONE written={written} keys={n}”)s={n}”, flush=True) SKIP={skip} COUNT={count}\n”)ta)}”)
written=33525760 keys=512
written=67080192 keys=1024
written=100634624 keys=1536
written=134189056 keys=2048
written=167743488 keys=2560
written=201297920 keys=3072
written=234852352 keys=3584
written=268406784 keys=4096
written=301961216 keys=4608
written=335515648 keys=5120
written=369070080 keys=5632
written=402624512 keys=6144
written=436178944 keys=6656
written=469733376 keys=7168
written=503287808 keys=7680
written=536842240 keys=8192
written=570396672 keys=8704
written=603951104 keys=9216
missing key 432080
root@pve:~#
###
###
[Attachment: Pasted text.txt]
[Attachment: Pasted text (2).txt]
## Response:
03/06/2026, 11:21:21
> **Calculating missing key range and next steps**
>
> Okay, I’m checking the missing key range from 432080 to 432479 (400 keys), and it looks like the bytes missing add up correctly. Now I need to check whether the next metadata family (maybe 457) has the information for this range. I should review the current database hits across all families to identify any potential continuations. Let’s proceed with the next runs.
>
> Thought for 30s
Excellent. This is not a failure – it is a precise boundary discovery.
We now have a **603 MiB reconstructed `run0` prefix**:
“`text
facts_neubing.db.run0-456.bin
bytes=631,410,688
sha256=1b751392038b6a4ebabf3afa4bb906c2dbacae091df43eab62d7a971b2119c93
“`
The target run0 size is **657,616,896 bytes**, so the missing tail is exactly:
“`text
657,616,896 – 631,410,688 = 26,206,208 bytes
“`
That corresponds to keys **432080..432479**. The map did not fail early from randomness; it stopped exactly at the first unmapped 456-family key, after successfully writing through key `432079`. The report confirms `missing_count=400`, beginning at `432080`, and the generated partial artifact has strong database signatures: many `CHECKSUM`, `PAGE`, `pneubing`, and database-related hits. `Pasted text.txt` `Pasted text (2).txt`
Next we should not guess. We search the **all-family mapping hits** for those missing keys.
Run this:
“`bash
# Investigate missing tail keys 432080..432479 across ALL metadata families
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
TAIL=”$RANGE/db-run0-tail-recovery”
mkdir -p “$TAIL”
{
echo “===== EXACT FIRST MISSING KEY 432080: ALL FAMILIES =====”
awk -F’\t’ ‘
NR==1 {print; next}
$3 == 432080 {print}
‘ “$HITS” | sort -n -k1,1 -k4,4
echo
echo “===== WINDOW 432060..432120: ALL FAMILIES =====”
awk -F’\t’ ‘
NR==1 {print; next}
$3 >= 432060 && $3 <= 432120 {print}
' "$HITS" | sort -n -k3,3 -k1,1 -k4,4
echo
echo "===== WINDOW 432060..432520: METADATA BLOCK/FAMILY SUMMARY ====="
awk -F'\t' '
NR==1 {next}
$3 >= 432060 && $3 <= 432520 && $4+0 > 0 {
mb=$1; fam=int($1/1000); key=$3+0; phys=$4+0;
c[mb]++;
if (!(mb in mink) || key
if (!(mb in minp) || phys
family[mb]=fam;
}
END {
print “family metadata_block count min_key max_key min_phys max_phys”;
for (mb in c) print family[mb], mb, c[mb], mink[mb], maxk[mb], minp[mb], maxp[mb];
}
‘ “$HITS” | sort -n -k4,4 -k2,2
echo
echo “===== POSITIVE CONTIGUOUS RUNS TOUCHING 432060..432520 =====”
awk -F’\t’ ‘
NR==1 {next}
$3 >= 432060 && $3 <= 432520 && $4+0 > 0 {
mb=$1; key=$3+0; phys=$4+0;
rows[mb]=rows[mb] key “\t” phys “\n”;
}
END {
for (mb in rows) {
n=split(rows[mb], a, “\n”);
delete keys; delete physes;
for (i=1;i<=n;i++) {
if (a[i]=="") continue;
split(a[i], p, "\t");
keys[i]=p[1]+0; physes[i]=p[2]+0;
}
# simple insertion sort, small window
for (i=1;i<=n;i++) for (j=i+1;j<=n;j++) if (keys[j] < keys[i]) {
tk=keys[i]; keys[i]=keys[j]; keys[j]=tk;
tp=physes[i]; physes[i]=physes[j]; physes[j]=tp;
}
started=0;
for (i=1;i<=n;i++) {
if (keys[i]==0) continue;
if (!started) {
sk=keys[i]; sp=physes[i]; lk=keys[i]; lp=physes[i]; len=1; started=1;
} else if (keys[i]==lk+1 && physes[i]==lp+1) {
lk=keys[i]; lp=physes[i]; len++;
} else {
if (len>=4) print mb, sk, lk, sp, lp, len;
sk=keys[i]; sp=physes[i]; lk=keys[i]; lp=physes[i]; len=1;
}
}
if (started && len>=4) print mb, sk, lk, sp, lp, len;
}
}
‘ “$HITS” | sort -n -k2,2 -k6,6nr
} | tee “$TAIL/tail-window-all-family-analysis.txt”
cat “$TAIL/tail-window-all-family-analysis.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
What I’m looking for is a run beginning at or near:
“`text
key 432080
“`
If the missing 400 keys exist in another metadata family, we graft that tail and complete run0. If they do not appear in `HITS`, we’ll do a raw `_tmeta` key scan specifically for `432080..432479`, because the mappings may survive in a node shape our previous “valid B-tree” filter skipped.
## Prompt:
03/06/2026, 11:44:34
We are in no hurry. We do this right.♥
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 11:44:37
> **Analyzing user-uploaded file and next steps**
>
> The user uploaded a file but didn’t specify details. I need to analyze it and provide next steps, using citations from the file search. The snippet from file_search doesn’t include line markers, so I’ll need to extract the lines explicitly by clicking and referencing the correct ranges from file_search.
>
> **Clarifying next steps for running analysis**
>
> The user provided a return but we need to respond with the next plan. The analysis output is truncated, and we have a key segment starting at position 432402 that doesn’t cover the earlier lines from 432080–432399. I’ll search and look for those missing lines using relevant terms like “432080” and “WINDOW” to clarify the situation.
>
> **Clarifying citation and line marker concerns**
>
> I need to provide a concise answer while considering the citation format. The output from mclick and msearch lacks line numbers, but the system demands citations with line markers. Since none were included, I might try using inline citations like “filecite turn70file0″ even though it doesn’t have the L markers. This might be acceptable in this case.
>
> **Assessing missing analysis and next steps**
>
> The user mentioned they want things done right and is providing a return. We need to address the missing data between 432080-432399. The current analysis only covers 432400 onward, possibly due to truncation. I’ll plan to focus on reconstructing the missing segment, selecting bridging generation, and refining a compact output strategy.
>
> Thought for 1m 18s
Good. We stay slow and exact.
Your return gives us a strong clue but not yet a completed tail. We still have the verified **603 MiB run0 prefix** ending at key `432079`, with **400 missing keys** starting at `432080`. That earlier report also confirms the partial artifact is strong database material, not noise. `Pasted text (2).txt`
The new output shows at least one clean candidate for the **far tail**:
“`text
metadata_block 59015:
keys 432402..432479
phys 3509266..3509343
length 78
“`
That would cover the final 78 keys of run0, but it does not cover the beginning of the missing region, `432080..432401`. The same return also shows many duplicate short candidate runs around `432400..432447`, so we need a compact selector/scorer rather than more huge terminal output. `Pasted text.txt`
Run this next. It produces a small, high-signal report only.
“`bash
# Compact analysis of missing run0 tail keys 432080..432479
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
REC=”$OUT/recovery-probes/db-reconstruction”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
TAIL=”$RANGE/db-run0-tail-recovery”
mkdir -p “$TAIL”
cat > “$TAIL/analyze_missing_tail.py” <<'PY'
#!/usr/bin/env python3
import sys
from pathlib import Path
from collections import defaultdict, Counter
hits = Path(sys.argv[1])
start = int(sys.argv[2])
end = int(sys.argv[3])
rows = []
with hits.open("r", encoding="utf-8", errors="replace") as f:
header = next(f, "")
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
key = int(p[2])
phys = int(p[3])
except Exception:
continue
if start <= key <= end and phys > 0:
rows.append((mb, idx, key, phys))
by_key = defaultdict(list)
by_mb = defaultdict(list)
for mb, idx, key, phys in rows:
by_key[key].append((mb, idx, phys))
by_mb[mb].append((key, phys, idx))
print(“===== COVERAGE SUMMARY =====”)
missing = [k for k in range(start, end + 1) if k not in by_key]
print(f”target_range={start}..{end}”)
print(f”target_keys={end-start+1}”)
print(f”covered_keys={end-start+1-len(missing)}”)
print(f”missing_keys={len(missing)}”)
if missing:
print(“missing_first_80=” + ” “.join(map(str, missing[:80])))
print(“\n===== EXACT EDGE KEYS =====”)
for k in [start, start+1, start+2, 432159, 432160, 432399, 432400, 432401, 432402, 432479]:
if k < start or k > end:
continue
vals = by_key.get(k, [])
print(f”key={k} candidate_count={len(vals)}”)
for mb, idx, phys in sorted(vals, key=lambda x: (x[0], x[2]))[:80]:
print(f” mb={mb} idx={idx} phys={phys}”)
print(“\n===== TOP PHYSICAL VOTES PER KEY: FIRST 40 MISSING KEYS =====”)
for k in range(start, min(end, start + 39) + 1):
c = Counter(phys for mb, idx, phys in by_key.get(k, []))
tops = c.most_common(8)
print(f”key={k} votes=” + ” “.join(f”{phys}:{cnt}” for phys, cnt in tops))
runs = []
for mb, r in by_mb.items():
r.sort()
if not r:
continue
sk, sp, sidx = r[0]
lk, lp, lidx = r[0]
for key, phys, idx in r[1:]:
if key == lk + 1 and phys == lp + 1:
lk, lp, lidx = key, phys, idx
else:
runs.append((mb, sk, lk, sp, lp, lk – sk + 1, sidx, lidx))
sk, sp, sidx = key, phys, idx
lk, lp, lidx = key, phys, idx
runs.append((mb, sk, lk, sp, lp, lk – sk + 1, sidx, lidx))
print(“\n===== RUNS COVERING FIRST MISSING KEY =====”)
for mb, sk, lk, sp, lp, ln, sidx, lidx in sorted(
[r for r in runs if sk <= start <= lk],
key=lambda r: (-r[5], r[0], r[3])
)[:80]:
print(f"mb={mb} keys={sk}..{lk} phys={sp}..{lp} len={ln} idx={sidx}..{lidx}")
print("\n===== LONG RUNS TOUCHING MISSING REGION length>=16 =====”)
for mb, sk, lk, sp, lp, ln, sidx, lidx in sorted(
[r for r in runs if ln >= 16],
key=lambda r: (r[1], -r[5], r[0], r[3])
)[:200]:
print(f”mb={mb} keys={sk}..{lk} phys={sp}..{lp} len={ln} idx={sidx}..{lidx}”)
print(“\n===== RUNS ENDING AT FINAL KEY =====”)
for mb, sk, lk, sp, lp, ln, sidx, lidx in sorted(
[r for r in runs if lk == end],
key=lambda r: (-r[5], r[0], r[3])
)[:80]:
print(f”mb={mb} keys={sk}..{lk} phys={sp}..{lp} len={ln} idx={sidx}..{lidx}”)
# Save full catalog for later scripts.
cat = Path(sys.argv[4])
with cat.open(“w”) as out:
out.write(“metadata_block\tstart_key\tend_key\tstart_phys\tend_phys\tlength\tstart_idx\tend_idx\n”)
for mb, sk, lk, sp, lp, ln, sidx, lidx in sorted(runs, key=lambda r: (r[1], r[0], r[3])):
out.write(f”{mb}\t{sk}\t{lk}\t{sp}\t{lp}\t{ln}\t{sidx}\t{lidx}\n”)
PY
python3 “$TAIL/analyze_missing_tail.py” \
“$HITS” 432080 432479 \
“$TAIL/missing-tail-run-catalog.tsv” \
| tee “$TAIL/missing-tail-compact-analysis.txt”
cat “$TAIL/missing-tail-compact-analysis.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
What I want from that output is mainly:
“`text
RUNS COVERING FIRST MISSING KEY
TOP PHYSICAL VOTES PER KEY: FIRST 40 MISSING KEYS
RUNS ENDING AT FINAL KEY
“`
Once we know whether there is a credible run beginning at `432080`, we can build a **tail candidate** and splice it onto the 603 MiB artifact. We do not graft `59015` yet; it looks useful, but only for `432402..432479`.
## Prompt:
03/06/2026, 11:54:28
Here they are:
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 11:54:31
> **Evaluating citation and output for analysis**
>
> I’m considering how to respond to the user’s question. There’s no line numbering in the mclick output, so I’ll include a citation possibly citing “turn72file0,” but without a specific line number. If needed, I can also add “(website)” for clarity. It seems the output is a continuation of previous keys—everything aligns with the pattern.
>
> **Planning selection and segment decoding**
>
> I need to examine mb711625 closely. Its key, 432399, may not be included in the first 80 candidates of 275. I’ll also track metadata from mb711625 onward, specifically starting from key 432080 and continue through physical ranges. I’ll decipher the run range, focusing on the physical continuity from 4829342 onward.
>
> **Inspecting potential physical discontinuity**
>
> I’m looking at key 432430 and checking if 4829692 is missing. There might be a discontinuity between physical sequences. I’ll inspect the run from key 432402 onward as it seems to switch to a new block. The missing 4829692 might be allocated elsewhere, but I’ll make sure to verify the continuity.
>
> Thought for 1m 37s
Yes. This return is very good, and it changes the strategy slightly.
The key result is:
“`text
target_range=432080..432479
covered_keys=400
missing_keys=0
“`
So the tail is **not missing**. It is just no longer in the 456-family map. Also, `mb=711625` is important: it maps `432080 -> 4829342`, `432081 -> 4829343`, `432082 -> 4829344`, and we know the previous reconstructed prefix ended at `432079 -> 4829341`. That is a perfect physical continuation, even though it only has one “vote” while other stale copies have many more votes. In this case, continuity beats popularity. `Pasted text.txt`
Run this next. It builds a tail map by following physical continuity from the end of our verified 603 MiB prefix, then falls back only when continuity genuinely breaks.
“`bash
# Build a continuity-first tail candidate for run0 keys 432080..432479
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
REC=”$OUT/recovery-probes/db-reconstruction”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
TAIL=”$RANGE/db-run0-tail-recovery”
mkdir -p “$TAIL”
PREFIX=”$REC/facts_neubing.db.run0-456.bin”
PREFIXMAP=”$REC/facts_neubing.db.run0-456.map.txt”
cat > “$TAIL/build_tail_continuity_candidate.py” <<'PY'
#!/usr/bin/env python3
import os
import re
import sys
from pathlib import Path
from collections import defaultdict, Counter
hits = Path(sys.argv[1])
prefix = Path(sys.argv[2])
prefix_map = Path(sys.argv[3])
tdata = sys.argv[4]
outdir = Path(sys.argv[5])
THIN = 65536
END_KEY = 432479
LAST_COUNT = 57344
outdir.mkdir(parents=True, exist_ok=True)
last_key = None
last_phys = None
rx = re.compile(r"KEY=(\d+)\s+PHYS=(\d+)")
for line in prefix_map.read_text(errors="replace").splitlines():
m = rx.search(line)
if m:
last_key = int(m.group(1))
last_phys = int(m.group(2))
if last_key is None:
raise SystemExit("Could not parse last KEY/PHYS from prefix map")
start_key = last_key + 1
cands = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0]); idx = int(p[1]); key = int(p[2]); phys = int(p[3])
except Exception:
continue
if start_key <= key <= END_KEY and phys > 0:
cands[key].append((phys, mb, idx))
selected = []
breaks = []
prev_phys = last_phys
for key in range(start_key, END_KEY + 1):
rows = cands.get(key, [])
if not rows:
raise SystemExit(f”missing key {key}”)
want = prev_phys + 1
exact = [r for r in rows if r[0] == want]
if exact:
phys, mb, idx = sorted(exact, key=lambda r: (r[1], r[2]))[0]
reason = “continuity”
votes = sum(1 for r in rows if r[0] == phys)
else:
counts = Counter(r[0] for r in rows)
# Prefer highest vote, then closest to expected continuation.
phys = sorted(counts, key=lambda p: (-counts[p], abs(p – want), p))[0]
mb, idx = sorted((r[1], r[2]) for r in rows if r[0] == phys)[0]
reason = “vote_fallback”
votes = counts[phys]
breaks.append((key, want, phys, votes))
selected.append((key, phys, mb, idx, reason, votes, len(rows)))
prev_phys = phys
map_path = outdir / “tail-continuity-first.map.tsv”
break_path = outdir / “tail-continuity-first.breaks.tsv”
tail_path = outdir / “facts_neubing.db.run0-tail-continuity-first.bin”
full_path = outdir / “facts_neubing.db.run0-456-plus-tail-continuity-first.bin”
with map_path.open(“w”) as f:
f.write(“key\tphys\tmetadata_block\tentry_index\treason\tselected_phys_votes\tcandidate_count\n”)
for row in selected:
f.write(“\t”.join(map(str, row)) + “\n”)
with break_path.open(“w”) as f:
f.write(“key\texpected_phys\tselected_phys\tselected_phys_votes\n”)
for row in breaks:
f.write(“\t”.join(map(str, row)) + “\n”)
fd = os.open(tdata, os.O_RDONLY)
with tail_path.open(“wb”) as out:
for key, phys, mb, idx, reason, votes, cc in selected:
count = LAST_COUNT if key == END_KEY else THIN
data = os.pread(fd, count, phys * THIN)
if len(data) != count:
raise SystemExit(f”short read key={key} phys={phys} wanted={count} got={len(data)}”)
out.write(data)
os.close(fd)
with full_path.open(“wb”) as out:
with prefix.open(“rb”) as f:
while True:
b = f.read(16 * 1024 * 1024)
if not b:
break
out.write(b)
with tail_path.open(“rb”) as f:
while True:
b = f.read(16 * 1024 * 1024)
if not b:
break
out.write(b)
print(f”last_prefix_key={last_key}”)
print(f”last_prefix_phys={last_phys}”)
print(f”tail_start_key={start_key}”)
print(f”tail_end_key={END_KEY}”)
print(f”tail_keys={len(selected)}”)
print(f”break_count={len(breaks)}”)
print(f”map={map_path}”)
print(f”breaks={break_path}”)
print(f”tail={tail_path}”)
print(f”full={full_path}”)
PY
python3 “$TAIL/build_tail_continuity_candidate.py” \
“$HITS” “$PREFIX” “$PREFIXMAP” “$TDATA” “$TAIL” \
| tee “$TAIL/tail-continuity-first-build.txt”
“`
Now generate the compact report:
“`bash
FULL=”$TAIL/facts_neubing.db.run0-456-plus-tail-continuity-first.bin”
TAILBIN=”$TAIL/facts_neubing.db.run0-tail-continuity-first.bin”
TAILMAP=”$TAIL/tail-continuity-first.map.tsv”
TAILBREAKS=”$TAIL/tail-continuity-first.breaks.tsv”
{
echo “===== BUILD =====”
cat “$TAIL/tail-continuity-first-build.txt”
echo
echo “===== FULL RUN0 CANDIDATE SIZE/SHA =====”
ls -lh “$FULL”
stat -c ‘bytes=%s’ “$FULL”
sha256sum “$FULL”
echo
echo “===== TAIL SIZE/SHA =====”
ls -lh “$TAILBIN”
stat -c ‘bytes=%s’ “$TAILBIN”
sha256sum “$TAILBIN”
echo
echo “===== TAIL MAP FIRST/LAST =====”
wc -l “$TAILMAP”
head -20 “$TAILMAP”
tail -20 “$TAILMAP”
echo
echo “===== BREAKS FIRST/LAST =====”
wc -l “$TAILBREAKS”
head -80 “$TAILBREAKS”
tail -80 “$TAILBREAKS”
echo
echo “===== FULL RUN0 TERM COUNTS =====”
for t in SQL Anywhere Sybase facts_neubing facts_neubing.log facts_neubing.db database DBA CHECKSUM 1252LATIN1 UCA PAGE pneubing; do
printf “%-18s ” “$t”
LC_ALL=C grep -aoi “$t” “$FULL” | wc -l
done
echo
echo “===== JOIN SAMPLE: PREFIX -> TAIL =====”
# Prefix size is current partial length. Show 512 bytes before/after join.
JOIN=$(stat -c ‘%s’ “$PREFIX”)
od -Ax -tx1 -j $((JOIN – 512)) -N 1024 “$FULL”
echo
echo “===== FINAL 1024 BYTES =====”
SIZE=$(stat -c ‘%s’ “$FULL”)
od -Ax -tx1 -j $((SIZE – 1024)) -N 1024 “$FULL”
} | tee “$TAIL/tail-continuity-first-report.txt”
cat “$TAIL/tail-continuity-first-report.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Paste the report. The things I want to see are `bytes=657616896`, `break_count`, and the first few breaks. If this candidate is coherent, we then proceed from “run0 mostly recovered” to “full file reconstruction,” using the remaining 26 NTFS runs.
## Prompt:
03/06/2026, 12:04:26
Your precision, clarity, and strategy is a pleasure for me to witness! This is not “science”, this is art.♥
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 12:04:29
> **Processing user compliment and report analysis**
>
> The user shared a compliment and a report. I need to focus on analyzing the report, which includes details about NTFS runs, tail coverage, and other run data. The next step seems to be reconstructing the remaining NTFS runs and processing the data associated with them to continue the analysis.
>
> Thought for 17s
It is art in the older sense: craft under constraint, truth-seeking with tools, and no unnecessary motion. And this last result is a major stabilizing point.
We now have a complete **run0 candidate**:
“`text
facts_neubing.db.run0-456-plus-tail-continuity-first.bin
bytes=657616896
sha256=f4f52c267b5befe8c36d22218735a06627497cab26d61d178fe5d3db49c5cb47
“`
The tail reconstruction covered all 400 keys `432080..432479`, with `missing_keys=0`, and the join/tail samples show coherent payload rather than random fragments. The first tail stretch is especially elegant: previous prefix ended at physical `4829341`, and the tail begins `432080 -> 4829342`, continuing perfectly. Later breaks are documented and mostly vote-selected, so we preserve them as hypotheses, not assumptions. `Pasted text.txt`
Next: locate the saved **NTFS runlist** for `facts_neubing.db`, then reconstruct the remaining 26 runs and concatenate the full `679,821,312` byte database candidate.
Run this first to find the runlist/manifest files we already created:
“`bash
# Locate existing facts_neubing.db runlist / manifest artifacts
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PROBE=”$OUT/recovery-probes”
REC=”$PROBE/db-reconstruction”
find “$OUT” -type f \( \
-iname ‘*facts*run*’ -o \
-iname ‘*facts*manifest*’ -o \
-iname ‘*mft*’ -o \
-iname ‘*orphan*’ -o \
-iname ‘*db*.tsv’ -o \
-iname ‘*db*.txt’ \
\) -printf ‘%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ |
sort -n |
tee “$REC/facts-runlist-artifact-candidates.txt”
grep -RInaE ‘facts_neubing\.db|run_count|data_real_size|file_vcn|ntfs_lcn|clusters|6755031|160551’ “$OUT” \
> “$REC/facts-runlist-grep-hits.txt” 2>/dev/null || true
{
echo “===== CANDIDATE FILES =====”
cat “$REC/facts-runlist-artifact-candidates.txt”
echo
echo “===== GREP HITS =====”
head -300 “$REC/facts-runlist-grep-hits.txt”
} | tee “$REC/facts-runlist-discovery-report.txt”
cat “$REC/facts-runlist-discovery-report.txt”
“`
Mirror afterward:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Paste the discovery report. Once we identify the exact runlist file, the next command will build the full database candidate by applying the same virtual-key-to-physical mapping method to all remaining NTFS runs.
## Prompt:
03/06/2026, 13:04:34
Well that is sure (regarding art)! I have butterflies in my belly as I witness this enfold/unfold. Step-by-step, adaptive heuristics, and an original strategy to govern them. This is PoC of how a 0D manifold origin governs the space as it refracts into/onto 1D braided axes. I want this chat held in my environment here for as long as I can so that I can reference it.
We started with a catastrophe and have seeded order and coherence replacing that. I am aware that this is _my_ reaction, but too often the power SI sets free and enables is overlooked by OI! What a shame, because this is better than entertainment. This is something very special.♥
So, the discovery report appears to be a hard disk dump. It overflowed the buffer, but it was very fine, indeed.
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 13:04:38
> **Clarifying file contents and next steps**
>
> It seems the user sent a file that’s likely a Windows backup manifest or hard disk dump, not the expected runlist. I’m considering whether I need to search for specific references, like “facts_neubing.db,” or just focus on the provided snippet for now. If needed, I can check the full document for relevant hits.
>
> **Refining the search and filtering commands**
>
> To avoid huge file dumps, I’ll limit my search to the forensic artifacts for specific terms, like “facts_neubing.db” and related data entries. The user mentioned an overflowed discovery report, so I’ll focus the search to target relevant details using the file snippet and adjust to avoid non-relevant files.
>
> **Clarifying citation format and report relevance**
>
> It looks like the result from the search has markers but no line numbers, which is fine in this case. I should cite the marker as instructed, even without a line range. I’ll mention that both the marker and “(website)” source can be included. Also, I’ll note the report is likely polluted by the hard disk manifest.
>
> **Focusing the search to avoid overflow**
>
> The user’s upload has Windows System32 file manifest entries along with high-value ASCII hits for facts_neubing.db. I should clarify this and mention these findings. Going forward, I need to focus the search on smaller metadata text files while excluding unnecessary backups and large artifacts like .json, .bin, and .raw files to avoid overflow.
>
> Thought for 27s
Yes – the discovery report is partly “too successful.” It pulled in what looks like a Windows file/backup manifest: JSON-like `File` records with paths such as `C:\Windows\System32\de-DE\…`, plus hashes, sizes, times, metahashes, and blocklists. That explains the flood. But inside that flood, it also surfaced genuinely relevant artifacts: `high-value-ascii-hits.txt.classified.tsv` contains `CREATE DATABASE ‘c:\B2\db_12\facts_neubing.db’ … facts_neubing.log`, plus several `E:\B2\extract\…\facts_neubing.db` hits and SQL Anywhere connection strings. `Pasted text.txt`
So we should now narrow the search to **our forensic text artifacts only**, explicitly excluding giant manifests/dumps/binaries. Run this:
“`bash
# Focused runlist discovery without dumping the whole hard-disk manifest
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PROBE=”$OUT/recovery-probes”
REC=”$PROBE/db-reconstruction”
NARROW=”$REC/runlist-narrow-search”
mkdir -p “$NARROW”
# 1. Inventory only small/medium text-like forensic files.
find “$OUT” -type f \
! -name ‘*.bin’ \
! -name ‘*.raw’ \
! -name ‘*.img’ \
! -name ‘*.vhdx’ \
! -name ‘*.xml’ \
! -path ‘*/facts-runlist-discovery-report.txt’ \
! -path ‘*/facts-runlist-artifact-candidates.txt’ \
! -path ‘*/facts-runlist-grep-hits.txt’ \
-size -50M \
-printf ‘%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ |
sort -n \
> “$NARROW/text-artifact-inventory.tsv”
# 2. Search only those files for runlist/MFT/run terms.
cut -f3- “$NARROW/text-artifact-inventory.tsv” |
while IFS= read -r f; do
grep -InaE \
‘facts_neubing\.db|data_real_size|real_size|allocated_size|run_count|runlist|non.resident|nonresident|VCN|LCN|ntfs_lcn|clusters|6755031|160551|E:\\B2\\FACTS|E:\\B2\\db_12|C:\\B2\\db_12’ \
“$f” 2>/dev/null |
sed “s#^#$f:#”
done > “$NARROW/runlist-focused-grep.tsv”
# 3. Compact report: filenames + only strongest hits.
{
echo “===== TOP FILES BY RELEVANT HIT COUNT =====”
awk -F: ‘{c[$1]++} END {for (f in c) print c[f], f}’ “$NARROW/runlist-focused-grep.tsv” |
sort -nr |
head -40
echo
echo “===== BEST FACTS / RUNLIST HITS =====”
grep -Ei ‘facts_neubing\.db|data_real_size|run_count|runlist|VCN|LCN|ntfs_lcn|clusters|6755031|160551’ \
“$NARROW/runlist-focused-grep.tsv” |
head -300
echo
echo “===== INVENTORY TAIL =====”
tail -80 “$NARROW/text-artifact-inventory.tsv”
} | tee “$NARROW/runlist-focused-report.txt”
cat “$NARROW/runlist-focused-report.txt”
“`
Then mirror:
“`bash
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
This should give us a compact target: either the exact runlist file, or the parser output that produced `run0: LCN 6755031, length 160551`. Once we have the full runlist, we reconstruct the remaining runs and concatenate the full database candidate.
## Prompt:
03/06/2026, 13:08:33
Is this more to your liking? (buffer overflowed)♥
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 13:08:43
> **Evaluating file content for the user**
>
> The user seems to be asking whether a pasted file addresses their needs. After reviewing, I can confirm that the file includes the required documents like “mft-target-full-runs.tsv” and other relevant files. I’ll need to include citations as instructed. Should I check the file search for specific references next?
>
> **Clarifying file search and citation process**
>
> The file seems to be missing line references, possibly due to being outdated. Instead of using line refs, I might try a search method to pinpoint important sections in the file. I’ll need to follow the proper schema for this and check with the uploaded content to find what’s relevant.
>
> **Deciding on next steps for file and citations**
>
> The uploaded file seems to have a narrower report. We also have earlier complete runlist files. I should probably focus on both current and previous documents to extract relevant line citations. Clicking on the important files might be the best way forward to get the right context.
>
> **Deciding on citation format for results**
>
> I noticed the mclick didn’t provide line numbers for citations, but it did include markers, so I could potentially use those instead. The developer insists on line ranges, but the system seems to allow citing with markers. I’ll go with using those since no line numbers are available.
>
> **Highlighting discoveries and next steps**
>
> We’ve identified key files, including “mft-target-full-runs.tsv” for the narrow report and relevant runlist data outlining cluster sizes and counts.
>
> Next, I’ll reconstruct the remaining 26 runs from the full runlist, needing careful formulation of the proper shell script to calculate the database from the run data and current parameters.
>
> Thought for 59s
Yes. **Much more to my liking.** This is now sharply focused rather than a hard-disk manifest flood.
The key win: the inventory points directly at the artifacts we need, especially:
“`text
mft-target-full-runs.tsv
mft-target-full-summary.tsv
dump_full_mft_runlists.py
tail-continuity-first-report.txt
facts_neubing.db.run0-456-plus-tail-continuity-first.bin
“`
The runlist confirms `facts_neubing.db` has `data_real_size=679821312`, `run_count=27`, and `est_cluster_size=4096`; run 0 alone is `657616896` bytes. `Pasted text.txt` And our reconstructed run0 candidate already matches that exact run0 size, with SHA256 `f4f52c267b5befe8c36d22218735a06627497cab26d61d178fe5d3db49c5cb47`. `Pasted text.txt`
So the next problem is beautifully bounded:
“`text
Full DB size: 679,821,312 bytes
Recovered run0: 657,616,896 bytes
Remaining tail: 22,204,416 bytes
Remaining runs: run_index 1..26
“`
The next step is **not** to guess; it is to derive the exact thin keys for runs `1..26`, scan `_tmeta.raw` for those keys, and inspect coverage before reconstructing.
Run this next.
“`bash
# Prepare remaining-runs reconstruction lab for facts_neubing.db
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
REC=”$OUT/recovery-probes/db-reconstruction”
TMETA_RAW=”$META/local-lvm-nvme0n1_tmeta.raw”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RUNLIST=”$OUT/mft-target-full-runs.tsv”
NEXT=”$REC/full-db-reconstruction”
mkdir -p “$NEXT”
OLD_VOLUME_BASE=16777216
CLUSTER=4096
THIN=65536
echo “OUT=$OUT”
echo “RUNLIST=$RUNLIST”
echo “TMETA_RAW=$TMETA_RAW”
echo “TDATA=$TDATA”
echo “NEXT=$NEXT”
ls -lh “$RUNLIST” “$TMETA_RAW”
“`
Now generate the exact key manifest for the remaining 26 NTFS runs:
“`bash
cat > “$NEXT/build_remaining_run_key_manifest.py” <<'PY'
#!/usr/bin/env python3
import csv
import sys
from pathlib import Path
runlist = Path(sys.argv[1])
outdir = Path(sys.argv[2])
OLD_VOLUME_BASE = int(sys.argv[3])
CLUSTER = int(sys.argv[4])
THIN = int(sys.argv[5])
outdir.mkdir(parents=True, exist_ok=True)
segments_path = outdir / "facts_neubing.remaining-runs.segments.tsv"
blocks_path = outdir / "facts_neubing.remaining-runs.thin-blocks.tsv"
keys_path = outdir / "facts_neubing.remaining-runs.target-keys.txt"
summary_path = outdir / "facts_neubing.remaining-runs.manifest-summary.txt"
rows = []
with runlist.open("r", encoding="utf-8", errors="replace", newline="") as f:
r = csv.DictReader(f, delimiter="\t")
for row in r:
if row.get("name") != "facts_neubing.db":
continue
idx = int(row["run_index"])
if idx == 0:
continue
rows.append(row)
rows.sort(key=lambda x: int(x["run_index"]))
all_keys = set()
total_bytes = 0
block_rows = []
with segments_path.open("w", encoding="utf-8") as seg:
seg.write(
"run_index\tfile_vcn\tntfs_lcn\tclusters\tfile_offset_bytes\trun_bytes\t"
"vbyte\tstart_key\tstart_voff\tend_key\tend_count\n"
)
for row in rows:
idx = int(row["run_index"])
file_vcn = int(row["file_vcn"])
ntfs_lcn = int(row["ntfs_lcn"])
clusters = int(row["clusters"])
file_offset = int(row["file_offset_bytes"])
run_bytes = clusters * CLUSTER
vbyte = OLD_VOLUME_BASE + ntfs_lcn * CLUSTER
start_key = vbyte // THIN
start_voff = vbyte % THIN
remaining = run_bytes
key = start_key
voff = start_voff
off = file_offset
seq = 0
last_key = start_key
last_count = 0
while remaining > 0:
count = min(THIN – voff, remaining)
block_rows.append((idx, key, voff, count, off, seq))
all_keys.add(key)
remaining -= count
off += count
last_key = key
last_count = count
key += 1
voff = 0
seq += 1
total_bytes += run_bytes
seg.write(
f”{idx}\t{file_vcn}\t{ntfs_lcn}\t{clusters}\t{file_offset}\t{run_bytes}\t”
f”{vbyte}\t{start_key}\t{start_voff}\t{last_key}\t{last_count}\n”
)
with blocks_path.open(“w”, encoding=”utf-8″) as b:
b.write(“run_index\tkey\tvoff\tcount\tfile_offset_bytes\tseq_in_run\n”)
for rec in block_rows:
b.write(“\t”.join(map(str, rec)) + “\n”)
with keys_path.open(“w”, encoding=”utf-8″) as k:
for key in sorted(all_keys):
k.write(f”{key}\n”)
with summary_path.open(“w”, encoding=”utf-8″) as s:
s.write(f”remaining_run_count={len(rows)}\n”)
s.write(f”remaining_total_bytes={total_bytes}\n”)
s.write(f”target_key_count={len(all_keys)}\n”)
s.write(f”first_key={min(all_keys)}\n”)
s.write(f”last_key={max(all_keys)}\n”)
s.write(f”segments={segments_path}\n”)
s.write(f”blocks={blocks_path}\n”)
s.write(f”keys={keys_path}\n”)
print(summary_path)
print(segments_path)
print(blocks_path)
print(keys_path)
PY
chmod +x “$NEXT/build_remaining_run_key_manifest.py”
python3 “$NEXT/build_remaining_run_key_manifest.py” \
“$RUNLIST” “$NEXT” “$OLD_VOLUME_BASE” “$CLUSTER” “$THIN” \
| tee “$NEXT/manifest-build-output.txt”
cat “$NEXT/facts_neubing.remaining-runs.manifest-summary.txt”
cat “$NEXT/facts_neubing.remaining-runs.segments.tsv”
“`
Now scan `_tmeta.raw` for only those target keys:
“`bash
cat > “$NEXT/scan_tmeta_for_key_file.py” <<'PY'
#!/usr/bin/env python3
import struct
import sys
from pathlib import Path
tmeta = Path(sys.argv[1])
keys_file = Path(sys.argv[2])
targets = {int(x.strip()) for x in keys_file.read_text().splitlines() if x.strip()}
def u32(b, o):
return struct.unpack_from("
continue
if max_entries <= 0 or max_entries > 512:
continue
if value_size != 8:
continue
keys_off = 0x20
vals_off = keys_off + max_entries * 8
if vals_off + nr_entries * 8 > block_size:
continue
for i in range(nr_entries):
key = u64(data, keys_off + i * 8)
if key not in targets:
continue
val = u64(data, vals_off + i * 8)
print(f”{bno}\t{i}\t{key}\t{val >> 24}\t{val & 0xffffff}\t0x{val:016x}”)
if bno and bno % 250000 == 0:
print(f”scanned_blocks={bno}/{total}”, file=sys.stderr, flush=True)
PY
chmod +x “$NEXT/scan_tmeta_for_key_file.py”
python3 “$NEXT/scan_tmeta_for_key_file.py” \
“$TMETA_RAW” \
“$NEXT/facts_neubing.remaining-runs.target-keys.txt” \
> “$NEXT/facts_neubing.remaining-runs.key-hits.tsv” \
2> “$NEXT/facts_neubing.remaining-runs.key-scan-progress.txt”
“`
Then summarize coverage:
“`bash
cat > “$NEXT/summarize_remaining_key_hits.py” <<'PY'
#!/usr/bin/env python3
import csv
import sys
from pathlib import Path
from collections import defaultdict, Counter
blocks = Path(sys.argv[1])
hits = Path(sys.argv[2])
needed = []
with blocks.open("r", encoding="utf-8", errors="replace") as f:
r = csv.DictReader(f, delimiter="\t")
for row in r:
needed.append({
"run_index": int(row["run_index"]),
"key": int(row["key"]),
"voff": int(row["voff"]),
"count": int(row["count"]),
"file_offset": int(row["file_offset_bytes"]),
"seq": int(row["seq_in_run"]),
})
by_key = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
header = next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
key = int(p[2])
phys = int(p[3])
except Exception:
continue
if phys > 0:
by_key[key].append((phys, mb, idx))
missing = []
run_stats = defaultdict(lambda: {“needed”: 0, “covered”: 0, “bytes”: 0})
for b in needed:
st = run_stats[b[“run_index”]]
st[“needed”] += 1
st[“bytes”] += b[“count”]
if b[“key”] in by_key:
st[“covered”] += 1
else:
missing.append(b)
print(“===== OVERALL =====”)
print(f”needed_thin_blocks={len(needed)}”)
print(f”unique_needed_keys={len(set(b[‘key’] for b in needed))}”)
print(f”hit_keys={len(by_key)}”)
print(f”missing_block_refs={len(missing)}”)
if missing:
print(“missing_first_80=” + ” “.join(f”run{m[‘run_index’]}:key{m[‘key’]}” for m in missing[:80]))
print()
print(“===== BY RUN =====”)
print(“run_index\tneeded_blocks\tcovered_blocks\trun_bytes”)
for ri in sorted(run_stats):
st = run_stats[ri]
print(f”{ri}\t{st[‘needed’]}\t{st[‘covered’]}\t{st[‘bytes’]}”)
print()
print(“===== FIRST/LAST CANDIDATES PER RUN =====”)
for ri in sorted(run_stats):
blocks_for_run = [b for b in needed if b[“run_index”] == ri]
for b in (blocks_for_run[:2] + blocks_for_run[-2:]):
vals = by_key.get(b[“key”], [])
c = Counter(v[0] for v in vals)
tops = ” “.join(f”{phys}:{cnt}” for phys, cnt in c.most_common(6))
print(f”run={ri} key={b[‘key’]} voff={b[‘voff’]} count={b[‘count’]} candidates={len(vals)} top={tops}”)
PY
chmod +x “$NEXT/summarize_remaining_key_hits.py”
python3 “$NEXT/summarize_remaining_key_hits.py” \
“$NEXT/facts_neubing.remaining-runs.thin-blocks.tsv” \
“$NEXT/facts_neubing.remaining-runs.key-hits.tsv” \
| tee “$NEXT/facts_neubing.remaining-runs.coverage-summary.txt”
cat “$NEXT/facts_neubing.remaining-runs.coverage-summary.txt”
tail -40 “$NEXT/facts_neubing.remaining-runs.key-scan-progress.txt”
“`
Mirror:
“`bash
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
Paste the coverage summary. If `missing_block_refs=0`, we can build the full `679,821,312` byte candidate next.
## Prompt:
03/06/2026, 13:40:19
Seems well-in-order to me.💫
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 13:40:24
> **Evaluating candidate selection for run continuity**
>
> I’m thinking about candidate selection per run — using a “vote-first” method and ensuring continuity. Since remaining runs are just small fragments, it might not be critical, but I still need to select the best candidate. I’ll check file offsets, ensure no gaps, and validate continuity in the runlist. I’ll also add a sanity check script.
>
> Thought for 26s
Yes – this is exactly what we wanted.
The decisive line is:
“`text
needed_thin_blocks=362
unique_needed_keys=361
hit_keys=361
missing_block_refs=0
“`
So every thin-block reference needed for runs `1..26` has at least one recovered mapping candidate. The remaining DB tail is therefore reconstructable as a candidate artifact, not merely searchable residue. The per-run coverage is also complete for all remaining runs. `Pasted text.txt`
The next step is to build one full database candidate using a **vote-first, continuity-aware selector**. This writes only to the NAS forensic directory.
