August 24, 20232 yr Hello all, unfortunately I am also one of the people who get the error message "/mnt/cache is busy" when trying to stop the array and shutting down the system. Nothing showed when entering lsof /mnt/cache. umount /dev/loop2 and umount /var/lib/docker not worked. Diagnosis attached. Thanks for you help. tower-diagnostics-20230824-1248.zip Edited August 24, 20232 yr by aurevo missing attachment
August 24, 20232 yr Community Expert It appears to be a problem with this container: Aug 24 12:38:30 Tower root: Error response from daemon: cannot stop container: cloudflareddns: tried to kill container, but did not receive an exit event
August 25, 20232 yr Author On 8/24/2023 at 1:30 PM, JorgeB said: It appears to be a problem with this container: Aug 24 12:38:30 Tower root: Error response from daemon: cannot stop container: cloudflareddns: tried to kill container, but did not receive an exit event Curiously, there were actually no problems with the container before. Is it possible to force the termination?
August 26, 20232 yr Author On 8/25/2023 at 4:36 PM, JorgeB said: Not AFAIK, Unraid is already trying to force it and failing. So I have to kill the container myself before stopping the array or what can I do to shutdown my Tower? The Docker itself was stopped, so don't know how a container can prevent my Tower from shutdown. It is no option to hard shutdown the device each time and do a parity check.
August 26, 20232 yr Community Expert 6 hours ago, aurevo said: The Docker itself was stopped Do you mean that container or the docker service? Docker service is not stopping because of that container: Aug 24 12:38:30 Tower root: stopping dockerd ... Aug 24 12:38:31 Tower root: waiting for docker to die ... ### [PREVIOUS LINE REPEATED 14 TIMES] ### Aug 24 12:38:45 Tower root: docker will not die! Aug 24 12:38:45 Tower emhttpd: shcmd (2833): exit status: 1 Aug 24 12:38:45 Tower emhttpd: shcmd (2834): umount /var/lib/docker Aug 24 12:38:45 Tower root: umount: /var/lib/docker: target is busy. Suggest posting in that container support thread/discord, assuming one exists, to try and find out why it's not getting killed:
August 28, 20232 yr Author On 8/27/2023 at 1:18 AM, JorgeB said: Do you mean that container or the docker service? Docker service is not stopping because of that container: Aug 24 12:38:30 Tower root: stopping dockerd ... Aug 24 12:38:31 Tower root: waiting for docker to die ... ### [PREVIOUS LINE REPEATED 14 TIMES] ### Aug 24 12:38:45 Tower root: docker will not die! Aug 24 12:38:45 Tower emhttpd: shcmd (2833): exit status: 1 Aug 24 12:38:45 Tower emhttpd: shcmd (2834): umount /var/lib/docker Aug 24 12:38:45 Tower root: umount: /var/lib/docker: target is busy. Suggest posting in that container support thread/discord, assuming one exists, to try and find out why it's not getting killed: For now I stopped container by hand and disabled autostart because I don't really need that container. But today I wanted to stop array because of btrfs errors and now I have the same "cache is busy" error messagen. Logs attached, appreciate your help. tower-diagnostics-20230828-1022.zip
August 28, 20232 yr Community Expert It's a different issue now, both pools are busy: Aug 28 10:07:53 Tower emhttpd: shcmd (532): umount /mnt/cache Aug 28 10:07:53 Tower root: umount: /mnt/cache: target is busy. Aug 28 10:07:53 Tower emhttpd: shcmd (532): exit status: 32 Aug 28 10:07:53 Tower emhttpd: shcmd (533): umount /mnt/cache_appdata Aug 28 10:07:53 Tower root: umount: /mnt/cache_appdata: target is busy But cannot see with what, make sure no SSH sessions opened.
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