Hi there,

 

What happened:

1. My docker containers nearly all went offline and upon investigating I found the error "Drive mounted read-only or completely full. Begin Investigation Here: UNRAID MAIN" in the plugin "Fix common problems"
2. Created a diagnostics package which is attached. 
3. Looked at cache drive, was normal healthy, had 50% space free etc
4. Figured I might need to reboot into "maintenance mode" and do a check filesystem on the cache drive, but during the stopping process disk 18 and my cache drive we're failing to unmount and it kept retrying. 
5. Eventually, I just clicked reboot and now I can't find my cache drive and it has been unassigned. 

 

A side note, a few hours before I believe my "Unassigned device ssd", which I use for incoming temp downloaded files to unpack, was full and I cleared it and I don't believe I did anything else. 

 

I'm now a bit scared to do anything as in hindsight I should have backed-up my cache drive before the reboot. 

 

Thanks in advance!

 

Pre-Reboot-Cache-Readonly-diagnostics-20210428-1020.zip Post-Reboot-Cache-Drive-Unavailable-diagnostics-20210428-1046.zip

Cache device dropped offline earlier:

 

Apr 27 15:52:31 Xionas kernel: nvme nvme0: Device not ready; aborting reset, CSTS=0x1
Apr 27 15:52:31 Xionas kernel: nvme nvme0: Removing after probe failure status: -19
Apr 27 15:53:02 Xionas kernel: nvme nvme0: Device not ready; aborting reset, CSTS=0x1

 

Unless it died, power cycling the server (not just rebooting) should bring it back.

@JorgeB, Thank you very much for the fast response! That indeed fixed everything and I'm currently running everything again!