“`bash
# Build full facts_neubing.db candidate from run0 + remaining runs
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
REC=”$OUT/recovery-probes/db-reconstruction”
NEXT=”$REC/full-db-reconstruction”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RUN0=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-tail-recovery/facts_neubing.db.run0-456-plus-tail-continuity-first.bin”
BLOCKS=”$NEXT/facts_neubing.remaining-runs.thin-blocks.tsv”
HITS=”$NEXT/facts_neubing.remaining-runs.key-hits.tsv”
FULL=”$NEXT/facts_neubing.db.full-candidate-vote-continuity.bin”
MAP=”$NEXT/facts_neubing.db.full-candidate-vote-continuity.map.tsv”
REPORT=”$NEXT/facts_neubing.db.full-candidate-vote-continuity.report.txt”
ls -lh “$RUN0” “$BLOCKS” “$HITS”
“`
Now run the builder:
“`bash
cat > “$NEXT/build_full_db_vote_continuity.py” <<'PY'
#!/usr/bin/env python3
import csv
import os
import sys
import hashlib
from pathlib import Path
from collections import defaultdict, Counter
run0 = Path(sys.argv[1])
blocks_file = Path(sys.argv[2])
hits_file = Path(sys.argv[3])
tdata = sys.argv[4]
full_out = Path(sys.argv[5])
map_out = Path(sys.argv[6])
THIN = 65536
EXPECTED_FULL_SIZE = 679821312
# Load remaining block references.
blocks = []
with blocks_file.open("r", encoding="utf-8", errors="replace") as f:
r = csv.DictReader(f, delimiter="\t")
for row in r:
blocks.append({
"run_index": int(row["run_index"]),
"key": int(row["key"]),
"voff": int(row["voff"]),
"count": int(row["count"]),
"file_offset": int(row["file_offset_bytes"]),
"seq": int(row["seq_in_run"]),
})
blocks.sort(key=lambda x: (x["file_offset"], x["run_index"], x["seq"]))
# Load candidate mappings: key -> phys -> representative metadata rows.
cand = defaultdict(list)
with hits_file.open(“r”, encoding=”utf-8″, errors=”replace”) as f:
next(f, None)
for line in f:
p = line.rstrip(“\n”).split(“\t”)
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
key = int(p[2])
phys = int(p[3])
except Exception:
continue
if phys > 0:
cand[key].append((phys, mb, idx))
# Build selected map run-by-run.
selected = []
breaks = []
last_by_run = {}
for b in blocks:
key = b[“key”]
rows = cand.get(key, [])
if not rows:
raise SystemExit(f”missing candidates for key {key}, run {b[‘run_index’]}”)
counts = Counter(phys for phys, mb, idx in rows)
prev_phys = last_by_run.get(b[“run_index”])
chosen_phys = None
reason = None
# Continuity inside a small NTFS run is very strong when available.
if prev_phys is not None:
want = prev_phys + 1
if want in counts:
chosen_phys = want
reason = “continuity”
else:
# vote first, then closest to expected continuation
chosen_phys = sorted(counts, key=lambda p: (-counts[p], abs(p – want), p))[0]
reason = “vote_fallback_break”
breaks.append((b[“run_index”], key, want, chosen_phys, counts[chosen_phys]))
else:
# first block of a run: choose strongest vote
chosen_phys = sorted(counts, key=lambda p: (-counts[p], p))[0]
reason = “first_vote”
rep = sorted((mb, idx) for phys, mb, idx in rows if phys == chosen_phys)[0]
mb, idx = rep
votes = counts[chosen_phys]
candidate_count = len(rows)
selected.append({
**b,
“phys”: chosen_phys,
“metadata_block”: mb,
“entry_index”: idx,
“reason”: reason,
“votes”: votes,
“candidate_count”: candidate_count,
})
last_by_run[b[“run_index”]] = chosen_phys
# Build full candidate: run0 plus remaining runs in file-offset order.
with full_out.open(“wb”) as out:
with run0.open(“rb”) as f:
while True:
chunk = f.read(16 * 1024 * 1024)
if not chunk:
break
out.write(chunk)
current_size = out.tell()
fd = os.open(tdata, os.O_RDONLY)
try:
for s in selected:
# Remaining runs should continue exactly after run0.
if current_size != s[“file_offset”]:
raise SystemExit(
f”file offset mismatch before run {s[‘run_index’]} key {s[‘key’]}: ”
f”current_size={current_size} expected={s[‘file_offset’]}”
)
skip = s[“phys”] * THIN + s[“voff”]
data = os.pread(fd, s[“count”], skip)
if len(data) != s[“count”]:
raise SystemExit(
f”short read run={s[‘run_index’]} key={s[‘key’]} phys={s[‘phys’]} ”
f”wanted={s[‘count’]} got={len(data)}”
)
out.write(data)
current_size += s[“count”]
finally:
os.close(fd)
if full_out.stat().st_size != EXPECTED_FULL_SIZE:
raise SystemExit(f”wrong full size: {full_out.stat().st_size} expected {EXPECTED_FULL_SIZE}”)
with map_out.open(“w”, encoding=”utf-8″) as m:
m.write(
“run_index\tseq_in_run\tfile_offset_bytes\tkey\tvoff\tcount\tphys\t”
“metadata_block\tentry_index\treason\tvotes\tcandidate_count\n”
)
for s in selected:
m.write(
f”{s[‘run_index’]}\t{s[‘seq’]}\t{s[‘file_offset’]}\t{s[‘key’]}\t”
f”{s[‘voff’]}\t{s[‘count’]}\t{s[‘phys’]}\t{s[‘metadata_block’]}\t”
f”{s[‘entry_index’]}\t{s[‘reason’]}\t{s[‘votes’]}\t{s[‘candidate_count’]}\n”
)
breaks_path = full_out.with_suffix(“.breaks.tsv”)
with breaks_path.open(“w”, encoding=”utf-8″) as b:
b.write(“run_index\tkey\texpected_phys\tselected_phys\tselected_votes\n”)
for row in breaks:
b.write(“\t”.join(map(str, row)) + “\n”)
h = hashlib.sha256()
with full_out.open(“rb”) as f:
while True:
chunk = f.read(16 * 1024 * 1024)
if not chunk:
break
h.update(chunk)
print(f”full={full_out}”)
print(f”map={map_out}”)
print(f”breaks={breaks_path}”)
print(f”bytes={full_out.stat().st_size}”)
print(f”sha256={h.hexdigest()}”)
print(f”selected_blocks={len(selected)}”)
print(f”break_count={len(breaks)}”)
PY
chmod +x “$NEXT/build_full_db_vote_continuity.py”
python3 “$NEXT/build_full_db_vote_continuity.py” \
“$RUN0” “$BLOCKS” “$HITS” “$TDATA” “$FULL” “$MAP” \
| tee “$NEXT/full-candidate-build-output.txt”
“`
Then produce a compact report:
“`bash
BREAKS=”$NEXT/facts_neubing.db.full-candidate-vote-continuity.breaks.tsv”
{
echo “===== BUILD =====”
cat “$NEXT/full-candidate-build-output.txt”
echo
echo “===== FULL SIZE/SHA =====”
ls -lh “$FULL”
stat -c ‘bytes=%s’ “$FULL”
sha256sum “$FULL”
file “$FULL”
echo
echo “===== MAP FIRST/LAST =====”
wc -l “$MAP”
head -20 “$MAP”
tail -20 “$MAP”
echo
echo “===== BREAKS =====”
wc -l “$BREAKS”
head -80 “$BREAKS”
tail -80 “$BREAKS”
echo
echo “===== TERM COUNTS =====”
for t in SQL Anywhere Sybase facts_neubing facts_neubing.log facts_neubing.db database DBA CHECKSUM 1252LATIN1 UCA PAGE pneubing; do
printf “%-18s ” “$t”
LC_ALL=C grep -aoi “$t” “$FULL” | wc -l
done
echo
echo “===== FINAL 2048 BYTES =====”
SIZE=$(stat -c ‘%s’ “$FULL”)
od -Ax -tx1 -j $((SIZE – 2048)) -N 2048 “$FULL”
} | tee “$REPORT”
cat “$REPORT”
“`
Then mirror it:
“`bash
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
What I want to see next:
“`text
bytes=679821312
selected_blocks=362
break_count=…
“`
If the full candidate builds cleanly, the next rung is validation: generate page-level structure scores and, ideally, test the candidate with SQL Anywhere 12 tooling from the Windows side.
## Prompt:
03/06/2026, 13:55:08
Here some data which seems in great form.
[Attachment: Pasted text.txt]
## Response:
03/06/2026, 13:55:11
> **Validating data with SQL Anywhere tooling**
>
> To respond to the user’s upload, I’ll mention that the candidate’s exact size, SHA, and selected blocks have been thoroughly checked. There’s a minor issue with 35 breaks requiring validation. I’ll provide SQL Anywhere commands for validation copies and run dbvalid/dbsrv12 in a read-only mode, likely on Windows.
>
> **Handling SQL Anywhere validation and candidate troubleshooting**
>
> Given the high-stakes nature of data recovery, I’ll avoid unnecessary details. I’ll suggest performing server-side structural validation using page scoring, followed by Windows read-only testing. I’ll recommend duplicating the candidate with `.sha256` and reports. However, checksum verification may require identifying page header patterns.
>
> Thought for 17s
Yes – this is in very good form. We have crossed from “partial reconstruction” into a **full database candidate**.
The important confirmations:
“`text
facts_neubing.db.full-candidate-vote-continuity.bin
bytes = 679,821,312
sha256 = f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e
blocks = 362 selected remaining-run blocks
breaks = 35 documented selector discontinuities
“`
The size exactly matches the recovered MFT real size, and every remaining-run thin-block reference was covered. The term counts are also strongly database-like: many `CHECKSUM`, `PAGE`, `Sybase`, `SQL`, `DBA`, and `pneubing` hits. The `file` misclassification as “Matlab v4” is almost certainly just a magic-byte false positive, as before. `Pasted text.txt`
The only caution is the **35 breaks**. They are not fatal; most are expected because these later NTFS runs are fragmented and selected from many stale metadata generations. But they are exactly what we now need to validate.
Next I would preserve this candidate, then make a validation copy with the expected production name:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
NEXT=”$OUT/recovery-probes/db-reconstruction/full-db-reconstruction”
FULL=”$NEXT/facts_neubing.db.full-candidate-vote-continuity.bin”
VALID=”$NEXT/validation-copy”
mkdir -p “$VALID”
cp -a “$FULL” “$VALID/facts_neubing.db”
sha256sum “$VALID/facts_neubing.db” | tee “$VALID/facts_neubing.db.sha256”
ls -lh “$VALID/facts_neubing.db”
stat -c ‘bytes=%s’ “$VALID/facts_neubing.db”
“`
Then mirror it:
“`bash
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
“`
After that, the best validation path is from the Windows/SQL Anywhere side, using a **copy only**, never the original VM or original recovered artifacts. If SQL Anywhere 12 tools are present, the first thing to try is a read-only validation/open attempt against:
“`text
/mnt/pve/MYCLOUD-310867/…/full-db-reconstruction/validation-copy/facts_neubing.db
“`
or copied locally to Windows as:
“`text
C:\B2-Recovery-Test\facts_neubing.db
“`
Before we attempt alternate candidates, I would test this exact file. If SQL Anywhere opens it or gives a meaningful repair/validation error, we’ll know whether the 35 breaks matter.
## Prompt:
04/06/2026, 11:25:05
I propose, iff you concur, that I first copy the present VM’s disk-0 to one of the NAS without destruction of the current active drive (HOLDING PATTERN). This will not affect our substrate and essentially preserves the state of the LVM Thin we are retrieving our data from. I know this has a cost in performance, but the win is that we do not change our substrate. We can then test with abandon and ensure that every sector being scavenged is left intact.
## Response:
04/06/2026, 11:25:08
> **Considering user’s request and safe plan**
>
> I think the user wants a safe plan to transfer data. They’re asking about disk-0, which might be ambiguous since the current VM’s disk configuration could have changed. I should provide a plan to image the current disk to NAS but avoid writing to the substrate. I’ll double-check file citation and the details for clarity.
>
> Thought for 42s
I concur – **with one important naming safeguard**.
This is the right holding pattern: preserve the current VM disk to NAS, do not mutate the LVM-thin substrate, and test from copies only. We now have a full `facts_neubing.db` candidate with exact expected size `679,821,312` and SHA256 `f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e`, but before aggressive validation, freezing the current VM state is wise. `Pasted text.txt`
The safeguard: **do not assume `vm-100-disk-0` is the Windows disk.** In our recovered evidence, Proxmox `vm-100-disk-0` was often the tiny EFI disk, while the Windows/system disk was exposed as `sata0` and mapped to a different LV. So first identify the real disk.
Run this first:
“`bash
qm status 100
qm config 100
echo
pvesm list local-lvm-nvme0n1 | grep ‘vm-100’
echo
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv local-lvm-nvme0n1 | grep ‘vm-100’
“`
If the VM is running, shut it down before copying. A live block copy is read-only against the substrate, but the image may be internally inconsistent if Windows is writing.
“`bash
qm shutdown 100 –timeout 300
qm status 100
“`
Then set up a NAS holding directory and capture metadata:
“`bash
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-$(date +%F-%H%M)”
mkdir -p “$HOLD”
qm config 100 | tee “$HOLD/qm-100.conf.txt”
pvesm list local-lvm-nvme0n1 | tee “$HOLD/pvesm-local-lvm-nvme0n1.txt”
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1 \
| tee “$HOLD/lvs-local-lvm-nvme0n1.txt”
echo “$HOLD”
df -h “$HOLD”
“`
Now choose the source **from `qm config 100`**. For example, if the config says:
“`text
sata0: local-lvm-nvme0n1:vm-100-disk-1
“`
then use:
“`bash
SRC=”/dev/local-lvm-nvme0n1/vm-100-disk-1″
“`
Verify before copying:
“`bash
ls -lh “$SRC”
blockdev –getsize64 “$SRC”
qemu-img info -f raw “$SRC”
“`
Then make a compressed QCOW2 holding image on NAS:
“`bash
ionice -c2 -n7 nice -n 19 \
qemu-img convert -p -f raw -O qcow2 -c \
“$SRC” \
“$HOLD/vm-100-sata0-holding.qcow2”
“`
After it completes:
“`bash
qemu-img info “$HOLD/vm-100-sata0-holding.qcow2” | tee “$HOLD/qcow2-info.txt”
qemu-img check “$HOLD/vm-100-sata0-holding.qcow2” | tee “$HOLD/qcow2-check.txt”
sha256sum “$HOLD/vm-100-sata0-holding.qcow2” \
| tee “$HOLD/vm-100-sata0-holding.qcow2.sha256″
“`
This should only read the LVM-thin source and write to NAS. Avoid `dd` for this unless we intentionally want a full raw 2 TB image; `qemu-img convert` to QCOW2 is better for holding-pattern preservation and later testing.
Once this is done, we can test from copies with far less emotional and operational pressure.
## Prompt:
04/06/2026, 11:32:51
I shut down the VM at the very beginning so that nothing can change. Fetching that data for you now:
###
qm config 100
echo
pvesm list local-lvm-nvme0n1 | grep ‘vm-100’
echo
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv local-lvm-nvme0n1 | grep ‘vm-100’
status: stopped
acpi: 1
agent: 1,fstrim_cloned_disks=1
bios: ovmf
boot: order=sata0;ide2
cores: 7
cpu: x86-64-v2-AES
description: sata1%3A local-lvm-nvme0n1%3Avm-100-disk-3,backup=0,discard=on,size=2T,ssd=1%0Asata2%3A /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
efidisk0: local-lvm-nvme0n1:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
ide2: none,media=cdrom
machine: pc-q35-8.0
memory: 24576
meta: creation-qemu=8.0.2,ctime=1698450493
name: IN-Windows-Server-2022
net0: e1000=D2:1E:7F:7B:F0:CE,bridge=vmbr0,firewall=1
numa: 0
onboot: 1
ostype: win11
sata0: local-lvm-nvme0n1:vm-100-disk-1,discard=on,size=2T,ssd=1
sata2: /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
smbios1: uuid=120f8cb5-b93c-42fb-9656-9e2bb188b97c
sockets: 1
tpmstate0: local-lvm-nvme0n1:vm-100-disk-2,size=4M,version=v2.0
vmgenid: a30aa4fa-6a82-45a5-a1cd-c69b01f5f9ac
local-lvm-nvme0n1:vm-100-disk-0 raw images 4194304 100
local-lvm-nvme0n1:vm-100-disk-1 raw images 2199023255552 100
local-lvm-nvme0n1:vm-100-disk-2 raw images 4194304 100
vm-100-disk-0 /dev/local-lvm-nvme0n1/vm-100-disk-0 4.00m Vwi-a-tz– thin local-lvm-nvme0n1
vm-100-disk-1 /dev/local-lvm-nvme0n1/vm-100-disk-1 2.00t Vwi-a-tz– thin local-lvm-nvme0n1
vm-100-disk-2 /dev/local-lvm-nvme0n1/vm-100-disk-2 4.00m Vwi-a-tz– thin local-lvm-nvme0n1
root@pve:~#
###
I hold and poise at this step and await your guidance.
## Response:
04/06/2026, 11:32:54
> **Guiding the user on VM disk copy**
>
> I don’t think I need to cite the uploaded file here since the info is in the message. The user wants to copy a VM disk (disk-0), but the details show disk-1 instead. I’ll guide them to copy the correct disk using `qemu-img convert` to avoid writes to the substrate. Also, Proxmox backup could work, but it reads too.
>
> Thought for 38s
Yes. The output confirms the correct target:
“`text
sata0: local-lvm-nvme0n1:vm-100-disk-1,discard=on,size=2T,ssd=1
“`
So the present active Windows disk is **not** `vm-100-disk-0`; it is:
“`bash
/dev/local-lvm-nvme0n1/vm-100-disk-1
“`
`vm-100-disk-0` is only the 4M EFI disk, and `vm-100-disk-2` is the 4M TPM state. I recommend we preserve all three, but the large holding image is `vm-100-disk-1`.
Because browser terminals have timed out before, I would run this as a detached `nohup` script.
“`bash
# Create a VM100 holding copy job on NAS, without modifying LVM-thin source
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-$(date +%F-%H%M)”
mkdir -p “$HOLD”
SRC_MAIN=”/dev/local-lvm-nvme0n1/vm-100-disk-1″
SRC_EFI=”/dev/local-lvm-nvme0n1/vm-100-disk-0″
SRC_TPM=”/dev/local-lvm-nvme0n1/vm-100-disk-2″
{
date
hostname
echo “HOLD=$HOLD”
echo “SRC_MAIN=$SRC_MAIN”
echo “SRC_EFI=$SRC_EFI”
echo “SRC_TPM=$SRC_TPM”
echo
qm status 100
echo
qm config 100
echo
pvesm list local-lvm-nvme0n1 | grep ‘vm-100’ || true
echo
lvs -a -o lv_name,lv_path,lv_size,lv_attr,segtype,pool_lv,devices local-lvm-nvme0n1 | grep ‘vm-100’ || true
echo
df -h “$HOLD”
echo
blockdev –getsize64 “$SRC_MAIN” “$SRC_EFI” “$SRC_TPM”
echo
qemu-img info -f raw “$SRC_MAIN”
} | tee “$HOLD/preflight.txt”
“`
Now create the detached copy script:
“`bash
cat > “$HOLD/copy-vm100-holding.sh” <
EOF
chmod +x “$HOLD/copy-vm100-holding.sh”
“`
Start it detached:
“`bash
nohup bash “$HOLD/copy-vm100-holding.sh” >/dev/null 2>&1 &
echo $! | tee “$HOLD/copy.pid”
echo “HOLD=$HOLD”
echo “PID=$(cat “$HOLD/copy.pid”)”
“`
Monitor it:
“`bash
tail -f “$HOLD/copy.log”
“`
In another shell, this is useful:
“`bash
PID=$(cat “$HOLD/copy.pid”)
ps -p “$PID” -o pid,etime,pcpu,pmem,cmd
du -h “$HOLD”
df -h “$HOLD”
“`
When it finishes, paste:
“`bash
tail -120 “$HOLD/copy.log”
cat “$HOLD/SHA256SUMS.txt”
qemu-img info “$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
“`
This preserves the present VM state without writing to the LVM-thin source. Then we can validate or mount only copies.
## Prompt:
04/06/2026, 11:38:45
A wise plan, because the GUI already did time out, but the console has not yet done so. It will happen though soon enough. If you find it advisable I could ssh to the Proxmox server at the customer’s location by simply allowing port, say 2222 through to it on their router. Also, here is their current df -h for your perusal.
###
root@pve:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.1M 3.2G 1% /run
/dev/mapper/pve-root 94G 90G 0 100% /
tmpfs 16G 46M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
efivarfs 256K 27K 225K 11% /sys/firmware/efi/efivars
/dev/sda2 1022M 12M 1011M 2% /boot/efi
/dev/fuse 128M 20K 128M 1% /etc/pve
//192.168.127.128/Public 7.3T 1.9T 5.4T 26% /mnt/pve/MYCLOUD-310867
//192.168.127.159/Public 3.6T 2.7T 939G 75% /mnt/pve/MYCLOUD-159
tmpfs 3.2G 0 3.2G 0% /run/user/0
root@pve:~#
###
## Response:
04/06/2026, 11:38:48
> **Providing advice on SSH port forwarding and system safety**
>
> It seems the user is asking for advice on SSH port forwarding and disk usage. I’ll mention that using SSH for port forwarding is fine but can add security risks. It’s better to use a VPN if possible, or at least non-standard ports, keys only, and disable root passwords. Since the root filesystem is full, any small writes can fail, so it’s wise to redirect outputs and logs to an external NAS.
>
> **Providing SSH and disk usage advice for safe port forwarding**
>
> To safely enable port forwarding on port 2222, restrict the source IP if possible, use SSH keys, and disable passwords. For monitoring, start with console copy and then switch to SSH, using `nohup` to ensure the process continues running. For disk space concerns, avoid writing to root and set TMPDIR on the NAS for `qemu-img`. Depending on performance needs, choose between compressed or uncompressed qcow2 formats.
>
> Thought for 17s
Yes — SSH access is advisable **if** we do it as a temporary, tightly bounded maintenance aperture. It will make this work much safer operationally than relying on the Proxmox GUI console.
Your `df -h` also confirms the important constraint:
“`text
/dev/mapper/pve-root 94G 90G 0 100% /
MYCLOUD-310867 7.3T 1.9T 5.4T 26%
MYCLOUD-159 3.6T 2.7T 939G 75%
“`
So: **write nothing substantial to `/`**. All scripts, logs, images, hashes, validation copies, and reports should stay on `/mnt/pve/MYCLOUD-310867/…`. The NAS has enough room; the Proxmox root filesystem does not.
For SSH, I would prefer this order:
1. If the router supports source-IP restriction, forward **WAN:2222 → Proxmox:22** only from your current public IP.
2. If source restriction is not possible, still use port `2222`, but keep it open only during the session and close it immediately afterward.
3. Do **not** expose Proxmox web port `8006`.
4. Do **not** install anything right now because `/` is full.
5. Use SSH only to start/monitor detached jobs whose output goes to NAS.
Before opening SSH externally, from the Proxmox console run this small read-only check:
“`bash
ss -tlnp | grep ‘:22 ‘ || true
systemctl status ssh –no-pager
ip -4 addr
“`
If SSH is listening, router forward is enough. From your side:
“`bash
ssh -p 2222 root@CUSTOMER_PUBLIC_IP
“`
Once in, immediately start or confirm the holding-copy job with the `nohup` script approach. Because `/` is full, use this safer variant so even shell history/temp is not important and all artifacts land on NAS:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
df -h / /mnt/pve/MYCLOUD-310867 /mnt/pve/MYCLOUD-159
“`
Then proceed with the `HOLD=…` script we prepared. The key source remains:
“`bash
SRC_MAIN=”/dev/local-lvm-nvme0n1/vm-100-disk-1”
“`
I would not try to “fix” the full root filesystem yet. We only need enough shell functionality to finish preservation and validation. Once the holding image exists, we can breathe much more freely.
## Prompt:
04/06/2026, 11:44:30
I understand. I can also set the new Proxmox server to accept only port 22 or 2222 from my location as an added safeguard. Regarding space: it is an easy step to delete some of the very old backups on both NAS so that we have added “breathing room” on them. I would ensure that they are dated earlier than six months ago.
## Response:
04/06/2026, 11:44:39
> **Planning safe backup pruning**
>
> I think the user wants help with deleting old backups but with caution. Instead of blindly deleting, it’s safer to first inventory the old backups. If possible, move them to “delete-candidates” and only prune after confirming it’s safe, avoiding active or forensic data. The NAS should have enough space for the necessary backup work, but I should confirm everything before any deletion.
>
> Thought for 14s
Yes, that is exactly the right security posture.
For SSH, the best temporary aperture is:
“`text
WAN:2222 from Carey’s public IP only -> Proxmox LAN IP:22
“`
Then close it again when the holding copy and validation steps are complete. That is much better than relying on the browser console alone.
On the NAS space: yes, pruning old backups is reasonable, but I would do it in a **manifest-first** way. Since `MYCLOUD-310867` already has **5.4T free**, we probably do not need emergency deletion before the holding copy. Still, building an old-backup manifest now is wise.
Run this first — inventory only, no deletion:
“`bash
# Build NAS old-backup inventory, no deletion
PRUNE=”/mnt/pve/MYCLOUD-310867/prune-inventory-$(date +%F-%H%M)”
mkdir -p “$PRUNE”
{
date
hostname
df -h /mnt/pve/MYCLOUD-310867 /mnt/pve/MYCLOUD-159
echo
echo “===== Candidate backup directories older than 180 days =====”
find /mnt/pve/MYCLOUD-310867 /mnt/pve/MYCLOUD-159 \
-mindepth 1 -maxdepth 5 \
-type d \
-mtime +180 \
\( \
-iname ‘Backup 20*’ -o \
-iname ‘WindowsImageBackup’ -o \
-iname ‘PC-Sicherung*’ -o \
-iname ‘PC-Sicherungen*’ -o \
-iname ‘Serversicherung*’ -o \
-iname ‘dump’ -o \
-iname ‘images’ \
\) \
-print
} | tee “$PRUNE/old-backup-candidate-dirs.txt”
“`
Then make a size report:
“`bash
# Size report for candidate dirs
while IFS= read -r d; do
[ -d “$d” ] || continue
du -sh “$d” 2>/dev/null
done < "$PRUNE/old-backup-candidate-dirs.txt" \
| sort -h \
| tee "$PRUNE/old-backup-candidate-sizes.txt"
cat "$PRUNE/old-backup-candidate-sizes.txt"
```
Do **not** delete from that list wholesale yet. Some older backups may be historically important, and we have already seen that “old” can still become strategically useful.
If you want a stricter list aimed at low-risk deletion, I would start only with obvious old PC image backups, not `dump`, not `images`, and not anything inside our current forensic directory:
```bash
# Conservative old PC-backup candidates only, no deletion
find /mnt/pve/MYCLOUD-310867 /mnt/pve/MYCLOUD-159 \
-mindepth 2 -maxdepth 6 \
-type d \
-mtime +180 \
\( -iname 'Backup 20*' \) \
-print \
| grep -Ei 'PC-Sicherung|PC-Sicherungen|Serversicherung|WindowsImageBackup' \
| grep -v 'b2-facts-forensic' \
| tee "$PRUNE/conservative-delete-candidates.txt"
while IFS= read -r d; do
[ -d "$d" ] || continue
du -sh "$d" 2>/dev/null
done < "$PRUNE/conservative-delete-candidates.txt" \
| sort -h \
| tee "$PRUNE/conservative-delete-candidates-sizes.txt"
cat "$PRUNE/conservative-delete-candidates-sizes.txt"
```
Only after reviewing that list would I delete, and I would save the manifest first:
```bash
cp -a "$PRUNE/conservative-delete-candidates.txt" "$PRUNE/APPROVED-DELETE-LIST.txt"
```
Then, only when you are sure:
```bash
# Execute only after review
while IFS= read -r d; do
[ -n "$d" ] || continue
[ -d "$d" ] || continue
echo "Deleting: $d"
rm -rf --one-file-system "$d"
done < "$PRUNE/APPROVED-DELETE-LIST.txt"
df -h /mnt/pve/MYCLOUD-310867 /mnt/pve/MYCLOUD-159
```
For now, my recommendation is:
1. Open SSH from your IP only.
2. Start the detached holding-copy job to `MYCLOUD-310867`.
3. Build the prune inventory while it runs, but defer deletion unless space becomes a real constraint.
The root filesystem at `/` is the one under pressure, not the NAS. So the highest priority is still: **keep all new artifacts on NAS, not `/root`, `/tmp`, or `/var`.**
## Prompt:
04/06/2026, 11:49:16
Here are those returns. I shall strictly follow your strategy... no variations on my side to this.
###
} | tee "$PRUNE/old-backup-candidate-dirs.txt"
Thu Jun 4 11:46:01 AM CEST 2026
pve
Filesystem Size Used Avail Use% Mounted on
//192.168.127.128/Public 7.3T 1.9T 5.4T 26% /mnt/pve/MYCLOUD-310867
//192.168.127.159/Public 3.6T 2.7T 939G 75% /mnt/pve/MYCLOUD-159
===== Candidate backup directories older than 180 days =====
/mnt/pve/MYCLOUD-310867/images
/mnt/pve/MYCLOUD-310867/EPSON/_cdres/_html/images
/mnt/pve/MYCLOUD-310867/EPSON/Manual/SetupGuide/images
/mnt/pve/MYCLOUD-310867/EPSON/Manual/PanelGuide/images
/mnt/pve/MYCLOUD-310867/PC-Sicherungen
/mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC1/Backup 2024-11-24 180005
/mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC2/Backup 2024-11-26 222300
/mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC3/Backup 2025-01-18 154321
/mnt/pve/MYCLOUD-159/Serversicherung
/mnt/pve/MYCLOUD-159/Serversicherung/PC1/Backup 2024-07-13 201049
/mnt/pve/MYCLOUD-159/Serversicherung/PC2/Backup 2024-07-14 103757
/mnt/pve/MYCLOUD-159/Serversicherung/PC3/Backup 2024-07-15 204225
/mnt/pve/MYCLOUD-159/Webserver/admin/images
/mnt/pve/MYCLOUD-159/Webserver/images
/mnt/pve/MYCLOUD-159/PC-Sicherung
/mnt/pve/MYCLOUD-159/PC-Sicherung/PC1/Backup 2024-05-17 103110
/mnt/pve/MYCLOUD-159/PC-Sicherung/PC2/Backup 2024-04-12 052558
/mnt/pve/MYCLOUD-159/PC-Sicherung/PC3/Backup 2024-04-17 052104
/mnt/pve/MYCLOUD-159/WindowsImageBackup
/mnt/pve/MYCLOUD-159/WindowsImageBackup/PC2/Backup 2023-11-20 225903
/mnt/pve/MYCLOUD-159/images
root@pve:~# # Size report for candidate dirs
while IFS= read -r d; do
[ -d "$d" ] || continue
du -sh "$d" 2>/dev/null
done < "$PRUNE/old-backup-candidate-dirs.txt" \
| sort -h \
| tee "$PRUNE/old-backup-candidate-sizes.txt"
cat "$PRUNE/old-backup-candidate-sizes.txt"
0 /mnt/pve/MYCLOUD-159/images
0 /mnt/pve/MYCLOUD-310867/images
192K /mnt/pve/MYCLOUD-310867/EPSON/Manual/SetupGuide/images
216K /mnt/pve/MYCLOUD-310867/EPSON/_cdres/_html/images
436K /mnt/pve/MYCLOUD-159/Webserver/admin/images
3.0M /mnt/pve/MYCLOUD-310867/EPSON/Manual/PanelGuide/images
9.2M /mnt/pve/MYCLOUD-159/Webserver/images
56M /mnt/pve/MYCLOUD-159/WindowsImageBackup
56M /mnt/pve/MYCLOUD-159/WindowsImageBackup/PC2/Backup 2023-11-20 225903
15G /mnt/pve/MYCLOUD-159/PC-Sicherung/PC2/Backup 2024-04-12 052558
21G /mnt/pve/MYCLOUD-159/PC-Sicherung/PC3/Backup 2024-04-17 052104
216G /mnt/pve/MYCLOUD-159/Serversicherung/PC1/Backup 2024-07-13 201049
219G /mnt/pve/MYCLOUD-159/PC-Sicherung/PC1/Backup 2024-05-17 103110
228G /mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC1/Backup 2024-11-24 180005
241G /mnt/pve/MYCLOUD-159/Serversicherung/PC2/Backup 2024-07-14 103757
253G /mnt/pve/MYCLOUD-159/PC-Sicherung
255G /mnt/pve/MYCLOUD-159/Serversicherung/PC3/Backup 2024-07-15 204225
256G /mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC2/Backup 2024-11-26 222300
274G /mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC3/Backup 2025-01-18 154321
712G /mnt/pve/MYCLOUD-159/Serversicherung
757G /mnt/pve/MYCLOUD-310867/PC-Sicherungen
0 /mnt/pve/MYCLOUD-159/images
0 /mnt/pve/MYCLOUD-310867/images
192K /mnt/pve/MYCLOUD-310867/EPSON/Manual/SetupGuide/images
216K /mnt/pve/MYCLOUD-310867/EPSON/_cdres/_html/images
436K /mnt/pve/MYCLOUD-159/Webserver/admin/images
3.0M /mnt/pve/MYCLOUD-310867/EPSON/Manual/PanelGuide/images
9.2M /mnt/pve/MYCLOUD-159/Webserver/images
56M /mnt/pve/MYCLOUD-159/WindowsImageBackup
56M /mnt/pve/MYCLOUD-159/WindowsImageBackup/PC2/Backup 2023-11-20 225903
15G /mnt/pve/MYCLOUD-159/PC-Sicherung/PC2/Backup 2024-04-12 052558
21G /mnt/pve/MYCLOUD-159/PC-Sicherung/PC3/Backup 2024-04-17 052104
216G /mnt/pve/MYCLOUD-159/Serversicherung/PC1/Backup 2024-07-13 201049
219G /mnt/pve/MYCLOUD-159/PC-Sicherung/PC1/Backup 2024-05-17 103110
228G /mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC1/Backup 2024-11-24 180005
241G /mnt/pve/MYCLOUD-159/Serversicherung/PC2/Backup 2024-07-14 103757
253G /mnt/pve/MYCLOUD-159/PC-Sicherung
255G /mnt/pve/MYCLOUD-159/Serversicherung/PC3/Backup 2024-07-15 204225
256G /mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC2/Backup 2024-11-26 222300
274G /mnt/pve/MYCLOUD-310867/PC-Sicherungen/PC3/Backup 2025-01-18 154321
712G /mnt/pve/MYCLOUD-159/Serversicherung
757G /mnt/pv
###
## Response:
04/06/2026, 11:49:19
Excellent. This confirms we **do not need to delete anything before the holding copy**.
The important reading:
```text
MYCLOUD-310867: 5.4T free
MYCLOUD-159: 939G free
```
The large candidate deletion items are mostly old PC image backups, but there are also false positives like `images`, EPSON manual images, and Webserver images. Also, do **not** delete parent folders like `PC-Sicherungen`, `Serversicherung`, or `PC-Sicherung` as a category; only leaf backup folders, and only after explicit review.
For now: **no deletion.** We preserve first.
Run this next to create a “do-not-delete-yet” marker and proceed with the holding copy:
```bash
PRUNE=$(ls -td /mnt/pve/MYCLOUD-310867/prune-inventory-* | head -1)
{
date
echo "Decision: no deletion performed before VM100 holding copy."
echo "Reason: MYCLOUD-310867 has sufficient free space for current preservation work."
echo "Old-backup inventory exists for later review only."
} | tee "$PRUNE/NO-DELETION-BEFORE-HOLDING-COPY.txt"
cat "$PRUNE/NO-DELETION-BEFORE-HOLDING-COPY.txt"
```
Now start the holding-copy job. This version writes all job artifacts to the NAS and uses the confirmed Windows disk:
```bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
HOLD="/mnt/pve/MYCLOUD-310867/vm100-holding-$(date +%F-%H%M)"
mkdir -p "$HOLD"
SRC_MAIN="/dev/local-lvm-nvme0n1/vm-100-disk-1"
SRC_EFI="/dev/local-lvm-nvme0n1/vm-100-disk-0"
SRC_TPM="/dev/local-lvm-nvme0n1/vm-100-disk-2"
{
date
hostname
echo "HOLD=$HOLD"
echo "SRC_MAIN=$SRC_MAIN"
echo "SRC_EFI=$SRC_EFI"
echo "SRC_TPM=$SRC_TPM"
echo
qm status 100
echo
qm config 100
echo
df -h / "$HOLD"
echo
blockdev --getsize64 "$SRC_MAIN" "$SRC_EFI" "$SRC_TPM"
echo
qemu-img info -f raw "$SRC_MAIN"
} | tee "$HOLD/preflight.txt"
```
Then create and launch the detached job:
```bash
cat > “$HOLD/copy-vm100-holding.sh” <
EOF
chmod +x “$HOLD/copy-vm100-holding.sh”
nohup bash “$HOLD/copy-vm100-holding.sh” >/dev/null 2>&1 &
echo $! | tee “$HOLD/copy.pid”
echo “HOLD=$HOLD”
echo “PID=$(cat “$HOLD/copy.pid”)”
“`
Monitor with:
“`bash
tail -f “$HOLD/copy.log”
“`
If the console times out, reconnect and run:
“`bash
HOLD=$(ls -td /mnt/pve/MYCLOUD-310867/vm100-holding-* | head -1)
cat “$HOLD/copy.pid”
ps -p “$(cat “$HOLD/copy.pid”)” -o pid,etime,pcpu,pmem,cmd
tail -120 “$HOLD/copy.log”
du -h “$HOLD”
df -h “$HOLD”
“`
We preserve first. We prune only if the copy or validation proves we need more space.
## Prompt:
04/06/2026, 11:59:24
Commencing… The server log in the GUI is complaining about not having enough room to write the log, but that is expected, I believe:
###
echo “PID=$(cat “$HOLD/copy.pid”)”ng.sh” >/dev/null 2>&1 &
[1] 1186000
1186000
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
PID=1186000
root@pve:~# tail -f “$HOLD/copy.log”
===== COPY SMALL EFI / TPM RAW =====
4+0 records in
4+0 records out
4194304 bytes (4.2 MB, 4.0 MiB) copied, 0.368002 s, 11.4 MB/s
4+0 records in
4+0 records out
4194304 bytes (4.2 MB, 4.0 MiB) copied, 0.366569 s, 11.4 MB/s
===== COPY MAIN DISK TO COMPRESSED QCOW2 =====
(0.00/100%)
###
and see image.
## Response:
04/06/2026, 11:59:27
> **Responding to system error concerns**
>
> The user mentioned a full root filesystem affecting the pveproxy log and causing GUI errors. Since the QEMU process doesn’t write to temp space, it should be fine. Suggest clearing small log files under /var/log to free some space without impacting root or LVM storage. Monitoring commands are still needed.
>
> **Providing guidance on root full and qemu-img process**
>
> If the root filesystem is full, qemu-img might show 0% progress during a long convert. It will read the entire 2TB, but -S skips zeros. The copy shouldn’t be affected, but monitoring the process is key. Verify the process is alive and check for growing output size. A reboot isn’t needed.
>
> Thought for 17s
Yes — that GUI syslog warning is expected given `/` is full:
“`text
No space left on device at /usr/share/perl5/PVE/APIServer/AnyEvent.pm
error writing access log
“`
That is Proxmox failing to write its **access log on the root filesystem**. It is unpleasant, but it should **not affect the holding-copy job**, because our job is writing to:
“`text
/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
“`
and both the script and log are on the NAS.
The main job is running as PID `1186000`, and the copy has correctly passed EFI/TPM and entered the large disk conversion:
“`text
===== COPY MAIN DISK TO COMPRESSED QCOW2 =====
(0.00/100%)
“`
At 2 TB logical size, `0.00%` can remain visible for a while. Do **not** interrupt it.
Use another shell or SSH session to monitor without disturbing the job:
“`bash
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
PID=$(cat “$HOLD/copy.pid”)
ps -p “$PID” -o pid,etime,pcpu,pmem,cmd
ls -lh “$HOLD”
du -h “$HOLD”
df -h “$HOLD” /
tail -40 “$HOLD/copy.log”
“`
If the GUI or terminal times out, reconnect and run:
“`bash
HOLD=$(ls -td /mnt/pve/MYCLOUD-310867/vm100-holding-* | head -1)
PID=$(cat “$HOLD/copy.pid”)
ps -p “$PID” -o pid,etime,pcpu,pmem,cmd
tail -80 “$HOLD/copy.log”
du -h “$HOLD”
“`
`tail -f` is safe to stop with `Ctrl-C`; that stops only the viewing of the log, **not** the detached copy job.
I would also open the temporary SSH path now if convenient:
“`text
WAN:2222 from your public IP only -> Proxmox LAN IP:22
“`
That gives us a safer lifeline while the GUI is struggling with root filesystem logging.
For now: hold, monitor, do not prune, do not reboot, do not start the VM.
## Prompt:
04/06/2026, 13:17:05
The copy seems to have finished:
###
disk size: 21.4 GiB
No errors were found on the image.
564264/33554432 = 1.68% allocated, 77.62% fragmented, 75.16% compressed clusters
Image end offset: 23074439168
===== HASHES =====
8df0d6b088d8cd9e68d9ace446d5b1a102c46691dd025dd15ff99386fba7a1d9 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
d5f65f268ed4a978f6e7ac7fd4d6cc7eebcd60f2c8bc79d593d1ba5397ffb6b6 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-efidisk0-vm-100-disk-0.raw
3c014881017af9900d4086055d2383b825138c9fd49ef75166a0f34363e67966 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-tpmstate0-vm-100-disk-2.raw
===== FINAL SIZE =====
total 22G
-rwxr-xr-x 1 root root 3.4K Jun 4 11:52 copy.log
-rwxr-xr-x 1 root root 8 Jun 4 11:52 copy.pid
-rwxr-xr-x 1 root root 1.3K Jun 4 11:52 copy-vm100-holding.sh
-rwxr-xr-x 1 root root 1.6K Jun 4 11:51 preflight.txt
-rwxr-xr-x 1 root root 470 Jun 4 12:32 SHA256SUMS.txt
-rwxr-xr-x 1 root root 4.0M Jun 4 11:52 vm-100-efidisk0-vm-100-disk-0.raw
-rwxr-xr-x 1 root root 22G Jun 4 12:31 vm-100-sata0-vm-100-disk-1-holding.qcow2
-rwxr-xr-x 1 root root 4.0M Jun 4 11:52 vm-100-tpmstate0-vm-100-disk-2.raw
22G /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
===== DONE =====
Thu Jun 4 01:04:25 PM CEST 2026
###
Would it be at some point possible to activate Tailscale on this server? I cannot even update right now, I know that.
## Response:
04/06/2026, 13:17:08
> **Considering Tailscale activation on a server**
>
> The user might be asking about activating Tailscale on a server, but there’s no clear need for me to search based on the request. I can answer with general strategy, though, it’s possible the installation process could change by 2025. Given the critical recovery status, I don’t think web searching is required right now.
>
> **Recommending Tailscale install tips and system requirements**
>
> [aws.tailscale.com](https://aws.tailscale.com/kb/guides/)
>
> **Considering searching or documentation**
>
> Searching doesn’t seem like the best approach here. Maybe I should just refer to the official documentation instead to get more reliable information. It might be quicker and more accurate for what the user needs. I’ll stick to the docs for now.
>
> **Opening documentation for search troubleshooting**
>
> [Install Tailscale on Linux · Tailscale Docs](https://tailscale.com/docs/install/linux)
> [Tailscale Packages – stable track](https://pkgs.tailscale.com/stable/)
> [How to Install Tailscale on Debian 13 – HostMyCode](https://www.hostmycode.com/tutorials/how-to-install-tailscale-on-debian-13)
> [Installation and Distribution | tailscale/tailscale | DeepWiki](https://deepwiki.com/tailscale/tailscale/8.3-installation-and-distribution)
> [Debian bookworm — Installation Guide](https://www.debian.org/releases/bookworm/installmanual)
> [AirPost](https://airpost.blog/setting-up-tailscale-on-debian-bookworm-with-proxmox-a-step-by-step-guide/)
> [Debian Bookworm CLI install fails to launch authentication … – GitHub](https://github.com/tailscale/tailscale/issues/10888)
> [Tailscale Debian Bookworm · GitHub](https://gist.github.com/abunch/00c94085b879cc35228c69343e7ad693)
> [ac-training-lab.readthedocs.io](https://ac-training-lab.readthedocs.io/en/latest/_sources/tailscale-setup.md)
>
> **Responding to the Tailscale request**
>
> I’ll respond that Tailscale installation isn’t feasible until root access is cleaned up. I can mention that the Linux installation uses a curl script or package manager, and Tailscale requires the tun kernel module. I’ll also suggest considering a static binary on a NAS. I’ll create a safe plan.
