I have a situation that is occurring, which is preventing me from being able to stop the array or even successfully issue a shutdown command from the CLI.
I did find one article from 2013 referencing an issue with RC13, but I haven't found any discussion regarding newer releases.
I'm running 6.2.4 with 14 drives + parity + boot; 12GB RAM; 2 - Xeon 1.??GHz. The system has been stable until this last week when I removed a handful of unused Docker containers and was preparing to shrink the array following 'Clear Drive Then Remove Drive' method from the following article:
I (of course) wouldn't expect any changes to have led to this behavior, but I wanted to present the 'what's changed?' answers up front.
Dynamix WebUI continues to report 'Spinning up all drives...' however the device lists reports all drives were spun up before initiating the stop command. Also of note, the WebUI is no longer responsive and will not allow new sessions to be established.
From the CLI, docker images reports the docker daemon is not currently running (which it was before initiating the array stop) and ps eaf 6 serial TTYs listening, my active pts session, and the ps eaf query, so there don't appear to be any active handles open to mounted disks. The command "fuser -mv /mnt/disk* /mnt/user/*" does return a number of processes items pasted below due to the length of snip.
Syslog output shows the following errors recurring:
Dec 2 23:44:04 CENTRAL emhttp: Retry unmounting user share(s)...
Dec 2 23:44:09 CENTRAL emhttp: shcmd (12033): set -o pipefail ; umount /mnt/user |& logger
Dec 2 23:44:09 CENTRAL root: umount: /mnt/user: target is busy
Dec 2 23:44:09 CENTRAL root: (In some cases useful info about processes that
Dec 2 23:44:09 CENTRAL root: use the device is found by lsof( or fuser(1).)
Dec 2 23:44:09 CENTRAL emhttp: err: shcmd: shcmd (12033): exit status: 32
Dec 2 23:44:09 CENTRAL emhttp: shcmd (12034): rmdir /mnt/user |& logger
Dec 2 23:44:09 CENTRAL root: rmdir: failed to remove '/mnt/user': Device or resource busy
Dec 2 23:44:09 CENTRAL emhttp: shcmd (12035): rm -f /boot/config/plugins/dynamix/mover.cron
Dec 2 23:44:09 CENTRAL emhttp: shcmd (12036): /usr/local/sbin/update_cron &> /dev/null
Dec 2 23:44:09 CENTRAL emhttp: Retry unmounting user share(s)...