I have a server set up with a single cache drive. Based on what I've read online, it's possibly a file system issue and the disc needs reformating.

 

Since the cache drive is set to read-only, I'm unable to set the contents of the shares on the cache drive to the Array and invoke the mover. My plan is to follow the steps outlined in this post.

https://forums.unraid.net/topic/93846-solved-btrfs-error-with-new-system-m2-ssd/?tab=comments#comment-867992

 

I just wanted to check this was the correct approach in my case.

 

Also, I'm fairly sure I understand these aspects but just for peace of mind -

1. Is the code provided meant to be entered in the Unraid web terminal? ie. the >_ icon at the top right of the GUI
2. Is the (SOMEDISC) mentioned in the code a disc on the array? ie. disc1 / disc2 / etc. Presumably once I've restored the cache drive I can delete this (I have Dynamix installed)

 

My plan is to swap the filesystem from BTRFS to ZFS when I do this.

 

server-2023-diagnostics-20250104-1000.zip

Balance is crashing and aborting, but btrs is detecting data corruption, recommend running memtest first, then you can backup and reformat the pool.

I'm getting a fail on memtest. I've got two stick of RAM so will try running each individually to see which is causing the error. If both are at fault I have another set I can test. Thanks for the advice.

I've removed one of the sticks and got a pass on memtest. Cache drive is still in read-only mode on reboot. I've attempted to backup the contents of the cache however some files/attrs were not transferred. Lots of "read errors mapping" errors, mostly seem to be Plex files. - metadata and application support.

 

Looks like it managed 152/161 GB.

 

I have a a few backups from the Appdata Backup / Restore plugin spread over the last few weeks.

server-2023-diagnostics-20250104-1555.zip

Bad RAM can cause a lot of damage, try to copy what you can, the rest may need to be restored from a backup or recreated.

Have now replaced my RAM with new sticks, reformated the cache drive and restored data. Running a check on everything now but it's all is looking good. Thanks for the help and advise.