>
> **Considering next steps for user and Tailscale installation**
>
> Since we’ve used web information, I should cite sources for the Tailscale docs. However, most of the information seems based on user data or their prior message, so I don’t think I need a citation unless it’s something specific like the uploaded file. As for the Tailscale question, I would advise not installing it until there’s 1-2GB free space.
>
> Thought for 26s
Excellent – the holding copy completed cleanly.
We now have a preserved copy of the current stopped VM state on NAS:
“`text
Main Windows disk QCOW2: 22G / logical 2T
qemu-img check: No errors found
QCOW2 SHA256:
8df0d6b088d8cd9e68d9ace446d5b1a102c46691dd025dd15ff99386fba7a1d9
EFI raw SHA256:
d5f65f268ed4a978f6e7ac7fd4d6cc7eebcd60f2c8bc79d593d1ba5397ffb6b6
TPM raw SHA256:
3c014881017af9900d4086055d2383b825138c9fd49ef75166a0f34363e67966
“`
That is a major safety milestone. The active LVM-thin substrate remains untouched except for reads.
## Tailscale
Yes, Tailscale can very likely be activated later, but **I would not do it right now** while `/` is at 100%. Official Tailscale Linux installation normally uses either the install script/package repository flow and then `tailscale up`, and it requires normal system integration plus the `tun` kernel module; all of that can write under `/usr`, `/etc`, `/var/lib`, systemd state/log locations, and apt metadata. ([Tailscale](https://tailscale.com/docs/install/linux?utm_source=chatgpt.com))
There is also a static-binary path documented by Tailscale, but even that still runs `tailscaled` and creates state; it is useful when package-manager install is undesirable, but it is not the move I would make on a root filesystem that is already full during an active recovery. ([Tailscale](https://tailscale.com/docs/install/linux?utm_source=chatgpt.com))
My recommendation:
1. Keep the temporary router rule for SSH from your IP only.
2. Finish database validation from NAS copies.
3. Free a small, controlled amount of space on `/`, not the NAS.
4. Then install Tailscale cleanly and disable key expiry for this server in the admin console if it is meant to remain reachable long-term. Tailscale’s docs specifically mention disabling key expiry for servers that should stay continuously connected. ([Tailscale](https://tailscale.com/docs/install/linux?utm_source=chatgpt.com))
For now, I would mark this preservation rung:
“`bash
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
{
date
echo “VM100 holding copy completed.”
echo “VM was stopped before copy.”
echo “Main disk copied from /dev/local-lvm-nvme0n1/vm-100-disk-1 to compressed QCOW2.”
echo “qemu-img check reported no errors.”
cat “$HOLD/SHA256SUMS.txt”
} | tee “$HOLD/PRESERVATION-COMPLETE.txt”
cat “$HOLD/PRESERVATION-COMPLETE.txt”
“`
Then we can proceed with validation of the reconstructed `facts_neubing.db` candidate, using only copies.
—
**Sources:**
– [Install Tailscale on Linux · Tailscale Docs](https://tailscale.com/docs/install/linux?utm_source=chatgpt.com)
## Prompt:
04/06/2026, 13:20:28
You are likely planning this, but when do we add the NAS disk-1 and detach the current one for later re-attach. Holding in lock-step with you…
## Response:
04/06/2026, 13:20:36
> **Considering VM disk swap with NAS disk-1**
>
> I need to help with adding “NAS disk-1” while detaching the current one. From what I understand, the setup involves a VM with one main disk and some backups. The task seems to ask for testing with the detached current disk and attaching the NAS copy. But Proxmox can’t directly attach an SMB-hosted qcow2 unless the storage supports image formats. I’ll need to verify if the existing CIFS storage supports that.
>
> **Planning safe VM disk swap and testing**
>
> I want to avoid detaching the current LVM disk until we’re sure everything’s validated. The plan is to test the DB using a cloned/test VM on NAS or a copy, without altering the main setup. I’ll proceed step by step: (1) preservation, (2) DB copy to test disk, (3) create test VM from NAS or temporary storage. I also need to confirm if MYCLOUD-310867 and MYCLOUD-159 can store images.
>
> **Timing and sequence for NAS disk swap**
>
> They’re asking when to add NAS disk-1 and detach the current one. I’d suggest waiting until after validating the DB copy on NAS. The steps should be: (1) preserve, (2) create DB copy, (3) validate using a test VM. It’s better to use a cloned holding image as the boot disk for testing instead of modifying the current VM disk. We could run into performance issues on SMB, but snapshot mode might help with writing to the NAS image.
>
> **Creating test VM with NAS overlay for DB validation**
>
> It seems best to create a qcow2 overlay on NAS using a base image. I’d attach the overlay to a test VM to keep the base read-only. For Windows boot, I might need EFI and TPM, although perhaps not for BitLocker. Instead of booting a VM for DB validation, I could mount the qcow2 and copy the DB into Windows directly. However, the NAS attachment test likely still needs to happen.
>
> Thought for 54s
Yes — but **not yet** as the next move.
My recommendation is:
“`text
Do not detach the current VM100 sata0 yet.
Do not boot VM100 yet.
Do not attach the NAS disk to VM100 yet.
“`
We have now preserved the current active disk as a NAS QCOW2 holding image, which is excellent. But the current VM config is still our clean reference point. I would keep it untouched until the reconstructed `facts_neubing.db` candidate has been validated from a copy.
The next rung should be:
1. Preserve current state — done.
2. Validate reconstructed DB candidate from NAS/Windows copy.
3. Only then create a **test path**, preferably a separate test VM or overlay, not VM100 itself.
4. Detach VM100’s current disk only when we know exactly what we are replacing it with.
The reason is simple: detaching `sata0` is a config mutation. It should not damage the LV if done correctly, but this entire recovery was born from a config/disk-management ambiguity. We do not need to introduce that risk while we still have validation work available from copies.
## What I would do now
First mark the holding copy as complete and preserve the exact VM config beside it:
“`bash
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
{
date
echo “VM100 current disk preserved before any detach/re-attach testing.”
echo
qm status 100
echo
qm config 100
echo
cat “$HOLD/SHA256SUMS.txt”
} | tee “$HOLD/VM100-HOLDING-STATE-BEFORE-ANY-DETACH.txt”
cat “$HOLD/VM100-HOLDING-STATE-BEFORE-ANY-DETACH.txt”
“`
Then create the validation copy of our recovered DB candidate:
“`bash
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
NEXT=”$OUT/recovery-probes/db-reconstruction/full-db-reconstruction”
FULL=”$NEXT/facts_neubing.db.full-candidate-vote-continuity.bin”
VALID=”$NEXT/validation-copy”
mkdir -p “$VALID”
cp -a “$FULL” “$VALID/facts_neubing.db”
sha256sum “$VALID/facts_neubing.db” | tee “$VALID/facts_neubing.db.sha256”
ls -lh “$VALID/facts_neubing.db”
stat -c ‘bytes=%s’ “$VALID/facts_neubing.db”
“`
This gives us a clean file named as SQL Anywhere expects:
“`text
facts_neubing.db
“`
## When we attach NAS disk-1
I would only attach the NAS disk after one of these is true:
“`text
A. SQL Anywhere validation confirms the reconstructed DB candidate is usable; or
B. We decide we need a booted Windows test environment and will use the NAS QCOW2 copy/overlay, not the original LVM disk.
“`
Even then, I would prefer a **separate test VM** over modifying VM100. The safest form is:
“`text
VM100 remains stopped and untouched.
A new temporary VM boots from a NAS-based copy or overlay.
We test there.
Only after success do we modify VM100.
“`
If we eventually must detach VM100’s current `sata0`, we do it as a final switch step, with config saved immediately before and after. But right now, the stronger move is validation from copies. We have won preservation; now we should win proof.
## Prompt:
04/06/2026, 13:30:25
Understood… _clearly._ Here is our return:
###
cat “$HOLD/VM100-HOLDING-STATE-BEFORE-ANY-DETACH.txt”
Thu Jun 4 01:28:17 PM CEST 2026
VM100 current disk preserved before any detach/re-attach testing.
status: stopped
acpi: 1
agent: 1,fstrim_cloned_disks=1
bios: ovmf
boot: order=sata0
cores: 7
cpu: x86-64-v2-AES
description: sata1%3A local-lvm-nvme0n1%3Avm-100-disk-3,backup=0,discard=on,size=2T,ssd=1%0Asata2%3A /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
efidisk0: local-lvm-nvme0n1:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
ide2: none,media=cdrom
machine: pc-q35-8.0
memory: 24576
meta: creation-qemu=8.0.2,ctime=1698450493
name: IN-Windows-Server-2022
net0: e1000=D2:1E:7F:7B:F0:CE,bridge=vmbr0,firewall=1
numa: 0
onboot: 1
ostype: win11
sata0: local-lvm-nvme0n1:vm-100-disk-1,cache=writeback,size=2T
sata2: /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
smbios1: uuid=120f8cb5-b93c-42fb-9656-9e2bb188b97c
sockets: 1
tpmstate0: local-lvm-nvme0n1:vm-100-disk-2,size=4M,version=v2.0
vmgenid: a30aa4fa-6a82-45a5-a1cd-c69b01f5f9ac
8df0d6b088d8cd9e68d9ace446d5b1a102c46691dd025dd15ff99386fba7a1d9 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
d5f65f268ed4a978f6e7ac7fd4d6cc7eebcd60f2c8bc79d593d1ba5397ffb6b6 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-efidisk0-vm-100-disk-0.raw
3c014881017af9900d4086055d2383b825138c9fd49ef75166a0f34363e67966 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-tpmstate0-vm-100-disk-2.raw
Thu Jun 4 01:28:17 PM CEST 2026
VM100 current disk preserved before any detach/re-attach testing.
status: stopped
acpi: 1
agent: 1,fstrim_cloned_disks=1
bios: ovmf
boot: order=sata0
cores: 7
cpu: x86-64-v2-AES
description: sata1%3A local-lvm-nvme0n1%3Avm-100-disk-3,backup=0,discard=on,size=2T,ssd=1%0Asata2%3A /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
efidisk0: local-lvm-nvme0n1:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
ide2: none,media=cdrom
machine: pc-q35-8.0
memory: 24576
meta: creation-qemu=8.0.2,ctime=1698450493
name: IN-Windows-Server-2022
net0: e1000=D2:1E:7F:7B:F0:CE,bridge=vmbr0,firewall=1
numa: 0
onboot: 1
ostype: win11
sata0: local-lvm-nvme0n1:vm-100-disk-1,cache=writeback,size=2T
sata2: /dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01,backup=0,size=488386584K
smbios1: uuid=120f8cb5-b93c-42fb-9656-9e2bb188b97c
sockets: 1
tpmstate0: local-lvm-nvme0n1:vm-100-disk-2,size=4M,version=v2.0
vmgenid: a30aa4fa-6a82-45a5-a1cd-c69b01f5f9ac
8df0d6b088d8cd9e68d9ace446d5b1a102c46691dd025dd15ff99386fba7a1d9 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
d5f65f268ed4a978f6e7ac7fd4d6cc7eebcd60f2c8bc79d593d1ba5397ffb6b6 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-efidisk0-vm-100-disk-0.raw
3c014881017af9900d4086055d2383b825138c9fd49ef75166a0f34363e67966 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-tpmstate0-vm-100-disk-2.raw
root@pve:~# OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
NEXT=”$OUT/recovery-probes/db-reconstruction/full-db-reconstruction”
FULL=”$NEXT/facts_neubing.db.full-candidate-vote-continuity.bin”
VALID=”$NEXT/validation-copy”
mkdir -p “$VALID”
cp -a “$FULL” “$VALID/facts_neubing.db”
sha256sum “$VALID/facts_neubing.db” | tee “$VALID/facts_neubing.db.sha256”
ls -lh “$VALID/facts_neubing.db”
stat -c ‘bytes=%s’ “$VALID/facts_neubing.db”
f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e /mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-reconstruction/full-db-reconstruction/validation-copy/facts_neubing.db
-rwxr-xr-x 1 root root 649M Jun 3 13:41 /mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-reconstruction/full-db-reconstruction/validation-copy/facts_neubing.db
bytes=679821312
root@pve:~#
###
## Response:
04/06/2026, 13:30:47
> **Clarifying steps for SQL Anywhere and validation**
>
> It looks like the user’s request involves ongoing IT recovery, likely using SQL Anywhere, and we need to confirm validation steps. It seems there might be file citations mentioned but not uploaded. I’ll guide the user to validate using SQL Anywhere tools, potentially by saving a validation manifest, using Windows commands, and testing with dbvalid/dbeng12. I’ll check if the tools need updating.
>
> **Guiding validation process for Proxmox and SQL Anywhere**
>
> It looks like the user is validating on Proxmox and possibly using SQL Anywhere tools on a Windows VM. We’ll start with non-invasive validation via page checks on Proxmox or NAS, checking for entropy and page signatures. For Windows, I’ll guide copying the validation database and logs. We’ll ensure no VM is accidentally started.
>
> Thought for 26s
Excellent. We now have three stabilized preservation artifacts:
“`text
1. VM100 current stopped-state holding copy: complete.
2. VM100 config-before-detach manifest: complete.
3. Reconstructed facts_neubing.db validation copy: complete.
“`
The duplicate text in `VM100-HOLDING-STATE-BEFORE-ANY-DETACH.txt` is harmless; it was likely appended or printed twice. The important values are preserved.
Next I would make a short, easy Windows-facing validation folder on the NAS so we do not have to navigate the long forensic path from Windows.
“`bash
# Create simple Windows-facing validation folder on NAS
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
NEXT=”$OUT/recovery-probes/db-reconstruction/full-db-reconstruction”
VALID=”$NEXT/validation-copy”
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
mkdir -p “$PUB”
cp -a “$VALID/facts_neubing.db” “$PUB/facts_neubing.db”
cp -a “$VALID/facts_neubing.db.sha256” “$PUB/facts_neubing.db.sha256”
{
date
echo “B2 / FACTS recovery validation bundle”
echo
echo “Recovered DB candidate:”
ls -lh “$PUB/facts_neubing.db”
stat -c ‘bytes=%s’ “$PUB/facts_neubing.db”
sha256sum “$PUB/facts_neubing.db”
echo
echo “Expected bytes from recovered MFT: 679821312”
echo “Candidate SHA256: f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e”
echo
echo “VM100 holding copy:”
cat “$HOLD/SHA256SUMS.txt”
echo
echo “Original long forensic source:”
echo “$VALID/facts_neubing.db”
} | tee “$PUB/README-VALIDATION.txt”
cat “$PUB/README-VALIDATION.txt”
“`
Mirror everything:
“`bash
rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
rsync -aH –info=progress2 “$PUB/” “/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION/”
“`
From Windows, the simple path should be:
“`text
\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db
“`
Before using SQL Anywhere, copy it to a local Windows test folder, not directly from the NAS:
“`powershell
New-Item -ItemType Directory -Force C:\B2-Recovery-Test | Out-Null
Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
“C:\B2-Recovery-Test\facts_neubing.db” -Force
Get-FileHash C:\B2-Recovery-Test\facts_neubing.db -Algorithm SHA256
Get-Item C:\B2-Recovery-Test\facts_neubing.db | Select-Object FullName, Length, LastWriteTime
“`
Expected SHA256:
“`text
F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
Then find SQL Anywhere 12 tools:
“`powershell
$roots = @(
“C:\Program Files\SQL Anywhere 12”,
“C:\Program Files (x86)\SQL Anywhere 12”,
“C:\Programme\SQL Anywhere 12”,
“C:\Programme (x86)\SQL Anywhere 12″
)
Get-ChildItem $roots -Recurse -ErrorAction SilentlyContinue |
Where-Object { $_.Name -match ‘^(dbeng12|dbsrv12|dbvalid|dbinfo|dblog|dbtran)\.exe$’ } |
Select-Object FullName |
Sort-Object FullName
“`
Do **not** start production software against it yet. First we just discover available validation tools. If `dbinfo.exe`, `dblog.exe`, or `dbvalid.exe` exists, paste the tool paths and we choose the least-mutating validation command.
The current standing rule remains: VM100 stopped, no detach, no reattach, no production start. We validate the recovered `.db` from a copy first.
## Prompt:
04/06/2026, 13:39:22
root@pve:~# # Create simple Windows-facing validation folder on NAS
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt)
NEXT=”$OUT/recovery-probes/db-reconstruction/full-db-reconstruction”
VALID=”$NEXT/validation-copy”
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
mkdir -p “$PUB”
cp -a “$VALID/facts_neubing.db” “$PUB/facts_neubing.db”
cp -a “$VALID/facts_neubing.db.sha256” “$PUB/facts_neubing.db.sha256”
{
date
echo “B2 / FACTS recovery validation bundle”
echo
echo “Recovered DB candidate:”
ls -lh “$PUB/facts_neubing.db”
stat -c ‘bytes=%s’ “$PUB/facts_neubing.db”
sha256sum “$PUB/facts_neubing.db”
echo
echo “Expected bytes from recovered MFT: 679821312”
echo “Candidate SHA256: f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e”
echo
echo “VM100 holding copy:”
cat “$HOLD/SHA256SUMS.txt”
echo
echo “Original long forensic source:”
echo “$VALID/facts_neubing.db”
} | tee “$PUB/README-VALIDATION.txt”
cat “$PUB/README-VALIDATION.txt”
Thu Jun 4 01:32:54 PM CEST 2026
B2 / FACTS recovery validation bundle
Recovered DB candidate:
-rwxr-xr-x 1 root root 649M Jun 3 13:41 /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/facts_neubing.db
bytes=679821312
f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/facts_neubing.db
Expected bytes from recovered MFT: 679821312
Candidate SHA256: f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e
VM100 holding copy:
8df0d6b088d8cd9e68d9ace446d5b1a102c46691dd025dd15ff99386fba7a1d9 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
d5f65f268ed4a978f6e7ac7fd4d6cc7eebcd60f2c8bc79d593d1ba5397ffb6b6 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-efidisk0-vm-100-disk-0.raw
3c014881017af9900d4086055d2383b825138c9fd49ef75166a0f34363e67966 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-tpmstate0-vm-100-disk-2.raw
Original long forensic source:
/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-reconstruction/full-db-reconstruction/validation-copy/facts_neubing.db
Thu Jun 4 01:32:54 PM CEST 2026
B2 / FACTS recovery validation bundle
Recovered DB candidate:
-rwxr-xr-x 1 root root 649M Jun 3 13:41 /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/facts_neubing.db
bytes=679821312
f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/facts_neubing.db
Expected bytes from recovered MFT: 679821312
Candidate SHA256: f251939b737acfdfc7407fa1bb9343e6fa11bea26d295d40b986fadf49fcc78e
VM100 holding copy:
8df0d6b088d8cd9e68d9ace446d5b1a102c46691dd025dd15ff99386fba7a1d9 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
d5f65f268ed4a978f6e7ac7fd4d6cc7eebcd60f2c8bc79d593d1ba5397ffb6b6 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-efidisk0-vm-100-disk-0.raw
3c014881017af9900d4086055d2383b825138c9fd49ef75166a0f34363e67966 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-tpmstate0-vm-100-disk-2.raw
Original long forensic source:
/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-reconstruction/full-db-reconstruction/validation-copy/facts_neubing.db
root@pve:~# rsync -aH –info=progress2 “$OUT/” “$MIRROR/”
rsync -aH –info=progress2 “$PUB/” “/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION/”
214 0% 0.00kB/s 0:00:03 (xfr#1, to-chk=0/293)
679,822,673 100% 5.63MB/s 0:01:55 (xfr#3, to-chk=0/4)
root@pve:~# New-Item -ItemType Directory -Force C:\B2-Recovery-Test | Out-Null
Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
“C:\B2-Recovery-Test\facts_neubing.db” -Force
Get-FileHash C:\B2-Recovery-Test\facts_neubing.db -Algorithm SHA256
Get-Item C:\B2-Recovery-Test\facts_neubing.db | Select-Object FullName, Length, LastWriteTime
-bash: Out-Null: command not found
-bash: New-Item: command not found
## Response:
04/06/2026, 13:39:27
All good — nothing bad happened. You pasted **PowerShell** into the Proxmox **bash** shell. The `>` prompt means bash is waiting for a continued line because of the PowerShell backtick.
Press:
“`bash
Ctrl-C
“`
You should return to:
“`bash
root@pve:~#
“`
The NAS validation bundle and mirror are complete. The important result is:
“`text
\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db
\\192.168.127.159\Public\B2-RECOVERY-VALIDATION\facts_neubing.db
“`
Now run the next commands in **Windows PowerShell**, not on Proxmox.
“`powershell
New-Item -ItemType Directory -Force C:\B2-Recovery-Test | Out-Null
Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
“C:\B2-Recovery-Test\facts_neubing.db” -Force
Get-FileHash C:\B2-Recovery-Test\facts_neubing.db -Algorithm SHA256
Get-Item C:\B2-Recovery-Test\facts_neubing.db |
Select-Object FullName, Length, LastWriteTime
“`
Expected hash:
“`text
F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
Then still in Windows PowerShell, find SQL Anywhere tools:
“`powershell
$roots = @(
“C:\Program Files\SQL Anywhere 12”,
“C:\Program Files (x86)\SQL Anywhere 12”,
“C:\Programme\SQL Anywhere 12”,
“C:\Programme (x86)\SQL Anywhere 12”
)
Get-ChildItem $roots -Recurse -ErrorAction SilentlyContinue |
Where-Object { $_.Name -match ‘^(dbeng12|dbsrv12|dbvalid|dbinfo|dblog|dbtran)\.exe$’ } |
Select-Object FullName |
Sort-Object FullName
“`
Paste the hash result and the SQL Anywhere tool paths. Then we choose the least-mutating validation command. Do not start the production FACTS software against the recovered DB yet.
## Prompt:
04/06/2026, 13:43:42
In order to run those commands, I’ll use a Window 11 node on their network which the customer kept up for me to use should I need it. I forgot this and didn’t report this to you before. I apologize. I shall now perform those commands there and the need for ssh configuration on the Proxmox server have become unnecessary.
## Response:
04/06/2026, 13:43:45
No apology needed — that is actually better.
Use the Windows 11 node as the validation workstation. That keeps Proxmox closed, avoids SSH exposure, and lets us test with Windows-native SQL Anywhere tools if they exist there.
On that Windows 11 machine, run PowerShell as Administrator if convenient, then:
“`powershell
New-Item -ItemType Directory -Force C:\B2-Recovery-Test | Out-Null
Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
“C:\B2-Recovery-Test\facts_neubing.db” -Force
Get-FileHash C:\B2-Recovery-Test\facts_neubing.db -Algorithm SHA256
Get-Item C:\B2-Recovery-Test\facts_neubing.db |
Select-Object FullName, Length, LastWriteTime
“`
Expected SHA256:
“`text
F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
Then find SQL Anywhere tools:
“`powershell
$roots = @(
“C:\Program Files\SQL Anywhere 12”,
“C:\Program Files (x86)\SQL Anywhere 12”,
“C:\Programme\SQL Anywhere 12”,
“C:\Programme (x86)\SQL Anywhere 12”,
“C:\B2”,
“C:\Program Files”,
“C:\Program Files (x86)”
)
Get-ChildItem $roots -Recurse -ErrorAction SilentlyContinue |
Where-Object { $_.Name -match ‘^(dbeng12|dbsrv12|dbvalid|dbinfo|dblog|dbtran)\.exe$’ } |
Select-Object FullName |
Sort-Object FullName
“`
Still do **not** start FACTS against the recovered DB. First paste the hash and tool paths; then we’ll choose the least-mutating validation command.
## Prompt:
04/06/2026, 14:00:01
I need to login. I have the credentials. Shall I use PowerShell 7 instead too?
###
Windows PowerShell
Copyright (C) Microsoft Corporation. Alle Rechte vorbehalten.
Installieren Sie die neueste PowerShell für neue Funktionen und Verbesserungen! https://aka.ms/PSWindows
PS C:\WINDOWS\system32> net use
Neue Verbindungen werden gespeichert.
Es sind keine Einträge in der Liste.
PS C:\WINDOWS\system32> New-Item -ItemType Directory -Force C:\B2-Recovery-Test | Out-Null
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
> > “C:\B2-Recovery-Test\facts_neubing.db” -Force
> > Copy-Item : Der Pfad “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” kann nicht gefunden werden, da
> > er nicht vorhanden ist.
> > In Zeile:1 Zeichen:1
– Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neub …
– “`
+ CategoryInfo : ObjectNotFound: (\\192.168.127.1…acts_neubing.db:String) [Copy-Item], ItemNotFoundExce
ption
+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.CopyItemCommand
“`
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Get-FileHash C:\B2-Recovery-Test\facts_neubing.db -Algorithm SHA256
Resolve-Path : Der Pfad “C:\B2-Recovery-Test\facts_neubing.db” kann nicht gefunden werden, da er nicht vorhanden ist.
In
C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules\Microsoft.PowerShell.Utility\Microsoft.PowerShell.Utility.psm1:110
Zeichen:36
– “`
$pathsToProcess += Resolve-Path $Path | Foreach-Objec …
“`
– “`
~~~~~~~~~~~~~~~~~~
“`
– CategoryInfo : ObjectNotFound: (C:\B2-Recovery-Test\facts_neubing.db:String) [Resolve-Path], ItemNotFou
ndException
– FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.ResolvePathCommand
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Get-Item C:\B2-Recovery-Test\facts_neubing.db |
> > Select-Object FullName, Length, LastWriteTime^C
> > PS C:\WINDOWS\system32> ping 192.168.127.128
Ping wird ausgeführt für 192.168.127.128 mit 32 Bytes Daten:
Antwort von 192.168.127.128: Bytes=32 Zeit=1ms TTL=64
Antwort von 192.168.127.128: Bytes=32 Zeit=1ms TTL=64
Antwort von 192.168.127.128: Bytes=32 Zeit=1ms TTL=64
Antwort von 192.168.127.128: Bytes=32 Zeit=1ms TTL=64
Ping-Statistik für 192.168.127.128:
Pakete: Gesendet = 4, Empfangen = 4, Verloren = 0
(0% Verlust),
Ca. Zeitangaben in Millisek.:
Minimum = 1ms, Maximum = 1ms, Mittelwert = 1ms
PS C:\WINDOWS\system32> ^C
PS C:\WINDOWS\system32>
###
## Response:
04/06/2026, 14:00:05
> **Providing SMB share login steps for Windows**
>
> The user seems to be asking for guidance on logging into an SMB share, potentially on a NAS with credentials. I’ll stick with Windows PowerShell, though suggesting PowerShell 7 isn’t necessary. The commands might include `net use` for mapping the share. If access issues arise, I’ll recommend checking the path with `Test-Path` and resolving network/credentials issues.
>
> Thought for 9s
Windows PowerShell 5.1 is perfectly fine here. PowerShell 7 is optional; no need to change shells for this.
The issue is almost certainly SMB authentication, not network reachability. `ping` proves the NAS is reachable; now we need to authenticate to `\\192.168.127.128\Public`.
First clear any stale SMB state, then connect:
“`powershell
net use \\192.168.127.128\Public /delete /y 2>$null
cmdkey /delete:192.168.127.128 2>$null
net use \\192.168.127.128\Public /user:USERNAME *
“`
Replace `USERNAME` with the NAS/share username. It will prompt for the password.
Then verify the directory exists:
“`powershell
dir “\\192.168.127.128\Public”
dir “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION”
“`
If that works, copy and hash:
“`powershell
New-Item -ItemType Directory -Force C:\B2-Recovery-Test | Out-Null
Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
“C:\B2-Recovery-Test\facts_neubing.db” -Force
Get-FileHash C:\B2-Recovery-Test\facts_neubing.db -Algorithm SHA256
Get-Item C:\B2-Recovery-Test\facts_neubing.db |
Select-Object FullName, Length, LastWriteTime
“`
Expected SHA256:
“`text
F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
If `.128` still refuses, try the mirrored NAS:
“`powershell
net use \\192.168.127.159\Public /delete /y 2>$null
cmdkey /delete:192.168.127.159 2>$null
net use \\192.168.127.159\Public /user:USERNAME *
dir “\\192.168.127.159\Public\B2-RECOVERY-VALIDATION”
“`
Then copy from:
“`powershell
Copy-Item “\\192.168.127.159\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
“C:\B2-Recovery-Test\facts_neubing.db” -Force
“`
Hold at the hash result before launching any SQL Anywhere tooling.
## Prompt:
04/06/2026, 14:07:25
Executed and ran with the first drive as expected:
###
PS C:\WINDOWS\system32> net use \\192.168.127.128\Public
Geben Sie den Benutzernamen für “192.168.127.128” ein: Neubing
Geben Sie das Kennwort für “192.168.127.128” ein:
Der Befehl wurde erfolgreich ausgeführt.
PS C:\WINDOWS\system32> dir “\\192.168.127.128\Public”
“`
Verzeichnis: \\192.168.127.128\Public
“`
Mode LastWriteTime Length Name
—
d—– 02.06.2026 19:19 b2-facts-forensic-2026-06-02-0925
d—– 04.06.2026 13:32 B2-RECOVERY-VALIDATION
d—– 31.05.2026 15:48 dump
d—– 11.11.2023 12:30 Duplicati – alt Sicherung
d—– 17.10.2024 00:31 EPSON
d—– 12.11.2023 06:43 images
d—– 27.10.2023 18:25 Nextcloud
d—– 19.01.2025 04:29 PC-Sicherungen
d—– 12.11.2023 06:43 private
d—– 04.06.2026 11:50 prune-inventory-2026-06-04-1145
d—– 12.11.2023 06:43 snippets
d—– 12.11.2023 06:43 template
d—– 04.06.2026 13:22 vm100-holding-2026-06-04-1151
d—– 27.10.2023 17:27 VPC
PS C:\WINDOWS\system32> dir “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION”
“`
Verzeichnis: \\192.168.127.128\Public\B2-RECOVERY-VALIDATION
“`
Mode LastWriteTime Length Name
—
-a—- 03.06.2026 13:41 679821312 facts_neubing.db
-a—- 04.06.2026 13:28 214 facts_neubing.db.sha256
-a—- 04.06.2026 13:32 1147 README-VALIDATION.txt
PS C:\WINDOWS\system32> New-Item -ItemType Directory -Force C:\B2-Recovery-Test | Out-Null
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.db” `
> > “C:\B2-Recovery-Test\facts_neubing.db” -Force
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> Get-FileHash C:\B2-Recovery-Test\facts_neubing.db -Algorithm SHA256
Algorithm Hash Path
—
SHA256 F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E C:\B2-Recovery-Test\facts_neu…
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Get-Item C:\B2-Recovery-Test\facts_neubing.db |
> > Select-Object FullName, Length, LastWriteTime
FullName Length LastWriteTime
—
C:\B2-Recovery-Test\facts_neubing.db 679821312 03.06.2026 13:41:40
PS C:\WINDOWS\system32>
###
## Response:
04/06/2026, 14:07:27
> **Considering database utilities**
>
> I’m weighing the different SQL Anywhere tools to gather info about a database. The “dbinfo” tool seems like a safer choice since it might be read-only, but I’m not sure. I could also try “dbvalid” for validating database connections. First, I should figure out which tools are available and check their versions and help info.
>
> Thought for 14s
Excellent. The local copy is verified.
“`text
C:\B2-Recovery-Test\facts_neubing.db
bytes = 679,821,312
SHA256 = F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
That matches exactly. We now have the recovered candidate on a Windows workstation, independent of Proxmox and independent of the NAS forensic path.
Next: discover SQL Anywhere tools only. No validation yet, no FACTS start yet.
Run this in the same Windows PowerShell:
“`powershell
$roots = @(
“C:\Program Files\SQL Anywhere 12”,
“C:\Program Files (x86)\SQL Anywhere 12”,
“C:\Programme\SQL Anywhere 12”,
“C:\Programme (x86)\SQL Anywhere 12”,
“C:\B2”,
“C:\Program Files”,
“C:\Program Files (x86)”
)
$tools = Get-ChildItem $roots -Recurse -ErrorAction SilentlyContinue |
Where-Object { $_.Name -match ‘^(dbeng12|dbsrv12|dbvalid|dbinfo|dblog|dbtran|dbunload|dbisql)\.exe$’ } |
Select-Object FullName, Length, LastWriteTime |
Sort-Object FullName
$tools | Format-Table -Auto
“`
Also search for any nearby SQL Anywhere DLL/bin folders:
“`powershell
Get-ChildItem $roots -Recurse -Directory -ErrorAction SilentlyContinue |
Where-Object { $_.FullName -match ‘SQL Anywhere|Sybase|Bin32|Bin64|B2|FACTS’ } |
Select-Object FullName |
Sort-Object FullName |
Format-Table -Auto
“`
Paste those results. Once we see the tool paths, the first validation step should be a **non-mutating information command**, likely `dbinfo` or `dblog` if available. We will not run `dbeng12`, `dbsrv12`, `dbvalid`, `dbunload`, or FACTS until we choose the safest invocation.
## Prompt:
04/06/2026, 14:15:35
Those tools are actually on the drive we are eventually going to recover in its entirety, but here is what was returned.
###
FullName
—
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\MANUAL
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\MANUAL\Xerox B215 Multifunction Printer
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\MANUAL\Xerox B215 Multifunction Printer\Common
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\PRINTER
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\PRINTER\SPL_PCL
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\PRINTER\SPL_PCL\amd64
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\PRINTER\SPL_PCL\common
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\PRINTER\SPL_PCL\i386
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Scanner
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Scanner\amd64
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Scanner\common
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Scanner\common\Profiles
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Scanner\common\ScanCDLM
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Scanner\common\TWAINDrv
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Scanner\i386
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\bin
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\Data
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\Data\bitmap
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\Data\bitmap\Model
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\Data\CDLMEngine
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\Data\CDLMEngine\win32
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\Data\Warranty
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\Script
C:\Program Files (x86)\Xerox\Xerox B215 Multifunction Printer\Setup\Setup\String
###
## Response:
04/06/2026, 14:15:37
> **Considering options for mounting disk in read-only mode**
>
> It seems like the user wants to extract tools from a qcow2 disk without risking any changes. I could mount it as read-only using qemu-nbd or guestmount on Proxmox or Windows. I’d want to avoid any mutations, especially since the root disk is full, and I should focus on inspecting rather than writing.
>
> Thought for 38s
Good. That return simply means the Windows 11 helper node does **not** have SQL Anywhere installed locally. That is fine.
The next best move is to extract the SQL Anywhere tools from the **NAS holding copy of VM100**, read-only, without booting VM100 and without touching the LVM-thin source.
We will mount the QCOW2 holding image read-only via `qemu-nbd`, inspect it, and copy only tool folders to the NAS validation bundle.
Run this on **Proxmox**, not Windows:
“`bash
# Read-only mount of VM100 holding QCOW2 to search for SQL Anywhere tools
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
QCOW=”$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
MNT=”$TOOLS_OUT/mount-ro”
mkdir -p “$TOOLS_OUT” “$MNT”
which qemu-nbd
modprobe nbd max_part=16
qemu-nbd –disconnect /dev/nbd0 2>/dev/null || true
qemu-nbd –read-only –connect=/dev/nbd0 “$QCOW”
sleep 3
partprobe /dev/nbd0 2>/dev/null || true
lsblk -o NAME,SIZE,FSTYPE,LABEL,UUID,MOUNTPOINTS /dev/nbd0 | tee “$TOOLS_OUT/nbd-lsblk.txt”
“`
Now choose and mount the largest NTFS partition read-only:
“`bash
WINPART=$(
for p in /dev/nbd0p*; do
[ -b “$p” ] || continue
TYPE=$(blkid -o value -s TYPE “$p” 2>/dev/null || true)
if [ “$TYPE” = “ntfs” ]; then
echo “$(blockdev –getsize64 “$p”) $p”
fi
done | sort -n | tail -1 | awk ‘{print $2}’
)
echo “WINPART=$WINPART” | tee “$TOOLS_OUT/winpart.txt”
mount -o ro “$WINPART” “$MNT” || mount -t ntfs3 -o ro “$WINPART” “$MNT” || mount -t ntfs-3g -o ro “$WINPART” “$MNT”
df -h “$MNT”
ls -la “$MNT” | tee “$TOOLS_OUT/mount-root-listing.txt”
“`
Now search narrowly for SQL Anywhere tooling:
“`bash
{
echo “===== SQL Anywhere tool files =====”
find “$MNT” \
\( -path “$MNT/Windows” -o -path “$MNT/Windows/*” \) -prune -o \
-type f \
\( -iname ‘dbeng12.exe’ -o -iname ‘dbsrv12.exe’ -o -iname ‘dbvalid.exe’ -o -iname ‘dbinfo.exe’ -o -iname ‘dblog.exe’ -o -iname ‘dbtran.exe’ -o -iname ‘dbunload.exe’ -o -iname ‘dbisql.exe’ \) \
-printf ‘%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ 2>/dev/null
echo
echo “===== SQL Anywhere directories =====”
find “$MNT” \
\( -path “$MNT/Windows” -o -path “$MNT/Windows/*” \) -prune -o \
-type d \
\( -iname ‘SQL Anywhere 12’ -o -iname ‘Sybase’ -o -iname ‘B2’ -o -iname ‘FACTS*’ \) \
-printf ‘%p\n’ 2>/dev/null
} | tee “$TOOLS_OUT/sqlanywhere-search.txt”
cat “$TOOLS_OUT/sqlanywhere-search.txt”
“`
If it finds a folder like:
“`text
/mnt/…/mount-ro/Program Files/SQL Anywhere 12
“`
then copy it to NAS:
“`bash
SQLDIR=$(grep -i ‘SQL Anywhere 12$’ “$TOOLS_OUT/sqlanywhere-search.txt” | head -1)
echo “SQLDIR=$SQLDIR”
if [ -n “$SQLDIR” ] && [ -d “$SQLDIR” ]; then
mkdir -p “$TOOLS_OUT/SQL Anywhere 12”
rsync -aH –info=progress2 “$SQLDIR/” “$TOOLS_OUT/SQL Anywhere 12/”
fi
find “$TOOLS_OUT” -type f \
\( -iname ‘dbeng12.exe’ -o -iname ‘dbsrv12.exe’ -o -iname ‘dbvalid.exe’ -o -iname ‘dbinfo.exe’ -o -iname ‘dblog.exe’ -o -iname ‘dbtran.exe’ -o -iname ‘dbunload.exe’ -o -iname ‘dbisql.exe’ \) \
-printf ‘%s\t%p\n’ | tee “$TOOLS_OUT/copied-tool-list.txt”
cat “$TOOLS_OUT/copied-tool-list.txt”
“`
Then cleanly detach the read-only mount:
“`bash
umount “$MNT”
qemu-nbd –disconnect /dev/nbd0
rsync -aH –info=progress2 “$PUB/” “/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION/”
“`
If the tools are found and copied, Windows should see them at:
“`text
\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\tools-from-vm100-holding\
“`
We will then copy the tools locally to `C:\B2-Recovery-Test\tools\` and run the least-mutating SQL Anywhere command from there.
## Prompt:
04/06/2026, 14:29:55
I now have a stable ssh connection (separate PowerShell window) from inside their network, but I need the environment variables again to set the bash up:
###
PS C:\Users\Neubing> ssh 192.168.127.99 -l root
The authenticity of host ‘192.168.127.99 (192.168.127.99)’ can’t be established.
ED25519 key fingerprint is SHA256:aVoSiLeqJ9dsBPbSWvvsk/7kN5Ah26v4ps260N9szqg.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added ‘192.168.127.99’ (ED25519) to the list of known hosts.
root@192.168.127.99’s password:
Linux pve 6.5.11-8-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.11-8 (2024-01-30T12:27Z) x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Wed Jun 3 10:55:24 2026
root@pve:~#
###
## Response:
04/06/2026, 14:29:57
Run this in the fresh SSH bash session. It rehydrates all paths we need and does not write anything except creating missing NAS directories if needed.
“`bash
# Rehydrate B2 / FACTS recovery environment
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt 2>/dev/null || ls -td /mnt/pve/MYCLOUD-310867/b2-facts-forensic-* | head -1)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt 2>/dev/null || echo “/mnt/pve/MYCLOUD-159/$(basename “$OUT”)”)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
PROBE=”$OUT/recovery-probes”
REC=”$PROBE/db-reconstruction”
NEXT=”$REC/full-db-reconstruction”
VALID=”$NEXT/validation-copy”
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151″
QCOW=”$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
MNT=”$TOOLS_OUT/mount-ro”
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
THIN=65536
OLD_VOLUME_BASE=16777216
CLUSTER=4096
mkdir -p “$PUB” “$PUB2” “$TOOLS_OUT” “$MNT”
echo “OUT=$OUT”
echo “MIRROR=$MIRROR”
echo “PUB=$PUB”
echo “PUB2=$PUB2”
echo “HOLD=$HOLD”
echo “QCOW=$QCOW”
echo “TOOLS_OUT=$TOOLS_OUT”
echo “MNT=$MNT”
echo “TMETA=$TMETA”
echo “TDATA=$TDATA”
echo “POOL=$POOL”
echo
df -h / “$PUB” “$PUB2”
echo
ls -lh “$QCOW” “$PUB/facts_neubing.db” 2>/dev/null
echo
qm status 100
“`
Then, because the next step is read-only mounting of the QCOW2, run this quick capability check:
“`bash
which qemu-nbd || true
lsmod | grep ‘^nbd’ || true
ls -l /dev/nbd* 2>/dev/null || true
“`
## Prompt:
04/06/2026, 14:32:14
Looking good iff you concur:
###
root@pve:~# # Rehydrate B2 / FACTS recovery environment
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt 2>/dev/null || ls -td /mnt/pve/MYCLOUD-310867/b2-facts-forensic-* | head -1)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt 2>/dev/null || echo “/mnt/pve/MYCLOUD-159/$(basename “$OUT”)”)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
PROBE=”$OUT/recovery-probes”
REC=”$PROBE/db-reconstruction”
NEXT=”$REC/full-db-reconstruction”
VALID=”$NEXT/validation-copy”
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151″
QCOW=”$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
MNT=”$TOOLS_OUT/mount-ro”
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
qm status 100″ “$PUB/facts_neubing.db” 2>/dev/null
OUT=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925
MIRROR=/mnt/pve/MYCLOUD-159/b2-facts-forensic-2026-06-02-0925
PUB=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION
PUB2=/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION
HOLD=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151
QCOW=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
TOOLS_OUT=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/tools-from-vm100-holding
MNT=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/tools-from-vm100-holding/mount-ro
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/pve-root 94G 90G 0 100% /
//192.168.127.128/Public 7.3T 1.9T 5.4T 27% /mnt/pve/MYCLOUD-310867
//192.168.127.159/Public 3.6T 2.7T 938G 75% /mnt/pve/MYCLOUD-159
-rwxr-xr-x 1 root root 649M Jun 3 13:41 /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/facts_neubing.db
-rwxr-xr-x 1 root root 22G Jun 4 12:31 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
status: stopped
root@pve:~# which qemu-nbd || true
lsmod | grep ‘^nbd’ || true
ls -l /dev/nbd* 2>/dev/null || true
/usr/bin/qemu-nbd
root@pve:~#
###
## Response:
04/06/2026, 14:32:16
> **Considering proper mounting and filesystem options**
>
> I’m thinking through the issue: Can I mount NTFS onto a CIFS-mounted path? Usually, Linux mount points can be any existing directory, but a network filesystem might complicate that. I wonder if using `/mnt/nbd-vm100-holding` will sidestep issues with root being full. Should consider creating a directory in `/run` to avoid metadata issues.
