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XFS - astronomical file sizes

Posted: Wed Jan 01, 2025 2:14 pm
by resonator79
I recently bought R-Studio 9 for Windows (having been a user on macOS way back when), trying to undelete a few files from Unraid XFS drives;
I did the usual, scan, analyzing, finding the files - however, unlike with NTFS and HFS+, some of the files have astronomical file sizes, and are not recoverable - see screenshot
r-studio xfs recovery.png
The deletion happened during a SyncThing mishap, and the data has very likely not been overwritten, since I pretty much immediately (within minutes) shutdown the server and went at it, yet R-Studio says "below average".

Is there any chance of getting back these files? Am I missing a feature of R-Studio maybe?

Thank you.

Re: XFS - astronomical file sizes

Posted: Thu Jan 02, 2025 10:04 am
by Alt
Looks like the file system is severely damaged. Cannot say more without deep inspection of the file system.
I'll try to find our what may cause such damages.
Right-click the files and select Get Info on the context menu. This information may give some more clues.

Re: XFS - astronomical file sizes

Posted: Thu Jan 02, 2025 5:13 pm
by resonator79
Name: Totale-Newmie 1152p50 TopazAI [ULY0].avi
Location: Root\backup\Video Projects\Estate 2007-04-06 Arena Wien\DV Tapes 50p 2x\Totale-Newmie 1152p50 TopazAI [ULY0].avi
Id: [480000073376bd0]
Parent Id: [484000073376bcb]
Size: 2.00 EB (2,251,834,271,989,760 Bytes)
Flags: deleted, link target
Link: Totale-Newmie 1152p50 TopazAI [ULY0].avi
Created: 14.04.2024 19:56:05
Modified: 22.07.2021 02:36:40
Accessed: 14.04.2024 19:56:05
Permission: --------- (0)
Owner: 1001
Group: 100
File type: Failed to detect.
Recovery chances: Below Average (Signature(Corrupted), Beginning overwritten by existing file)

Thank you.

Re: XFS - astronomical file sizes

Posted: Fri Jan 03, 2025 2:46 am
by resonator79
Side note - there's another file I'm looking for on another drive of the Unraid array; same properties, 2EB size. I somehwat doubt that both those drives have "severely corrupted" filesystems, as they've been running inside the array for over a year, and there weren't any problems.

Re: XFS - astronomical file sizes

Posted: Fri Jan 03, 2025 1:41 pm
by Alt
File type: Failed to detect.
Recovery chances: Below Average (Signature(Corrupted), Beginning overwritten by existing file)
For some reasons the first sectors are damaged. Did you scan disks for Known File Types? This may help.
It's really hard to give advice without thorough inspection of the file system.

Re: XFS - astronomical file sizes

Posted: Mon Jan 06, 2025 1:17 pm
by resonator79
I rescanned the drive, making sure all video formats were selected. Same outcome.
Would it help to upload the scan file somewhere so you can take a look at it?

Re: XFS - astronomical file sizes

Posted: Mon Jan 06, 2025 4:53 pm
by Alt
resonator79 wrote:
Mon Jan 06, 2025 1:17 pm
I rescanned the drive, making sure all video formats were selected. Same outcome.
Would it help to upload the scan file somewhere so you can take a look at it?
I will ask our profs.

Re: XFS - astronomical file sizes

Posted: Fri Jan 10, 2025 2:02 pm
by resonator79
Can I raise a proper support ticket maybe?

Re: XFS - astronomical file sizes

Posted: Fri Jan 10, 2025 2:12 pm
by Alt
resonator79 wrote:
Fri Jan 10, 2025 2:02 pm
Can I raise a proper support ticket maybe?
Well, this is a good idea. You'll connect to them directly.