After a recent restart Docker won't start. I tried stopping the array, as well as restarting completely.

 

I even attempted to manually restart my daemon which yielded this:

 

root@STower24:~#  /etc/rc.d/rc.docker stop
rc.docker: Stopping containers...
rc.docker: Stopping network...
rc.docker: Stopping Docker daemon...
rc.docker: Docker daemon...  Already stopped.
root@STower24:~#  /etc/rc.d/rc.docker start
rc.docker: Starting Docker daemon...
rc.docker: Docker daemon...  No image mounted at /var/lib/docker.
rc.docker: Starting network...

 

stower24-diagnostics-20241229-1752.zip

Seems like your docker image file has an issue

Dec 29 17:31:16 STower24 kernel: BTRFS error (device loop2): parent transid verify failed on logical 7820394496 mirror 1 wanted 645367 found 645369
Dec 29 17:31:16 STower24 kernel: BTRFS error (device loop2): parent transid verify failed on logical 7820394496 mirror 2 wanted 645367 found 645369
Dec 29 17:31:16 STower24 kernel: BTRFS error (device loop2): failed to read block groups: -5
Dec 29 17:31:16 STower24 root: mount: /var/lib/docker: can't read superblock on /dev/loop2.



took a bit to find

https://docs.unraid.net/unraid-os/manual/docker-management/#re-create-the-docker-image-file
 

Edited December 29, 20241 yr by Mainfrezzer

Thanks.

 

It keeps happening with BTRFS. Already had changed my cache SSD to XFS a few months back due to other issues. Now I did the same for my Docker image. Has been more stable so far.