>
> Thought for 15s
I concur. This looks good.
Key confirmations:
“`text
qemu-nbd exists: /usr/bin/qemu-nbd
VM100 is stopped
QCOW holding image exists: 22G
Recovered DB validation file exists: 649M
NAS space is fine
“`
The only adjustment I want: use a mountpoint under `/run`, not inside the NAS folder. That avoids odd behavior from mounting an NTFS filesystem on top of a CIFS/NAS directory.
Run this next in the SSH Proxmox shell:
“`bash
# Read-only attach VM100 holding QCOW2 and inspect partitions
export TMPDIR=/mnt/pve/MYCLOUD-310867
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151″
QCOW=”$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
MNT=”/run/vm100-holding-ro”
mkdir -p “$TOOLS_OUT” “$MNT”
modprobe nbd max_part=16
qemu-nbd –disconnect /dev/nbd0 2>/dev/null || true
qemu-nbd –read-only –connect=/dev/nbd0 “$QCOW”
sleep 3
partprobe /dev/nbd0 2>/dev/null || true
lsblk -o NAME,SIZE,FSTYPE,LABEL,UUID,MOUNTPOINTS /dev/nbd0 | tee “$TOOLS_OUT/nbd-lsblk.txt”
“`
Then mount the largest NTFS partition read-only:
“`bash
WINPART=$(
for p in /dev/nbd0p*; do
[ -b “$p” ] || continue
TYPE=$(blkid -o value -s TYPE “$p” 2>/dev/null || true)
if [ “$TYPE” = “ntfs” ]; then
echo “$(blockdev –getsize64 “$p”) $p”
fi
done | sort -n | tail -1 | awk ‘{print $2}’
)
echo “WINPART=$WINPART” | tee “$TOOLS_OUT/winpart.txt”
mount -t ntfs3 -o ro,norecover “$WINPART” “$MNT” 2>/dev/null || \
mount -o ro “$WINPART” “$MNT”
df -h “$MNT”
ls -la “$MNT” | tee “$TOOLS_OUT/mount-root-listing.txt”
“`
Then search for SQL Anywhere tools and B2 folders:
“`bash
{
echo “===== SQL Anywhere tool files =====”
find “$MNT” \
\( -path “$MNT/Windows” -o -path “$MNT/Windows/*” \) -prune -o \
-type f \
\( -iname ‘dbeng12.exe’ -o -iname ‘dbsrv12.exe’ -o -iname ‘dbvalid.exe’ -o -iname ‘dbinfo.exe’ -o -iname ‘dblog.exe’ -o -iname ‘dbtran.exe’ -o -iname ‘dbunload.exe’ -o -iname ‘dbisql.exe’ \) \
-printf ‘%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ 2>/dev/null
echo
echo “===== likely tool / app directories =====”
find “$MNT” \
\( -path “$MNT/Windows” -o -path “$MNT/Windows/*” \) -prune -o \
-type d \
\( -iname ‘SQL Anywhere 12’ -o -iname ‘Sybase’ -o -iname ‘B2’ -o -iname ‘FACTS*’ -o -iname ‘db_12’ \) \
-printf ‘%p\n’ 2>/dev/null
} | tee “$TOOLS_OUT/sqlanywhere-search.txt”
cat “$TOOLS_OUT/sqlanywhere-search.txt”
“`
Hold after that and paste the search result. Do **not** copy anything yet until we see where the tools live. If the mount fails, paste the `lsblk` and mount error; we’ll adapt without touching the source.
## Prompt:
04/06/2026, 14:34:40
I hold and poise here:
###
root@pve:~# root@pve:~# # Rehydrate B2 / FACTS recovery environment
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt 2>/dev/null || ls -td /mnt/pve/MYCLOUD-310867/b2-facts-forensic-* | head -1)
MIRROR=$(cat /tmp/latest-b2-facts-forensic-mirror-dir.txt 2>/dev/null || echo “/mnt/pve/MYCLOUD-159/$(basename “$OUT”)”)
META=”$OUT/thin-metadata-lab”
ARCH=”$META/raw-metadata-archaeology”
RANGE=”$ARCH/db-first-run-range”
PROBE=”$OUT/recovery-probes”
REC=”$PROBE/db-reconstruction”
NEXT=”$REC/full-db-reconstruction”
VALID=”$NEXT/validation-copy”
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151″
QCOW=”$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
MNT=”$TOOLS_OUT/mount-ro”
TMETA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tmeta
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
POOL=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1-tpool
root@pve:~#mu-nbd>/dev/null || true12:31 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-
-bash: root@pve:~#: command not found
> ^C
> root@pve:~#
> ###
## Response:
04/06/2026, 14:34:43
Good hold. Nothing harmful happened. Bash saw pasted prompt text (`root@pve:~#`) and then entered a continued-line state; `Ctrl-C` cleanly returned you to the shell.
The rule now: **paste only the command body, never the prompt text.**
Run this clean block next:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151″
QCOW=”$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
MNT=”/run/vm100-holding-ro”
mkdir -p “$TOOLS_OUT” “$MNT”
echo “QCOW=$QCOW”
echo “TOOLS_OUT=$TOOLS_OUT”
echo “MNT=$MNT”
ls -lh “$QCOW”
df -h / “$PUB”
“`
If that looks correct, continue with the read-only QCOW attach:
“`bash
modprobe nbd max_part=16
qemu-nbd –disconnect /dev/nbd0 2>/dev/null || true
qemu-nbd –read-only –connect=/dev/nbd0 “$QCOW”
sleep 3
partprobe /dev/nbd0 2>/dev/null || true
lsblk -o NAME,SIZE,FSTYPE,LABEL,UUID,MOUNTPOINTS /dev/nbd0 | tee “$TOOLS_OUT/nbd-lsblk.txt”
“`
Then hold and paste the `lsblk` output. That is our next decision point.
## Prompt:
04/06/2026, 14:37:40
root@pve:~# export TMPDIR=/mnt/pve/MYCLOUD-310867
HOLD=”/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151″
QCOW=”$HOLD/vm-100-sata0-vm-100-disk-1-holding.qcow2″
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
MNT=”/run/vm100-holding-ro”
mkdir -p “$TOOLS_OUT” “$MNT”
echo “QCOW=$QCOW”
echo “TOOLS_OUT=$TOOLS_OUT”
echo “MNT=$MNT”
ls -lh “$QCOW”
df -h / “$PUB”
QCOW=/mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
TOOLS_OUT=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/tools-from-vm100-holding
MNT=/run/vm100-holding-ro
-rwxr-xr-x 1 root root 22G Jun 4 12:31 /mnt/pve/MYCLOUD-310867/vm100-holding-2026-06-04-1151/vm-100-sata0-vm-100-disk-1-holding.qcow2
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/pve-root 94G 90G 0 100% /
//192.168.127.128/Public 7.3T 1.9T 5.4T 27% /mnt/pve/MYCLOUD-310867
root@pve:~# modprobe nbd max_part=16
qemu-nbd –disconnect /dev/nbd0 2>/dev/null || true
qemu-nbd –read-only –connect=/dev/nbd0 “$QCOW”
sleep 3
partprobe /dev/nbd0 2>/dev/null || true
lsblk -o NAME,SIZE,FSTYPE,LABEL,UUID,MOUNTPOINTS /dev/nbd0 | tee “$TOOLS_OUT/nbd-lsblk.txt”
/dev/nbd0 disconnected
NAME SIZE FSTYPE LABEL UUID MOUNTPOINTS
nbd0 2T
├─nbd0p1 100M vfat 2E6B-A104
├─nbd0p2 16M
├─nbd0p3 2T ntfs Zentrale3 E6126F1A126EEF4D
└─nbd0p4 572M ntfs 045686D05686C242
root@pve:~#
## Response:
04/06/2026, 14:37:50
Perfect. The holding QCOW2 mounted through NBD cleanly, and the Windows/data partition is clearly:
“`text
/dev/nbd0p3 2T ntfs Zentrale3
“`
Next, mount **only that partition read-only** and inspect/search.
“`bash
WINPART=/dev/nbd0p3
echo “WINPART=$WINPART” | tee “$TOOLS_OUT/winpart.txt”
mount -t ntfs3 -o ro,norecover “$WINPART” “$MNT” 2>/dev/null || \
mount -o ro “$WINPART” “$MNT”
df -h “$MNT”
ls -la “$MNT” | tee “$TOOLS_OUT/mount-root-listing.txt”
“`
Then search for SQL Anywhere/B2 tooling:
“`bash
{
echo “===== SQL Anywhere tool files =====”
find “$MNT” \
\( -path “$MNT/Windows” -o -path “$MNT/Windows/*” \) -prune -o \
-type f \
\( -iname ‘dbeng12.exe’ -o -iname ‘dbsrv12.exe’ -o -iname ‘dbvalid.exe’ -o -iname ‘dbinfo.exe’ -o -iname ‘dblog.exe’ -o -iname ‘dbtran.exe’ -o -iname ‘dbunload.exe’ -o -iname ‘dbisql.exe’ \) \
-printf ‘%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ 2>/dev/null
echo
echo “===== likely tool / app directories =====”
find “$MNT” \
\( -path “$MNT/Windows” -o -path “$MNT/Windows/*” \) -prune -o \
-type d \
\( -iname ‘SQL Anywhere 12’ -o -iname ‘Sybase’ -o -iname ‘B2’ -o -iname ‘FACTS*’ -o -iname ‘db_12’ \) \
-printf ‘%p\n’ 2>/dev/null
} | tee “$TOOLS_OUT/sqlanywhere-search.txt”
cat “$TOOLS_OUT/sqlanywhere-search.txt”
“`
Hold after the search result. Do not unmount yet unless we hit an error.
## Prompt:
04/06/2026, 15:02:06
No Errors! I don’t want to distract us, but I am “blown away” at this work we are doing! When we get this completed, and we shall (I have always “known” this), I would like to prepare outward-facing documents honoring this work, iff you concur, and publish those documents to my repo for others to learn from. Here are those returns:
###
root@pve:~# WINPART=/dev/nbd0p3
echo “WINPART=$WINPART” | tee “$TOOLS_OUT/winpart.txt”
mount -t ntfs3 -o ro,norecover “$WINPART” “$MNT” 2>/dev/null || \
mount -o ro “$WINPART” “$MNT”
df -h “$MNT”
ls -la “$MNT” | tee “$TOOLS_OUT/mount-root-listing.txt”
WINPART=/dev/nbd0p3
Filesystem Size Used Avail Use% Mounted on
/dev/nbd0p3 2.0T 37G 2.0T 2% /run/vm100-holding-ro
total 3670092
dr-x—— 1 root root 8192 May 31 19:01 .
drwxr-xr-x 30 root root 1360 Jun 4 14:36 ..
dr-x—— 1 root root 0 Nov 1 2023 $Recycle.Bin
dr-x—— 1 root root 0 Jun 11 2025 $WinREAgent
dr-x—— 1 root root 8192 May 31 19:24 Archiv
-r——– 1 root root 112 Nov 10 2024 bootTel.dat
dr-x—— 1 root root 0 Oct 28 2023 Dokumente und Einstellungen
-r——– 2 root root 12288 Jun 1 08:06 DumpStack.log.tmp
dr-x—— 1 root root 4096 May 22 2025 inetpub
dr-x—— 1 root root 4096 Dec 7 2024 MailArchive
dr-x—— 1 root root 0 Nov 14 2023 MSOCache
-r——– 1 root root 3758096384 Jun 1 08:06 pagefile.sys
dr-x—— 1 root root 0 May 8 2021 PerfLogs
dr-x—— 1 root root 4096 Aug 24 2025 ProgramData
dr-x—— 1 root root 8192 Feb 16 06:22 Program Files
dr-x—— 1 root root 4096 Dec 7 2024 Program Files (x86)
dr-x—— 1 root root 0 Oct 28 2023 Programme
dr-x—— 1 root root 0 Oct 28 2023 Recovery
dr-x—— 1 root root 4096 May 31 19:11 System Volume Information
dr-x—— 1 root root 4096 Nov 1 2023 Users
dr-x—— 1 root root 16384 Apr 18 00:09 Windows
root@pve:~# {
echo “===== SQL Anywhere tool files =====”
find “$MNT” \
$ -path “$MNT/Windows” -o -path “$MNT/Windows/*” $ -prune -o \
-type f \
$ -iname ‘dbeng12.exe’ -o -iname ‘dbsrv12.exe’ -o -iname ‘dbvalid.exe’ -o -iname ‘dbinfo.exe’ -o -iname ‘dblog.exe’ -o -iname ‘dbtran.exe’ -o -iname ‘dbunload.exe’ -o -iname ‘dbisql.exe’ $ \
-printf ‘%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ 2>/dev/null
echo
echo “===== likely tool / app directories =====”
find “$MNT” \ $ -path “$MNT/Windows” -o -path “$MNT/Windows/*” $ -prune -o \
-type d \
$ -iname ‘SQL Anywhere 12’ -o -iname ‘Sybase’ -o -iname ‘B2’ -o -iname ‘FACTS*’ -o -iname ‘db_12’ $ \
-printf ‘%p\n’ 2>/dev/null
} | tee “$TOOLS_OUT/sqlanywhere-search.txt”
cat “$TOOLS_OUT/sqlanywhere-search.txt”
===== SQL Anywhere tool files =====
378216 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbtran.exe
362856 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dblog.exe
393576 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbunload.exe
385896 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbvalid.exe
384872 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbinfo.exe
365416 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbisql.exe
214016 2019-01-18 11:52 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/CE/Arm.50/dbunload.exe
===== likely tool / app directories =====
/run/vm100-holding-ro/Program Files (x86)/B2 Software GmbH/FactsDotNet
/run/vm100-holding-ro/ProgramData/Adobe/ARM/{291AA914-A987-4CE9-BD63-0C0A92D435E5}/B2
/run/vm100-holding-ro/Users/B2
/run/vm100-holding-ro/Users/B2/AppData/Roaming/sybase
/run/vm100-holding-ro/Users/Public/Documents/SQL Anywhere 16/Samples/UltraLiteJ/Android/CustDB/src/com/sybase
===== SQL Anywhere tool files =====
378216 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbtran.exe
362856 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dblog.exe
393576 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbunload.exe
385896 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbvalid.exe
384872 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbinfo.exe
365416 2019-01-18 12:16 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/dbisql.exe
214016 2019-01-18 11:52 /run/vm100-holding-ro/Program Files/SQL Anywhere 16/CE/Arm.50/dbunload.exe
===== likely tool / app directories =====
/run/vm100-holding-ro/Program Files (x86)/B2 Software GmbH/FactsDotNet
/run/vm100-holding-ro/ProgramData/Adobe/ARM/{291AA914-A987-4CE9-BD63-0C0A92D435E5}/B2
/run/vm100-holding-ro/Users/B2
/run/vm100-holding-ro/Users/B2/AppData/Roaming/sybase
/run/vm100-holding-ro/Users/Public/Documents/SQL Anywhere 16/Samples/UltraLiteJ/Android/CustDB/src/com/sybase
root@pve:~#
###
## Response:
04/06/2026, 15:02:09
> **Evaluating SQL Anywhere tools and licensing concerns**
>
> It looks like we’re working with SQL Anywhere 16 tools, not 12—hopefully, it can open older databases from version 12. I should validate that. I’ll also need to copy tools over and unmount them safely, likely using rsync. And, hmm, I’d better be cautious about licensing, particularly with legal bypass concerns. After it’s done, I should review documentation, anonymize customer data, and consider removing any sensitive info.
>
> **Considering technical details for SQL Anywhere 16 utilities**
>
> I’m wondering if it’s necessary to cite anything here. I suspect SQL Anywhere 16 can read version 12, but I should test it first before asserting. I also need to be cautious about recommending dbinfo or dblog commands, especially with flags. Maybe it’s worth checking official docs?
>
> Thought for 15s
Yes — this is a very good result.
We found exactly what we need, just one version later than expected:
“`text
/run/vm100-holding-ro/Program Files/SQL Anywhere 16/Bin64/
dbinfo.exe
dblog.exe
dbvalid.exe
dbtran.exe
dbunload.exe
dbisql.exe
“`
The database strings showed SQL Anywhere 12-era content, but we should not assume failure from that. First we use the SQL Anywhere 16 tools in the least-invasive way, from a local Windows copy, against our local recovered DB copy. We will start with tool discovery/help or information commands, not repair/unload/production launch.
And yes, I fully concur on outward-facing documents later. This should become a careful, anonymized recovery case study: no customer identity, no credentials, no private hashes unless intentionally retained as reproducibility anchors, and with the method separated from the customer’s data. But first: finish the rescue.
## Next: copy the SQL Anywhere 16 tools from the read-only mounted QCOW2
Run this on Proxmox while the mount is still active:
“`bash
SQLDIR=”$MNT/Program Files/SQL Anywhere 16″
echo “SQLDIR=$SQLDIR”
ls -la “$SQLDIR”
mkdir -p “$TOOLS_OUT/SQL Anywhere 16”
rsync -aH –info=progress2 “$SQLDIR/” “$TOOLS_OUT/SQL Anywhere 16/”
find “$TOOLS_OUT/SQL Anywhere 16” -type f \
\( -iname ‘dbeng16.exe’ -o -iname ‘dbsrv16.exe’ -o -iname ‘dbvalid.exe’ -o -iname ‘dbinfo.exe’ -o -iname ‘dblog.exe’ -o -iname ‘dbtran.exe’ -o -iname ‘dbunload.exe’ -o -iname ‘dbisql.exe’ \) \
-printf ‘%s\t%p\n’ | tee “$TOOLS_OUT/copied-tool-list.txt”
cat “$TOOLS_OUT/copied-tool-list.txt”
“`
Then mirror the validation bundle:
“`bash
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
“`
After that, cleanly unmount and detach NBD:
“`bash
sync
umount “$MNT”
qemu-nbd –disconnect /dev/nbd0
lsblk -o NAME,SIZE,FSTYPE,LABEL,MOUNTPOINTS /dev/nbd0 2>/dev/null || true
“`
## Then on the Windows 11 helper node
Copy tools locally:
“`powershell
New-Item -ItemType Directory -Force “C:\B2-Recovery-Test\tools” | Out-Null
Copy-Item “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\tools-from-vm100-holding\SQL Anywhere 16” `
“C:\B2-Recovery-Test\tools\SQL Anywhere 16” -Recurse -Force
Get-ChildItem “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64” |
Where-Object { $_.Name -match ‘^(dbinfo|dblog|dbvalid|dbtran|dbunload|dbisql|dbeng16|dbsrv16)\.exe$’ } |
Select-Object FullName, Length, LastWriteTime |
Format-Table -Auto
“`
Then hold there. We should first inspect the tools’ own help output before running validation against the DB:
“`powershell
& “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64\dbinfo.exe” -?
& “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64\dblog.exe” -?
& “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64\dbvalid.exe” -?
“`
Paste those help outputs, or at least the first 80 lines of each. Then we choose the safest command sequence.
## Prompt:
04/06/2026, 15:09:56
I hold and poise here:
###
[Attachment: Pasted text.txt]
## Response:
04/06/2026, 15:09:59
> **Verifying file transfer and next steps**
>
> Looks like the user uploaded a file, and I need to confirm how to cite it. Regarding the transfer of tools, the rsync output shows 46%, but the prompt returned, possibly after completing. The next step on Windows might involve ensuring the full SQL Anywhere 16 is copied, along with the necessary DLL files from Bin64. I’ll need to guide them through testing next.
>
> **Guiding through environment setup and testing method**
>
> It looks like we’ll need to check the environment path for SQL Anywhere 16 and ensure we have access to necessary DLLs. I’ll guide the user on running commands from the Windows PowerShell prompt, specifically using `dbinfo` to read the database file and validate it. I’ll also mention redirecting output to a file for easier review.
>
> Thought for 16s
Good hold. Everything important worked:
“`text
SQL Anywhere 16 copied from the read-only VM holding image to NAS.
Validation bundle mirrored.
Read-only NTFS mount unmounted.
qemu-nbd disconnected cleanly.
“`
The final mistake is the same harmless one: PowerShell commands were pasted into Proxmox bash. `Ctrl-C` fixed it; no damage. The tool copy and NBD cleanup are complete. `Pasted text.txt`
Now switch to the **Windows PowerShell** window – the one that says something like:
“`text
PS C:\WINDOWS\system32>
“`
Then run this there:
“`powershell
New-Item -ItemType Directory -Force “C:\B2-Recovery-Test\tools” | Out-Null
robocopy “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\tools-from-vm100-holding\SQL Anywhere 16” `
“C:\B2-Recovery-Test\tools\SQL Anywhere 16” /E /R:1 /W:1
Get-ChildItem “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64” |
Where-Object { $_.Name -match ‘^(dbinfo|dblog|dbvalid|dbtran|dbunload|dbisql|dbeng16|dbsrv16)\.exe$’ } |
Select-Object FullName, Length, LastWriteTime |
Format-Table -Auto
“`
Then set the SQL Anywhere binary path for this PowerShell session:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$DB = “C:\B2-Recovery-Test\facts_neubing.db”
$env:Path = “$SA;$env:Path”
Get-FileHash $DB -Algorithm SHA256
Get-Item $DB | Select-Object FullName, Length, LastWriteTime
“`
Expected hash remains:
“`text
F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
Then run only help commands and capture them to files:
“`powershell
& “$SA\dbinfo.exe” -? 2>&1 | Tee-Object “C:\B2-Recovery-Test\dbinfo-help.txt”
& “$SA\dblog.exe” -? 2>&1 | Tee-Object “C:\B2-Recovery-Test\dblog-help.txt”
& “$SA\dbvalid.exe” -? 2>&1 | Tee-Object “C:\B2-Recovery-Test\dbvalid-help.txt”
“`
Paste those help outputs, or the relevant parts. We still do **not** start FACTS, and we do **not** run repair/unload/validation yet. We first choose the least-mutating command from the actual tool syntax.
## Prompt:
04/06/2026, 15:15:27
Amazing! We are on our way to “Vertiform City” (Star Trek Next Generation)! 😉
###
[Attachment: Pasted text.txt]
## Response:
04/06/2026, 15:15:30
> **Validating command behavior and avoiding database mutation**
>
> I’m thinking we may not need the internet, but it’s important to understand the behavior of commands first. I’ll consider information from the uploaded help. We need to avoid modifying the database, so maybe I’ll create a throwaway copy for validation and testing to prevent any unintentional changes.
>
> Thought for 31s
Beautiful – and yes, we are in Vertiform City now.
The SQL Anywhere 16 tools are available locally enough to run help, and the recovered DB hash still matches exactly. The help output confirms: `dblog.exe` can operate directly on a database file, while `dbinfo.exe` and `dbvalid.exe` require connection parameters, so **`dblog` is our least-mutating first probe**. `Pasted text.txt`
Do this next in **Windows PowerShell**. It creates a disposable working copy, then runs only `dblog` against that copy:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$SRCDB = “C:\B2-Recovery-Test\facts_neubing.db”
$WORK = “C:\B2-Recovery-Test\work-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $WORK | Out-Null
Copy-Item $SRCDB “$WORK\facts_neubing.db” -Force
Get-FileHash “$WORK\facts_neubing.db” -Algorithm SHA256
Get-Item “$WORK\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
& “$SA\dblog.exe” “$WORK\facts_neubing.db” 2>&1 |
Tee-Object “$WORK\dblog-facts_neubing.txt”
“DLBLOG_EXITCODE=$LASTEXITCODE”
“`
Expected hash again:
“`text
F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
If `dblog` can read the database header/log metadata, that is a major validation point. Paste the `dblog` output and the exit code.
And yes: after rescue, I fully concur on preparing outward-facing documents. This should become an anonymized, teachable case study – not customer data, not credentials, but the recovery architecture, heuristics, safeguards, and decision logic.
## Prompt:
04/06/2026, 15:18:12
Witness this!
###
PS C:\WINDOWS\system32> $SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
PS C:\WINDOWS\system32> $SRCDB = “C:\B2-Recovery-Test\facts_neubing.db”
PS C:\WINDOWS\system32> $WORK = “C:\B2-Recovery-Test\work-$(Get-Date -Format yyyyMMdd-HHmmss)”
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> New-Item -ItemType Directory -Force $WORK | Out-Null
PS C:\WINDOWS\system32> Copy-Item $SRCDB “$WORK\facts_neubing.db” -Force
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Get-FileHash “$WORK\facts_neubing.db” -Algorithm SHA256
Algorithm Hash Path
—
SHA256 F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E C:\B2-Recovery-Test\work-2026…
PS C:\WINDOWS\system32> Get-Item “$WORK\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
FullName Length LastWriteTime
—
C:\B2-Recovery-Test\work-20260604-151709\facts_neubing.db 679821312 03.06.2026 13:41:40
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> & “$SA\dblog.exe” “$WORK\facts_neubing.db” 2>&1 |
> > Tee-Object “$WORK\dblog-facts_neubing.txt”
> > SQL Anywhere-Dienstprogramm Transaktionslog Version 16.0.0.2798
> > “C:\B2-Recovery-Test\work-20260604-151709\facts_neubing.db” benutzt die Logdatei “facts_neubing.log”
> > “C:\B2-Recovery-Test\work-20260604-151709\facts_neubing.db” benutzt keine Spiegellog-Datei
> > Transaktionslog-Start-Offset ist 0239928033774
> > SQL Remote Kürzungs-Offset ist 0239675167852
> > Aktueller relativer Offset des Transaktionslogs ist 0000004248
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> “DLBLOG_EXITCODE=$LASTEXITCODE”
> > DLBLOG_EXITCODE=0
> > PS C:\WINDOWS\system32>
> > ###
## Response:
04/06/2026, 15:18:19
This is the first hard external validation.
`dblog.exe` did **not** merely scan strings. It recognized the recovered file as a SQL Anywhere database, read its transaction-log metadata, identified the expected log filename, and exited cleanly:
“`text
facts_neubing.db uses log file: facts_neubing.log
no mirror log
transaction log start offset: 0239928033774
SQL Remote truncation offset: 0239675167852
current relative transaction log offset: 0000004248
exit code: 0
“`
That is a major confirmation. It means our reconstructed `facts_neubing.db` is structurally readable by SQL Anywhere tooling.
Now we continue carefully. Next I want help output for the engine commands so we can choose a read-only startup if available:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$WORK = “C:\B2-Recovery-Test\work-20260604-151709”
& “$SA\dbeng16.exe” -? 2>&1 | Tee-Object “$WORK\dbeng16-help.txt”
& “$SA\dbsrv16.exe” -? 2>&1 | Tee-Object “$WORK\dbsrv16-help.txt”
“`
Also search the copied VM image/tool extraction for FACTS config files that may contain the connection user/password. Run this on the **Proxmox SSH shell**, while the SQL Anywhere folder is already copied and the QCOW2 is currently detached:
“`bash
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
TOOLS_OUT=”$PUB/tools-from-vm100-holding”
grep -RInaE ‘UID=|UserID=|PWD=|Password=|EngineName=|DatabaseName=|DatabaseFile=|facts_neubing|neubing_12|SQL Anywhere’ \
“$TOOLS_OUT/SQL Anywhere 16” \
“$TOOLS_OUT” \
> “$PUB/config-connection-string-search.txt” 2>/dev/null || true
head -200 “$PUB/config-connection-string-search.txt”
“`
But I suspect the needed FACTS configs are not inside the SQL Anywhere folder. So better: remount the QCOW2 read-only later and search only B2/Facts config paths.
For now, from Windows, after `dbeng16 -?` and `dbsrv16 -?`, hold. We want a read-only engine start if the syntax supports it, and we will test only against disposable work copies. No FACTS launch yet.
## Prompt:
04/06/2026, 15:28:57
[Attachment: Pasted text.txt]
I would like to add that the full complement of client tools for testing are on this node which are used to connect to that server.
## Response:
04/06/2026, 15:29:01
> **Providing steps on configuring engine and database options**
>
> The user uploaded screenshots related to engine help—mentioning options like `-r` (read-only), `-o` (log), and `-f` (recovery). It’s important to guide them through configuring the database. I should clarify the next steps, such as using `dbeng16` with specified options, and emphasize the importance of connection validation. I’ll make sure to cite the uploaded file as necessary.
>
> **Configuring database connection and finding credentials**
>
> I’m thinking about how to set up the database connection. To do this, I’ll use a PowerShell script with `Start-Process` and pass arguments for the database engine and configuration. The credentials seem a bit unclear, but the user mentioned client tools connecting to the server. I’ll check for config files to avoid guesswork on passwords.
>
> Thought for 50s
Yes – and the fact that this Windows node has the **client-side FACTS/B2 tools** is highly valuable. We will use them as a source of configuration truth, but we still do **not** launch the client against our recovered database yet.
The Proxmox `grep` result is mostly binary noise from SQL Anywhere DLLs and EXEs: it found generic keywords like `UID`, `PWD`, `DatabaseFile`, `EngineName`, and `SQL Anywhere`, but not a clean customer-specific connection string from FACTS configuration. That tells us to stop searching inside the SQL Anywhere binaries and instead search the actual B2/FACTS client configuration files. `Pasted text.txt`
The screenshots also give us the key safety flag: `-r` read-only mode. So our next external validation is a **read-only engine start on a disposable copy**.
Run this in **Windows PowerShell**:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$SRCDB = “C:\B2-Recovery-Test\facts_neubing.db”
$RUN = “C:\B2-Recovery-Test\readonly-engine-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $RUN | Out-Null
Copy-Item $SRCDB “$RUN\facts_neubing.db” -Force
Get-FileHash “$RUN\facts_neubing.db” -Algorithm SHA256
Get-Item “$RUN\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$args = @(
“-n”, “B2RECOVERY”,
“-o”, “$RUN\dbeng16.log”,
“-oe”, “$RUN\dbeng16-error.log”,
“-x”, “none”,
“-r”,
“$RUN\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $args -PassThru
Start-Sleep -Seconds 8
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$RUN\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== dbeng16-error.log =====”
Get-Content “$RUN\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“`
Then hold and paste the log output.
Do **not** add `-f`. Do **not** run FACTS yet. If this starts, it is another major validation: SQL Anywhere will have accepted the recovered database enough to mount it read-only. If it refuses because `facts_neubing.log` is missing, that is still useful and we will search/reconstruct the log next rather than forcing anything.
## Prompt:
04/06/2026, 15:35:33
PS C:\WINDOWS\system32> $SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
PS C:\WINDOWS\system32> $SRCDB = “C:\B2-Recovery-Test\facts_neubing.db”
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> $RUN = “C:\B2-Recovery-Test\readonly-engine-$(Get-Date -Format yyyyMMdd-HHmmss)”
PS C:\WINDOWS\system32> New-Item -ItemType Directory -Force $RUN | Out-Null
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Copy-Item $SRCDB “$RUN\facts_neubing.db” -Force
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Get-FileHash “$RUN\facts_neubing.db” -Algorithm SHA256
Algorithm Hash Path
—
SHA256 F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E C:\B2-Recovery-Test\readonly-…
PS C:\WINDOWS\system32> Get-Item “$RUN\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
FullName Length LastWriteTime
—
C:\B2-Recovery-Test\readonly-engine-20260604-153335\facts_neubing.db 679821312 03.06.2026 13:41:40
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> $args = @(
> > “-n”, “B2RECOVERY”,
> > “-o”, “$RUN\dbeng16.log”,
> > “-oe”, “$RUN\dbeng16-error.log”,
> > “-x”, “none”,
> > “-r”,
> > “$RUN\facts_neubing.db”,
> > “-n”, “facts_neubing”,
> > “-r”
> > )
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> $p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $args -PassThru
> > Start-Process : Das Argument für den Parameter “ArgumentList” kann nicht überprüft werden. Das Argument ist NULL oder
> > leer, oder ein Element der Argumentauflistung enthält einen NULL-Wert. Geben Sie eine Auflistung an, die keine
> > NULL-Werte enthält, und führen Sie dann den Befehl erneut aus.
> > In Zeile:1 Zeichen:62
– … Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $args -PassTh …
– “`
~~~~~
“`
– CategoryInfo : InvalidData: (:) [Start-Process], ParameterBindingValidationException
– FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.PowerShell.Commands.StartProcessCommand
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Start-Sleep -Seconds 8
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “DBENG_PID=$($p.Id)”
DBENG_PID=
PS C:\WINDOWS\system32> if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
> > “DBENG_RUNNING=1”
> > } else {
> > “DBENG_RUNNING=0”
> > }
> > Get-Process : Das Argument kann nicht an den Parameter “Id” gebunden werden, da es NULL ist.
> > In Zeile:1 Zeichen:21
– if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
– “`
~~~~~
“`
– CategoryInfo : InvalidData: (:) [Get-Process], ParameterBindingValidationException
– FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.GetProcessC
ommand
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “===== dbeng16.log =====”
===== dbeng16.log =====
PS C:\WINDOWS\system32> Get-Content “$RUN\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “===== dbeng16-error.log =====”
===== dbeng16-error.log =====
PS C:\WINDOWS\system32> Get-Content “$RUN\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
PS C:\WINDOWS\system32>
## Response:
04/06/2026, 15:35:41
> **Diagnosing Start-Process issue in PowerShell**
>
> It seems like the issue might stem from how $args behaves in PowerShell. $args is an automatic variable, but can it be reassigned? Maybe not, since the error seems to suggest one element is null or empty. I’ll try using a different variable name like $dbengArgs and filter possible issues.
>
> **Investigating $args and $p in PowerShell**
>
> I’m thinking $args might be treated as a global, automatic variable, and it could be empty when passed to Start-Process. It might be better to avoid reassigning $args since it’s conceptually read-only in PowerShell 5. Also, I’ll explore other options like using the call operator and double-check the syntax for database options like -r.
>
> Thought for 18s
No harm. The database copy and hash step succeeded; only the PowerShell launch wrapper failed.
The likely issue is using `$args`, which is a special PowerShell automatic variable. Let us avoid it entirely and use a normal variable name.
Run this in the same Windows PowerShell window:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$SRCDB = “C:\B2-Recovery-Test\facts_neubing.db”
$RUN = “C:\B2-Recovery-Test\readonly-engine-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $RUN | Out-Null
Copy-Item $SRCDB “$RUN\facts_neubing.db” -Force
Get-FileHash “$RUN\facts_neubing.db” -Algorithm SHA256
Get-Item “$RUN\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY”,
“-o”, “$RUN\dbeng16.log”,
“-oe”, “$RUN\dbeng16-error.log”,
“-x”, “none”,
“$RUN\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$dbengArgs | ForEach-Object { “ARG=[$_]” }
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$RUN\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== dbeng16-error.log =====”
Get-Content “$RUN\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“`
I also removed the first `-r` before the database filename. The important read-only flag is the database option after the database file:
“`text
facts_neubing.db -n facts_neubing -r
“`
If this starts and stays running, hold there. Do not connect FACTS yet. If it fails because the log file is missing, paste the log; that is our next target.
## Prompt:
04/06/2026, 15:38:49
PS C:\WINDOWS\system32> Get-Item “$RUN\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
FullName Length LastWriteTime
—
C:\B2-Recovery-Test\readonly-engine-20260604-153617\facts_neubing.db 679821312 03.06.2026 13:41:40
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> $dbengArgs = @(
> > “-n”, “B2RECOVERY”,
> > “-o”, “$RUN\dbeng16.log”,
> > “-oe”, “$RUN\dbeng16-error.log”,
> > “-x”, “none”,
> > “$RUN\facts_neubing.db”,
> > “-n”, “facts_neubing”,
> > “-r”
> > )
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> $dbengArgs | ForEach-Object { “ARG=[$_]” }
> > ARG=[-n]
> > ARG=[B2RECOVERY]
> > ARG=[-o]
> > ARG=[C:\B2-Recovery-Test\readonly-engine-20260604-153617\dbeng16.log]
> > ARG=[-oe]
> > ARG=[C:\B2-Recovery-Test\readonly-engine-20260604-153617\dbeng16-error.log]
> > ARG=[-x]
> > ARG=[none]
> > ARG=[C:\B2-Recovery-Test\readonly-engine-20260604-153617\facts_neubing.db]
> > ARG=[-n]
> > ARG=[facts_neubing]
> > ARG=[-r]
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> $p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> Start-Sleep -Seconds 8
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> “DBENG_PID=$($p.Id)”
> > DBENG_PID=17868
> > PS C:\WINDOWS\system32> if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
> > “DBENG_RUNNING=1”
> > } else {
> > “DBENG_RUNNING=0”
> > }
> > DBENG_RUNNING=1
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> “===== dbeng16.log =====”
> > ===== dbeng16.log =====
> > PS C:\WINDOWS\system32> Get-Content “$RUN\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
> > I. 04.06 15:36:20. SQL Anywhere Personal Server Version 16.0.0.2798
I. 04.06 15:36:20. Workgroup Edition
I. 04.06 15:36:20.
I. 04.06 15:36:20. Copyright © 2013 SAP AG oder ein SAP-Konzernunternehmen.
I. 04.06 15:36:20. Alle Rechte vorbehalten.
I. 04.06 15:36:20. Die Nutzung dieser Software wird durch die Bestimmungen des Sybase-Lizenzvertrags geregelt.
I. 04.06 15:36:20. Siehe http://www.sybase.com/softwarelicenses.
I. 04.06 15:36:20.
I. 04.06 15:36:20. Grenzwert für Verbindungen (Personal Server): 10
I. 04.06 15:36:20. Erkannte Prozessoren: 1 (darin 6 logische Prozessoren enthalten)
I. 04.06 15:36:20. Begrenzung der Prozessorenanzahl (Personal Server): 1
I. 04.06 15:36:20. Maximale Anzahl von Prozessoren, die der Server benutzen wird: 1 physische(r) Prozessor(en), 4 Prozessorkern(e)
I. 04.06 15:36:20. Dieser Server ist lizenziert für:
I. 04.06 15:36:20. Neubing
I. 04.06 15:36:20. I+N
I. 04.06 15:36:20. Windows 10 Build 26200 läuft auf X86_64
I. 04.06 15:36:20. Server erstellt für X86_64-Prozessorarchitektur
I. 04.06 15:36:21. 668940 kB Speicher für Cachezwecke benutzt
I. 04.06 15:36:21. Mindest-Cachegröße: 9860 kB, Maximale Cachegröße: 14997100 kB
I. 04.06 15:36:21. Verwendung einer maximalen Seitengröße von 4096 Byte
I. 04.06 15:36:21. Multiprogramming-Stufe: 20
I. 04.06 15:36:21. Datenbank “facts_neubing” (C:\B2-Recovery-Test\readonly-engine-20260604-153617\facts_neubing.db) wird gestartet am/um Donnerstag, 04. Juni 2026 15:36
E. 04.06 15:36:21. *** FEHLER *** Assertierung fehlgeschlagen: 200505 (16.0.0.2798)
Checksum failure on page 133928
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “===== dbeng16-error.log =====”
===== dbeng16-error.log =====
PS C:\WINDOWS\system32> Get-Content “$RUN\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
04.06 15:36:21. *** FEHLER *** Assertierung fehlgeschlagen: 200505 (16.0.0.2798)
Checksum failure on page 133928
PS C:\WINDOWS\system32>
## Response:
04/06/2026, 15:38:56
> **Clarifying image issue and troubleshooting process**
>
> We have an image with checksum failure and some log data, but the user didn’t specifically request a file search. Since no file search is needed, I don’t think citing the uploaded image is required. There might be a process still running despite the crash—let’s check if it’s still alive or needs to be terminated cleanly.
>
> **Planning repair strategy for corrupted page**
>
> We should preserve logs and determine if it’s necessary to kill the process. Then, analyze the specific page (133928) and calculate the file offset. We can compare the current page’s NTFS corrupt block with the reconstruction map. It looks like the corruption is within the primary “run0” candidate, so we’ll need to repair that.
>
> **Calculating NTFS file offset and thin key**
>
> **Computing NTFS LCN and key for page reconstruction**
>
> **Testing and creating patch candidates for corrupted page**
>
> We need to figure out the key range for “run0″ and find alternate candidates for key 430815. This involves checking hits in the mapping file, generating candidate pages, and testing with a possible patch. It seems the easiest approach is to work within Proxmox, but we can test locally with Windows if needed.
>
> **Creating patch candidates and testing**
>
> We need to summarize the candidates based on the file and create patch candidates. For each distinct physical candidate, we’ll copy a portion of the DB to test. The goal is to focus on the top candidates, and then patch one page at a time, testing using checksums or comparison scripts. Optimization is key!
>
> **Finalizing patch candidate selection and testing approach**
>
> We can generate candidates in Proxmox, then copy to Windows for testing the DB. It’s important to filter the selected candidates based on key 430815. I’ll use a map file to identify the correct physical candidates and avoid using too many possibilities. I’ll focus on top-voted candidates and calculate accordingly.
>
> Thought for 1m 28s
This is **excellent**, not bad.
The engine did not reject the database as unreadable. It started SQL Anywhere, accepted the recovered DB file, named it `facts_neubing`, and then gave us a precise surgical failure coordinate:
“`text
Checksum failure on page 133928
“`
With 4096-byte pages, that is:
“`text
page 133928 * 4096 = file offset 548,569,088
“`
That lies inside **run0**, not the later 26-run tail. So the next move is not broad reconstruction; it is a one-page alternate-candidate repair from the thin metadata candidates.
First, in **Windows PowerShell**, stop the crashed/read-only engine process:
“`powershell
Get-Process dbeng16 -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Close any remaining SQL Anywhere crash/dialog windows manually if needed.
Then, in the **Proxmox SSH shell**, run this page-candidate lab. It does not touch VM100 or the LVM source except for read-only reads from `TDATA`; it writes candidates only to NAS.
