Unmountable: Unsupported or no file system

[M41k]

Hello everyone,

One of my two array devices reports the "Unmountable: Unsupported or no file system" error. I have already searched a little here in the forum for a solution and read that formatting and restoring should not necessarily be the first solution. However, I have not found a good answer as to what else I should do at this point.

 

I have already run through the Check Filesystem status, which has given me that there is an error and I should look into the log.

In addition, I started the array once without the affected disk and then restarted it so that the array emulated it.

I suspect the error occurred because the NAS had no power for a short time.

 

Can someone give me useful tips on the fix? Thank you very much for the effort.

cloud-diagnostics-20240227-1757.zip

[JorgeB]

19 minutes ago, M41k said:

that formatting and restoring should not necessarily be the first solution

That is not a solution, unless you want to delete everything in the disk.

 

There's filesystem corruption with xfs and btrfs filesystems, and this error from btrfs:

 

write time tree block corruption detected

 

usually means a RAM issue, start by running memtest

 

 

 

 

[M41k]

Thank you very much for the quick response. The test is currently underway. I still have an unused RAM memory here anyway, does it make sense to replace the old memory right away or better wait until the test has gone through?

[JorgeB]

I would wait for the test, but since memtest is only definite if errors are found it may still be worth replacing the RAM if nothing is.

[M41k]

I went through the test, but it didn't find any errors. I still exchanged the memory. What can I do next to solve my problem?

[JorgeB]

Check filesystem on disk1, run it without -n, and also run a correcting scrub on the pool.

[M41k]

The check immediately throws out the following error:

 

Quote

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.

 

Should I really export the test with the argument -L or are there other suggestions?

[JorgeB]

58 minutes ago, M41k said:

Should I really export the test with the argument -L

Yep.

[M41k]

I'm not sure if this has made my problem worse. After the process went through, all my shares are gone, but the hard drives are still 76% full. What should I do best?

[JorgeB]

Post new diags.

[M41k]

I take everything back, after a restart everything is back.