May 15, 20233 yr May 15 12:21:21 Tower emhttpd: Unmounting disks... May 15 12:21:21 Tower emhttpd: shcmd (1996844): /usr/sbin/zpool export cache May 15 12:21:21 Tower root: cannot unmount '/mnt/cache': pool or dataset is busy May 15 12:21:21 Tower emhttpd: shcmd (1996844): exit status: 1 May 15 12:21:21 Tower emhttpd: Retry unmounting disk share(s)... May 15 12:21:26 Tower emhttpd: Unmounting disks... May 15 12:21:26 Tower emhttpd: shcmd (1996846): /usr/sbin/zpool export cache May 15 12:21:26 Tower root: cannot unmount '/mnt/cache': pool or dataset is busy May 15 12:21:26 Tower emhttpd: shcmd (1996846): exit status: 1 May 15 12:21:26 Tower emhttpd: Retry unmounting disk share(s)... May 15 12:21:31 Tower emhttpd: Unmounting disks... root@Tower:/mnt# mount | grep cache /mnt/cache on /mnt/cache type zfs (rw,noatime,xattr,posixacl) /mnt/cache/system/docker/docker.img on /var/lib/docker type btrfs (rw,noatime,ssd,space_cache=v2,subvolid=5,subvol=/) /mnt/cache/system/docker/docker.img on /var/lib/docker/btrfs type btrfs (rw,noatime,ssd,space_cache=v2,subvolid=5,subvol=/) root@Tower:/mnt# umount /var/lib/docker/btrfs/ root@Tower:/mnt# umount /var/lib/docker Just- a heads up. Was wondering why the array wouldn't stop, after some researching, appears the docker images were still mounted. cache = zfs mirrored pool.
May 16, 20233 yr Community Expert Cannot reproduce, post diags in case there's something visible there.
May 19, 20233 yr Same issue here in 6.12.0-rc6. May 20 00:50:48 Server emhttpd: shcmd (14375): exit status: 1 May 20 00:50:48 Server emhttpd: Retry unmounting disk share(s)... May 20 00:50:49 Server flash_backup: adding task: /usr/local/emhttp/plugins/dynamix.my.servers/scripts/UpdateFlashBackup update May 20 00:50:53 Server emhttpd: Unmounting disks... May 20 00:50:53 Server emhttpd: shcmd (14376): /usr/sbin/zpool export cache May 20 00:50:53 Server root: cannot unmount '/var/lib/docker/zfs/graph/fbdd434d278a6b358e9f110837ca89f2bba5eff09a3b4cb74f2ed64d8de68e7a-init': unmount failed
May 20, 20233 yr 17 hours ago, sasbro97 said: Same issue here in 6.12.0-rc6. May 20 00:50:48 Server emhttpd: shcmd (14375): exit status: 1 May 20 00:50:48 Server emhttpd: Retry unmounting disk share(s)... May 20 00:50:49 Server flash_backup: adding task: /usr/local/emhttp/plugins/dynamix.my.servers/scripts/UpdateFlashBackup update May 20 00:50:53 Server emhttpd: Unmounting disks... May 20 00:50:53 Server emhttpd: shcmd (14376): /usr/sbin/zpool export cache May 20 00:50:53 Server root: cannot unmount '/var/lib/docker/zfs/graph/fbdd434d278a6b358e9f110837ca89f2bba5eff09a3b4cb74f2ed64d8de68e7a-init': unmount failed Really need to see full diagnostics. Also please post issues for -rc releases here.
May 31, 20233 yr Author On 5/20/2023 at 10:58 AM, limetech said: Really need to see full diagnostics. Also please post issues for -rc releases here. The next time this issue reproduces, I'll grab diagnostics for ya. It seems to be a non-consistent issue.
July 14, 20233 yr I had the same issue. Stopped all containers and turned off Docker to edit network settings and when I attempted to start docker again it could not because the image was already mounted. I could not find support online so I rebooted, it could not unmount the share with my docker image and eventually had an unclean shutdown and reboot. Not very useful without my diagnostics but figured I would also chime in. I am on the latest release 6.12.2.
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