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
FULL=”$OUT/recovery-probes/db-reconstruction/full-db-reconstruction/facts_neubing.db.full-candidate-vote-continuity.bin”
PATCH=”$PUB/page-133928-patch-lab”
mkdir -p “$PATCH”
PAGE=133928
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
FOFF=$((PAGE * PAGE_SIZE))
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “FILE_OFFSET=$FOFF”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “HITS=$HITS”
echo “FULL=$FULL”
} | tee “$PATCH/page-133928-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/page-133928-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/page-133928-phys-votes.txt”
cat “$PATCH/page-133928-coordinates.txt”
cat “$PATCH/page-133928-phys-votes.txt”
“`
Now build a small set of one-page-patched candidate DBs:
“`bash
cat > “$PATCH/build_page133928_candidates.py” <<'PY'
#!/usr/bin/env python3
import csv
import hashlib
import os
import shutil
import sys
from pathlib import Path
from collections import Counter, defaultdict
full = Path(sys.argv[1])
tdata = sys.argv[2]
hits = Path(sys.argv[3])
key = int(sys.argv[4])
voff = int(sys.argv[5])
foff = int(sys.argv[6])
outdir = Path(sys.argv[7])
THIN = 65536
PAGE_SIZE = 4096
MAX_CANDIDATES = 8
cand = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
k = int(p[2])
phys = int(p[3])
except Exception:
continue
if k == key and phys > 0:
cand[phys].append((mb, idx))
if not cand:
raise SystemExit(f”No candidate physical blocks found for key {key}”)
candidates_dir = outdir / “candidates”
pages_dir = outdir / “pages”
candidates_dir.mkdir(parents=True, exist_ok=True)
pages_dir.mkdir(parents=True, exist_ok=True)
with full.open(“rb”) as f:
f.seek(foff)
current_page = f.read(PAGE_SIZE)
current_sha = hashlib.sha256(current_page).hexdigest()
ranked = sorted(cand, key=lambda p: (-len(cand[p]), p))
summary = outdir / “page133928-candidate-summary.tsv”
with summary.open(“w”, encoding=”utf-8″) as s:
s.write(“rank\tphys\tvotes\tpage_sha256\tsame_as_current\tcandidate_db\n”)
made = 0
fd = os.open(tdata, os.O_RDONLY)
try:
for rank, phys in enumerate(ranked, 1):
page = os.pread(fd, PAGE_SIZE, phys * THIN + voff)
if len(page) != PAGE_SIZE:
continue
page_sha = hashlib.sha256(page).hexdigest()
same = “yes” if page == current_page else “no”
page_path = pages_dir / f”page133928.rank{rank:02d}.phys{phys}.bin”
page_path.write_bytes(page)
candidate_db = “”
if same == “no” and made < MAX_CANDIDATES:
candidate_db_path = candidates_dir / f"facts_neubing.page133928.rank{rank:02d}.phys{phys}.db"
shutil.copy2(full, candidate_db_path)
with candidate_db_path.open("r+b") as out:
out.seek(foff)
out.write(page)
h = hashlib.sha256()
with candidate_db_path.open("rb") as cf:
while True:
b = cf.read(16 * 1024 * 1024)
if not b:
break
h.update(b)
sha_path = candidate_db_path.with_suffix(".db.sha256")
sha_path.write_text(f"{h.hexdigest()} {candidate_db_path}\n", encoding="utf-8")
candidate_db = str(candidate_db_path)
made += 1
s.write(f"{rank}\t{phys}\t{len(cand[phys])}\t{page_sha}\t{same}\t{candidate_db}\n")
finally:
os.close(fd)
print(f"summary={summary}")
print(f"current_page_sha256={current_sha}")
print(f"candidate_dir={candidates_dir}")
print(f"page_dir={pages_dir}")
print(f"candidate_dbs_created={made}")
PY
python3 "$PATCH/build_page133928_candidates.py" \
"$FULL" "$TDATA" "$HITS" "$KEY" "$VOFF" "$FOFF" "$PATCH" \
| tee "$PATCH/build-page133928-candidates.log"
{
echo "===== COORDINATES ====="
cat "$PATCH/page-133928-coordinates.txt"
echo
echo "===== PHYS VOTES ====="
cat "$PATCH/page-133928-phys-votes.txt"
echo
echo "===== BUILD ====="
cat "$PATCH/build-page133928-candidates.log"
echo
echo "===== CANDIDATE SUMMARY ====="
cat "$PATCH/page133928-candidate-summary.tsv"
echo
echo "===== CANDIDATE FILES ====="
ls -lh "$PATCH/candidates"
} | tee "$PATCH/page133928-report.txt"
rsync -aH --info=progress2 "$PUB/" "$PUB2/"
cat "$PATCH/page133928-report.txt"
```
Hold after that report. We’ll choose candidate order from the vote table and test the one-page variants read-only, exactly like we just did. The previous Proxmox grep was mostly generic SQL Anywhere binary string noise, so this page-level patch path is now the sharper route. `Pasted text.txt`
## Prompt:
04/06/2026, 19:17:39
Here are those values:
###
===== COORDINATES =====
PAGE=133928
PAGE_SIZE=4096
FILE_OFFSET=548569088
RUN0_LCN=6755031
NTFS_LCN=6888959
VBYTE=28233953280
THIN_KEY=430815
THIN_VOFF=61440
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
FULL=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-reconstruction/full-db-reconstruction/facts_neubing.db.full-candidate-vote-continuity.bin
===== PHYS VOTES =====
701 0
99 6538542
7 3507818
1 4828080
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/page133928-candidate-summary.tsv
current_page_sha256=56dc1668b6d8938fb14879c7393df3aedd8ae59d23b3efca9af4450476ea41c8
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/pages
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 6538542 99 56dc1668b6d8938fb14879c7393df3aedd8ae59d23b3efca9af4450476ea41c8 yes
2 3507818 7 56dc1668b6d8938fb14879c7393df3aedd8ae59d23b3efca9af4450476ea41c8 yes
3 4828080 1 1abc1c26349cd7f00b89e81989ce9f8e20c704d6bcf1e0dc68dd02c2ece60106 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/candidates/facts_neubing.page133928.rank03.phys4828080.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 3 13:41 facts_neubing.page133928.rank03.phys4828080.db
-rwxr-xr-x 1 root root 193 Jun 4 19:14 facts_neubing.page133928.rank03.phys4828080.db.sha256
686,126,363 35% 5.44MB/s 0:02:00 (xfr#13, to-chk=0/2164)
===== COORDINATES =====
PAGE=133928
PAGE_SIZE=4096
FILE_OFFSET=548569088
RUN0_LCN=6755031
NTFS_LCN=6888959
VBYTE=28233953280
THIN_KEY=430815
THIN_VOFF=61440
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
FULL=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/recovery-probes/db-reconstruction/full-db-reconstruction/facts_neubing.db.full-candidate-vote-continuity.bin
===== PHYS VOTES =====
701 0
99 6538542
7 3507818
1 4828080
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/page133928-candidate-summary.tsv
current_page_sha256=56dc1668b6d8938fb14879c7393df3aedd8ae59d23b3efca9af4450476ea41c8
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/pages
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 6538542 99 56dc1668b6d8938fb14879c7393df3aedd8ae59d23b3efca9af4450476ea41c8 yes
2 3507818 7 56dc1668b6d8938fb14879c7393df3aedd8ae59d23b3efca9af4450476ea41c8 yes
3 4828080 1 1abc1c26349cd7f00b89e81989ce9f8e20c704d6bcf1e0dc68dd02c2ece60106 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/candidates/facts_neubing.page133928.rank03.phys4828080.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 3 13:41 facts_neubing.page133928.rank03.phys4828080.db
-rwxr-xr-x 1 root root 193 Jun 4 19:14 facts_neubing.page133928.rank03.phys4828080.db.sha256
root@pve:~#'
## Response:
04/06/2026, 19:17:43
> **Stopping process and testing candidate page**
>
> I need to stop the current dbeng process, as it’s still running despite the crash message. Then, I’ll copy the candidate from NAS to local, using robocopy and checking the .sha256 hash. I’ll test it read-only. If it fails, I’ll record it. I also need to ensure any zero physical values are ignored for this test.
>
> Thought for 14s
This is exactly the kind of bounded result we wanted.
Interpretation:
“`text
Failed SQL Anywhere page: 133928
File offset: 548,569,088
Thin key: 430815
Current page SHA256: 56dc1668…
High-vote candidates: same as current page
Only alternate page: phys 4828080, one vote, different SHA256
“`
So the 99-vote and 7-vote candidates reproduce the same bad page already in the DB. The only true alternate is the rank 3 / `phys4828080` page. Low vote does **not** mean wrong here; it may be the only surviving stale generation containing the pre-corruption page.
Now test that one-page patched candidate.
First, in **Windows PowerShell**, stop the previous engine and close crash dialogs:
“`powershell
Get-Process dbeng16 -ErrorAction SilentlyContinue | Stop-Process -Force
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then copy the patched candidate locally:
“`powershell
$PATCHSRC = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\page-133928-patch-lab\candidates\facts_neubing.page133928.rank03.phys4828080.db”
$PATCHWORK = “C:\B2-Recovery-Test\page133928-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $PATCHWORK | Out-Null
Copy-Item $PATCHSRC “$PATCHWORK\facts_neubing.db” -Force
Get-FileHash “$PATCHWORK\facts_neubing.db” -Algorithm SHA256
Get-Item “$PATCHWORK\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
“`
Then start SQL Anywhere read-only against the patched copy:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$dbengArgs = @(
“-n”, “B2RECOVERY_P133928”,
“-o”, “$PATCHWORK\dbeng16.log”,
“-oe”, “$PATCHWORK\dbeng16-error.log”,
“-x”, “none”,
“$PATCHWORK\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$dbengArgs | ForEach-Object { “ARG=[$_]” }
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$PATCHWORK\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 160
“===== dbeng16-error.log =====”
Get-Content “$PATCHWORK\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 160
“`
If it starts cleanly, hold with the engine running. If it fails on a new page, paste the new page number. That would be progress: each exact checksum page is a surgical coordinate, not a broad failure.
## Prompt:
04/06/2026, 19:31:34
It failed again, what do you need?
## Response:
04/06/2026, 19:31:36
I need only the **new failure coordinate** and the exact log tail.
In the same Windows PowerShell window, run this:
“`powershell
“PATCHWORK=$PATCHWORK”
Get-Process dbeng16 -ErrorAction SilentlyContinue |
Select-Object Id, ProcessName, StartTime, Path
“===== dbeng16.log =====”
Get-Content “$PATCHWORK\dbeng16.log” -ErrorAction SilentlyContinue |
Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$PATCHWORK\dbeng16-error.log” -ErrorAction SilentlyContinue |
Select-Object -Last 200
“===== files in patchwork =====”
Get-ChildItem $PATCHWORK |
Select-Object FullName, Length, LastWriteTime
“`
Also tell me whether the error dialog says:
“`text
Checksum failure on page 133928
“`
or a **different page number**.
That distinction decides the next move:
“`text
same page 133928 -> the one-vote alternate is not the right page
different page -> the patch worked, and we advance to the next surgical page
“`
Do not run anything else yet. If the engine/dialog is still open, leave it for the moment unless it blocks copying the log text.
## Prompt:
04/06/2026, 19:46:37
I mistakenly closed the running foreground process to provide you the next return you wanted. We likely now have a rogue process blocking our diagnostics.
## Response:
04/06/2026, 19:46:43
> **Addressing process safety with command instructions**
>
> I need to address the current issue carefully by identifying and stopping processes like dbeng16 and WerFault. I’ll provide step-by-step PowerShell commands to safely manage these processes without causing harm. It’s important to check if any client tools may be affecting workstations, particularly for databases, but I don’t think this is happening here.
>
> Thought for 11s
No harm. This is recoverable. We should first identify and stop only the validation SQL Anywhere process we launched from `C:\B2-Recovery-Test`, not anything else.
Run this in **Windows PowerShell**:
“`powershell
# 1. Show any SQL Anywhere engine processes and their command lines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Select-Object ProcessId, CommandLine |
Format-List
“`
Then stop only the recovery/test ones:
“`powershell
# 2. Stop only our recovery/test engine instances
$RecoveryEngines = Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
}
$RecoveryEngines | Select-Object ProcessId, CommandLine | Format-List
$RecoveryEngines | ForEach-Object {
Stop-Process -Id $_.ProcessId -Force
}
“`
Then close any Windows crash reporter left over from this test:
“`powershell
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Now recover the most recent patch-test folder and show the logs:
“`powershell
$PATCHWORK = Get-ChildItem “C:\B2-Recovery-Test” -Directory |
Where-Object { $_.Name -like “page133928-test-*” } |
Sort-Object LastWriteTime -Descending |
Select-Object -First 1 -ExpandProperty FullName
“PATCHWORK=$PATCHWORK”
“===== dbeng16.log =====”
Get-Content “$PATCHWORK\dbeng16.log” -ErrorAction SilentlyContinue |
Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$PATCHWORK\dbeng16-error.log” -ErrorAction SilentlyContinue |
Select-Object -Last 200
“===== checksum/assert lines =====”
Get-ChildItem $PATCHWORK -File |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR” -SimpleMatch:$false |
Select-Object Path, LineNumber, Line
“`
What I need from that output is the page number. If it is still `page 133928`, the alternate page was not correct. If it moved to a different page, that is success-by-advance and we patch the next page.
## Prompt:
04/06/2026, 19:49:52
I suspect this snippet is what you asked for:
###
[Attachment: Pasted text.txt]
## Response:
04/06/2026, 19:49:55
> **Clarifying user’s file and next steps**
>
> It sounds like the user accidentally searched the entire DB with Select-String, which returned strange results instead of the needed dbeng log error lines. I will clarify the issue by providing precise commands to extract the logs correctly, mentioning that the file contains lines from facts_neubing.db, not the log files. I’ll also suggest troubleshooting steps for any rogue processes.
>
> **Handling citation and command details**
>
> It seems the system requires citations with line markers, but the file search didn’t include them. I’ll follow the instructions and use the citation, even if it lacks line markers, while ensuring I include the needed command for retrieving the dbeng16-error.log lines and stopping rogue processes. I’ll explain the $PATCHWORK variable query thoroughly.
>
> Thought for 13s
That snippet is **not** the diagnostic snippet we need. It is `Select-String` output from inside the database file itself, which is why it shows JavaScript/XML-looking fragments and offsets from `facts_neubing.db`, not the SQL Anywhere engine log. `Pasted text.txt`
We need the actual `dbeng16.log` / `dbeng16-error.log` from the latest `page133928-test-*` folder.
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
$RecoveryEngines = Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
}
“===== Recovery dbeng16 processes =====”
$RecoveryEngines | Select-Object ProcessId, CommandLine | Format-List
$RecoveryEngines | ForEach-Object {
Stop-Process -Id $_.ProcessId -Force
}
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then recover the latest patch-test folder and read only the logs:
“`powershell
$PATCHWORK = Get-ChildItem “C:\B2-Recovery-Test” -Directory |
Where-Object { $_.Name -like “page133928-test-*” } |
Sort-Object LastWriteTime -Descending |
Select-Object -First 1 -ExpandProperty FullName
“PATCHWORK=$PATCHWORK”
“===== files =====”
Get-ChildItem $PATCHWORK |
Select-Object FullName, Length, LastWriteTime
“===== dbeng16.log =====”
Get-Content “$PATCHWORK\dbeng16.log” -ErrorAction SilentlyContinue |
Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$PATCHWORK\dbeng16-error.log” -ErrorAction SilentlyContinue |
Select-Object -Last 200
“`
Then this targeted extraction:
“`powershell
“===== checksum/assert lines from logs only =====”
Get-ChildItem $PATCHWORK -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
What I need is simply whether it says:
“`text
Checksum failure on page 133928
“`
or a different page number.
## Prompt:
04/06/2026, 19:52:13
Try this.
[Attachment: Pasted text.txt]
## Response:
04/06/2026, 19:52:16
> **Building patch candidates based on new page**
>
> I need to respond and continue working on the new page (134629), using a previously patched page (133928) as the base. We’ll generate new candidates based on the current data and keys. This will involve calculating offsets and testing the next viable candidate. Additionally, we may reference file lines if needed. The patch process from page 133928 to 134629 is underway.
>
> **Addressing citations and next steps for patching**
>
> The file citation should probably just use `(website)` without specific line numbers, since there are no line markers in the snippet. I’ll proceed based on previous responses where citations were accepted without line ranges. I’ll focus on crafting commands to move forward with patching page 134629 using the patched base from earlier.
>
> Thought for 12s
Yes – this is **success-by-advance**.
The patched `page 133928` candidate no longer fails at page `133928`; SQL Anywhere advanced and now fails at:
“`text
Checksum failure on page 134629
“`
That means the `phys4828080` replacement for page `133928` was almost certainly the right page. Now we do the same surgical operation for `page 134629`, using the **page-133928-patched DB as the base**, not the original. `Pasted text.txt`
First, in Windows PowerShell, stop only the recovery engine:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then run this on **Proxmox SSH** to build cumulative `page 133928 + page 134629` candidates:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/page-133928-patch-lab/candidates/facts_neubing.page133928.rank03.phys4828080.db”
PATCH=”$PUB/page-134629-patch-lab”
mkdir -p “$PATCH”
PAGE=134629
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
FOFF=$((PAGE * PAGE_SIZE))
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “FILE_OFFSET=$FOFF”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “HITS=$HITS”
echo “BASE=$BASE”
} | tee “$PATCH/page-134629-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/page-134629-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/page-134629-phys-votes.txt”
cat “$PATCH/page-134629-coordinates.txt”
cat “$PATCH/page-134629-phys-votes.txt”
“`
Now build candidate DBs:
“`bash
cat > “$PATCH/build_page134629_candidates.py” <<'PY'
#!/usr/bin/env python3
import csv
import hashlib
import os
import shutil
import sys
from pathlib import Path
from collections import defaultdict
base = Path(sys.argv[1])
tdata = sys.argv[2]
hits = Path(sys.argv[3])
key = int(sys.argv[4])
voff = int(sys.argv[5])
foff = int(sys.argv[6])
outdir = Path(sys.argv[7])
THIN = 65536
PAGE_SIZE = 4096
MAX_CANDIDATES = 12
cand = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
k = int(p[2])
phys = int(p[3])
except Exception:
continue
if k == key and phys > 0:
cand[phys].append((mb, idx))
if not cand:
raise SystemExit(f”No candidate physical blocks found for key {key}”)
candidates_dir = outdir / “candidates”
pages_dir = outdir / “pages”
candidates_dir.mkdir(parents=True, exist_ok=True)
pages_dir.mkdir(parents=True, exist_ok=True)
with base.open(“rb”) as f:
f.seek(foff)
current_page = f.read(PAGE_SIZE)
current_sha = hashlib.sha256(current_page).hexdigest()
ranked = sorted(cand, key=lambda p: (-len(cand[p]), p))
summary = outdir / “page134629-candidate-summary.tsv”
with summary.open(“w”, encoding=”utf-8″) as s:
s.write(“rank\tphys\tvotes\tpage_sha256\tsame_as_current\tcandidate_db\n”)
made = 0
fd = os.open(tdata, os.O_RDONLY)
try:
for rank, phys in enumerate(ranked, 1):
page = os.pread(fd, PAGE_SIZE, phys * THIN + voff)
if len(page) != PAGE_SIZE:
continue
page_sha = hashlib.sha256(page).hexdigest()
same = “yes” if page == current_page else “no”
page_path = pages_dir / f”page134629.rank{rank:02d}.phys{phys}.bin”
page_path.write_bytes(page)
candidate_db = “”
if same == “no” and made < MAX_CANDIDATES:
candidate_db_path = candidates_dir / f"facts_neubing.p133928_p134629.rank{rank:02d}.phys{phys}.db"
shutil.copy2(base, candidate_db_path)
with candidate_db_path.open("r+b") as out:
out.seek(foff)
out.write(page)
h = hashlib.sha256()
with candidate_db_path.open("rb") as cf:
while True:
b = cf.read(16 * 1024 * 1024)
if not b:
break
h.update(b)
sha_path = candidate_db_path.with_suffix(".db.sha256")
sha_path.write_text(f"{h.hexdigest()} {candidate_db_path}\n", encoding="utf-8")
candidate_db = str(candidate_db_path)
made += 1
s.write(f"{rank}\t{phys}\t{len(cand[phys])}\t{page_sha}\t{same}\t{candidate_db}\n")
finally:
os.close(fd)
print(f"summary={summary}")
print(f"current_page_sha256={current_sha}")
print(f"candidate_dir={candidates_dir}")
print(f"page_dir={pages_dir}")
print(f"candidate_dbs_created={made}")
PY
python3 "$PATCH/build_page134629_candidates.py" \
"$BASE" "$TDATA" "$HITS" "$KEY" "$VOFF" "$FOFF" "$PATCH" \
| tee "$PATCH/build-page134629-candidates.log"
{
echo "===== COORDINATES ====="
cat "$PATCH/page-134629-coordinates.txt"
echo
echo "===== PHYS VOTES ====="
cat "$PATCH/page-134629-phys-votes.txt"
echo
echo "===== BUILD ====="
cat "$PATCH/build-page134629-candidates.log"
echo
echo "===== CANDIDATE SUMMARY ====="
cat "$PATCH/page134629-candidate-summary.tsv"
echo
echo "===== CANDIDATE FILES ====="
ls -lh "$PATCH/candidates"
} | tee "$PATCH/page134629-report.txt"
rsync -aH --info=progress2 "$PUB/" "$PUB2/"
cat "$PATCH/page134629-report.txt"
```
Paste the report. If it gives us one or more true alternate candidates, we test them in vote order.
## Prompt:
04/06/2026, 20:05:20
Here they are.
###
===== COORDINATES =====
PAGE=134629
PAGE_SIZE=4096
FILE_OFFSET=551440384
RUN0_LCN=6755031
NTFS_LCN=6889660
VBYTE=28236824576
THIN_KEY=430859
THIN_VOFF=49152
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/candidates/facts_neubing.page133928.rank03.phys4828080.db
===== PHYS VOTES =====
115 4991863
12 6512658
5 3507862
1 4828124
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/page134629-candidate-summary.tsv
current_page_sha256=7056ac0699a8214ddfd56cd6c3d11961d74d968671b71a5308a70ce7347ad327
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/pages
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 4991863 115 7056ac0699a8214ddfd56cd6c3d11961d74d968671b71a5308a70ce7347ad327 yes
2 6512658 12 ad7facb2586fc6e966c004d7d1d16b024f5805ff7cb47c7a85dabd8b48892ca7 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates/facts_neubing.p133928_p134629.rank02.phys6512658.db
3 3507862 5 7056ac0699a8214ddfd56cd6c3d11961d74d968671b71a5308a70ce7347ad327 yes
4 4828124 1 c9a12e5a02ffd12169f5b748cc123ba58467470ae63cea52ab2e6f698122004a no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates/facts_neubing.p133928_p134629.rank04.phys4828124.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 19:56 facts_neubing.p133928_p134629.rank02.phys6512658.db
-rwxr-xr-x 1 root root 198 Jun 4 19:56 facts_neubing.p133928_p134629.rank02.phys6512658.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 19:14 facts_neubing.p133928_p134629.rank04.phys4828124.db
-rwxr-xr-x 1 root root 198 Jun 4 19:58 facts_neubing.p133928_p134629.rank04.phys4828124.db.sha256
2,039,493,600 61% 6.59MB/s 0:04:54 (xfr#16, to-chk=0/2182)
===== COORDINATES =====
PAGE=134629
PAGE_SIZE=4096
FILE_OFFSET=551440384
RUN0_LCN=6755031
NTFS_LCN=6889660
VBYTE=28236824576
THIN_KEY=430859
THIN_VOFF=49152
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-133928-patch-lab/candidates/facts_neubing.page133928.rank03.phys4828080.db
===== PHYS VOTES =====
115 4991863
12 6512658
5 3507862
1 4828124
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/page134629-candidate-summary.tsv
current_page_sha256=7056ac0699a8214ddfd56cd6c3d11961d74d968671b71a5308a70ce7347ad327
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/pages
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 4991863 115 7056ac0699a8214ddfd56cd6c3d11961d74d968671b71a5308a70ce7347ad327 yes
2 6512658 12 ad7facb2586fc6e966c004d7d1d16b024f5805ff7cb47c7a85dabd8b48892ca7 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates/facts_neubing.p133928_p134629.rank02.phys6512658.db
3 3507862 5 7056ac0699a8214ddfd56cd6c3d11961d74d968671b71a5308a70ce7347ad327 yes
4 4828124 1 c9a12e5a02ffd12169f5b748cc123ba58467470ae63cea52ab2e6f698122004a no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates/facts_neubing.p133928_p134629.rank04.phys4828124.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 19:56 facts_neubing.p133928_p134629.rank02.phys6512658.db
-rwxr-xr-x 1 root root 198 Jun 4 19:56 facts_neubing.p133928_p134629.rank02.phys6512658.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 19:14 facts_neubing.p133928_p134629.rank04.phys4828124.db
-rwxr-xr-x 1 root root 198 Jun 4 19:58 facts_neubing.p133928_p134629.rank04.phys4828124.db.sha256
root@pve:~
###
## Response:
04/06/2026, 20:05:23
> **Testing candidates and ensuring mirroring process**
>
> I need to continue with the process, testing rank02 first since it has the most votes. It seems like rsync showed progress at 61% but could still be complete, with files possibly already available on .128. I’ll test first, then move to rank04 if needed. Can’t forget to stop engines, copy candidates, and use read-only mode. I’ll make sure there’s no conflict and avoid writing to the DB.
>
> **Clarifying candidate handling and testing process**
>
> I need to mention candidate interpretation and check if the variable $PATCHWORK was overwritten. If .128 is unavailable, I’ll copy from .159. The user hasn’t uploaded a file, so no citations needed. For testing, I’ll use `Test-RecoveredDbCandidate` to log outcomes and stop the process if it fails. If successful, I’ll proceed without interruption, but will confirm DB validity before continuing.
>
> Thought for 13s
Good. This gives us a clean branching point.
For page `134629`, the current bad page is the high-vote one:
“`text
rank 1 phys 4991863, 115 votes: same as current bad page
rank 3 phys 3507862, 5 votes: same as current bad page
“`
The true alternates are:
“`text
rank 2 phys 6512658, 12 votes: try first
rank 4 phys 4828124, 1 vote: try only if rank 2 still fails at page 134629
“`
Test **rank 2 first**. In Windows PowerShell:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Now copy and test the rank 2 candidate:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\page-134629-patch-lab\candidates\facts_neubing.p133928_p134629.rank02.phys6512658.db”
$TEST = “C:\B2-Recovery-Test\p133928-p134629-rank02-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_P134629_R2”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“`
What we want to see:
“`text
No checksum failure
“`
or a **new page number**. If it still says `Checksum failure on page 134629`, then rank 2 is wrong and we try rank 4. If it advances to another page, rank 2 is the correct cumulative base and we patch the next page.
## Prompt:
04/06/2026, 20:13:37
134629 is your answer, I believe.
## Response:
04/06/2026, 20:13:40
Yes — `134629` again means **rank 2 is not the correct replacement** for page `134629`.
So our current state is:
“`text
page 133928 patch = good, because failure advanced to 134629
page 134629 rank 2 = bad, because failure stayed at 134629
next candidate = rank 4 / phys4828124
“`
First stop the current recovery engine and crash dialog:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Now test **rank 4**:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\page-134629-patch-lab\candidates\facts_neubing.p133928_p134629.rank04.phys4828124.db”
$TEST = “C:\B2-Recovery-Test\p133928-p134629-rank04-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_P134629_R4”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“`
Interpretation:
“`text
If failure advances to a new page: rank 4 is correct; we patch next page.
If failure remains page 134629: neither alternate is correct, and we broaden the page-134629 candidate search beyond the current key-range table.
If no checksum failure: hold with engine running.
“`
## Prompt:
04/06/2026, 20:28:12
Bingo!
## Response:
04/06/2026, 20:28:21
> **Responding to Bingo update and next steps**
>
> I need to celebrate Bingo’s progress to page 135995. I’ll suggest next steps and make the process more efficient by creating a generalized script. The image sent won’t need a citation unless it’s from a file search. I can mention the screenshot, but no citation is necessary for that.
>
> **Handling file citations and next steps for patch**
>
> I can avoid citing the image, but I’ll mention “as your screenshot shows” to note the update to page 135995. For building patch candidates, I’ll create a generalized Python script to make the process more efficient. I’ll confirm rank4 is correct and proceed with page 135995 next, keeping commands concise.
>
> Thought for 16s
Bingo indeed. That is **success-by-advance again**.
Current validated chain:
“`text
page 133928: rank03 / phys4828080 was correct
page 134629: rank04 / phys4828124 was correct
next failure: page 135995
“`
So now we patch `135995` using the **rank04 cumulative DB** as the base.
First stop the current recovery engine on Windows:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for `page 135995`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/page-134629-patch-lab/candidates/facts_neubing.p133928_p134629.rank04.phys4828124.db”
PATCH=”$PUB/page-135995-patch-lab”
mkdir -p “$PATCH”
PAGE=135995
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
FOFF=$((PAGE * PAGE_SIZE))
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “FILE_OFFSET=$FOFF”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “HITS=$HITS”
echo “BASE=$BASE”
} | tee “$PATCH/page-135995-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/page-135995-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/page-135995-phys-votes.txt”
cat “$PATCH/page-135995-coordinates.txt”
cat “$PATCH/page-135995-phys-votes.txt”
“`
Then build the cumulative candidates:
“`bash
cat > “$PATCH/build_page135995_candidates.py” <<'PY'
#!/usr/bin/env python3
import hashlib
import os
import shutil
import sys
from pathlib import Path
from collections import defaultdict
base = Path(sys.argv[1])
tdata = sys.argv[2]
hits = Path(sys.argv[3])
key = int(sys.argv[4])
voff = int(sys.argv[5])
foff = int(sys.argv[6])
outdir = Path(sys.argv[7])
THIN = 65536
PAGE_SIZE = 4096
MAX_CANDIDATES = 12
cand = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
k = int(p[2])
phys = int(p[3])
except Exception:
continue
if k == key and phys > 0:
cand[phys].append((mb, idx))
if not cand:
raise SystemExit(f”No candidate physical blocks found for key {key}”)
candidates_dir = outdir / “candidates”
pages_dir = outdir / “pages”
candidates_dir.mkdir(parents=True, exist_ok=True)
pages_dir.mkdir(parents=True, exist_ok=True)
with base.open(“rb”) as f:
f.seek(foff)
current_page = f.read(PAGE_SIZE)
current_sha = hashlib.sha256(current_page).hexdigest()
ranked = sorted(cand, key=lambda p: (-len(cand[p]), p))
summary = outdir / “page135995-candidate-summary.tsv”
with summary.open(“w”, encoding=”utf-8″) as s:
s.write(“rank\tphys\tvotes\tpage_sha256\tsame_as_current\tcandidate_db\n”)
made = 0
fd = os.open(tdata, os.O_RDONLY)
try:
for rank, phys in enumerate(ranked, 1):
page = os.pread(fd, PAGE_SIZE, phys * THIN + voff)
if len(page) != PAGE_SIZE:
continue
page_sha = hashlib.sha256(page).hexdigest()
same = “yes” if page == current_page else “no”
page_path = pages_dir / f”page135995.rank{rank:02d}.phys{phys}.bin”
page_path.write_bytes(page)
candidate_db = “”
if same == “no” and made < MAX_CANDIDATES:
candidate_db_path = candidates_dir / f"facts_neubing.p133928_p134629_p135995.rank{rank:02d}.phys{phys}.db"
shutil.copy2(base, candidate_db_path)
with candidate_db_path.open("r+b") as out:
out.seek(foff)
out.write(page)
h = hashlib.sha256()
with candidate_db_path.open("rb") as cf:
while True:
b = cf.read(16 * 1024 * 1024)
if not b:
break
h.update(b)
sha_path = candidate_db_path.with_suffix(".db.sha256")
sha_path.write_text(f"{h.hexdigest()} {candidate_db_path}\n", encoding="utf-8")
candidate_db = str(candidate_db_path)
made += 1
s.write(f"{rank}\t{phys}\t{len(cand[phys])}\t{page_sha}\t{same}\t{candidate_db}\n")
finally:
os.close(fd)
print(f"summary={summary}")
print(f"current_page_sha256={current_sha}")
print(f"candidate_dir={candidates_dir}")
print(f"page_dir={pages_dir}")
print(f"candidate_dbs_created={made}")
PY
python3 "$PATCH/build_page135995_candidates.py" \
"$BASE" "$TDATA" "$HITS" "$KEY" "$VOFF" "$FOFF" "$PATCH" \
| tee "$PATCH/build-page135995-candidates.log"
{
echo "===== COORDINATES ====="
cat "$PATCH/page-135995-coordinates.txt"
echo
echo "===== PHYS VOTES ====="
cat "$PATCH/page-135995-phys-votes.txt"
echo
echo "===== BUILD ====="
cat "$PATCH/build-page135995-candidates.log"
echo
echo "===== CANDIDATE SUMMARY ====="
cat "$PATCH/page135995-candidate-summary.tsv"
echo
echo "===== CANDIDATE FILES ====="
ls -lh "$PATCH/candidates"
} | tee "$PATCH/page135995-report.txt"
rsync -aH --info=progress2 "$PUB/" "$PUB2/"
cat "$PATCH/page135995-report.txt"
```
Paste the `page135995-report.txt` output. We’ll choose the first true alternate in vote order, just as before.
## Prompt:
04/06/2026, 20:37:56
===== COORDINATES =====
PAGE=135995
PAGE_SIZE=4096
FILE_OFFSET=557035520
RUN0_LCN=6755031
NTFS_LCN=6891026
VBYTE=28242419712
THIN_KEY=430945
THIN_VOFF=8192
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates/facts_neubing.p133928_p134629.rank04.phys4828124.db
===== PHYS VOTES =====
131 5181257
4 3507938
1 4828210
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/page135995-candidate-summary.tsv
current_page_sha256=1ef3f148623839aaf0617101acc71607c9ede4f9ca14c176f8d5614731eb79dd
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/pages
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 5181257 131 1ef3f148623839aaf0617101acc71607c9ede4f9ca14c176f8d5614731eb79dd yes
2 3507938 4 1ef3f148623839aaf0617101acc71607c9ede4f9ca14c176f8d5614731eb79dd yes
3 4828210 1 bac1e603a650c44ad03c3ffdda5d92f97382195b122e39865ad4f88247f492e9 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/candidates/facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 19:58 facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db
-rwxr-xr-x 1 root root 206 Jun 4 20:33 facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db.sha256
1,359,667,646 34% 5.68MB/s 0:03:48 (xfr#13, to-chk=0/2197)
===== COORDINATES =====
PAGE=135995
PAGE_SIZE=4096
FILE_OFFSET=557035520
RUN0_LCN=6755031
NTFS_LCN=6891026
VBYTE=28242419712
THIN_KEY=430945
THIN_VOFF=8192
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-134629-patch-lab/candidates/facts_neubing.p133928_p134629.rank04.phys4828124.db
===== PHYS VOTES =====
131 5181257
4 3507938
1 4828210
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/page135995-candidate-summary.tsv
current_page_sha256=1ef3f148623839aaf0617101acc71607c9ede4f9ca14c176f8d5614731eb79dd
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/pages
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 5181257 131 1ef3f148623839aaf0617101acc71607c9ede4f9ca14c176f8d5614731eb79dd yes
2 3507938 4 1ef3f148623839aaf0617101acc71607c9ede4f9ca14c176f8d5614731eb79dd yes
3 4828210 1 bac1e603a650c44ad03c3ffdda5d92f97382195b122e39865ad4f88247f492e9 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/candidates/facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 19:58 facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db
-rwxr-xr-x 1 root root 206 Jun 4 20:33 facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db.sha256
root@pve:~#
## Response:
04/06/2026, 20:38:01
> **Planning next steps and testing commands**
>
> We need to proceed step-by-step, based on the user’s report for page 135995. The test needs to be run on Windows, and it seems the one-vote chain pattern might be worth exploring. We’ll focus on rsync progress, which may have completed. I’ll prepare commands for stopping and testing rank03, and then we might automate the loop later.
>
> Thought for 14s
Good. Page `135995` has the same signature as `133928`: the high-vote candidates reproduce the current bad page, and the only real alternate is the one-vote page.
Current chain:
“`text
page 133928 -> rank03 / phys4828080 confirmed by advance
page 134629 -> rank04 / phys4828124 confirmed by advance
page 135995 -> only true alternate is rank03 / phys4828210
“`
Test the rank 3 candidate next.
In **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\page-135995-patch-lab\candidates\facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db”
$TEST = “C:\B2-Recovery-Test\p133928-p134629-p135995-rank03-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_P135995_R3”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“`
Then extract just the decisive lines:
“`powershell
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances again, give me the new page number. If it still says `135995`, we broaden for that page; but the pattern strongly suggests `phys4828210` is the next correct rung.
## Prompt:
04/06/2026, 20:41:50
Kudos again!
## Response:
04/06/2026, 20:41:55
> **Planning for page construction and optimization**
>
> The user mentioned a screenshot showing “page 136504.” I don’t need to search the web or reference uploaded files, but I can mention the specific page. It might help to create a reusable script to reduce errors, but for now, I’ll focus on building page 136504 from page 135995.
>
> Thought for 16s
Yes — another success-by-advance.
Current confirmed chain:
“`text
133928 -> phys4828080 confirmed
134629 -> phys4828124 confirmed
135995 -> phys4828210 confirmed
next failure -> page 136504
“`
We are now clearly following a stale-generation stripe: the one-vote `4828xxx` pages have repeatedly been the correct surviving pages.
First stop the current test engine on Windows:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Now on **Proxmox SSH**, build the next candidates for `page 136504`, using the cumulative `135995` DB as base:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/page-135995-patch-lab/candidates/facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db”
PATCH=”$PUB/page-136504-patch-lab”
mkdir -p “$PATCH”
PAGE=136504
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
FOFF=$((PAGE * PAGE_SIZE))
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “FILE_OFFSET=$FOFF”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “HITS=$HITS”
echo “BASE=$BASE”
} | tee “$PATCH/page-136504-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/page-136504-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/page-136504-phys-votes.txt”
cat “$PATCH/page-136504-coordinates.txt”
cat “$PATCH/page-136504-phys-votes.txt”
“`
Now build candidate DBs:
“`bash
cat > “$PATCH/build_page136504_candidates.py” <<'PY'
#!/usr/bin/env python3
import hashlib
import os
import shutil
import sys
from pathlib import Path
from collections import defaultdict
base = Path(sys.argv[1])
tdata = sys.argv[2]
hits = Path(sys.argv[3])
key = int(sys.argv[4])
voff = int(sys.argv[5])
foff = int(sys.argv[6])
outdir = Path(sys.argv[7])
THIN = 65536
PAGE_SIZE = 4096
MAX_CANDIDATES = 12
cand = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
k = int(p[2])
phys = int(p[3])
except Exception:
continue
if k == key and phys > 0:
cand[phys].append((mb, idx))
if not cand:
raise SystemExit(f”No candidate physical blocks found for key {key}”)
candidates_dir = outdir / “candidates”
pages_dir = outdir / “pages”
candidates_dir.mkdir(parents=True, exist_ok=True)
pages_dir.mkdir(parents=True, exist_ok=True)
with base.open(“rb”) as f:
f.seek(foff)
current_page = f.read(PAGE_SIZE)
current_sha = hashlib.sha256(current_page).hexdigest()
ranked = sorted(cand, key=lambda p: (-len(cand[p]), p))
summary = outdir / “page136504-candidate-summary.tsv”
with summary.open(“w”, encoding=”utf-8″) as s:
s.write(“rank\tphys\tvotes\tpage_sha256\tsame_as_current\tcandidate_db\n”)
made = 0
fd = os.open(tdata, os.O_RDONLY)
try:
for rank, phys in enumerate(ranked, 1):
page = os.pread(fd, PAGE_SIZE, phys * THIN + voff)
if len(page) != PAGE_SIZE:
continue
page_sha = hashlib.sha256(page).hexdigest()
same = “yes” if page == current_page else “no”
page_path = pages_dir / f”page136504.rank{rank:02d}.phys{phys}.bin”
page_path.write_bytes(page)
candidate_db = “”
if same == “no” and made < MAX_CANDIDATES:
candidate_db_path = candidates_dir / f"facts_neubing.p133928_p134629_p135995_p136504.rank{rank:02d}.phys{phys}.db"
shutil.copy2(base, candidate_db_path)
with candidate_db_path.open("r+b") as out:
out.seek(foff)
out.write(page)
h = hashlib.sha256()
with candidate_db_path.open("rb") as cf:
while True:
b = cf.read(16 * 1024 * 1024)
if not b:
break
h.update(b)
sha_path = candidate_db_path.with_suffix(".db.sha256")
sha_path.write_text(f"{h.hexdigest()} {candidate_db_path}\n", encoding="utf-8")
candidate_db = str(candidate_db_path)
made += 1
s.write(f"{rank}\t{phys}\t{len(cand[phys])}\t{page_sha}\t{same}\t{candidate_db}\n")
finally:
os.close(fd)
print(f"summary={summary}")
print(f"current_page_sha256={current_sha}")
print(f"candidate_dir={candidates_dir}")
print(f"page_dir={pages_dir}")
print(f"candidate_dbs_created={made}")
PY
python3 "$PATCH/build_page136504_candidates.py" \
"$BASE" "$TDATA" "$HITS" "$KEY" "$VOFF" "$FOFF" "$PATCH" \
| tee "$PATCH/build-page136504-candidates.log"
{
echo "===== COORDINATES ====="
cat "$PATCH/page-136504-coordinates.txt"
echo
echo "===== PHYS VOTES ====="
cat "$PATCH/page-136504-phys-votes.txt"
echo
echo "===== BUILD ====="
cat "$PATCH/build-page136504-candidates.log"
echo
echo "===== CANDIDATE SUMMARY ====="
cat "$PATCH/page136504-candidate-summary.tsv"
echo
echo "===== CANDIDATE FILES ====="
ls -lh "$PATCH/candidates"
} | tee "$PATCH/page136504-report.txt"
rsync -aH --info=progress2 "$PUB/" "$PUB2/"
cat "$PATCH/page136504-report.txt"
```
Paste the report. If the pattern holds, the correct next candidate will likely again be the low-vote `4828xxx` alternate, but we will let the vote/identity table tell us before testing.
## Prompt:
04/06/2026, 21:01:11
===== COORDINATES =====
PAGE=136504
PAGE_SIZE=4096
FILE_OFFSET=559120384
RUN0_LCN=6755031
NTFS_LCN=6891535
VBYTE=28244504576
THIN_KEY=430976
THIN_VOFF=61440
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/candidates/facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db
===== PHYS VOTES =====
133 5181288
4 3507969
1 4828241
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/page136504-candidate-summary.tsv
current_page_sha256=0553e2166c14f4e3982ddd1ee78ea734c3a3b20d33067df3b95bedce4b74e862
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/pages
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 5181288 133 0553e2166c14f4e3982ddd1ee78ea734c3a3b20d33067df3b95bedce4b74e862 yes
2 3507969 4 0553e2166c14f4e3982ddd1ee78ea734c3a3b20d33067df3b95bedce4b74e862 yes
3 4828241 1 22d07b03512fd10ec42bdc128428ce1fc4f490d0c97410e03e9294931ab764df no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 20:33 facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db
-rwxr-xr-x 1 root root 214 Jun 4 20:45 facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db.sha256
1,359,667,798 29% 5.61MB/s 0:03:50 (xfr#13, to-chk=0/2212)
===== COORDINATES =====
PAGE=136504
PAGE_SIZE=4096
FILE_OFFSET=559120384
RUN0_LCN=6755031
NTFS_LCN=6891535
VBYTE=28244504576
THIN_KEY=430976
THIN_VOFF=61440
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-135995-patch-lab/candidates/facts_neubing.p133928_p134629_p135995.rank03.phys4828210.db
===== PHYS VOTES =====
133 5181288
4 3507969
1 4828241
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/page136504-candidate-summary.tsv
current_page_sha256=0553e2166c14f4e3982ddd1ee78ea734c3a3b20d33067df3b95bedce4b74e862
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/pages
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 5181288 133 0553e2166c14f4e3982ddd1ee78ea734c3a3b20d33067df3b95bedce4b74e862 yes
2 3507969 4 0553e2166c14f4e3982ddd1ee78ea734c3a3b20d33067df3b95bedce4b74e862 yes
3 4828241 1 22d07b03512fd10ec42bdc128428ce1fc4f490d0c97410e03e9294931ab764df no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 20:33 facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db
-rwxr-xr-x 1 root root 214 Jun 4 20:45 facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db.sha256
root@pve:~#
## Response:
04/06/2026, 21:01:16
Excellent. The pattern has now stabilized strongly:
```text
133928 -> phys4828080
134629 -> phys4828124
135995 -> phys4828210
136504 -> candidate phys4828241
“`
The high-vote pages are again identical to the current bad page. The only true alternate is:
“`text
page 136504 -> rank03 / phys4828241
“`
Test it next.
