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"Unmountable: wrong or no file system" error on disk after unclean shutdown

Featured Replies

Title says it all. Unraid 7.0.1. I've found a few topics regarding this, but it seemed wise to check with you guys before doing anything that can't be undone.

 

Thanks!

unraid.png

chonker-diagnostics-20250406-1944.zip

Solved by trurl

  • Community Expert
1 minute ago, gretachini said:

found a few topics

Documentation linked at bottom of every forum page, and at the 'manual' link in bottom right corner of your Unraid webUI.

 

Check filesystem on disk5 from the webUI. Post the output.

  • Author

@trurl
Here is the output of the command. It was quite long so I saved it in a text file. After running this in the GUI, a "Fix" button popped up. If it's safe to proceed with clicking that, I will.

 

Thanks for your help.

disk5.txt

Edited by gretachini

  • Community Expert

That does look pretty messy, but we will have to fix and see what the consequences are.

 

Do you have another copy of anything important and irreplaceable?

 

  • Author

No, nothing irreplaceable.
I'll proceed with clicking Fix and get back to you with the output.

  • Author

@trurl
Here is the output upon clicking Fix:

Phase 1 - find and verify superblock...
Phase 2 - using internal log - zero log...
ERROR: The filesystem has valuable metadata changes in a log which needs to be replayed. Mount the filesystem to replay the log, and unmount it before re-running xfs_repair. If you are unable to mount the filesystem, then use the -L option to destroy the log and attempt a repair. Note that destroying the log may cause corruption -- please attempt a mount of the filesystem before doing this.
 

Edited by gretachini

  • Community Expert
  • Solution

Unraid has already determined the drive is unmountable, so you have to use -L

  • Author

Went ahead and performed it. It fixed the disk and it's mounted.

 

Thank you so much!

  • Community Expert

Repair has put a lost+found share on disk5 of things it couldn't figure out.

 

Browse into disk5, under Action, click + on lost+found, select Calculate from the popup, post the result.

  • Author

Here are the results.
Doesn't seem to be too much relative to how much data is residing on it currently.

 

Calculate Occupied Space

Name: lost+found
Location: disk5
Last modified: 54 minutes ago
Total occupied space: 3.48 GB
in 4 folders and 6 files

  • Community Expert

That doesn't seem bad at all.

 

Repair sometimes can't figure out what folder a file belongs in, and/or can't figure out the name of a folder/file.

 

Linux 'file' command can help figure out what kind of data is in a file so you can try to open it in an appropriate application to see what it is.

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