[Solved] Docker Service failed to start: root: ERROR: unable to resize '/var/lib/docker': Read-only file system

[mikesp18]

Any ideas? Plex was running, so I tried a restart and got an error 403.  Thinking Docker image corruption, I tried deleting to rebuild it. But the Docker image wouldn't restart with the "Docker Service failed to start error displayed in the Docker Tab. A look in the Syslog shows "root: ERROR: unable to resize '/var/lib/docker': Read-only file system". Now I've learned to post here before a restart from stupidity in the past. Any help?

 

orcrist-diagnostics-20220307-2310.zipsyslog-192.168.86.113.log.zip

Edited March 13, 2022 by mikesp18

[JorgeB]

Pool filesystem is corrupt, best bet is to backup, reformat and restore the data.

 

There's also this:

 

Mar  7 11:23:39 Orcrist kernel: macvlan_broadcast+0x116/0x144 [macvlan]
Mar  7 11:23:39 Orcrist kernel: macvlan_process_broadcast+0xc7/0x10b [macvlan]

 

Macvlan call traces are usually the result of having dockers with a custom IP address, upgrading to v6.10 and switching to ipvlan might fix it (Settings -> Docker Settings -> Docker custom network type -> ipvlan (advanced view must be enable, top right)), or see below for more info.

https://forums.unraid.net/topic/70529-650-call-traces-when-assigning-ip-address-to-docker-containers/

See also here:

https://forums.unraid.net/bug-reports/stable-releases/690691-kernel-panic-due-to-netfilter-nf_nat_setup_info-docker-static-ip-macvlan-r1356/

[mikesp18]

JorgeB, thanks so much. You've already been a big help to me. I have that other thread in general support going about the MACD land problem. I just re-enabled it yesterday but I don't want to drag this thread into that.

 

Could you give me some tips on back up the cache pool, and reformat it.

[JorgeB]

You just need to copy anything important to the array or other pool/unassigned device, you can use your favorite tool for that, e.g. midnight commander (mc on the console), when that's done stop the array and wipe the pool devices with:

blkdiscard /dev/sdX

then start the array and you'll have the option to format the pool.