Ich sehe seit dem Upgrade auf Systemd 259 folgendes Verhalten beim Shutdown:
[ OK ] Reached target System Shutdown.
[ OK ] Reached target Unmount All Filesystems.
[ OK ] Reached target Late Shutdown Services.
[ OK ] Finished System Power Off.
[ OK ] Reached target System Power Off.
[ 25.289379] shutdown[1]: Failed to parse /proc/self/mountinfo: Operation not supported
[ 25.290346] shutdown[1]: Unable to unmount file systems: Operation not supported
[ 25.291269] shutdown[1]: Cannot enumerate swap partitions, no libmount support.
[ 25.292157] shutdown[1]: Unable to deactivate swaps: Operation not supported
[ 25.293468] shutdown[1]: Failed to parse /proc/self/mountinfo: Operation not supported
[ 25.294426] shutdown[1]: Unable to unmount file systems: Operation not supported
[ 25.295361] shutdown[1]: Cannot enumerate swap partitions, no libmount support.
[ 25.296247] shutdown[1]: Unable to deactivate swaps: Operation not supported
[ 25.297476] shutdown[1]: Could not detach DM /dev/dm-0: Device or resource busy
[ 25.298403] shutdown[1]: Unable to finalize remaining file systems, swap devices, DM devices, ignoring.
[ 25.333108] reboot: Power down
Mir scheint es, dass im shutdown-ramfs einfach libmount fehlt. Leider enden hier meine Kenntnisse. Keine Ahnung, wie ich das da hinzufügen kann.
Update: Gerade das hier gefunden.