So that's my scenario. I saw a backup fail last night so I started poking around and saw some BTFRS errors on my cache drive. Read in the forums I should run a scrub / balance so I did so (it couldn't fix two things) and then I rebooted. Now the server is running a parity check and the docker service won't start. I still see some errors on my cache drive. Looking for what I should look at / attempt next. Should I move the files from the cache to the array and wipe the cache drive? SMART test / stats say it's fine.

negzero-unraid-diagnostics-20241210-1031.zip

Edited December 10, 20241 yr by NegZero
added common problems screenshot

Btrfs is detecting data corruption, so recommend starting by running memtest

9 minutes ago, JorgeB said:

Btrfs is detecting data corruption, so recommend starting by running memtest

On a system that's been stable for years? Right now I'm using mover to get everything off the cache to the array just incase that SSD is about to die. Was that a good move? I'll follow-up with a memtest.

Just posting here to close the loop after about a week. This was an old gaming motherboard and XMP was enabled. It seems the memory overclock was resulting in sporadic corruption. Thanks a tonne @JorgeB as removing XMP seems to have done the trick.

Seeing a similar thing again @JorgeB could it be anything else? It always seems to be on the SSD / Cache (where appdata is of course)

 

Edited January 8, 20251 yr by NegZero

If these are new errors, it means data corruption is still occurring.

3 hours ago, JorgeB said:

If these are new errors, it means data corruption is still occurring.

I checked which file it is and it's com.plexapp.plugins.library.blobs.db which has caused issues for a while (and maybe is still residual corruption from before) I'll regenerate it and see what happens.

You should run a scrub to confirm 0 errors currently and then reset the btrfs stats errors, that way it's easy to know if new ones come up.