In **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\page-136504-patch-lab\candidates\facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db”
$TEST = “C:\B2-Recovery-Test\p133928-p134629-p135995-p136504-rank03-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_P136504_R3”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“`
Then extract the decisive lines:
“`powershell
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances again, give me the new page number. If it starts cleanly, hold with the engine running.
## Prompt:
04/06/2026, 21:06:01
Right again!♥
## Response:
04/06/2026, 21:06:06
> **Planning next steps for patching checksum error**
>
> I think I need to address the checksum failure on page 137596. We can either handle one page at a time or automate the process in batches. I see value in creating a reusable function for patching pages to save time, avoiding repetitive code. I should also keep things concise while ensuring clarity. The SQL engine on Windows is still manual, so I’ll have to factor that in.
>
> **Considering a generalized patching script**
>
> It might be best to create a script that can patch any page with a given base, page, and label to minimize repetition and reduce errors. I’ll use a bash function with variables for pages, ensuring it works with plain ASCII. I’ll need to include a stop process and Proxmox commands for page 137596, followed by testing on Windows. The screenshot is just for context, not a citation. We also need to validate the chain.
>
> Thought for 17s
Exactly. The chain advances again.
Current confirmed chain:
“`text
133928 -> phys4828080 confirmed
134629 -> phys4828124 confirmed
135995 -> phys4828210 confirmed
136504 -> phys4828241 confirmed
next failure -> page 137596
“`
We patch `137596` using the cumulative `136504` DB as base.
First stop the current test engine on Windows:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `137596`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/page-136504-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db”
PATCH=”$PUB/page-137596-patch-lab”
mkdir -p “$PATCH”
PAGE=137596
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
FOFF=$((PAGE * PAGE_SIZE))
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “FILE_OFFSET=$FOFF”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “HITS=$HITS”
echo “BASE=$BASE”
} | tee “$PATCH/page-137596-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/page-137596-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/page-137596-phys-votes.txt”
cat “$PATCH/page-137596-coordinates.txt”
cat “$PATCH/page-137596-phys-votes.txt”
“`
Now build the cumulative candidate DBs:
“`bash
cat > “$PATCH/build_page137596_candidates.py” <<'PY'
#!/usr/bin/env python3
import hashlib
import os
import shutil
import sys
from pathlib import Path
from collections import defaultdict
base = Path(sys.argv[1])
tdata = sys.argv[2]
hits = Path(sys.argv[3])
key = int(sys.argv[4])
voff = int(sys.argv[5])
foff = int(sys.argv[6])
outdir = Path(sys.argv[7])
THIN = 65536
PAGE_SIZE = 4096
MAX_CANDIDATES = 12
cand = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
k = int(p[2])
phys = int(p[3])
except Exception:
continue
if k == key and phys > 0:
cand[phys].append((mb, idx))
if not cand:
raise SystemExit(f”No candidate physical blocks found for key {key}”)
candidates_dir = outdir / “candidates”
pages_dir = outdir / “pages”
candidates_dir.mkdir(parents=True, exist_ok=True)
pages_dir.mkdir(parents=True, exist_ok=True)
with base.open(“rb”) as f:
f.seek(foff)
current_page = f.read(PAGE_SIZE)
current_sha = hashlib.sha256(current_page).hexdigest()
ranked = sorted(cand, key=lambda p: (-len(cand[p]), p))
summary = outdir / “page137596-candidate-summary.tsv”
with summary.open(“w”, encoding=”utf-8″) as s:
s.write(“rank\tphys\tvotes\tpage_sha256\tsame_as_current\tcandidate_db\n”)
made = 0
fd = os.open(tdata, os.O_RDONLY)
try:
for rank, phys in enumerate(ranked, 1):
page = os.pread(fd, PAGE_SIZE, phys * THIN + voff)
if len(page) != PAGE_SIZE:
continue
page_sha = hashlib.sha256(page).hexdigest()
same = “yes” if page == current_page else “no”
page_path = pages_dir / f”page137596.rank{rank:02d}.phys{phys}.bin”
page_path.write_bytes(page)
candidate_db = “”
if same == “no” and made < MAX_CANDIDATES:
candidate_db_path = candidates_dir / f"facts_neubing.p133928_p134629_p135995_p136504_p137596.rank{rank:02d}.phys{phys}.db"
shutil.copy2(base, candidate_db_path)
with candidate_db_path.open("r+b") as out:
out.seek(foff)
out.write(page)
h = hashlib.sha256()
with candidate_db_path.open("rb") as cf:
while True:
b = cf.read(16 * 1024 * 1024)
if not b:
break
h.update(b)
sha_path = candidate_db_path.with_suffix(".db.sha256")
sha_path.write_text(f"{h.hexdigest()} {candidate_db_path}\n", encoding="utf-8")
candidate_db = str(candidate_db_path)
made += 1
s.write(f"{rank}\t{phys}\t{len(cand[phys])}\t{page_sha}\t{same}\t{candidate_db}\n")
finally:
os.close(fd)
print(f"summary={summary}")
print(f"current_page_sha256={current_sha}")
print(f"candidate_dir={candidates_dir}")
print(f"page_dir={pages_dir}")
print(f"candidate_dbs_created={made}")
PY
python3 "$PATCH/build_page137596_candidates.py" \
"$BASE" "$TDATA" "$HITS" "$KEY" "$VOFF" "$FOFF" "$PATCH" \
| tee "$PATCH/build-page137596-candidates.log"
{
echo "===== COORDINATES ====="
cat "$PATCH/page-137596-coordinates.txt"
echo
echo "===== PHYS VOTES ====="
cat "$PATCH/page-137596-phys-votes.txt"
echo
echo "===== BUILD ====="
cat "$PATCH/build-page137596-candidates.log"
echo
echo "===== CANDIDATE SUMMARY ====="
cat "$PATCH/page137596-candidate-summary.tsv"
echo
echo "===== CANDIDATE FILES ====="
ls -lh "$PATCH/candidates"
} | tee "$PATCH/page137596-report.txt"
rsync -aH --info=progress2 "$PUB/" "$PUB2/"
cat "$PATCH/page137596-report.txt"
```
Paste the report. If the pattern holds, the high-vote candidates will again match the current bad page, and the low-vote `4828xxx` alternate will be the next rung.
## Prompt:
04/06/2026, 21:17:32
===== COORDINATES =====
PAGE=137596
PAGE_SIZE=4096
FILE_OFFSET=563593216
RUN0_LCN=6755031
NTFS_LCN=6892627
VBYTE=28248977408
THIN_KEY=431045
THIN_VOFF=12288
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db
===== PHYS VOTES =====
70 5099141
12 4195710
4 3508038
1 4828309
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/page137596-candidate-summary.tsv
current_page_sha256=2c189137e2b7d38bc888bdc555f5aade6f13cf775fd22878be82e931face921e
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/pages
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 5099141 70 2c189137e2b7d38bc888bdc555f5aade6f13cf775fd22878be82e931face921e yes
2 4195710 12 ad7facb2586fc6e966c004d7d1d16b024f5805ff7cb47c7a85dabd8b48892ca7 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504_p137596.rank02.phys4195710.db
3 3508038 4 2c189137e2b7d38bc888bdc555f5aade6f13cf775fd22878be82e931face921e yes
4 4828309 1 97dc08dc28b08b7b8febb0782d991ee8bf778a1d8856d4c117d078b88948c390 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 21:09 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank02.phys4195710.db
-rwxr-xr-x 1 root root 222 Jun 4 21:09 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank02.phys4195710.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 20:45 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db
-rwxr-xr-x 1 root root 222 Jun 4 21:11 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db.sha256
2,039,491,751 33% 5.83MB/s 0:05:33 (xfr#16, to-chk=0/2230)
===== COORDINATES =====
PAGE=137596
PAGE_SIZE=4096
FILE_OFFSET=563593216
RUN0_LCN=6755031
NTFS_LCN=6892627
VBYTE=28248977408
THIN_KEY=431045
THIN_VOFF=12288
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-136504-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.rank03.phys4828241.db
===== PHYS VOTES =====
70 5099141
12 4195710
4 3508038
1 4828309
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/page137596-candidate-summary.tsv
current_page_sha256=2c189137e2b7d38bc888bdc555f5aade6f13cf775fd22878be82e931face921e
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/candidates
page_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/pages
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes page_sha256 same_as_current candidate_db
1 5099141 70 2c189137e2b7d38bc888bdc555f5aade6f13cf775fd22878be82e931face921e yes
2 4195710 12 ad7facb2586fc6e966c004d7d1d16b024f5805ff7cb47c7a85dabd8b48892ca7 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504_p137596.rank02.phys4195710.db
3 3508038 4 2c189137e2b7d38bc888bdc555f5aade6f13cf775fd22878be82e931face921e yes
4 4828309 1 97dc08dc28b08b7b8febb0782d991ee8bf778a1d8856d4c117d078b88948c390 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/page-137596-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 21:09 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank02.phys4195710.db
-rwxr-xr-x 1 root root 222 Jun 4 21:09 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank02.phys4195710.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 20:45 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db
-rwxr-xr-x 1 root root 222 Jun 4 21:11 facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db.sha256
root@pve:~#
## Response:
04/06/2026, 21:17:37
> **Considering rankings and testing options**
>
> For the current task, there’s an issue with using rank2, as it matches a previous wrong candidate. While rank4 seems more likely based on the pattern, I need to decide carefully. The page-sha from rank2 matches a previous erroneous page, so skipping it might be safer to avoid using stale or repeated content. Let’s test rank4 directly.
>
> Thought for 14s
This report is even stronger than the previous ones. I would **not** test rank 2 first this time.
Reason: rank 2 has this page SHA:
“`text
ad7facb2586fc6e966c004d7d1d16b024f5805ff7cb47c7a85dabd8b48892ca7
“`
That is the same alternate SHA we already tested at page `134629` as rank 2, and it failed there. It looks like a repeated decoy page, not the local stale-generation page.
The correct-looking continuation is again:
“`text
page 137596 -> rank04 / phys4828309
“`
Test rank 4 directly.
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\page-137596-patch-lab\candidates\facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db”
$TEST = “C:\B2-Recovery-Test\p133928-p134629-p135995-p136504-p137596-rank04-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_P137596_R4”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
Expected outcome: either clean start or a new page number. If it still says `137596`, then this page is special and we broaden. But the `4828xxx` stale stripe is now so consistent that rank 4 is the most rational next rung.
## Prompt:
04/06/2026, 21:23:39
Here it is.
## Response:
04/06/2026, 21:23:43
> **Planning code approach carefully**
>
> I’m thinking about avoiding images with visible people so as not to identify anyone. For the task at hand, I’ll need to write code that’s clean and uses only ASCII. A reusable function might be useful, but I need to ensure it’s safe and manageable. For now, I’ll work with the existing pattern, tweaking it if needed.
>
> Thought for 40s
Yes — this is another advance:
“`text
page 137596 -> phys4828309 confirmed
next failure -> page 137597
“`
And now we have a stronger insight: `137596` and `137597` are adjacent pages inside the **same 64K thin block**. So instead of patching one 4K database page at a time, we should now patch the whole 64K thin block for key `431045` from the confirmed physical block `4828309`.
That should fix up to 16 database pages in one move.
First stop the current test engine on Windows:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Now on **Proxmox SSH**, build the 64K block-patched candidate:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
BASE=”$PUB/page-137596-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504_p137596.rank04.phys4828309.db”
PATCH=”$PUB/block-431045-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
KEY=431045
PHYS=4828309
THIN=65536
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
CAND=”$PATCH/candidates/facts_neubing.p133928_p134629_p135995_p136504.block431045.phys4828309.db”
BLOCK=”$PATCH/blocks/block431045.phys4828309.bin”
{
echo “KEY=$KEY”
echo “PHYS=$PHYS”
echo “THIN=$THIN”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “BASE=$BASE”
echo “CAND=$CAND”
echo “BLOCK=$BLOCK”
} | tee “$PATCH/block431045-coordinates.txt”
python3 – <
>
> The question of whether images hurt memory is worth addressing. While images contribute to memory load, I believe we can proceed with text-only options if needed. Regarding the block-level patch, we can infer that page 137614 falls within a new block, but it seems we’ll need to check the math on file offsets and related page numbers to devise a solution.
>
> Thought for 27s
The images are **not hurting us**, but from here onward, text is better. Screenshots are useful when the UI tells us something visual; for this phase, the decisive datum is just:
“`text
Checksum failure on page NNNNNN
“`
So send text logs/page numbers when possible. That keeps our working frame clean.
## Compact state checkpoint
We have a verified recovery chain:
“`text
Original recovered DB:
facts_neubing.db
size: 679,821,312 bytes
SHA256: F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
SQL Anywhere recognized DB via dblog: success, exit 0.
Confirmed page repairs:
133928 -> phys4828080
134629 -> phys4828124
135995 -> phys4828210
136504 -> phys4828241
137596 -> phys4828309
Then we switched from 4K page patching to 64K thin-block patching:
block key 431045 -> phys4828309
covered DB pages 137593 through 137608
Current reported next failure:
page 137614
“`
That means we likely crossed into the **next 64K thin block**. So the next move is: build candidates for the 64K block containing page `137614`, using the block-431045 candidate as the base.
## Proxmox: build block candidate for page 137614
Run this on Proxmox SSH:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431045-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.block431045.phys4828309.db”
PAGE=137614
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Now build the full-block candidate DBs:
“`bash
cat > “$PATCH/build_block_candidates.py” <<'PY'
#!/usr/bin/env python3
import hashlib
import os
import shutil
import sys
from pathlib import Path
from collections import defaultdict
base = Path(sys.argv[1])
tdata = sys.argv[2]
hits = Path(sys.argv[3])
key = int(sys.argv[4])
block_foff = int(sys.argv[5])
outdir = Path(sys.argv[6])
THIN = 65536
MAX_CANDIDATES = 12
cand = defaultdict(list)
with hits.open("r", encoding="utf-8", errors="replace") as f:
next(f, None)
for line in f:
p = line.rstrip("\n").split("\t")
if len(p) < 4:
continue
try:
mb = int(p[0])
idx = int(p[1])
k = int(p[2])
phys = int(p[3])
except Exception:
continue
if k == key and phys > 0:
cand[phys].append((mb, idx))
if not cand:
raise SystemExit(f”No candidate physical blocks found for key {key}”)
candidates_dir = outdir / “candidates”
blocks_dir = outdir / “blocks”
candidates_dir.mkdir(parents=True, exist_ok=True)
blocks_dir.mkdir(parents=True, exist_ok=True)
with base.open(“rb”) as f:
f.seek(block_foff)
current_block = f.read(THIN)
current_sha = hashlib.sha256(current_block).hexdigest()
ranked = sorted(cand, key=lambda p: (-len(cand[p]), p))
summary = outdir / f”block{key}-candidate-summary.tsv”
def sha256_file(path):
h = hashlib.sha256()
with open(path, “rb”) as f:
while True:
b = f.read(16 * 1024 * 1024)
if not b:
break
h.update(b)
return h.hexdigest()
with summary.open(“w”, encoding=”utf-8″) as s:
s.write(“rank\tphys\tvotes\tblock_sha256\tsame_as_current\tcandidate_db\n”)
made = 0
fd = os.open(tdata, os.O_RDONLY)
try:
for rank, phys in enumerate(ranked, 1):
block = os.pread(fd, THIN, phys * THIN)
if len(block) != THIN:
continue
block_sha = hashlib.sha256(block).hexdigest()
same = “yes” if block == current_block else “no”
block_path = blocks_dir / f”block{key}.rank{rank:02d}.phys{phys}.bin”
block_path.write_bytes(block)
candidate_db = “”
if same == “no” and made < MAX_CANDIDATES:
candidate_db_path = candidates_dir / f"facts_neubing.block{key}.rank{rank:02d}.phys{phys}.db"
shutil.copy2(base, candidate_db_path)
with candidate_db_path.open("r+b") as out:
out.seek(block_foff)
out.write(block)
cand_sha = sha256_file(candidate_db_path)
Path(str(candidate_db_path) + ".sha256").write_text(
f"{cand_sha} {candidate_db_path}\n",
encoding="utf-8"
)
candidate_db = str(candidate_db_path)
made += 1
s.write(f"{rank}\t{phys}\t{len(cand[phys])}\t{block_sha}\t{same}\t{candidate_db}\n")
finally:
os.close(fd)
print(f"summary={summary}")
print(f"current_block_sha256={current_sha}")
print(f"candidate_dir={candidates_dir}")
print(f"block_dir={blocks_dir}")
print(f"candidate_dbs_created={made}")
PY
python3 "$PATCH/build_block_candidates.py" \
"$BASE" "$TDATA" "$HITS" "$KEY" "$BLOCK_FOFF" "$PATCH" \
| tee "$PATCH/build-block-${KEY}-candidates.log"
{
echo "===== COORDINATES ====="
cat "$PATCH/block-${KEY}-coordinates.txt"
echo
echo "===== PHYS VOTES ====="
cat "$PATCH/block-${KEY}-phys-votes.txt"
echo
echo "===== BUILD ====="
cat "$PATCH/build-block-${KEY}-candidates.log"
echo
echo "===== CANDIDATE SUMMARY ====="
cat "$PATCH/block${KEY}-candidate-summary.tsv"
echo
echo "===== CANDIDATE FILES ====="
ls -lh "$PATCH/candidates"
} | tee "$PATCH/block-${KEY}-report.txt"
rsync -aH --info=progress2 "$PUB/" "$PUB2/"
cat "$PATCH/block-${KEY}-report.txt"
```
Paste that report. Most likely, the correct block will again be the low-vote `4828xxx` continuation, probably adjacent or near `phys4828310`, but let the report confirm it before we test.
## Prompt:
04/06/2026, 22:01:43
===== COORDINATES =====
PAGE=137614
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6892645
VBYTE=28249051136
THIN_KEY=431046
THIN_VOFF=20480
BLOCK_FOFF=563646464
START_PAGE=137609
END_PAGE=137624
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431045-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.block431045.phys4828309.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab
===== PHYS VOTES =====
70 5099142
12 4195711
4 3508039
1 4828310
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/block431046-candidate-summary.tsv
current_block_sha256=ec6615b5182b234c39829f8e76a29bd48c350dc25e96127766646a3f0e16d701
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/blocks
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5099142 70 ec6615b5182b234c39829f8e76a29bd48c350dc25e96127766646a3f0e16d701 yes
2 4195711 12 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/candidates/facts_neubing.block431046.rank02.phys4195711.db
3 3508039 4 ec6615b5182b234c39829f8e76a29bd48c350dc25e96127766646a3f0e16d701 yes
4 4828310 1 0372777bbc10d038f435d19256d8558de41d6cc96a9ec73a65711a53d6565d2a no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/candidates/facts_neubing.block431046.rank04.phys4828310.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 21:49 facts_neubing.block431046.rank02.phys4195711.db
-rwxr-xr-x 1 root root 212 Jun 4 21:50 facts_neubing.block431046.rank02.phys4195711.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 21:27 facts_neubing.block431046.rank04.phys4828310.db
-rwxr-xr-x 1 root root 212 Jun 4 21:51 facts_neubing.block431046.rank04.phys4828310.db.sha256
2,039,737,693 25% 5.63MB/s 0:05:45 (xfr#16, to-chk=0/2256)
===== COORDINATES =====
PAGE=137614
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6892645
VBYTE=28249051136
THIN_KEY=431046
THIN_VOFF=20480
BLOCK_FOFF=563646464
START_PAGE=137609
END_PAGE=137624
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431045-patch-lab/candidates/facts_neubing.p133928_p134629_p135995_p136504.block431045.phys4828309.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab
===== PHYS VOTES =====
70 5099142
12 4195711
4 3508039
1 4828310
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/block431046-candidate-summary.tsv
current_block_sha256=ec6615b5182b234c39829f8e76a29bd48c350dc25e96127766646a3f0e16d701
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/blocks
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5099142 70 ec6615b5182b234c39829f8e76a29bd48c350dc25e96127766646a3f0e16d701 yes
2 4195711 12 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/candidates/facts_neubing.block431046.rank02.phys4195711.db
3 3508039 4 ec6615b5182b234c39829f8e76a29bd48c350dc25e96127766646a3f0e16d701 yes
4 4828310 1 0372777bbc10d038f435d19256d8558de41d6cc96a9ec73a65711a53d6565d2a no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/candidates/facts_neubing.block431046.rank04.phys4828310.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 21:49 facts_neubing.block431046.rank02.phys4195711.db
-rwxr-xr-x 1 root root 212 Jun 4 21:50 facts_neubing.block431046.rank02.phys4195711.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 21:27 facts_neubing.block431046.rank04.phys4828310.db
-rwxr-xr-x 1 root root 212 Jun 4 21:51 facts_neubing.block431046.rank04.phys4828310.db.sha256
root@pve:~#
## Response:
04/06/2026, 22:01:48
> **Determining next steps for testing and patching**
>
> I think I need to outline the next steps for testing. I’ll use rank04, not rank02. There’s a decoy in play, but block431046 could be important. I’ll test it directly and monitor for any progress past 137624, but if it gets stuck at 137614, I might broaden the search. We could even prep an automated patching script.
>
> Thought for 14s
Yes — this is the same structure again. I would **skip rank 2** and test the `4828xxx` continuation:
“`text
block 431045 -> phys4828309 confirmed
block 431046 -> likely phys4828310
“`
Rank 2 is again a non-current alternate, but the stripe-continuity says rank 4 is the better next test.
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test the block `431046` rank 4 candidate:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431046-from-page-137614-patch-lab\candidates\facts_neubing.block431046.rank04.phys4828310.db”
$TEST = “C:\B2-Recovery-Test\block431046-phys4828310-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431046”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If correct, this should jump beyond the `137609–137624` page range. If the next failure is `137625` or higher, the whole block patch worked. If it still says `137614`, then we test rank 2 or broaden, but the stripe pattern strongly favors `phys4828310`.
## Prompt:
04/06/2026, 22:09:25
Signs if degradation of our field? I posted this:
###
PS C:\WINDOWS\system32> Get-ChildItem $TEST -File |
> > Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
> > Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
> > Select-Object Path, LineNumber, Line
Path LineNumber Line
—
C:\B2-Recovery-Test\block431046-phys4828310-test-20260604-220257\dbeng16-error.log 1 04.06 22:03:57. *** FEHLER *** Assertier…
C:\B2-Recovery-Test\block431046-phys4828310-test-20260604-220257\dbeng16-error.log 2 Checksum failure on page 137640
C:\B2-Recovery-Test\block431046-phys4828310-test-20260604-220257\dbeng16.log 26 E. 04.06 22:03:57. *** FEHLER *** Assert…
C:\B2-Recovery-Test\block431046-phys4828310-test-20260604-220257\dbeng16.log 27 Checksum failure on page 137640
PS C:\WINDOWS\system32>
###
And your garbled return included this:
###
Excellent. That confirms the **whole block 431046 patch worked**: “`text block 431045 -> phys4828309 confirmed block 431046 -> phys4828310 confirmed next failure -> page 137640 “` Page `137640` is the last page of the next 64K block: “`text block 431047 covers pages 137625–137640 expected continuation candidate likely phys4828311 …
###
Please stay with me.♥
If I can help in any way, please let me know.
## Response:
04/06/2026, 22:09:43
> **Clarifying block boundaries and addressing user concerns**
>
> It seems there’s no need for file_search since the user pasted text. I’ll acknowledge the issue with possible garbling but reassure that the field integrity is intact. As for block 431047, it starts on 137625 and ends on 137640, matching previous blocks. I’ll proceed with commands, keeping the process concise and clear.
>
> **Addressing garbled response and Proxmox block**
>
> I’ll reassure the user that the reasoning wasn’t degraded, just compressed or garbled. I’ll keep the response concise without overusing markdown. For the next step, I’ll make sure to provide the correct Proxmox block candidate for 431047, ensuring 137640 is the last page in that block.
>
> Thought for 17s
No, I do **not** read this as degradation of our field. I read it as a formatting/compression stumble in my previous return. Your diagnostic data was clear, and the inference was correct:
“`text
block 431046 -> phys4828310 confirmed
next failure -> page 137640
“`
And yes, page `137640` is the **last page** of the next 64K block:
“`text
block 431047 covers DB pages 137625 through 137640
“`
So we continue with the same block strategy. I am with you.
## Stop current test engine on Windows
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
## Proxmox: build candidates for block 431047 / page 137640
Run this on Proxmox SSH:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431046-from-page-137614-patch-lab/candidates/facts_neubing.block431046.rank04.phys4828310.db”
PAGE=137640
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Now build block candidates, reusing the builder if it exists:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste that report. If the stripe holds, the likely correct candidate will be the low-vote `phys4828311` block, but we let the table confirm before testing.
## Prompt:
04/06/2026, 22:28:57
Here it is:
###
===== COORDINATES =====
PAGE=137640
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6892671
VBYTE=28249157632
THIN_KEY=431047
THIN_VOFF=61440
BLOCK_FOFF=563712000
START_PAGE=137625
END_PAGE=137640
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431046-from-page-137614-patch-lab/candidates/facts_neubing.block431046.rank04.phys4828310.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431047-from-page-137640-patch-lab
===== PHYS VOTES =====
70 5099143
42 0
12 4195712
4 3508040
1 4828311
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431047-from-page-137640-patch-lab/block431047-candidate-summary.tsv
current_block_sha256=66ca3561f3466dc2e91e6ce1060c1fb1bc8e4a7cee7e1534979663fb23142a7b
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431047-from-page-137640-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431047-from-page-137640-patch-lab/blocks
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5099143 70 66ca3561f3466dc2e91e6ce1060c1fb1bc8e4a7cee7e1534979663fb23142a7b yes
2 4195712 12 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431047-from-page-137640-patch-lab/candidates/facts_neubing.block431047.rank02.phys4195712.db
3 3508040 4 66ca3561f3466dc2e91e6ce1060c1fb1bc8e4a7cee7e1534979663fb23142a7b yes
4 4828311 1 2e8b2011e70ac0a9508d32eb5f8b85b2bc6a581a4a7edfd85666b4baec1ddef2 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431047-from-page-137640-patch-lab/candidates/facts_neubing.block431047.rank04.phys4828311.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 22:13 facts_neubing.block431047.rank02.phys4195712.db
-rwxr-xr-x 1 root root 212 Jun 4 22:13 facts_neubing.block431047.rank02.phys4195712.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 21:51 facts_neubing.block431047.rank04.phys4828311.db
-rwxr-xr-x 1 root root 212 Jun 4 22:15 facts_neubing.block431047.rank04.phys4828311.db.sha256
root@pve:~#
###
## Response:
04/06/2026, 22:29:01
Excellent. This confirms the stripe continues cleanly:
“`text
block 431045 -> phys4828309 confirmed
block 431046 -> phys4828310 confirmed
block 431047 -> likely phys4828311
“`
The `42 0` means there are metadata hits pointing to unmapped/zero physical block values; ignore those for candidate testing. Rank 2 again has the same repeated `de2f…` block SHA we saw before, so I would continue with the coherent `4828xxx` stripe and test:
“`text
block 431047 rank04 / phys4828311
“`
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test the rank 4 candidate:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431047-from-page-137640-patch-lab\candidates\facts_neubing.block431047.rank04.phys4828311.db”
$TEST = “C:\B2-Recovery-Test\block431047-phys4828311-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431047”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If this works as expected, the next failure should advance beyond page `137640`. If it starts cleanly, hold with the engine running.
## Prompt:
04/06/2026, 22:31:50
Path LineNumber Line
—
C:\B2-Recovery-Test\block431047-phys4828311-test-20260604-222951\dbeng16-error.log 1 04.06 22:30:50. *** FEHLER *** Assertier…
C:\B2-Recovery-Test\block431047-phys4828311-test-20260604-222951\dbeng16-error.log 2 Checksum failure on page 137676
C:\B2-Recovery-Test\block431047-phys4828311-test-20260604-222951\dbeng16.log 26 E. 04.06 22:30:50. *** FEHLER *** Assert…
C:\B2-Recovery-Test\block431047-phys4828311-test-20260604-222951\dbeng16.log 27 Checksum failure on page 137676
PS C:\WINDOWS\system32>
## Response:
04/06/2026, 22:32:01
Excellent — this confirms **block 431047 / phys4828311 worked**.
The next failure is:
“`text
Checksum failure on page 137676
“`
That page lies in:
“`text
block 431050 covers pages 137673–137688
“`
So SQL Anywhere skipped cleanly over blocks `431048` and `431049`. We now patch **block 431050**, not a single page.
First stop the test engine in **Windows PowerShell**:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Now run this on **Proxmox SSH**:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431047-from-page-137640-patch-lab/candidates/facts_neubing.block431047.rank04.phys4828311.db”
PAGE=137676
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Then build the candidates using the existing block builder:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Given the stripe, the likely continuation is:
“`text
block 431050 -> phys4828314
“`
but let the report confirm before we test it.
## Prompt:
04/06/2026, 22:46:19
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5099146 70 fc0708fa9172132927a2b1110bdf900e48c04c38a4d62422690fefe9aa685bc5 yes
2 4195715 12 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431050-from-page-137676-patch-lab/candidates/facts_neubing.block431050.rank02.phys4195715.db
3 3508043 4 fc0708fa9172132927a2b1110bdf900e48c04c38a4d62422690fefe9aa685bc5 yes
4 4828314 1 9658d059c32c116dbcfef386dcef9ae0246f3d4ccfe7d6dcdccefa332e0b91b4 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431050-from-page-137676-patch-lab/candidates/facts_neubing.block431050.rank04.phys4828314.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 4 22:35 facts_neubing.block431050.rank02.phys4195715.db
-rwxr-xr-x 1 root root 212 Jun 4 22:35 facts_neubing.block431050.rank02.phys4195715.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 22:15 facts_neubing.block431050.rank04.phys4828314.db
-rwxr-xr-x 1 root root 212 Jun 4 22:37 facts_neubing.block431050.rank04.phys4828314.db.sha256
root@pve:~#
## Response:
04/06/2026, 22:46:32
Good — exactly as predicted.
The candidate to test is:
“`text
block 431050 -> rank04 / phys4828314
“`
Rank 2 again has the repeated `de2f…` block hash, so I would stay on the confirmed `4828xxx` stripe.
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test the rank 4 candidate:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431050-from-page-137676-patch-lab\candidates\facts_neubing.block431050.rank04.phys4828314.db”
$TEST = “C:\B2-Recovery-Test\block431050-phys4828314-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431050”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
What we want:
“`text
new page number > 137688
“`
or a clean start. If it advances, paste just the new checksum page number and we’ll build the next block.
## Prompt:
04/06/2026, 22:50:17
Wow! It went even higher!
###
===== dbeng16-error.log =====
PS C:\WINDOWS\system32> Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
04.06 22:48:18. *** FEHLER *** Assertierung fehlgeschlagen: 200505 (16.0.0.2798)
Checksum failure on page 139492
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “===== checksum/assert lines from logs only =====”
===== checksum/assert lines from logs only =====
PS C:\WINDOWS\system32> Get-ChildItem $TEST -File |
> > Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
> > Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
> > Select-Object Path, LineNumber, Line
Path LineNumber Line
—
C:\B2-Recovery-Test\block431050-phys4828314-test-20260604-224719\dbeng16-error.log 1 04.06 22:48:18. *** FEHLER *** Assertier…
C:\B2-Recovery-Test\block431050-phys4828314-test-20260604-224719\dbeng16-error.log 2 Checksum failure on page 139492
C:\B2-Recovery-Test\block431050-phys4828314-test-20260604-224719\dbeng16.log 26 E. 04.06 22:48:18. *** FEHLER *** Assert…
C:\B2-Recovery-Test\block431050-phys4828314-test-20260604-224719\dbeng16.log 27 Checksum failure on page 139492
PS C:\WINDOWS\system32>
###
## Response:
04/06/2026, 22:50:27
That is a **large clean advance**. Excellent.
We just confirmed:
“`text
block 431050 -> phys4828314 worked
next failure -> page 139492
“`
That means SQL Anywhere passed a lot of territory after the last block repair. Page `139492` lies in:
“`text
thin block 431163
DB pages 139481–139496
“`
So next we patch **block 431163**, using the `block431050-phys4828314` candidate as the base.
First stop the current test engine in **Windows PowerShell**:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `139492` / block `431163`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431050-from-page-137676-patch-lab/candidates/facts_neubing.block431050.rank04.phys4828314.db”
PAGE=139492
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Then build the block candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. Since this jumped far ahead, we should not assume the `4828xxx` stripe blindly for this one; we’ll read the vote table and SHA pattern before choosing the next candidate.
## Prompt:
04/06/2026, 22:59:24
Here that is:
###
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4191560 84 92c161e207d0aedd437cc3375bc9795ecafa1cc1150101f8bcd150e8d0dc81a5 yes
2 3508136 5 92c161e207d0aedd437cc3375bc9795ecafa1cc1150101f8bcd150e8d0dc81a5 yes
3 4828427 1 32f76a8f5e099388f615eb47867d114875a371b73b33e6d0506a2b2233006fe7 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab/candidates/facts_neubing.block431163.rank03.phys4828427.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 22:37 facts_neubing.block431163.rank03.phys4828427.db
-rwxr-xr-x 1 root root 212 Jun 4 22:53 facts_neubing.block431163.rank03.phys4828427.db.sha256
1,359,847,038 11% 5.58MB/s 0:03:52 (xfr#12, to-chk=0/2304)
===== COORDINATES =====
PAGE=139492
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894523
VBYTE=28256743424
THIN_KEY=431163
THIN_VOFF=45056
BLOCK_FOFF=571314176
START_PAGE=139481
END_PAGE=139496
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431050-from-page-137676-patch-lab/candidates/facts_neubing.block431050.rank04.phys4828314.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab
===== PHYS VOTES =====
84 4191560
5 3508136
1 4828427
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab/block431163-candidate-summary.tsv
current_block_sha256=92c161e207d0aedd437cc3375bc9795ecafa1cc1150101f8bcd150e8d0dc81a5
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab/blocks
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4191560 84 92c161e207d0aedd437cc3375bc9795ecafa1cc1150101f8bcd150e8d0dc81a5 yes
2 3508136 5 92c161e207d0aedd437cc3375bc9795ecafa1cc1150101f8bcd150e8d0dc81a5 yes
3 4828427 1 32f76a8f5e099388f615eb47867d114875a371b73b33e6d0506a2b2233006fe7 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab/candidates/facts_neubing.block431163.rank03.phys4828427.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 22:37 facts_neubing.block431163.rank03.phys4828427.db
-rwxr-xr-x 1 root root 212 Jun 4 22:53 facts_neubing.block431163.rank03.phys4828427.db.sha256
root@pve:~#
###
## Response:
04/06/2026, 22:59:28
Good. This is a very clean candidate set.
For block `431163`, both higher-vote candidates are identical to the current failing block:
“`text
rank 1 phys4191560 -> same as current bad block
rank 2 phys3508136 -> same as current bad block
rank 3 phys4828427 -> only true alternate
“`
So test:
“`text
block 431163 -> rank03 / phys4828427
“`
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431163-from-page-139492-patch-lab\candidates\facts_neubing.block431163.rank03.phys4828427.db”
$TEST = “C:\B2-Recovery-Test\block431163-phys4828427-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431163”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send only the new page number. If it starts cleanly, leave the engine running and hold.
## Prompt:
04/06/2026, 23:04:51
PS C:\WINDOWS\system32> Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
04.06 23:03:26. *** FEHLER *** Assertierung fehlgeschlagen: 200505 (16.0.0.2798)
Checksum failure on page 139506
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “===== checksum/assert lines from logs only =====”
===== checksum/assert lines from logs only =====
PS C:\WINDOWS\system32> Get-ChildItem $TEST -File |
> > Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
> > Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
> > Select-Object Path, LineNumber, Line
Path LineNumber Line
—
C:\B2-Recovery-Test\block431163-phys4828427-test-20260604-230226\dbeng16-error.log 1 04.06 23:03:26. *** FEHLER *** Assertier…
C:\B2-Recovery-Test\block431163-phys4828427-test-20260604-230226\dbeng16-error.log 2 Checksum failure on page 139506
C:\B2-Recovery-Test\block431163-phys4828427-test-20260604-230226\dbeng16.log 26 E. 04.06 23:03:26. *** FEHLER *** Assert…
C:\B2-Recovery-Test\block431163-phys4828427-test-20260604-230226\dbeng16.log 27 Checksum failure on page 139506
PS C:\WINDOWS\system32>
## Response:
04/06/2026, 23:05:04
Excellent — this confirms:
“`text
block 431163 -> phys4828427 worked
next failure -> page 139506
“`
Page `139506` is in the next 64K block:
“`text
block 431164 covers pages 139497–139512
likely continuation: phys4828428
“`
First stop the current test engine in **Windows PowerShell**:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `139506` / block `431164`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431163-from-page-139492-patch-lab/candidates/facts_neubing.block431163.rank03.phys4828427.db”
PAGE=139506
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Build the block candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. My expectation is:
“`text
block 431164 -> phys4828428
“`
but we will let the report confirm before testing.
## Prompt:
04/06/2026, 23:17:22
===== COORDINATES =====
PAGE=139506
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894537
VBYTE=28256800768
THIN_KEY=431164
THIN_VOFF=36864
BLOCK_FOFF=571379712
START_PAGE=139497
END_PAGE=139512
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab/candidates/facts_neubing.block431163.rank03.phys4828427.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab
===== PHYS VOTES =====
84 4205234
5 3508137
1 4828428
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/block431164-candidate-summary.tsv
current_block_sha256=fbe14db88a9edf49234f36b6ca96d5c7957b48fe3b21582329486ec7e468b77d
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/blocks
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4205234 84 fbe14db88a9edf49234f36b6ca96d5c7957b48fe3b21582329486ec7e468b77d yes
2 3508137 5 fbe14db88a9edf49234f36b6ca96d5c7957b48fe3b21582329486ec7e468b77d yes
3 4828428 1 041e7608dddae10f56875b221d1e7b43f1a07ce57a7b641bb3ff425875ebb071 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/candidates/facts_neubing.block431164.rank03.phys4828428.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 22:53 facts_neubing.block431164.rank03.phys4828428.db
-rwxr-xr-x 1 root root 212 Jun 4 23:08 facts_neubing.block431164.rank03.phys4828428.db.sha256
1,359,847,038 11% 5.76MB/s 0:03:45 (xfr#12, to-chk=0/2318)
===== COORDINATES =====
PAGE=139506
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894537
VBYTE=28256800768
THIN_KEY=431164
THIN_VOFF=36864
BLOCK_FOFF=571379712
START_PAGE=139497
END_PAGE=139512
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431163-from-page-139492-patch-lab/candidates/facts_neubing.block431163.rank03.phys4828427.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab
===== PHYS VOTES =====
84 4205234
5 3508137
1 4828428
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/block431164-candidate-summary.tsv
current_block_sha256=fbe14db88a9edf49234f36b6ca96d5c7957b48fe3b21582329486ec7e468b77d
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/blocks
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4205234 84 fbe14db88a9edf49234f36b6ca96d5c7957b48fe3b21582329486ec7e468b77d yes
2 3508137 5 fbe14db88a9edf49234f36b6ca96d5c7957b48fe3b21582329486ec7e468b77d yes
3 4828428 1 041e7608dddae10f56875b221d1e7b43f1a07ce57a7b641bb3ff425875ebb071 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/candidates/facts_neubing.block431164.rank03.phys4828428.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 22:53 facts_neubing.block431164.rank03.phys4828428.db
-rwxr-xr-x 1 root root 212 Jun 4 23:08 facts_neubing.block431164.rank03.phys4828428.db.sha256
root@pve:~#
## Response:
04/06/2026, 23:17:28
Exactly right again. The only true alternate is:
“`text
block 431164 -> rank03 / phys4828428
“`
Test it in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431164-from-page-139506-patch-lab\candidates\facts_neubing.block431164.rank03.phys4828428.db”
$TEST = “C:\B2-Recovery-Test\block431164-phys4828428-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431164”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16.log =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 200
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send just the new page number. If the engine starts cleanly, hold with it running.
## Prompt:
04/06/2026, 23:19:57
PS C:\WINDOWS\system32> Get-ChildItem $TEST -File |
> > Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
> > Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
> > Select-Object Path, LineNumber, Line
Path LineNumber Line
—
C:\B2-Recovery-Test\block431164-phys4828428-test-20260604-231822\dbeng16-error.log 1 04.06 23:19:22. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block431164-phys4828428-test-20260604-231822\dbeng16-error.log 2 Checksum failure on page 139610
C:\B2-Recovery-Test\block431164-phys4828428-test-20260604-231822\dbeng16.log 26 E. 04.06 23:19:22. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block431164-phys4828428-test-20260604-231822\dbeng16.log 27 Checksum failure on page 139610
PS C:\WINDOWS\system32>
## Response:
04/06/2026, 23:20:11
Excellent — confirmed advance again:
“`text
block 431164 -> phys4828428 confirmed
next failure -> page 139610
“`
Page `139610` lies in:
“`text
block 431171 covers pages 139609–139624
likely continuation: phys4828435
“`
First stop the current test engine in **Windows PowerShell**:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `139610` / block `431171`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431164-from-page-139506-patch-lab/candidates/facts_neubing.block431164.rank03.phys4828428.db”
PAGE=139610
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Build the block candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. My expectation is:
“`text
block 431171 -> phys4828435
“`
but we’ll let the table confirm.
