/mnt/cache/system': pool or dataset is busy

[NeoDude]

This seems to be an ongoing issue, whenever I try to stop the Array, I get this repeating in the log...

 

Aug  7 12:49:52 Gandalf root: cannot unmount '/mnt/cache/system': pool or dataset is busy
Aug  7 12:49:52 Gandalf emhttpd: shcmd (336): exit status: 1
Aug  7 12:49:52 Gandalf emhttpd: Retry unmounting disk share(s)...

This also results in a Parity Check after every reboot.

I've seen others with the issue solve it by updating to the latest version, but I'm already on the latest version. Any ideas? Diags Attached.

 

gandalf-diagnostics-20230807-1248.zip

[JorgeB]

Aug  7 12:40:12 Gandalf root: stopping dockerd ...
Aug  7 12:40:14 Gandalf emhttpd: shcmd (166): umount /var/lib/docker
Aug  7 12:40:14 Gandalf root: umount: /var/lib/docker: target is busy.

Docker is not unmounting, not sure why, if you stop the docker service first does it unmount?

[NeoDude]

2 hours ago, JorgeB said:

Aug  7 12:40:12 Gandalf root: stopping dockerd ...
Aug  7 12:40:14 Gandalf emhttpd: shcmd (166): umount /var/lib/docker
Aug  7 12:40:14 Gandalf root: umount: /var/lib/docker: target is busy.

Docker is not unmounting, not sure why, if you stop the docker service first does it unmount?

Yes

[JorgeB]

Strange, but looks like a bug.

[JorgeB]

Please retest after booting in safe mode to rule out any plugin or extra packages issues.

[NeoDude]

18 hours ago, JorgeB said:

Please retest after booting in safe mode to rule out any plugin or extra packages issues.

Weird. When I rebooted into safe mode, everything unmounted fine. Both rebooting into safe mode, and then rebooting normally. No issues. 

[JorgeB]

Possibly there was something else preventing /var/lib/docker from unmounting, like an opened ssh session for example.

[NeoDude]

2 hours ago, JorgeB said:

Possibly there was something else preventing /var/lib/docker from unmounting, like an opened ssh session for example.

Perhaps, but it's been happening consistently up until today. I'll keep an eye on it