I found that my unRaid server had crashed. I was able to restart it and when I logged in it showed that docker was offline. I tried to disable and re-enable the service. When that did not work I looked in the logs and it shows the following

 

Apr 21 13:24:38 ApollyonNAS kernel: BTRFS info (device loop2): using free space tree
Apr 21 13:24:38 ApollyonNAS kernel: BTRFS info (device loop2): has skinny extents
Apr 21 13:24:38 ApollyonNAS kernel: BTRFS critical (device loop2): corrupt leaf: root=1 block=109412352 slot=0, invalid root bytenr, have 4726735103 expect to be aligned to 4096
Apr 21 13:24:38 ApollyonNAS kernel: BTRFS error (device loop2): block=109412352 read time tree block corruption detected
Apr 21 13:24:38 ApollyonNAS kernel: BTRFS critical (device loop2): corrupt leaf: root=1 block=109412352 slot=0, invalid root bytenr, have 4726735103 expect to be aligned to 4096
Apr 21 13:24:38 ApollyonNAS kernel: BTRFS error (device loop2): block=109412352 read time tree block corruption detected
Apr 21 13:24:38 ApollyonNAS kernel: BTRFS error (device loop2): could not do orphan cleanup -5
Apr 21 13:24:38 ApollyonNAS root: mount: /var/lib/docker: can't read superblock on /dev/loop2.
Apr 21 13:24:38 ApollyonNAS kernel: BTRFS error (device loop2): open_ctree failed
Apr 21 13:24:38 ApollyonNAS root: mount error
Apr 21 13:24:38 ApollyonNAS emhttpd: shcmd (160): exit status: 1

 

I looked at the smart reports for my disks and while some show some non-critical errors it says that all disks have passed. I have attached the diagnostics.

 

Not sure where to look or what to do from here.

jrhnas-diagnostics-20220421-1330.zip

Docker image is corrupt, delete and recreate.