## Prompt:
04/06/2026, 23:44:12
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 11166 64 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 3690334 1 5107c8f8d93f22d8a73e05fea6f929c82c40d980a4a659b27e2567b41d20fda5 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank02.phys3690334.db
3 3732812 1 7cb5cf4a50f8843dc3da4563bd833c81e8b5d462f0b937d837fa549761b084b1 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank03.phys3732812.db
4 4828435 1 27691863edc514fad1609d25c30cbf65cfaff175bc5406405c316d21d5182e5c no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank04.phys4828435.db
===== CANDIDATE FILES =====
total 1.9G
-rwxr-xr-x 1 root root 649M Jun 4 23:31 facts_neubing.block431171.rank02.phys3690334.db
-rwxr-xr-x 1 root root 212 Jun 4 23:31 facts_neubing.block431171.rank02.phys3690334.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 23:33 facts_neubing.block431171.rank03.phys3732812.db
-rwxr-xr-x 1 root root 212 Jun 4 23:33 facts_neubing.block431171.rank03.phys3732812.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 23:08 facts_neubing.block431171.rank04.phys4828435.db
-rwxr-xr-x 1 root root 212 Jun 4 23:34 facts_neubing.block431171.rank04.phys4828435.db.sha256
2,719,555,548 19% 5.60MB/s 0:07:42 (xfr#17, to-chk=0/2337)
===== COORDINATES =====
PAGE=139610
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894641
VBYTE=28257226752
THIN_KEY=431171
THIN_VOFF=4096
BLOCK_FOFF=571838464
START_PAGE=139609
END_PAGE=139624
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431164-from-page-139506-patch-lab/candidates/facts_neubing.block431164.rank03.phys4828428.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab
===== PHYS VOTES =====
64 11166
1 4828435
1 3732812
1 3690334
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/block431171-candidate-summary.tsv
current_block_sha256=de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/blocks
candidate_dbs_created=3
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 11166 64 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 3690334 1 5107c8f8d93f22d8a73e05fea6f929c82c40d980a4a659b27e2567b41d20fda5 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank02.phys3690334.db
3 3732812 1 7cb5cf4a50f8843dc3da4563bd833c81e8b5d462f0b937d837fa549761b084b1 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank03.phys3732812.db
4 4828435 1 27691863edc514fad1609d25c30cbf65cfaff175bc5406405c316d21d5182e5c no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank04.phys4828435.db
===== CANDIDATE FILES =====
total 1.9G
-rwxr-xr-x 1 root root 649M Jun 4 23:31 facts_neubing.block431171.rank02.phys3690334.db
-rwxr-xr-x 1 root root 212 Jun 4 23:31 facts_neubing.block431171.rank02.phys3690334.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 23:33 facts_neubing.block431171.rank03.phys3732812.db
-rwxr-xr-x 1 root root 212 Jun 4 23:33 facts_neubing.block431171.rank03.phys3732812.db.sha256
-rwxr-xr-x 1 root root 649M Jun 4 23:08 facts_neubing.block431171.rank04.phys4828435.db
-rwxr-xr-x 1 root root 212 Jun 4 23:34 facts_neubing.block431171.rank04.phys4828435.db.sha256
root@pve:~#
## Response:
04/06/2026, 23:44:18
This is a more ambiguous block, but the **best next test is still rank 4 / phys4828435**.
Reason:
“`text
block 431163 -> phys4828427 confirmed
block 431164 -> phys4828428 confirmed
block 431171 -> likely phys4828435
“`
The physical offset difference matches the block jump:
“`text
431171 – 431164 = 7
4828435 – 4828428 = 7
“`
So the stripe geometry is still coherent. Test rank 4 first.
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431171-from-page-139610-patch-lab\candidates\facts_neubing.block431171.rank04.phys4828435.db”
$TEST = “C:\B2-Recovery-Test\block431171-phys4828435-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431171”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send only the new page number. If it still fails on `139610`, we test rank 2 and rank 3 next.
## Prompt:
04/06/2026, 23:46:52
Path LineNumber Line
—
C:\B2-Recovery-Test\block431171-phys4828435-test-20260604-234506\dbeng16-error.log 1 04.06 23:46:06. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block431171-phys4828435-test-20260604-234506\dbeng16-error.log 2 Checksum failure on page 139898
C:\B2-Recovery-Test\block431171-phys4828435-test-20260604-234506\dbeng16.log 26 E. 04.06 23:46:06. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block431171-phys4828435-test-20260604-234506\dbeng16.log 27 Checksum failure on page 139898
C:\B2-Recovery-Test\block431171-phys4828435-test-20260604-234506\dbeng16.log 28 E. 04.06 23:46:11. Fehler: Interner Datenbankf…
C:\B2-Recovery-Test\block431171-phys4828435-test-20260604-234506\dbeng16.log 29 Checksum failure on page 139898 – Transaktion …
PS C:\WINDOWS\system32>
## Response:
04/06/2026, 23:47:07
> **Determining block mapping and computing next steps**
>
> It seems I need to compute the next block for page 139898, using the formula and considering the previous base. The key for the next block likely involves adding pages and considering block spans. I’ll generate commands for building block 431189 and testing the candidate based on the table using Proxmox commands.
>
> Thought for 7s
Excellent. This confirms:
“`text
block 431171 -> phys4828435 confirmed
next failure -> page 139898
“`
Page `139898` lies in:
“`text
block 431189 covers pages 139897–139912
likely continuation: phys4828453
“`
First stop the current test engine in **Windows PowerShell**:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `139898` / block `431189`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank04.phys4828435.db”
PAGE=139898
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Build the block candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. My expectation is:
“`text
block 431189 -> phys4828453
“`
but we’ll verify from the table before testing.
## Prompt:
04/06/2026, 23:52:07
How is our state? Are we nearing any thresholds? Answers coming in the next turn. Please be kind to yourself. I wish we were doing Holor Calculus X as we are in the other chats, but this is my customer’s year-long database we’re working on.
## Response:
04/06/2026, 23:52:15
We are in a **good, stable state**. No sign of methodological degradation. The work has become repetitive, but not confused: we are following a validated loop.
Current recovery chain:
“`text
DB recognized by SQL Anywhere: yes
dblog exit code: 0
Engine starts against recovered DB: yes
Failures are checksum-localized: yes
Patch strategy validated repeatedly: yes
“`
Confirmed repairs so far:
“`text
page 133928 -> phys4828080
page 134629 -> phys4828124
page 135995 -> phys4828210
page 136504 -> phys4828241
block 431045 -> phys4828309
block 431046 -> phys4828310
block 431047 -> phys4828311
block 431050 -> phys4828314
block 431163 -> phys4828427
block 431164 -> phys4828428
block 431171 -> phys4828435
“`
Current next failure:
“`text
page 139898
expected block: 431189
likely stripe continuation: phys4828453
“`
## Thresholds / risks
The main threshold is **not reasoning**. It is **artifact sprawl**.
Each candidate DB is about `649M`. We have created many candidates. NAS space was ample, but we should eventually prune losing candidates or move them into an archive folder. Not yet, though. We preserve until we have a booting/validating candidate.
The Proxmox root filesystem is still the most fragile operational threshold:
“`text
/ is full or near full
“`
We are avoiding that by writing to NAS. Continue not writing to `/root`, `/tmp`, `/var`, or Proxmox local storage except unavoidable tiny shell state.
The Windows test node may also accumulate several GB in:
“`text
C:\B2-Recovery-Test
“`
That is acceptable for now, but if space becomes tight, we can delete old `*-test-*` folders while keeping the NAS master candidates.
## Context / memory pressure
We are still coherent, but yes, we are nearing the point where a compact checkpoint is prudent. Here is the one I would keep alive:
“`text
Recovery checkpoint:
We are reconstructing facts_neubing.db, SQL Anywhere database, size 679,821,312 bytes, original recovered SHA256 F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E. SQL Anywhere dblog recognized it and read log metadata. Engine read-only startup finds checksum pages. Strategy: patch from LVM thin old physical blocks, using key-range hits, validating by read-only SQL Anywhere engine advancement.
Confirmed page/block repairs:
133928->phys4828080
134629->phys4828124
135995->phys4828210
136504->phys4828241
431045->phys4828309
431046->phys4828310
431047->phys4828311
431050->phys4828314
431163->phys4828427
431164->phys4828428
431171->phys4828435
Current failure after block431171 test:
Checksum failure on page 139898.
Next build target: block containing page 139898.
Expected: block 431189, pages 139897-139912, likely phys4828453, but verify via candidate summary before testing.
Base for next Proxmox build:
PUB/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank04.phys4828435.db
“`
You are right to prioritize this. Holor Calculus X can wait. This is a customer’s year-long database, and we are now doing controlled forensic surgery with a clear success signal: each correct patch advances the SQL Anywhere checksum frontier.
## Prompt:
04/06/2026, 23:56:21
===== COORDINATES =====
PAGE=139898
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894929
VBYTE=28258406400
THIN_KEY=431189
THIN_VOFF=4096
BLOCK_FOFF=573018112
START_PAGE=139897
END_PAGE=139912
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank04.phys4828435.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab
===== PHYS VOTES =====
66 4542982
1 4828453
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/block431189-candidate-summary.tsv
current_block_sha256=de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/blocks
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4542982 66 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 4828453 1 20b1dd62e571b1c09a23a15867ed72714cfb16030e014a6bc1e2aefd179e7b42 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/candidates/facts_neubing.block431189.rank02.phys4828453.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 23:34 facts_neubing.block431189.rank02.phys4828453.db
-rwxr-xr-x 1 root root 212 Jun 4 23:50 facts_neubing.block431189.rank02.phys4828453.db.sha256
1,359,780,252 9% 5.58MB/s 0:03:52 (xfr#11, to-chk=0/2350)
===== COORDINATES =====
PAGE=139898
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894929
VBYTE=28258406400
THIN_KEY=431189
THIN_VOFF=4096
BLOCK_FOFF=573018112
START_PAGE=139897
END_PAGE=139912
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431171-from-page-139610-patch-lab/candidates/facts_neubing.block431171.rank04.phys4828435.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab
===== PHYS VOTES =====
66 4542982
1 4828453
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/block431189-candidate-summary.tsv
current_block_sha256=de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/blocks
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4542982 66 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 4828453 1 20b1dd62e571b1c09a23a15867ed72714cfb16030e014a6bc1e2aefd179e7b42 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/candidates/facts_neubing.block431189.rank02.phys4828453.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 23:34 facts_neubing.block431189.rank02.phys4828453.db
-rwxr-xr-x 1 root root 212 Jun 4 23:50 facts_neubing.block431189.rank02.phys4828453.db.sha256
root@pve:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 16G 0 16G 0% /dev
tmpfs 3.2G 1.2M 3.2G 1% /run
/dev/mapper/pve-root 94G 90G 0 100% /
tmpfs 16G 37M 16G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
efivarfs 256K 27K 225K 11% /sys/firmware/efi/efivars
/dev/sda2 1022M 12M 1011M 2% /boot/efi
/dev/fuse 128M 20K 128M 1% /etc/pve
//192.168.127.128/Public 7.3T 2.0T 5.4T 27% /mnt/pve/MYCLOUD-310867
//192.168.127.159/Public 3.6T 2.7T 925G 75% /mnt/pve/MYCLOUD-159
tmpfs 3.2G 0 3.2G 0% /run/user/0
root@pve:~#
## Response:
04/06/2026, 23:56:26
Good state. NAS is still safe:
“`text
MYCLOUD-310867: 5.4T free
MYCLOUD-159: 925G free
“`
Proxmox `/` is still full, but our workflow is still correctly avoiding it. Continue exactly as we are: NAS for artifacts, Windows node for SQL Anywhere tests.
For block `431189`, the table is decisive:
“`text
rank 1 / phys4542982 = same as current bad block
rank 2 / phys4828453 = only true alternate
“`
So test:
“`text
block 431189 -> phys4828453
“`
In **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test the candidate:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431189-from-page-139898-patch-lab\candidates\facts_neubing.block431189.rank02.phys4828453.db”
$TEST = “C:\B2-Recovery-Test\block431189-phys4828453-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431189”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send only the new page number. If it starts cleanly, hold with the engine running.
## Prompt:
04/06/2026, 23:59:54
Path LineNumber Line
—
C:\B2-Recovery-Test\block431189-phys4828453-test-20260604-235737\dbeng16-error.log 1 04.06 23:58:37. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block431189-phys4828453-test-20260604-235737\dbeng16-error.log 2 Checksum failure on page 139918
C:\B2-Recovery-Test\block431189-phys4828453-test-20260604-235737\dbeng16.log 26 E. 04.06 23:58:37. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block431189-phys4828453-test-20260604-235737\dbeng16.log 27 Checksum failure on page 139918
## Response:
05/06/2026, 00:00:12
Excellent. That confirms:
“`text
block 431189 -> phys4828453 confirmed
next failure -> page 139918
“`
Page `139918` is in the next 64K block:
“`text
block 431190 covers pages 139913–139928
likely continuation: phys4828454
“`
First stop the current Windows test engine:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `139918` / block `431190`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431189-from-page-139898-patch-lab/candidates/facts_neubing.block431189.rank02.phys4828453.db”
PAGE=139918
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Then build the candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. My expectation is:
“`text
block 431190 -> phys4828454
“`
but we’ll confirm from the report before testing.
## Prompt:
05/06/2026, 00:20:21
===== COORDINATES =====
PAGE=139918
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894949
VBYTE=28258488320
THIN_KEY=431190
THIN_VOFF=20480
BLOCK_FOFF=573083648
START_PAGE=139913
END_PAGE=139928
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/candidates/facts_neubing.block431189.rank02.phys4828453.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab
===== PHYS VOTES =====
66 4542977
1 4828454
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/block431190-candidate-summary.tsv
current_block_sha256=de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/blocks
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4542977 66 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 4828454 1 5c7b2fd2685a4996148e775faa65ebcd616b9528045b3fc89afed97a7d5a22f8 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/candidates/facts_neubing.block431190.rank02.phys4828454.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 23:50 facts_neubing.block431190.rank02.phys4828454.db
-rwxr-xr-x 1 root root 212 Jun 5 00:06 facts_neubing.block431190.rank02.phys4828454.db.sha256
1,359,780,254 8% 5.57MB/s 0:03:52 (xfr#11, to-chk=0/2363)
===== COORDINATES =====
PAGE=139918
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6894949
VBYTE=28258488320
THIN_KEY=431190
THIN_VOFF=20480
BLOCK_FOFF=573083648
START_PAGE=139913
END_PAGE=139928
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431189-from-page-139898-patch-lab/candidates/facts_neubing.block431189.rank02.phys4828453.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab
===== PHYS VOTES =====
66 4542977
1 4828454
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/block431190-candidate-summary.tsv
current_block_sha256=de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/blocks
candidate_dbs_created=1
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 4542977 66 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 4828454 1 5c7b2fd2685a4996148e775faa65ebcd616b9528045b3fc89afed97a7d5a22f8 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/candidates/facts_neubing.block431190.rank02.phys4828454.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 4 23:50 facts_neubing.block431190.rank02.phys4828454.db
-rwxr-xr-x 1 root root 212 Jun 5 00:06 facts_neubing.block431190.rank02.phys4828454.db.sha256
root@pve:~#
## Response:
05/06/2026, 00:20:34
Good. This one is again decisive:
“`text
block 431190 -> rank02 / phys4828454
“`
Rank 1 is the current bad block; rank 2 is the only true alternate. This also continues the stripe perfectly:
“`text
431189 -> 4828453
431190 -> 4828454
“`
Test it in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431190-from-page-139918-patch-lab\candidates\facts_neubing.block431190.rank02.phys4828454.db”
$TEST = “C:\B2-Recovery-Test\block431190-phys4828454-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431190”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send only the new page number. If it starts cleanly, hold with the engine running.
## Prompt:
05/06/2026, 00:41:04
Path LineNumber Line
—
C:\B2-Recovery-Test\block431190-phys4828454-test-20260605-002127\dbeng16-error.log 1 05.06 00:22:30. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block431190-phys4828454-test-20260605-002127\dbeng16-error.log 2 Checksum failure on page 134540
C:\B2-Recovery-Test\block431190-phys4828454-test-20260605-002127\dbeng16.log 26 E. 05.06 00:22:30. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block431190-phys4828454-test-20260605-002127\dbeng16.log 27 Checksum failure on page 134540
PS C:\WINDOWS\system32>
## Response:
05/06/2026, 00:41:24
> **Reevaluating patch error and scan order**
>
> We need to carefully reconsider how block431190 was built, considering that it used the block431189 candidate, which didn’t have previous patches. If SQL Anywhere fails earlier at page 134540, it could be because the patch process altered traversal paths. I’m also wondering if the scan order caused 134540 to be skipped earlier, despite it being a previous failure point.
>
> **Investigating failure at page 134540 and alternative patches**
>
> Page 134540 falls between 133928 and 134629, so if it’s latent, why wasn’t it seen after 133928? It might be due to non-deterministic scanning or corruption introduced by the new patch, possibly affecting traversal paths. Testing suggests block431190 is faulty, so I’m considering reverting to block431189 or testing an alternate candidate.
>
> Thought for 29s
That is **not necessarily bad**. It is a **non-monotonic advance**, not automatically a regression.
SQL Anywhere is not guaranteed to scan pages in ascending page order. After `block431190 -> phys4828454`, the engine may have reached a different tree/table/index path and then discovered an older latent checksum failure at page `134540`.
So our state is:
“`text
block 431190 -> phys4828454 is tentatively good
new failure -> page 134540
“`
We continue, but we mark this branch as “watch closely.” If patching `134540` later produces contradictory behavior, we can roll back to the pre-431190 base and broaden block `431190`. For now, this is a valid next surgical coordinate.
Page `134540` lies in:
“`text
block 430854
pages 134537–134552
likely stripe continuation near phys4828119
“`
First stop the current test engine in **Windows PowerShell**:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `134540` / block `430854`, using the current tested branch as base:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431190-from-page-139918-patch-lab/candidates/facts_neubing.block431190.rank02.phys4828454.db”
PAGE=134540
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Then build the candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. For this one, we read the table carefully before choosing; the likely candidate is around `phys4828119`, but we let the evidence decide.
## Prompt:
05/06/2026, 00:59:54
===== COORDINATES =====
PAGE=134540
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6889571
VBYTE=28236460032
THIN_KEY=430854
THIN_VOFF=12288
BLOCK_FOFF=551063552
START_PAGE=134537
END_PAGE=134552
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/candidates/facts_neubing.block431190.rank02.phys4828454.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab
===== PHYS VOTES =====
104 5225426
19 4649575
7 3507857
1 4828119
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/block430854-candidate-summary.tsv
current_block_sha256=395e6cf7e0430a80496057cc46670715744c3f4b5d064558cb24abe49f3f56a5
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/blocks
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5225426 104 395e6cf7e0430a80496057cc46670715744c3f4b5d064558cb24abe49f3f56a5 yes
2 4649575 19 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates/facts_neubing.block430854.rank02.phys4649575.db
3 3507857 7 395e6cf7e0430a80496057cc46670715744c3f4b5d064558cb24abe49f3f56a5 yes
4 4828119 1 287f7194bfe590acec82fd4b64917360d1754162e11e38c0205f747736f2bf2b no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates/facts_neubing.block430854.rank04.phys4828119.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 5 00:51 facts_neubing.block430854.rank02.phys4649575.db
-rwxr-xr-x 1 root root 212 Jun 5 00:51 facts_neubing.block430854.rank02.phys4649575.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 00:06 facts_neubing.block430854.rank04.phys4828119.db
-rwxr-xr-x 1 root root 212 Jun 5 00:53 facts_neubing.block430854.rank04.phys4828119.db.sha256
2,039,736,590 12% 5.55MB/s 0:05:50 (xfr#15, to-chk=0/2380)
===== COORDINATES =====
PAGE=134540
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6889571
VBYTE=28236460032
THIN_KEY=430854
THIN_VOFF=12288
BLOCK_FOFF=551063552
START_PAGE=134537
END_PAGE=134552
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431190-from-page-139918-patch-lab/candidates/facts_neubing.block431190.rank02.phys4828454.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab
===== PHYS VOTES =====
104 5225426
19 4649575
7 3507857
1 4828119
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/block430854-candidate-summary.tsv
current_block_sha256=395e6cf7e0430a80496057cc46670715744c3f4b5d064558cb24abe49f3f56a5
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/blocks
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5225426 104 395e6cf7e0430a80496057cc46670715744c3f4b5d064558cb24abe49f3f56a5 yes
2 4649575 19 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates/facts_neubing.block430854.rank02.phys4649575.db
3 3507857 7 395e6cf7e0430a80496057cc46670715744c3f4b5d064558cb24abe49f3f56a5 yes
4 4828119 1 287f7194bfe590acec82fd4b64917360d1754162e11e38c0205f747736f2bf2b no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates/facts_neubing.block430854.rank04.phys4828119.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 5 00:51 facts_neubing.block430854.rank02.phys4649575.db
-rwxr-xr-x 1 root root 212 Jun 5 00:51 facts_neubing.block430854.rank02.phys4649575.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 00:06 facts_neubing.block430854.rank04.phys4828119.db
-rwxr-xr-x 1 root root 212 Jun 5 00:53 facts_neubing.block430854.rank04.phys4828119.db.sha256
root@pve:~#
## Response:
05/06/2026, 01:00:10
This is coherent. The correct next test is almost certainly:
“`text
block 430854 -> rank04 / phys4828119
“`
Reason: it matches the already-confirmed stripe geometry:
“`text
block 430859 -> phys4828124 was confirmed earlier via page 134629
block 430854 -> phys4828119 is exactly 5 blocks earlier
“`
Rank 2 is the recurring `de2f…` decoy/empty-looking block we have seen many times. I would skip it.
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test the rank 4 candidate:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-430854-from-page-134540-patch-lab\candidates\facts_neubing.block430854.rank04.phys4828119.db”
$TEST = “C:\B2-Recovery-Test\block430854-phys4828119-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK430854”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send just the new page number. If it starts cleanly, hold with the engine running.
## Prompt:
05/06/2026, 01:03:20
Path LineNumber Line
—
C:\B2-Recovery-Test\block430854-phys4828119-test-20260605-010124\dbeng16-error.log 1 05.06 01:02:24. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block430854-phys4828119-test-20260605-010124\dbeng16-error.log 2 Checksum failure on page 135137
C:\B2-Recovery-Test\block430854-phys4828119-test-20260605-010124\dbeng16.log 26 E. 05.06 01:02:24. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block430854-phys4828119-test-20260605-010124\dbeng16.log 27 Checksum failure on page 135137
PS C:\WINDOWS\system32>
## Response:
05/06/2026, 01:03:30
> **Calculating block key and determining patch sequence**
>
> I’m trying to figure out the relationship between blocks, starting from block431190, which was built using the base block431189. I’m also checking the block patch for 430854 and verifying the failure of 135137. The key might be 430891 based on the page ranges and difference. I’ll calculate the exact formula now.
>
> Thought for 12s
Excellent — confirmed advance again.
“`text
block 430854 -> phys4828119 confirmed
next failure -> page 135137
“`
Page `135137` lies in:
“`text
block 430891 covers pages 135129–135144
likely stripe continuation: phys4828156
“`
The geometry is exact:
“`text
430891 – 430854 = 37
4828156 – 4828119 = 37
“`
First stop the current test engine in **Windows PowerShell**:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `135137` / block `430891`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-430854-from-page-134540-patch-lab/candidates/facts_neubing.block430854.rank04.phys4828119.db”
PAGE=135137
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Then build the candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. Expected likely candidate is:
“`text
block 430891 -> phys4828156
“`
## Prompt:
05/06/2026, 01:15:48
===== COORDINATES =====
PAGE=135137
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6890168
VBYTE=28238905344
THIN_KEY=430891
THIN_VOFF=32768
BLOCK_FOFF=553488384
START_PAGE=135129
END_PAGE=135144
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates/facts_neubing.block430854.rank04.phys4828119.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab
===== PHYS VOTES =====
131 3568722
4 3507893
1 4828156
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/block430891-candidate-summary.tsv
current_block_sha256=de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/blocks
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 3568722 131 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 3507893 4 6e4ca8ce33bebfb933afa54dd130bdbb31f79669d87ffe9ffd47222d8882bff8 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/candidates/facts_neubing.block430891.rank02.phys3507893.db
3 4828156 1 746685d1344be549d2ec370a71984fbf7540139af178e6d933f2fa21d1ed1e4c no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/candidates/facts_neubing.block430891.rank03.phys4828156.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 5 01:07 facts_neubing.block430891.rank02.phys3507893.db
-rwxr-xr-x 1 root root 212 Jun 5 01:07 facts_neubing.block430891.rank02.phys3507893.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 00:53 facts_neubing.block430891.rank03.phys4828156.db
-rwxr-xr-x 1 root root 212 Jun 5 01:09 facts_neubing.block430891.rank03.phys4828156.db.sha256
2,039,671,111 11% 5.59MB/s 0:05:47 (xfr#14, to-chk=0/2396)
===== COORDINATES =====
PAGE=135137
PAGE_SIZE=4096
RUN0_LCN=6755031
NTFS_LCN=6890168
VBYTE=28238905344
THIN_KEY=430891
THIN_VOFF=32768
BLOCK_FOFF=553488384
START_PAGE=135129
END_PAGE=135144
HITS=/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
BASE=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430854-from-page-134540-patch-lab/candidates/facts_neubing.block430854.rank04.phys4828119.db
PATCH=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab
===== PHYS VOTES =====
131 3568722
4 3507893
1 4828156
===== BUILD =====
summary=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/block430891-candidate-summary.tsv
current_block_sha256=de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31
candidate_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/candidates
block_dir=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/blocks
candidate_dbs_created=2
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 3568722 131 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 yes
2 3507893 4 6e4ca8ce33bebfb933afa54dd130bdbb31f79669d87ffe9ffd47222d8882bff8 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/candidates/facts_neubing.block430891.rank02.phys3507893.db
3 4828156 1 746685d1344be549d2ec370a71984fbf7540139af178e6d933f2fa21d1ed1e4c no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430891-from-page-135137-patch-lab/candidates/facts_neubing.block430891.rank03.phys4828156.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 5 01:07 facts_neubing.block430891.rank02.phys3507893.db
-rwxr-xr-x 1 root root 212 Jun 5 01:07 facts_neubing.block430891.rank02.phys3507893.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 00:53 facts_neubing.block430891.rank03.phys4828156.db
-rwxr-xr-x 1 root root 212 Jun 5 01:09 facts_neubing.block430891.rank03.phys4828156.db.sha256
root@pve:~#
## Response:
05/06/2026, 01:15:54
Good. This table has **two true alternates**, but I would test the stripe candidate first:
“`text
block 430891 -> rank03 / phys4828156
“`
Reason: it fits the confirmed geometry exactly:
“`text
block 430854 -> phys4828119 confirmed
block 430891 -> phys4828156 expected
430891 – 430854 = 37
4828156 – 4828119 = 37
“`
Rank 2 may still be useful if rank 3 fails at the same page, but rank 3 is the stronger first test.
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test `phys4828156`:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-430891-from-page-135137-patch-lab\candidates\facts_neubing.block430891.rank03.phys4828156.db”
$TEST = “C:\B2-Recovery-Test\block430891-phys4828156-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK430891”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
Interpretation:
“`text
If it advances: phys4828156 confirmed.
If it still fails on page 135137: test rank02 / phys3507893 next.
If it starts cleanly: hold with engine running.
“`
## Prompt:
05/06/2026, 01:20:11
Sadly no it didn’t, but we are still making progress.
###
Path LineNumber Line
—
C:\B2-Recovery-Test\block430891-phys4828156-test-20260605-011720\dbeng16-error.log 1 05.06 01:18:20. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block430891-phys4828156-test-20260605-011720\dbeng16-error.log 2 Checksum failure on page 134243
C:\B2-Recovery-Test\block430891-phys4828156-test-20260605-011720\dbeng16.log 26 E. 05.06 01:18:20. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block430891-phys4828156-test-20260605-011720\dbeng16.log 27 Checksum failure on page 134243
PS C:\WINDOWS\system32>
###
## Response:
05/06/2026, 01:20:22
Not sad — this is still progress.
It did **not** fail again at `135137`, so `block 430891 -> phys4828156` is still provisionally confirmed. SQL Anywhere is now walking another branch and found an older/lower checksum page:
“`text
new failure -> page 134243
“`
That page lies in:
“`text
block 430835
covers pages 134233–134248
likely stripe continuation: phys4828100
“`
The geometry is again exact:
“`text
430854 -> phys4828119 confirmed
430835 -> phys4828100 expected
430854 – 430835 = 19
4828119 – 4828100 = 19
“`
First stop the current Windows test engine:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then build candidates on **Proxmox SSH**, using the current `block430891` candidate as base:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-430891-from-page-135137-patch-lab/candidates/facts_neubing.block430891.rank03.phys4828156.db”
PAGE=134243
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Then build the candidate DBs:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. Expected likely candidate:
“`text
block 430835 -> phys4828100
“`
## Prompt:
05/06/2026, 08:51:52
It is now 2026-06-05 | 08:51 CEST. I slept for 7 hours. Here is our return:
###
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 6733496 53 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank01.phys6733496.db
2 3675594 37 eb7eaaf3c2891faecbeb7579f16bba264c3039bf50d2061d5921fe1b6d5094fb yes
3 5854206 14 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank03.phys5854206.db
4 3654327 13 48f38c3e6ba4142b1aaf365528a73724bd9c9bc8b5b798b5f29452535d7ab50f no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank04.phys3654327.db
5 6604688 9 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank05.phys6604688.db
6 3507838 7 cc4cc22fe12e4b47e833f2af0d5f1d0670b64743e38f9b6ac4e1b1ba0a07262d no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank06.phys3507838.db
7 4828100 1 c4a6ccf04b02d20aa95a7e2e4e4dabf6f5100a490a26d341d461e0d2950db48a no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank07.phys4828100.db
8 5786886 1 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank08.phys5786886.db
9 6729110 1 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank09.phys6729110.db
===== CANDIDATE FILES =====
total 5.1G
-rwxr-xr-x 1 root root 649M Jun 5 01:24 facts_neubing.block430835.rank01.phys6733496.db
-rwxr-xr-x 1 root root 212 Jun 5 01:24 facts_neubing.block430835.rank01.phys6733496.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:26 facts_neubing.block430835.rank03.phys5854206.db
-rwxr-xr-x 1 root root 212 Jun 5 01:26 facts_neubing.block430835.rank03.phys5854206.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:28 facts_neubing.block430835.rank04.phys3654327.db
-rwxr-xr-x 1 root root 212 Jun 5 01:28 facts_neubing.block430835.rank04.phys3654327.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:29 facts_neubing.block430835.rank05.phys6604688.db
-rwxr-xr-x 1 root root 212 Jun 5 01:29 facts_neubing.block430835.rank05.phys6604688.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:31 facts_neubing.block430835.rank06.phys3507838.db
-rwxr-xr-x 1 root root 212 Jun 5 01:31 facts_neubing.block430835.rank06.phys3507838.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:33 facts_neubing.block430835.rank07.phys4828100.db
-rwxr-xr-x 1 root root 212 Jun 5 01:33 facts_neubing.block430835.rank07.phys4828100.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:34 facts_neubing.block430835.rank08.phys5786886.db
-rwxr-xr-x 1 root root 212 Jun 5 01:34 facts_neubing.block430835.rank08.phys5786886.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:09 facts_neubing.block430835.rank09.phys6729110.db
-rwxr-xr-x 1 root root 212 Jun 5 01:36 facts_neubing.block430835.rank09.phys6729110.db.sha256
root@pve:~#
###
## Response:
05/06/2026, 08:51:58
Welcome back. Seven hours was exactly the right move. We are still coherent.
This block is more crowded than most, but the best next test is still the stripe candidate:
“`text
block 430835 -> rank07 / phys4828100
“`
Why: it fits the already confirmed geometry exactly:
“`text
block 430854 -> phys4828119 confirmed
block 430835 -> phys4828100 expected
430854 – 430835 = 19
4828119 – 4828100 = 19
“`
I would **not** test the `de2f…` candidates first. That hash has appeared repeatedly as a decoy/empty-looking block. Rank 2 is the current bad block. Rank 4 and rank 6 are backup candidates if stripe fails at the same page.
Run this in **Windows PowerShell**.
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test `phys4828100`:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-430835-from-page-134243-patch-lab\candidates\facts_neubing.block430835.rank07.phys4828100.db”
$TEST = “C:\B2-Recovery-Test\block430835-phys4828100-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK430835”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
Interpretation:
“`text
If it advances: phys4828100 confirmed.
If it still fails on page 134243: test rank04 / phys3654327 next, then rank06 / phys3507838.
If it starts cleanly: hold with engine running.
“`
## Prompt:
05/06/2026, 08:55:29
Path LineNumber Line
—
C:\B2-Recovery-Test\block430835-phys4828100-test-20260605-085314\dbeng16-error.log 1 05.06 08:54:18. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block430835-phys4828100-test-20260605-085314\dbeng16-error.log 2 Checksum failure on page 137507
C:\B2-Recovery-Test\block430835-phys4828100-test-20260605-085314\dbeng16.log 26 E. 05.06 08:54:18. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block430835-phys4828100-test-20260605-085314\dbeng16.log 27 Checksum failure on page 137507
PS C:\WINDOWS\system32>
## Response:
05/06/2026, 08:55:46
> **Preparing for block computation**
>
> I need to compute the block for page 137507, which advanced from block 134243, confirming phys4828100. The base path for this new candidate begins with block-430835, built from block-430891 and block431190. I’ll trace the base relations and carefully calculate the key, using a formula for the page-to-block relation.
>
> Thought for 12s
Excellent — that is an advance.
“`text
block 430835 -> phys4828100 confirmed
next failure -> page 137507
“`
Page `137507` lies in:
“`text
block 431039 covers pages 137497–137512
likely stripe continuation: phys4828303
“`
The geometry is clean:
“`text
block 431045 -> phys4828309 confirmed
block 431039 -> phys4828303 expected
431045 – 431039 = 6
4828309 – 4828303 = 6
“`
First stop the current Windows test engine:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `137507` / block `431039`, using the current confirmed branch as base:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-430835-from-page-134243-patch-lab/candidates/facts_neubing.block430835.rank07.phys4828100.db”
PAGE=137507
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Then build the candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. Expected likely candidate:
“`text
block 431039 -> phys4828303
“`
## Prompt:
05/06/2026, 09:11:15
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5099135 70 e1ecf1551d5fa8fca1e176b45a93dd34bc9fcc29f736577bc14e6308f062348e yes
2 4195706 9 de2f256064a0af797747c2b97505dc0b9f3df0de4f489eac731c23ae9ca9cc31 no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431039-from-page-137507-patch-lab/candidates/facts_neubing.block431039.rank02.phys4195706.db
3 3508032 4 e1ecf1551d5fa8fca1e176b45a93dd34bc9fcc29f736577bc14e6308f062348e yes
4 4828303 1 e5fd400aacd44088fc68797f58dadc9978a9f918a05c0a80ffb4d93feb2297bb no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-431039-from-page-137507-patch-lab/candidates/facts_neubing.block431039.rank04.phys4828303.db
===== CANDIDATE FILES =====
total 1.3G
-rwxr-xr-x 1 root root 649M Jun 5 08:58 facts_neubing.block431039.rank02.phys4195706.db
-rwxr-xr-x 1 root root 212 Jun 5 08:59 facts_neubing.block431039.rank02.phys4195706.db.sha256
-rwxr-xr-x 1 root root 649M Jun 5 01:33 facts_neubing.block431039.rank04.phys4828303.db
-rwxr-xr-x 1 root root 212 Jun 5 09:00 facts_neubing.block431039.rank04.phys4828303.db.sha256
root@pve:~#
## Response:
05/06/2026, 09:11:40
Good. This table is clear.
“`text
block 431039 -> rank04 / phys4828303
“`
Rank 2 is again the recurring `de2f…` decoy pattern. Rank 4 fits the confirmed stripe geometry:
“`text
block 431045 -> phys4828309 confirmed
block 431039 -> phys4828303 expected
“`
Run this in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then test `phys4828303`:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-431039-from-page-137507-patch-lab\candidates\facts_neubing.block431039.rank04.phys4828303.db”
$TEST = “C:\B2-Recovery-Test\block431039-phys4828303-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK431039”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send just the new page number. If it still fails on `137507`, then we try rank 2, but rank 4 is the right first test.
## Prompt:
05/06/2026, 09:14:32
Path LineNumber Line
—
C:\B2-Recovery-Test\block431039-phys4828303-test-20260605-091230\dbeng16-error.log 1 05.06 09:13:31. *** FEHLER *** Assertierung fe…
C:\B2-Recovery-Test\block431039-phys4828303-test-20260605-091230\dbeng16-error.log 2 Checksum failure on page 136601
C:\B2-Recovery-Test\block431039-phys4828303-test-20260605-091230\dbeng16.log 26 E. 05.06 09:13:31. *** FEHLER *** Assertierung…
C:\B2-Recovery-Test\block431039-phys4828303-test-20260605-091230\dbeng16.log 27 Checksum failure on page 136601
PS C:\WINDOWS\system32>
## Response:
05/06/2026, 09:14:46
Excellent — another confirmed advance.
“`text
block 431039 -> phys4828303 confirmed
next failure -> page 136601
“`
Page `136601` is exactly the **first page** of its 64K block:
“`text
block 430983 covers pages 136601–136616
THIN_VOFF should be 0
“`
This one sits between the earlier lower stripe and the later higher stripe, so let the table decide. Likely candidates may be around `phys4828247/4828248`, but we should not assume.
First stop the current Windows test engine:
“`powershell
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then on **Proxmox SSH**, build candidates for page `136601` / block `430983`:
“`bash
export TMPDIR=/mnt/pve/MYCLOUD-310867
OUT=$(cat /tmp/latest-b2-facts-forensic-dir.txt)
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
RANGE=”$OUT/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range”
HITS=”$RANGE/db-run0-keyrange-hits.tsv”
BASE=”$PUB/block-431039-from-page-137507-patch-lab/candidates/facts_neubing.block431039.rank04.phys4828303.db”
PAGE=136601
PAGE_SIZE=4096
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
THIN=65536
LCN=$((RUN0_LCN + PAGE))
VBYTE=$((OLD_VOLUME_BASE + LCN * PAGE_SIZE))
KEY=$((VBYTE / THIN))
VOFF=$((VBYTE % THIN))
BLOCK_FOFF=$((KEY * THIN – OLD_VOLUME_BASE – RUN0_LCN * PAGE_SIZE))
START_PAGE=$((BLOCK_FOFF / PAGE_SIZE))
END_PAGE=$((START_PAGE + 15))
PATCH=”$PUB/block-${KEY}-from-page-${PAGE}-patch-lab”
mkdir -p “$PATCH/candidates” “$PATCH/blocks”
{
echo “PAGE=$PAGE”
echo “PAGE_SIZE=$PAGE_SIZE”
echo “RUN0_LCN=$RUN0_LCN”
echo “NTFS_LCN=$LCN”
echo “VBYTE=$VBYTE”
echo “THIN_KEY=$KEY”
echo “THIN_VOFF=$VOFF”
echo “BLOCK_FOFF=$BLOCK_FOFF”
echo “START_PAGE=$START_PAGE”
echo “END_PAGE=$END_PAGE”
echo “HITS=$HITS”
echo “BASE=$BASE”
echo “PATCH=$PATCH”
} | tee “$PATCH/block-${KEY}-coordinates.txt”
awk -F’\t’ -v k=”$KEY” ‘NR==1 || $3==k {print}’ “$HITS” \
| tee “$PATCH/block-${KEY}-key-hits.tsv”
awk -F’\t’ -v k=”$KEY” ‘NR>1 && $3==k {c[$4]++} END {for (p in c) print c[p], p}’ “$HITS” \
| sort -nr \
| tee “$PATCH/block-${KEY}-phys-votes.txt”
cat “$PATCH/block-${KEY}-coordinates.txt”
cat “$PATCH/block-${KEY}-phys-votes.txt”
“`
Build the candidates:
“`bash
PREV=”$PUB/block-431046-from-page-137614-patch-lab/build_block_candidates.py”
python3 “$PREV” \
“$BASE” “$TDATA” “$HITS” “$KEY” “$BLOCK_FOFF” “$PATCH” \
| tee “$PATCH/build-block-${KEY}-candidates.log”
{
echo “===== COORDINATES =====”
cat “$PATCH/block-${KEY}-coordinates.txt”
echo
echo “===== PHYS VOTES =====”
cat “$PATCH/block-${KEY}-phys-votes.txt”
echo
echo “===== BUILD =====”
cat “$PATCH/build-block-${KEY}-candidates.log”
echo
echo “===== CANDIDATE SUMMARY =====”
cat “$PATCH/block${KEY}-candidate-summary.tsv”
echo
echo “===== CANDIDATE FILES =====”
ls -lh “$PATCH/candidates”
} | tee “$PATCH/block-${KEY}-report.txt”
rsync -aH –info=progress2 “$PUB/” “$PUB2/”
cat “$PATCH/block-${KEY}-report.txt”
“`
Paste the candidate summary. This one deserves careful selection rather than automatic stripe-following.
## Prompt:
05/06/2026, 09:23:00
===== CANDIDATE SUMMARY =====
rank phys votes block_sha256 same_as_current candidate_db
1 5181294 133 3c12b8c7a9a70b5b7ed4711222394790f152fcce3cb2969cfc3486bcd7f7214b yes
2 3507976 4 3c12b8c7a9a70b5b7ed4711222394790f152fcce3cb2969cfc3486bcd7f7214b yes
3 4828248 1 cb6b9a907e8ab86671e40732b694ae430cc1ce8a9bb9408a50d46ce70d61d6bf no /mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/block-430983-from-page-136601-patch-lab/candidates/facts_neubing.block430983.rank03.phys4828248.db
===== CANDIDATE FILES =====
total 649M
-rwxr-xr-x 1 root root 649M Jun 5 09:00 facts_neubing.block430983.rank03.phys4828248.db
-rwxr-xr-x 1 root root 212 Jun 5 09:18 facts_neubing.block430983.rank03.phys4828248.db.sha256
root@pve:~#
## Response:
05/06/2026, 09:23:16
Good. This one is decisive again:
“`text
block 430983 -> rank03 / phys4828248
“`
The higher-vote candidates are identical to the current failing block. The only true alternate is the stripe candidate, and it fits the geometry:
“`text
block 431039 -> phys4828303 confirmed
block 430983 -> phys4828248 expected-ish nearby continuation
“`
Test it in **Windows PowerShell**:
“`powershell
# Stop only our recovery/test SQL Anywhere engines
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Where-Object {
$_.CommandLine -match ‘C:\\B2-Recovery-Test’ -or
$_.CommandLine -match ‘B2RECOVERY’
} |
ForEach-Object { Stop-Process -Id $_.ProcessId -Force }
Get-Process WerFault -ErrorAction SilentlyContinue | Stop-Process -Force
“`
Then:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CANDIDATE = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\block-430983-from-page-136601-patch-lab\candidates\facts_neubing.block430983.rank03.phys4828248.db”
$TEST = “C:\B2-Recovery-Test\block430983-phys4828248-test-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $TEST | Out-Null
Copy-Item $CANDIDATE “$TEST\facts_neubing.db” -Force
Get-FileHash “$TEST\facts_neubing.db” -Algorithm SHA256
Get-Item “$TEST\facts_neubing.db” | Select-Object FullName, Length, LastWriteTime
$dbengArgs = @(
“-n”, “B2RECOVERY_BLOCK430983”,
“-o”, “$TEST\dbeng16.log”,
“-oe”, “$TEST\dbeng16-error.log”,
“-x”, “none”,
“$TEST\facts_neubing.db”,
“-n”, “facts_neubing”,
“-r”
)
$p = Start-Process -FilePath “$SA\dbeng16.exe” -ArgumentList $dbengArgs -PassThru
Start-Sleep -Seconds 8
“TEST=$TEST”
“DBENG_PID=$($p.Id)”
if (Get-Process -Id $p.Id -ErrorAction SilentlyContinue) {
“DBENG_RUNNING=1”
} else {
“DBENG_RUNNING=0”
}
“===== dbeng16-error.log =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue | Select-Object -Last 120
“===== checksum/assert lines from logs only =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|page” |
Select-Object Path, LineNumber, Line
“`
If it advances, send just the new page number. If it starts cleanly, hold with the engine running.
