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Cache disk: Unmountable: wrong or no file system (diagnostic file included)

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Unraid have been running fine for 1,5 months now after I had to swap a few bad memory sticks.


I have not been accessing it for a few weeks, but when accessing today I found none of the dockers started. Obviously because of the error my Cache drive.

I tried rebooting, but I don't really understand the diagfiles. Any help on this is greatly appreciated.

tower-diagnostics-20260120-0012.zip

  • Community Expert

Type btrfs rescue zero-log /dev/nvme0n1p1 then restart the array and post new diags.

  • Community Expert

Pool mounted but still has some issues; as a first step, recommend running memtest, since btrfs is detecting data corruption on both devices.

  • Author

Ok. Will do that. If this AGAIN is memory errors, it is the 3rd time in 1 year. Wonder what to do if it is again the same thing.

  • Community Expert

If you had RAM issues before, the errors could be old ones, unless the stats were reset, they don't reset on their own or with a reboot:

image.png

  • Author

Oh, no. You were definitively right again. Several 1000 errors on the first memstick pair (the one I changed) in november. I have to pairs with 2x8gb on each stick.

Running a test on the other pair now... will post result on this... And a new diag file if this pair does not fail.

  • Community Expert

Jan 21 18:25:29 Selje-Tower kernel: BTRFS critical (device nvme1n1p1): unable to find chunk map for logical 140761711685632 length 8192

Jan 21 18:25:29 Selje-Tower kernel: BTRFS critical (device nvme1n1p1): unable to find chunk map for logical 140761711685632 length 4096

Btrfs is still finding some issues, likely the result of the bad RAM. My recommendation would be to back up and reformat the pool

  • Author

Backup and reformat the cache pool then I guess? Would not a backup now of the cache pool bring the errors back into the new pool?

  • Community Expert
3 minutes ago, tormi said:

Would not a backup now of the cache pool bring the errors back into the new pool?

Nope, since it will be a new filesystem.

  • Author

Hmm... Finally got my hardrives back up and running. I moved the backup of my cache - back to the cache, but I now get a message that I don't have any "No Docker containers installed". The docker.img is copied back to the cache...image.png

selje-tower-diagnostics-20260121-2348.zip

  • Author

Server has been up and running for 1,5 days now. It seems like all is ok from my side, and I have Dockers up and running again.

selje-tower-diagnostics-20260123-1017.zip If anybody wanna do a hopefully last check of the diag file I would greatly appreciate it.

  • Community Expert

Looks OK to me

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