Docker Service failed to start / Freezing system

[indecisive-haunting5956]

Hello Everyone!

 

I'm having significant issues with my Unraid Server since weeks now. Coming from 1. Spontanous Shutdowns, going over to 2. a freezing system to 3. Docker being unable to start.

 

Long story short, My recent issues now is that the Docker Service is failing to start.

 

System is running on a brand new NUC12 I5 setup, 64GB RAM, 1TB NVMVE Cache, 2TB Parity disk, 2 data disks. Since I have this hardware in place my "spontaneous shutdowns" disappeared, but I still have a freezing system roughly once per day. Only a hard shutdown is helping here.
Since today after the restart the Docker service is not starting anymore.

I already made a downgrade from 6.12 to 6.11 as I made the update a couple of days ago and thought this might be linked. But the error is staying the same.

 

I really hope that you might have reasonable insights helping me with my issue(s). --> Impact? My full smart home is currently not working and my wife is getting crazy 😞

 

Thanks a lot in advance!

tower-diagnostics-20230822-1128.zip

[itimpi]

There are various error messages after attempting to mount the docker.img file:

Aug 22 11:11:09 Tower kernel: BTRFS info (device loop2): start tree-log replay
Aug 22 11:11:09 Tower kernel: BTRFS error (device loop2): incorrect extent count for 1372585984; counted 8726, expected 8727
Aug 22 11:11:09 Tower kernel: BTRFS: error (device loop2) in btrfs_replay_log:2500: errno=-5 IO failure (Failed to recover log tree)
Aug 22 11:11:09 Tower root: mount: /var/lib/docker: can't read superblock on /dev/loop2.
Aug 22 11:11:09 Tower root:        dmesg(1) may have more information after failed mount system call.
Aug 22 11:11:09 Tower kernel: BTRFS error (device loop2: state E): open_ctree failed

 

This suggest this file is corrupt and needs to be recreated.

 

[indecisive-haunting5956]

Ok, this really helped. Thanks a lot! I have just deleted the vdisk and re-created it as described in the documentation.

 

Any view from your side how to identify the root cause for the "freezing system"? Do I need to enable additional logging or something like this?

[itimpi]

34 minutes ago, indecisive-haunting5956 said:

Do I need to enable additional logging or something like this

You could try enabling the syslog server to get a log that can survive a reboot.