When I try to start the Docker service I receive the following error:

Docker Service failed to start.

 

I noticed the docker.img file size is 2.15TB. I believe the docker.img is corrupt somehow. Therefore, I tried to delete the docker.img but the file will not get deleted.

 

Any help to restore my docker is appreciated.

 

The following snippet from the sys.log might be helpful.

 

Dec  5 22:21:32 emhttpd: shcmd (201): /usr/local/sbin/mount_image '/mnt/cache/system/docker/docker.img' /var/lib/docker 25
Dec  5 22:21:32 root: truncate: cannot open '/mnt/cache/system/docker/docker.img' for writing: Read-only file system
Dec  5 22:21:32 kernel: loop2: detected capacity change from 0 to 4194304000
Dec  5 22:21:32 kernel: BTRFS: device fsid b1587620-9193-4f4a-99ca-589fb7737f60 devid 1 transid 4014766 /dev/loop2 scanned by mount (30777)
Dec  5 22:21:32 kernel: BTRFS info (device loop2): using crc32c (crc32c-intel) checksum algorithm
Dec  5 22:21:32 kernel: BTRFS info (device loop2): using free space tree
Dec  5 22:21:32 kernel: BTRFS info (device loop2): bdev /dev/loop2 errs: wr 953, rd 0, flush 0, corrupt 0, gen 0
Dec  5 22:21:32 kernel: BTRFS info (device loop2): enabling ssd optimizations
Dec  5 22:21:32 root: ERROR: unable to resize '/var/lib/docker': Read-only file system
Dec  5 22:21:32 root: Resize device id 1 (/dev/loop2) from 1.95TiB to max
Dec  5 22:21:32 emhttpd: shcmd (203): /etc/rc.d/rc.docker start
Dec  5 22:21:32 root: starting dockerd ...

Please post the diagnostics.

Please see attached diagnostics.

 

Edited January 4, 20242 yr by clockwork-wizard

Dec  6 20:50:06 TWWServer kernel: BTRFS info (device dm-5): bdev /dev/mapper/sdc1 errs: wr 0, rd 0, flush 0, corrupt 24, gen 0
Dec  6 20:50:06 TWWServer kernel: BTRFS info (device dm-5): bdev /dev/mapper/sdd1 errs: wr 0, rd 0, flush 0, corrupt 24, gen 0

 

Btrfs is detecting data corruption on both devices, start by running memtest, after that suggest backing up what you can from the pool and re-formatting, docker image will also need to be recreated.