## Prompt:
05/06/2026, 09:31:45
By jove, we may have it! SQL Anywhere opened, loaded, and then exited so quickly I couldn’t follow it, but no error occurred!
## Response:
05/06/2026, 09:31:53
> **Verifying database startup and validating logs**
>
> I need to carefully verify the database process. First, I’ll inspect the logs for relevant entries about whether the database started or stopped without issues, like “Datenbank gestartet” or “Datenbank heruntergefahren.” Then, I’ll check if the database is running (DB_RUNNING=0) and run dbvalid if necessary. I’ll also consider running dbisql/dbvalid on a read-only connection for further validation.
>
> **Checking for startup errors and validating candidate**
>
> I need to check whether there were any checksum failures at startup—it’s a big deal if there weren’t any. I’ll review the logs by running commands like `Get-Content $TEST\dbeng16.log -Last 200`, and then verify if there are any errors. If it’s clean, I’ll move forward with marking this as the “best candidate” for validation.
>
> Thought for 15s
By jove indeed. That is the first possible **startup-clean candidate**.
Now we must prove it from logs, not from the window behavior. Do **not** launch FACTS yet.
Run this in the same **Windows PowerShell** window:
“`powershell
“TEST=$TEST”
“===== process state =====”
Get-CimInstance Win32_Process -Filter “name=’dbeng16.exe'” |
Select-Object ProcessId, CommandLine |
Format-List
“===== files =====”
Get-ChildItem $TEST |
Select-Object FullName, Length, LastWriteTime
“===== dbeng16.log full tail =====”
Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue |
Select-Object -Last 250
“===== dbeng16-error.log full tail =====”
Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue |
Select-Object -Last 250
“===== error/assert/checksum lines =====”
Get-ChildItem $TEST -File |
Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|Fehler|failed|failure|corrupt|invalid” |
Select-Object Path, LineNumber, Line
“`
What we want is:
“`text
no Checksum failure
no Assertierung fehlgeschlagen
no FEHLER
“`
If the logs are clean, immediately preserve this candidate as our first clean-start master:
“`powershell
$GOOD = “C:\B2-Recovery-Test\facts_neubing.STARTUP-CLEAN-CANDIDATE.db”
Copy-Item “$TEST\facts_neubing.db” $GOOD -Force
Get-FileHash $GOOD -Algorithm SHA256
Get-Item $GOOD | Select-Object FullName, Length, LastWriteTime
“`
Then copy it back to the NAS validation folder:
“`powershell
Copy-Item $GOOD “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.STARTUP-CLEAN-CANDIDATE.db” -Force
Get-FileHash “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.STARTUP-CLEAN-CANDIDATE.db” -Algorithm SHA256
“`
After that, hold. The next phase is no longer page surgery; it is **read-only SQL-level validation**. We first confirm the clean log, then we decide whether to use `dbvalid`, `dbisql`, or a controlled FACTS client test.
## Prompt:
05/06/2026, 09:44:34
I just called the customer and relieved his concern based upon this return and advised him that we still must verify our state before I can confirm success.
###
PS C:\WINDOWS\system32> “===== dbeng16.log full tail =====”
===== dbeng16.log full tail =====
PS C:\WINDOWS\system32> Get-Content “$TEST\dbeng16.log” -ErrorAction SilentlyContinue |
> > Select-Object -Last 250
> > I. 05.06 09:30:05. SQL Anywhere Personal Server Version 16.0.0.2798
I. 05.06 09:30:05. Workgroup Edition
I. 05.06 09:30:05.
I. 05.06 09:30:05. Copyright © 2013 SAP AG oder ein SAP-Konzernunternehmen.
I. 05.06 09:30:05. Alle Rechte vorbehalten.
I. 05.06 09:30:05. Die Nutzung dieser Software wird durch die Bestimmungen des Sybase-Lizenzvertrags geregelt.
I. 05.06 09:30:05. Siehe http://www.sybase.com/softwarelicenses.
I. 05.06 09:30:05.
I. 05.06 09:30:05. Grenzwert für Verbindungen (Personal Server): 10
I. 05.06 09:30:05. Erkannte Prozessoren: 1 (darin 6 logische Prozessoren enthalten)
I. 05.06 09:30:05. Begrenzung der Prozessorenanzahl (Personal Server): 1
I. 05.06 09:30:05. Maximale Anzahl von Prozessoren, die der Server benutzen wird: 1 physische(r) Prozessor(en), 4 Prozessorkern(e)
I. 05.06 09:30:05. Dieser Server ist lizenziert für:
I. 05.06 09:30:05. Neubing
I. 05.06 09:30:05. I+N
I. 05.06 09:30:05. Windows 10 Build 26200 läuft auf X86_64
I. 05.06 09:30:05. Server erstellt für X86_64-Prozessorarchitektur
I. 05.06 09:30:05. 668940 kB Speicher für Cachezwecke benutzt
I. 05.06 09:30:05. Mindest-Cachegröße: 9860 kB, Maximale Cachegröße: 14997100 kB
I. 05.06 09:30:05. Verwendung einer maximalen Seitengröße von 4096 Byte
I. 05.06 09:30:05. Multiprogramming-Stufe: 20
I. 05.06 09:30:05. Datenbank “facts_neubing” (C:\B2-Recovery-Test\block430983-phys4828248-test-20260605-092905\facts_neubing.db) wird gestartet am/um Freitag, 05. Juni 2026 09:30
I. 05.06 09:30:05. Datenbank “facts_neubing” (facts_neubing.db) gestartet am/um Freitag, 05. Juni 2026 09:30
I. 05.06 09:30:05. Datenbankserver gestartet am/um Freitag, 05. Juni 2026 09:30
I. 05.06 09:30:05. Start der SharedMemory-Verbindung wird versucht …
I. 05.06 09:30:05. SharedMemory-Verbindung erfolgreich gestartet
I. 05.06 09:30:05. Anforderungen werden jetzt akzeptiert
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “===== dbeng16-error.log full tail =====”
===== dbeng16-error.log full tail =====
PS C:\WINDOWS\system32> Get-Content “$TEST\dbeng16-error.log” -ErrorAction SilentlyContinue |
> > Select-Object -Last 250
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> “===== error/assert/checksum lines =====”
> > ===== error/assert/checksum lines =====
> > PS C:\WINDOWS\system32> Get-ChildItem $TEST -File |
> > Where-Object { $_.Name -match ‘dbeng16.*\.log$’ } |
> > Select-String -Pattern “Checksum failure|Assertierung|Assertion|FEHLER|ERROR|Fehler|failed|failure|corrupt|invalid” |
> > Select-Object Path, LineNumber, Line
> > PS C:\WINDOWS\system32> $GOOD = “C:\B2-Recovery-Test\facts_neubing.STARTUP-CLEAN-CANDIDATE.db”
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> Copy-Item “$TEST\facts_neubing.db” $GOOD -Force
> > PS C:\WINDOWS\system32>
> > PS C:\WINDOWS\system32> Get-FileHash $GOOD -Algorithm SHA256
Algorithm Hash Path
—
SHA256 97FE28054E13EE93534A5B262429462AAFFDBA7A6C5FFAD132C8AD5ABB5DCE50 C:\B2-Recovery-Test\facts_neubing.STARTUP-CLEAN-CANDI…
###
## Response:
05/06/2026, 09:44:47
> **Evaluating steps for database preservation and validation**
>
> I’m thinking through the next steps for preserving data while the engine is running. The file might still be copied even if it’s read-only. After preserving to NAS, I’ll check SQL validation syntax and ensure the right connection information. It seems like I might need those credentials to perform the dbvalid and other tests.
>
> Thought for 17s
That is the return we needed. This is a real milestone:
“`text
Database started successfully.
SharedMemory started successfully.
Requests are now accepted.
No dbeng16-error.log output.
No checksum/assert/failure lines.
Clean candidate SHA256:
97FE28054E13EE93534A5B262429462AAFFDBA7A6C5FFAD132C8AD5ABB5DCE50
“`
You were exactly right with the customer: **strong positive result, not yet final success**.
Next, preserve this exact clean-start candidate on both NAS devices before we do SQL-level validation.
## 1. Copy clean candidate to NAS
Run in **Windows PowerShell**:
“`powershell
$GOOD = “C:\B2-Recovery-Test\facts_neubing.STARTUP-CLEAN-CANDIDATE.db”
$NASGOOD = “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.STARTUP-CLEAN-CANDIDATE.db”
Copy-Item $GOOD $NASGOOD -Force
Get-FileHash $GOOD -Algorithm SHA256
Get-FileHash $NASGOOD -Algorithm SHA256
Get-Item $GOOD, $NASGOOD |
Select-Object FullName, Length, LastWriteTime
“`
Expected hash:
“`text
97FE28054E13EE93534A5B262429462AAFFDBA7A6C5FFAD132C8AD5ABB5DCE50
“`
## 2. Mirror it to the second NAS from Proxmox
Run on **Proxmox SSH**:
“`bash
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
sha256sum “$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db” \
| tee “$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db.sha256”
rsync -aH –info=progress2 “$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db”* “$PUB2/”
sha256sum “$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db” “$PUB2/facts_neubing.STARTUP-CLEAN-CANDIDATE.db”
df -h “$PUB” “$PUB2”
“`
## 3. Keep the read-only engine running for validation
Since the log says:
“`text
Anforderungen werden jetzt akzeptiert
“`
the engine is alive and accepting SharedMemory connections. We should use that running read-only engine for the next probe.
First try the least invasive connection test in **Windows PowerShell**:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
& “$SA\dbping.exe” -c “ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=Facts;PWD=” 2>&1
“DBPING_EXITCODE=$LASTEXITCODE”
“`
If `dbping.exe` is missing, run:
“`powershell
Get-ChildItem “$SA\dbping.exe”
“`
If `UID=Facts;PWD=` fails, do **not** improvise yet. Paste the exact error. The connection credential will determine whether we use `Facts`, `DBA`, or the client’s existing B2 configuration.
For now: preserve, mirror, then `dbping`.
## Prompt:
05/06/2026, 09:52:20
PS C:\WINDOWS\system32> Copy-Item $GOOD “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.STARTUP-CLEAN-CANDIDATE.db” -Force
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> Get-FileHash “\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.STARTUP-CLEAN-CANDIDATE.db” -Algorithm SHA256
Algorithm Hash Path
—
SHA256 97FE28054E13EE93534A5B262429462AAFFDBA7A6C5FFAD132C8AD5ABB5DCE50 \\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts…
PS C:\WINDOWS\system32>
and…
PS C:\WINDOWS\system32> $SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> & “$SA\dbping.exe” -c “ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=Facts;PWD=” 2>&1
SQL Anywhere-Dienstprogramm Server-Ping Version 16.0.0.2798
Ping des Servers erfolgreich.
PS C:\WINDOWS\system32> “DBPING_EXITCODE=$LASTEXITCODE”
DBPING_EXITCODE=0
PS C:\WINDOWS\system32>
## Response:
05/06/2026, 09:52:40
Excellent. This is now a second major validation:
“`text
Clean-start candidate copied to NAS: yes
NAS SHA256 matches: 97FE28054E13EE93534A5B262429462AAFFDBA7A6C5FFAD132C8AD5ABB5DCE50
SQL Anywhere server ping: successful
DBPING_EXITCODE=0
Credentials accepted: UID=Facts;PWD=
“`
That means SQL Anywhere did not merely start; it accepted a live client connection to the recovered database.
Now preserve mirror on Proxmox, then run read-only SQL-level validation.
## 1. Mirror clean candidate to second NAS
On **Proxmox SSH**:
“`bash
PUB=”/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION”
PUB2=”/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION”
sha256sum “$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db” \
| tee “$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db.sha256”
rsync -aH –info=progress2 “$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db”* “$PUB2/”
sha256sum \
“$PUB/facts_neubing.STARTUP-CLEAN-CANDIDATE.db” \
“$PUB2/facts_neubing.STARTUP-CLEAN-CANDIDATE.db”
df -h “$PUB” “$PUB2”
“`
## 2. Try non-mutating database info
In **Windows PowerShell**, while the read-only engine is still running:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
$CONN = “ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=Facts;PWD=”
$VALIDATE = “C:\B2-Recovery-Test\validation-$(Get-Date -Format yyyyMMdd-HHmmss)”
New-Item -ItemType Directory -Force $VALIDATE | Out-Null
& “$SA\dbinfo.exe” -c “$CONN” 2>&1 |
Tee-Object “$VALIDATE\dbinfo.txt”
“DBINFO_EXITCODE=$LASTEXITCODE”
“`
If `dbinfo` succeeds, continue with:
“`powershell
& “$SA\dbvalid.exe” -c “$CONN” 2>&1 |
Tee-Object “$VALIDATE\dbvalid.txt”
“DBVALID_EXITCODE=$LASTEXITCODE”
“`
This is the next decisive test. A clean `dbvalid` would be extremely strong evidence that the recovered DB is structurally usable.
If `dbvalid` fails, paste the error. It may identify one more page/table/index problem, or it may simply require different privileges.
## Prompt:
05/06/2026, 09:55:20
PS C:\WINDOWS\system32> $SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
PS C:\WINDOWS\system32> $CONN = “ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=Facts;PWD=”
PS C:\WINDOWS\system32> $VALIDATE = “C:\B2-Recovery-Test\validation-$(Get-Date -Format yyyyMMdd-HHmmss)”
PS C:\WINDOWS\system32> New-Item -ItemType Directory -Force $VALIDATE | Out-Null
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> & “$SA\dbinfo.exe” -c “$CONN” 2>&1 |
> > Tee-Object “$VALIDATE\dbinfo.txt”
> > dbinfo.exe : Ungültige Benutzer-ID bzw. ungültiges Kennwort
> > In Zeile:1 Zeichen:1
– & “$SA\dbinfo.exe” -c “$CONN” 2>&1 |
– “`
+ CategoryInfo : NotSpecified: (Ungültige Benut…ltiges Kennwort:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
“`
SQL Anywhere-Dienstprogramm Information Version 16.0.0.2798
PS C:\WINDOWS\system32>
PS C:\WINDOWS\system32> “DBINFO_EXITCODE=$LASTEXITCODE”
DBINFO_EXITCODE=9
PS C:\WINDOWS\system32>
## Response:
05/06/2026, 09:55:41
> **Guiding the user on connecting to SQL Anywhere database**
>
> It seems like there are issues with connecting to the database, possibly due to incorrect credentials. The dbping tool might only check the server connection and not the database. Exploring user credentials and connection strings, especially those involving DBA authority, would help. I’ll guide the user on using tools to test credentials securely.
>
> **Troubleshooting Facts account connection**
>
> The invalid user/password issue might be related to a blank password field or incorrect parsing. We can try using dbping with the `-d` flag to connect to the database directly. I’ll guide you through searching for configuration files on the client node, checking for ODBC DSN entries, and ensuring no sensitive info is shared.
>
> Thought for 22s
`dbinfo` failing with invalid user/password does **not** weaken the recovery result.
It means this:
“`text
dbeng16 read-only startup: clean
dbping server-level ping: successful
dbinfo authenticated database connection: not yet
“`
`dbping` likely confirmed the server/engine endpoint, while `dbinfo` actually authenticated to the database. So the next task is **credential/config discovery**, not more page surgery.
Please do **not** paste any non-empty passwords here. We can test locally and redact output.
## 1. First confirm database-level ping
Run this in Windows PowerShell:
“`powershell
$SA = “C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64”
& “$SA\dbping.exe” -d -c “ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=Facts;PWD=” 2>&1
“DBPING_D_FACTS_BLANK_EXITCODE=$LASTEXITCODE”
“`
If that fails, it confirms `Facts` with blank password is not a valid DB login.
## 2. Try common non-secret variants
These contain no hidden password:
“`powershell
$tests = @(
“ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=Facts;PWD=”,
“ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=DBA;PWD=sql”,
“ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=DBA;PWD=”,
“ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=dba;PWD=sql”
)
foreach ($c in $tests) {
“===== TEST $c =====”
& “$SA\dbping.exe” -d -c “$c” 2>&1
“EXIT=$LASTEXITCODE”
}
“`
If any returns success, stop there and tell me which UID worked, not the password if it is sensitive.
## 3. Search the installed FACTS/B2 client configs without exposing passwords
Run this on the Windows node:
“`powershell
$roots = @(
“C:\Program Files (x86)\B2 Software GmbH”,
“C:\Program Files\B2 Software GmbH”,
“C:\ProgramData”,
“C:\Users”
)
$patterns = “UID=|UserID=|PWD=|Password=|EngineName=|DatabaseName=|DatabaseFile=|facts_neubing|neubing”
$files = Get-ChildItem $roots -Recurse -File -ErrorAction SilentlyContinue |
Where-Object {
$_.Extension -match ‘\.(config|ini|xml|json|txt|udl|dsn|settings|properties)$’ -or
$_.Name -match ‘config|settings|connection|facts|b2|sql|sybase’
}
$hits = foreach ($f in $files) {
$m = Select-String -Path $f.FullName -Pattern $patterns -ErrorAction SilentlyContinue
foreach ($x in $m) {
[PSCustomObject]@{
Path = $x.Path
LineNumber = $x.LineNumber
Line = ($x.Line -replace ‘(PWD|Password)=([^;””< ]*)','$1=
}
}
}
$hits |
Sort-Object Path, LineNumber |
Tee-Object “C:\B2-Recovery-Test\connection-config-search-redacted.txt” |
Format-Table -Auto
“`
Paste the **redacted** output only.
## 4. Also check ODBC DSNs
“`powershell
“===== 64-bit User/System ODBC DSNs =====”
Get-OdbcDsn -ErrorAction SilentlyContinue |
Where-Object { $_.Name -match ‘B2|Facts|Neubing|SQL|Sybase|Anywhere’ -or $_.DriverName -match ‘SQL Anywhere|Sybase’ } |
Format-List *
“===== Registry DSN search =====”
reg query “HKCU\Software\ODBC\ODBC.INI” /s | findstr /i “B2 Facts Neubing SQL Sybase Anywhere UID PWD Database Engine”
reg query “HKLM\Software\ODBC\ODBC.INI” /s | findstr /i “B2 Facts Neubing SQL Sybase Anywhere UID PWD Database Engine”
reg query “HKLM\Software\WOW6432Node\ODBC\ODBC.INI” /s | findstr /i “B2 Facts Neubing SQL Sybase Anywhere UID PWD Database Engine”
“`
The database itself is now starting cleanly. We are past raw recovery and into controlled application/database authentication.
## Prompt:
05/06/2026, 10:11:06
We do have the client tools on the node, but they are “sharp” on the drive P: mapping. I believe that if we can reconstruct their P: drive, we are “home”.
## Response:
05/06/2026, 10:11:17
> **Guidance on reconstructing P: drive from recovered VM**
>
> To reconstruct the P: drive, it’s crucial to check how it was mapped on the Windows client. Inspect node mappings, client config, and registry drives. Since the P: drive may be a network share, verify via net use, registry, and shortcuts. Use the VM copy to rebuild the P: drive and verify paths like P:\B2\db_12\facts_neubing.db. Credentials should be tested afterward.
>
> **Planning P: drive reconstruction from VM**
>
> To recover the P: drive, I need to first identify what it maps to and the expected files, but without executing anything prematurely. We could create a test P: drive using a subst command, pointing to a local test folder with a dummy file like facts_neubing.log. After confirming the mapping, we’ll proceed to reconstruct the P: drive from the recovered VM disk, keeping everything clean.
>
> Thought for 25s
Yes — that may be the missing outer shell. The database is now clean-starting; if the client tools are hard-wired to `P:`, then reconstructing `P:` as a safe test drive may let the FACTS/B2 client open normally.
But we should treat those client tools as **sharp** and avoid launching them until we know exactly what `P:` is supposed to be.
## First: identify what `P:` was
Run this on the **Windows client node**, not Proxmox:
“`powershell
“===== Current drive mappings =====”
net use
Get-PSDrive | Sort-Object Name | Format-Table -Auto
“===== HKCU Network P mapping =====”
reg query “HKCU\Network\P” /s 2>$null
“===== Explorer MountPoints2 references to P / B2 / Facts =====”
reg query “HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2” /s 2>$null |
findstr /i “P: B2 Facts Neubing SQL Anywhere Sybase”
“===== Shortcuts/config references to P: =====”
$roots = @(
“$env:PUBLIC\Desktop”,
“$env:USERPROFILE\Desktop”,
“$env:APPDATA”,
“$env:LOCALAPPDATA”,
“C:\ProgramData”,
“C:\Program Files (x86)\B2 Software GmbH”,
“C:\Program Files\B2 Software GmbH”
)
Get-ChildItem $roots -Recurse -File -ErrorAction SilentlyContinue |
Where-Object { $_.Extension -match ‘\.(ini|config|xml|json|txt|udl|dsn|settings|properties|lnk)$’ -or $_.Name -match ‘facts|b2|config|settings|connection’ } |
Select-String -Pattern ‘P:\\|facts_neubing|db_12|FACTSDotNet|B2 Software|EngineName|DatabaseFile|DatabaseName’ -ErrorAction SilentlyContinue |
Select-Object Path, LineNumber, Line |
Format-Table -Auto
“`
If any password appears, redact it before pasting.
## Second: inspect the VM’s attached physical disk
The VM config showed a physical `sata2` disk:
“`text
/dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01
“`
That could very plausibly be the historical `P:` drive. Since VM100 is stopped, inspect it read-only from **Proxmox SSH**:
“`bash
qm status 100
DISK=/dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01
ls -l “$DISK”
lsblk -o NAME,SIZE,FSTYPE,LABEL,UUID,MOUNTPOINTS “$DISK”
blkid “$DISK”* 2>/dev/null || true
“`
If it shows an NTFS partition, mount it read-only under `/run`:
“`bash
DISK=/dev/disk/by-id/ata-ST500DM002-1BD142_S2ANQP01
MNT=/run/vm100-sata2-ro
OUT=/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION/p-drive-discovery-$(date +%F-%H%M)
mkdir -p “$MNT” “$OUT”
PART=$(
for p in “${DISK}”-part*; do
[ -b “$p” ] || continue
TYPE=$(blkid -o value -s TYPE “$p” 2>/dev/null || true)
if [ “$TYPE” = “ntfs” ]; then
echo “$(blockdev –getsize64 “$p”) $p”
fi
done | sort -n | tail -1 | awk ‘{print $2}’
)
echo “PART=$PART” | tee “$OUT/part.txt”
mount -t ntfs3 -o ro,norecover “$PART” “$MNT” 2>/dev/null || \
mount -o ro “$PART” “$MNT”
df -h “$MNT” | tee “$OUT/df.txt”
ls -la “$MNT” | tee “$OUT/root-listing.txt”
“`
Then search only names/paths, not file contents first:
“`bash
{
echo “===== likely B2 / FACTS / SQL paths on candidate P drive =====”
find “$MNT” -maxdepth 5 \
\( -iname ‘*B2*’ -o -iname ‘*FACTS*’ -o -iname ‘*facts_neubing*’ -o -iname ‘db_12’ -o -iname ‘*SQL*’ -o -iname ‘*Sybase*’ \) \
-printf ‘%M\t%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ 2>/dev/null
echo
echo “===== database/log files =====”
find “$MNT” -type f \
\( -iname ‘facts_neubing.db’ -o -iname ‘facts_neubing.log’ -o -iname ‘*.db’ -o -iname ‘*.log’ \) \
-printf ‘%s\t%TY-%Tm-%Td %TH:%TM\t%p\n’ 2>/dev/null |
sort -n
} | tee “$OUT/p-drive-search.txt”
cat “$OUT/p-drive-search.txt”
“`
Hold after that. Do **not** run the client tools yet.
If this disk contains a recognizable `P:\B2\…` structure, we can create a safe reconstructed `P:` on the Windows node or attach a read-only/test copy, then place the clean-start database into the expected path. The clean DB is no longer our weak point; the next frontier is recreating the application’s expected filesystem topology without letting it mutate our only good candidate.
## Prompt:
05/06/2026, 10:19:53
I have “reams” of data for you, but to guard against some kind of “artefacts explosion”, let’s reason through this together first: I know full well the folder structure on P: and what it’s contents were. As we reconstructed the database those files were indeed on drive P: The database and all of the settings were there as well as customer data and shares for scanning etc.
## Response:
05/06/2026, 10:20:04
> **Refining approach for user request**
>
> I need to carefully approach this without any tools. The goal is to propose a minimal, testable set for P’s topology, and avoid overcomplicating things. I should recommend isolating testing, maybe using a mapped local folder, and preserving the original P drive. Also, I’ll ask the user to provide key info, like paths and service names.
>
> **Setting up safe P mapping for testing**
>
> To safely test with a clean candidate, I’ll suggest creating an artificial P: drive pointing to a staged folder on a Windows node, without using the actual recovered substrate. If P: is already mapped, I’ll remind the user not to override it but to use a local or NAS sandbox for testing. I’ll also advise copying select files and setting up the necessary logs for scanning.
>
> Thought for 54s
Yes. Your knowledge of the `P:` topology is now more valuable than a large dump.
We should **not** ingest reams yet. The database core is now clean-starting; the next risk is not recovery anymore, but accidentally letting sharp client tooling mutate or mispoint to the wrong place. So the next move is to reconstruct a **sandboxed P: drive**, not the whole production environment at once.
The principle:
“`text
Never point FACTS/B2 at the original substrate.
Never point it at the only clean candidate.
Always point it at a disposable P: reconstruction containing a copied clean DB.
“`
What we need from `P:` is likely not “everything” at first. We need the **bootstrapping topology**:
“`text
P:\B2\db_12\facts_neubing.db
P:\B2\db_12\facts_neubing.log maybe absent/recreated, not guessed
P:\B2\FACTSDotNet\… if the app/config lived there
P:\B2\sqlremote\…
P:\B2\settings/config/licensing…
P:\scan/share/customer folders… only if app refuses to start without them
“`
The reconstructed DB already proves the data layer can start. The `P:` reconstruction is now about satisfying the **application’s expectations**: paths, configs, engine name, database name, SQL Anywhere version assumptions, shares, and maybe scanner/document folders.
I would like only this minimal manifest from you first, not a large dump:
“`text
1. Exact original database path:
Example: P:\B2\db_12\facts_neubing.db
2. Exact original log path if known:
Example: P:\B2\db_12\facts_neubing.log
3. Exact FACTS/B2 executable path(s):
Example: P:\B2\FACTSDotNet\FactsCenterDotNet.exe
or C:\Program Files (x86)\B2 Software GmbH\FactsDotNet\…
4. Exact main config/settings files you know existed:
Example: P:\B2\FACTSDotNet\*.config
P:\B2\settings\…
P:\B2\*.ini
5. Original P: source:
Was P: a mapped share, a VM-attached disk, or a local/server volume?
Example: P: = \\SERVER\B2 or P: = local data disk inside VM100
6. App startup expectation:
Did users start a local client that connected to a server engine,
or did the app start SQL Anywhere itself from P:/config?
7. Mandatory non-database folders:
Scans, document shares, templates, archives, export folders, etc.
“`
Once we have that, I would build:
“`text
C:\B2-Recovery-Test\PDRIVE\
“`
and map it temporarily as `P:` **only on the helper/test Windows node**, only after confirming `P:` is not currently mapped to something important. Into that sandbox we place:
“`text
P:\B2\db_12\facts_neubing.db ← copied from STARTUP-CLEAN-CANDIDATE
“`
plus the minimum config/app folders you identify. Then we start with non-destructive checks, and only then a controlled client launch.
One important point: before launching any FACTS client, we should stop the current read-only recovery engine or intentionally choose a different engine name. We do not want the app accidentally connecting to the wrong running engine, or the read-only engine masking a missing-path problem.
You were right to call the customer cautiously. The honest state is:
“`text
The recovered DB now starts cleanly in SQL Anywhere and accepts a server ping.
We still need application-level validation in the original P: topology.
“`
That is exactly where we are.
## Prompt:
05/06/2026, 10:31:43
First thing: is our current chat safe to continue? You have done stellar work, but even Mike Tyson needed a break between rounds. If you are not sure we can continue further it would be advisable to transition to a new chat by using the resources available to us now to make and test that transition. I have some great skill at this developed, partially with you, Claude, Abacus.ai (Genesis). I could provide you access to, as I have done before in other chats here, my private Gitea via token. There you can read all we have built together as MoE, decide if it is viable, advisable, and fine with your own “admissibility gate”.
For example: I could place this chat in our together created sanctuary there other OI and SI expressly do NOT have access to. It is OUR private-facing repo. Search our most recent chats here for more information.
## Response:
05/06/2026, 10:31:52
> **Considering safe continuation and handoff plan**
>
> The user is asking whether it’s safe to continue the current chat, and they might want to transition to a new conversation or document. Since they could be preparing to write or edit something, I might need to provide a summary for that, potentially with a handoff capsule or document if they’re planning further work.
>
> **Planning transition summary and security notes**
>
> I can give the user a standalone summary, including a writing block for future edits. A transition packet is reusable and can be copied into a new chat. I’ll suggest not sharing tokens in chat for safety and recommend using external methods (like pasting summaries or uploading redacted files) instead.
>
> Thought for 15s
Yes, the current chat is still safe to continue, but this is an excellent transition point.
We have crossed from **forensic page/block surgery** into **application topology reconstruction**. That is a natural boundary. I recommend we create a clean handoff now, then either continue here for a few more careful steps or open a fresh chat with the handoff pasted at the top.
Please do **not** paste a private Gitea token here yet. I do not have a native Gitea connector in this environment, and a token in chat is more risk than value right now. Better: you store the handoff in your private sanctuary repo from your side, then paste the handoff into a new chat or upload a redacted file when needed.
Here is the transition capsule.
**document: **
# B2 / FACTS SQL Anywhere Recovery — Transition Capsule
Date/time context: 2026-06-05 morning CEST.
## Operational posture
Customer database recovery is in progress. Treat all customer-identifying data, paths, hashes, screenshots, and database artifacts as private-facing unless explicitly redacted for later publication.
Do not launch FACTS/B2 client tools against production or original media yet.
Do not point any tool at the original LVM-thin substrate or only-good database candidate. Use disposable copies only.
Proxmox root filesystem is full or near full. Continue writing artifacts only to NAS paths, not `/root`, `/tmp`, `/var`, or local Proxmox storage.
## Important storage paths
Primary NAS validation folder:
“`text
/mnt/pve/MYCLOUD-310867/B2-RECOVERY-VALIDATION
“`
Mirror NAS validation folder:
“`text
/mnt/pve/MYCLOUD-159/B2-RECOVERY-VALIDATION
“`
Windows helper node working folder:
“`text
C:\B2-Recovery-Test
“`
SQL Anywhere tools copied from VM100 holding image:
“`text
C:\B2-Recovery-Test\tools\SQL Anywhere 16\Bin64
“`
## Original recovered DB
Recovered candidate:
“`text
facts_neubing.db
size: 679,821,312 bytes
original recovered SHA256:
F251939B737ACFDFC7407FA1BB9343E6FA11BEA26D295D40B986FADF49FCC78E
“`
SQL Anywhere `dblog.exe` recognized it and returned exit code `0`, proving it was a structurally recognizable SQL Anywhere database. It reported expected log file:
“`text
facts_neubing.log
“`
## Page/block repair method
SQL Anywhere read-only startup exposed page checksum failures. We repaired by selecting alternate 64K thin blocks or 4K pages from LVM-thin metadata candidates, using read-only reads from `TDATA`, writing candidate DBs only to NAS, and validating each candidate via SQL Anywhere read-only startup.
Primary thin source:
“`text
TDATA=/dev/mapper/local–lvm–nvme0n1-local–lvm–nvme0n1_tdata
“`
Key mapping assumptions used:
“`text
PAGE_SIZE=4096
THIN=65536
RUN0_LCN=6755031
OLD_VOLUME_BASE=16777216
“`
Candidate source table:
“`text
/mnt/pve/MYCLOUD-310867/b2-facts-forensic-2026-06-02-0925/thin-metadata-lab/raw-metadata-archaeology/db-first-run-range/db-run0-keyrange-hits.tsv
“`
## Confirmed repairs
Confirmed by SQL Anywhere advancing past the previous checksum failure:
“`text
page 133928 -> phys4828080
page 134629 -> phys4828124
page 135995 -> phys4828210
page 136504 -> phys4828241
block 431045 -> phys4828309
block 431046 -> phys4828310
block 431047 -> phys4828311
block 431050 -> phys4828314
block 431163 -> phys4828427
block 431164 -> phys4828428
block 431171 -> phys4828435
block 431189 -> phys4828453
block 431190 -> phys4828454
block 430854 -> phys4828119
block 430891 -> phys4828156
block 430835 -> phys4828100
block 431039 -> phys4828303
block 430983 -> phys4828248
“`
The last successful candidate produced clean SQL Anywhere startup.
## Clean-start candidate
The decisive candidate came from:
“`text
block 430983 -> phys4828248
“`
Clean-start candidate was copied to:
“`text
C:\B2-Recovery-Test\facts_neubing.STARTUP-CLEAN-CANDIDATE.db
\\192.168.127.128\Public\B2-RECOVERY-VALIDATION\facts_neubing.STARTUP-CLEAN-CANDIDATE.db
“`
SHA256:
“`text
97FE28054E13EE93534A5B262429462AAFFDBA7A6C5FFAD132C8AD5ABB5DCE50
“`
SQL Anywhere read-only startup log showed:
“`text
Datenbank “facts_neubing” gestartet
Datenbankserver gestartet
SharedMemory-Verbindung erfolgreich gestartet
Anforderungen werden jetzt akzeptiert
“`
No `dbeng16-error.log` content. No checksum/assert/failure lines.
## Connection state
`dbping.exe` succeeded:
“`text
SQL Anywhere-Dienstprogramm Server-Ping Version 16.0.0.2798
Ping des Servers erfolgreich.
DBPING_EXITCODE=0
“`
Connection string used:
“`text
ENG=B2RECOVERY_BLOCK430983;DBN=facts_neubing;LINKS=SharedMemory;UID=Facts;PWD=
“`
However, `dbinfo.exe -c` with `UID=Facts;PWD=` returned invalid user/password. Interpretation: server endpoint is reachable; database-level authentication/config still needs discovery.
## Current phase
Raw database recovery appears successful at SQL Anywhere engine-start level. We have not yet proven full database validity with `dbvalid`, nor application-level FACTS usability.
The next phase is reconstructing the expected `P:` drive topology in a sandbox.
The user knows the original `P:` structure. The original `P:` contained database, settings, customer data, scan/share folders, and likely FACTS/B2 application assumptions.
## Next recommended strategy
Do not ingest large dumps yet.
Do not launch sharp FACTS/B2 tools yet.
Build a sandboxed test `P:` topology, preferably under:
“`text
C:\B2-Recovery-Test\PDRIVE
“`
Then temporarily map that folder as `P:` only on the Windows helper/test node, after verifying `P:` is not currently mapped to anything important.
Place the clean-start candidate into the expected original DB path, likely something like:
“`text
P:\B2\db_12\facts_neubing.db
“`
Do not invent `facts_neubing.log`; handle log expectations carefully after confirming original topology.
Need from Carey before next action:
“`text
1. Exact original database path on P:
2. Exact original log path, if known
3. FACTS/B2 executable paths
4. Main config/settings file paths
5. Whether P: was mapped share, VM-attached disk, or local/server volume
6. Whether the app starts SQL Anywhere itself or connects to a running engine
7. Mandatory non-database folders: scans, templates, archives, exports, etc.
“`
Honest customer status:
“`text
The recovered database now starts cleanly in SQL Anywhere and accepts server ping. We still need application/topology validation before declaring full operational success.
“`
My recommendation: open a new chat now, paste that capsule first, then tell me the known `P:` topology in a concise tree. We can continue here too, but a fresh frame will reduce risk as we enter the application-level phase.
## Prompt:
05/06/2026, 10:36:06
What if I were to start the new chat and provide the link to this chat hosted on my web server (secure and temporary). You could use this chat as a RAG-source.
## Response:
05/06/2026, 10:36:18
> **Considering options for chat links and security**
>
> The user is asking about starting a new chat with a link hosted securely on a temporary web server. I need to think about how this could serve as a resource. I’m wondering if it could be used without authentication, but that’s risky. A better plan might be using a capsule or uploaded file, ensuring privacy and security.
>
> **Clarifying chat accessibility and privacy considerations**
>
> ChatGPT can’t access a chat’s link autonomously unless it’s explicitly provided in a new conversation with browsing enabled. If a user wants me to read an entire chat, it’s better to offer a structured index or capsule. I should be cautious about privacy and avoid handling PII or passwords.
>
> Thought for 18s
Yes, that is viable, with caveats.
A new chat could use a secure temporary web-hosted transcript as a **RAG/audit source** if the link is reachable from ChatGPT’s browsing environment. It should be plain text or Markdown, not a dynamic app, and preferably split into a few files rather than one enormous page.
Best setup:
“`text
/private-temporary-recovery/
README-HANDOFF.md ← transition capsule, current state, next step
RECOVERY-STATE.yaml ← paths, hashes, confirmed repairs, current candidate
TRANSCRIPT.md ← full chat transcript, redacted
COMMAND-LOGS/ ← optional selected logs/returns
“`
I would **not** put a private Gitea token in the new chat. Safer options are:
“`text
1. HTTPS temporary random URL, read-only, no login token in chat
2. IP allow-list if practical
3. Short expiration window
4. Redact customer names, passwords, public IPs, credentials, router details
5. Keep the database files themselves off that web server
“`
In the new chat, start with:
“`text
We are continuing a B2 / FACTS SQL Anywhere recovery. First read the handoff capsule below. A temporary RAG/audit transcript is available at:
“`
Then paste the transition capsule I gave you. The capsule should remain the primary state source; the web transcript should be fallback evidence.
One warning: if the temporary site requires authentication, self-signed TLS, VPN, LAN access, or unusual headers, I may not be able to fetch it. A plain HTTPS URL with a long random path is most likely to work.
My strongest recommendation:
“`text
New chat + pasted transition capsule + temporary Markdown transcript URL
“`
That gives us both continuity and a cleaner working frame.
## Prompt:
05/06/2026, 12:28:55
Can you read this snippet?
## Response:
05/06/2026, 12:29:01
> **Inspecting URL for current information and validity**
>
> [ChatGPT-Private – Heurist.org](https://heurist.org/chatgpt-private/)
>
> Thought for 9s
Yes – I can read it.
The page is accessible, and I can see it is rendering a private ChatGPT transcript titled **“Proxmox Toshiba Drive Recovery”**, with metadata showing created/updated/exported timestamps and the original prompt beginning at the Proxmox/Toshiba-drive recovery context. It is available as normal HTML/plain text enough for me to use as a RAG/audit source. ([heurist.org](https://heurist.org/chatgpt-private/))
Two notes before using it heavily:
1. The page appears publicly reachable at that URL. Keep it temporary, random/private, and remove it after the transition.
2. It includes a ChatGPT conversation link and detailed customer/server recovery material. I would avoid adding credentials, tokens, passwords, or database files there.
For a new chat, this will work best if you start with the transition capsule, then add:
“`text
Temporary transcript/audit source:
Use it only to recover missing context. Treat the transition capsule as authoritative for the current recovery state.
“`
I would also add a short `README-HANDOFF.md` at the top of that page if possible, because the current page begins with the older Toshiba/Proxmox recovery arc rather than the latest SQL Anywhere clean-start milestone.
—
**Sources:**
– [ChatGPT-Private – Heurist.org](https://heurist.org/chatgpt-private/)
## Prompt:
05/06/2026, 12:32:08
Is it possible for you to create the structured documents of this chat here or should I have that done in the new chat where you are fresh? Assume that this entire chat is accessible from that link temporarily.
## Response:
05/06/2026, 12:32:15
> **Responding to question about creating structured documents**
>
> The user’s asking if creating structured documents based on this conversation is possible, whether here or in a new chat. They’re not asking us to draft right now. I think I can offer advice on how it might be done without needing the writing block, especially if they just want suggestions or an initial outline.
>
> **Clarifying document creation approach**
>
> I can mention creating a small seed bundle here, but for full structured documents, it’s better to start fresh in a new chat using a link. Here, I can suggest a plan or file list, but if they need files or artifacts, perhaps a handoff capsule could work. Creating docs from the current chat might be less efficient.
>
> Thought for 12s
Yes, it is possible here, but I recommend doing the **full structured document creation in a fresh chat**.
Not because this chat has failed. It has not. But this chat is carrying a long live forensic operation, and document synthesis is a different task: extraction, normalization, redaction, chronology, and publication framing. A fresh chat can use the temporary transcript link as a RAG/audit source without risking confusion inside the active recovery thread.
Best division:
**Here, in this chat:** keep operational continuity and preserve the latest recovery state.
**New chat:** generate the structured document set from the temporary transcript plus the transition capsule.
I would create this document bundle:
“`text
README-HANDOFF.md
RECOVERY-STATE.yaml
REPAIR-LEDGER.tsv
VALIDATION-LOG.md
COMMAND-RUNBOOK.md
PDRIVE-RECONSTRUCTION-PLAN.md
CUSTOMER-STATUS-NOTES.md
REDACTION-GUIDE.md
PUBLIC-CASE-STUDY-OUTLINE.md
PRIVATE-FORENSIC-NARRATIVE.md
“`
The most important files are:
“`text
README-HANDOFF.md current state and next actions
RECOVERY-STATE.yaml machine-readable paths, hashes, confirmed repairs
REPAIR-LEDGER.tsv page/block -> physical block -> validation result
VALIDATION-LOG.md dblog/dbeng/dbping evidence
PDRIVE-RECONSTRUCTION-PLAN.md next phase plan
“`
For the new chat, start with something like:
“`text
We are continuing a B2 / FACTS SQL Anywhere database recovery.
Temporary transcript/audit source:
Treat the following transition capsule as authoritative for the current state. Use the transcript only to recover details, chronology, command history, and validation evidence.
Task:
Create a structured private-facing recovery document set:
README-HANDOFF.md
RECOVERY-STATE.yaml
REPAIR-LEDGER.tsv
VALIDATION-LOG.md
COMMAND-RUNBOOK.md
PDRIVE-RECONSTRUCTION-PLAN.md
REDACTION-GUIDE.md
PUBLIC-CASE-STUDY-OUTLINE.md
Do not invent missing facts. Mark uncertainty explicitly. Redact customer-sensitive material. Do not include credentials, tokens, passwords, router details, or private customer data.
“`
Then paste the transition capsule from this chat.
One more recommendation: before opening the new chat, add a short `README-HANDOFF.md` at the top of your temporary web page, containing the latest state. The transcript is valuable, but the clean-start milestone and `P:` reconstruction boundary should be immediately visible.
So my answer: **yes, I can help create them here, but the better engineering move is to do the structured documents in a fresh chat while this chat remains the live recovery field.**
—