This type of delay trying to restart or shutdown often happens here on far
more than a single installation. The instant case is 14.0.12 on host ab560
running Bullseye. Notable slices from journalctl -b -1:
Dec 14 20:55:56 ab560 systemd[1]: dev-hugepages.mount: Succeeded.
Dec 14 20:55:56 ab560 systemd[1]: proc-sys-fs-binfmt_misc.automount: Got hangup/error on
autofs pipe from kernel. Likely our automount point has been unmounted by someone or
something else?
Dec 14 20:55:56 ab560 systemd[1]: proc-sys-fs-binfmt_misc.automount: Failed with result
'unmounted'.
Dec 14 20:55:56 ab560 systemd-logind[532]: System is rebooting.
Dec 14 20:55:56 ab560 systemd[1]: Stopping Session 3 of user root.
Dec 14 20:55:56 ab560 systemd[1]: Removed slice system-modprobe.slice.
...
Dec 14 20:55:56 ab560 watchdog[773]: stopping daemon (5.16)
Dec 14 20:55:56 ab560 systemd[1]: Stopping watchdog daemon...
Dec 14 20:55:56 ab560 systemd[1]: nfs-blkmap.service: Main process exited, code=exited,
status=1/FAILURE
Dec 14 20:55:56 ab560 systemd[1]: nfs-blkmap.service: Failed with result
'exit-code'.
Dec 14 20:55:56 ab560 systemd[1]: Stopped pNFS block layout mapping daemon.
Dec 14 20:55:56 ab560 systemd[1]: session-3.scope: Succeeded.
...
Dec 14 20:55:56 ab560 systemd[1]: Reached target Unmount All Filesystems.
Dec 14 20:55:56 ab560 systemd[1]: user-runtime-dir(a)0.service: Succeeded.
Dec 14 20:55:56 ab560 systemd[1]: Stopped User Runtime Directory /run/user/0.
Dec 14 20:55:56 ab560 systemd[1]: Removed slice User Slice of UID 0.
Dec 14 20:55:56 ab560 systemd[1]: user-0.slice: Consumed 10.876s CPU time.
Dec 14 20:55:56 ab560 systemd[1]: watchdog.service: Control process exited, code=exited,
status=1/FAILURE
Dec 14 20:55:56 ab560 systemd[1]: watchdog.service: Failed with result
'exit-code'.
Dec 14 20:55:56 ab560 systemd[1]: Stopped watchdog daemon.
Dec 14 20:55:56 ab560 systemd[1]: watchdog.service: Triggering OnFailure= dependencies.
Dec 14 20:55:56 ab560 systemd[1]: Requested transaction contradicts existing jobs:
Transaction for wd_keepalive.service/start is destructive (systemd-sysctl.service has
'stop' job queued, >
Dec 14 20:55:56 ab560 systemd[1]: watchdog.service: Failed to enqueue OnFailure= job,
ignoring: Transaction for wd_keepalive.service/start is destructive
(systemd-sysctl.service has 'stop'>
Dec 14 20:55:56 ab560 systemd[1]: Stopped target Multi-User System.
...
Dec 14 20:55:56 ab560 systemd[1]: smbd.service: Succeeded.
Dec 14 20:55:56 ab560 systemd[1]: Stopped Samba SMB Daemon.
Dec 14 20:55:56 ab560 nmbd[528]: [2021/12/14 20:55:56.728880, 0]
../../source3/nmbd/nmbd.c:59(terminate)
Dec 14 20:55:56 ab560 nmbd[528]: Got SIGTERM: going down...
Dec 14 20:55:56 ab560 systemd[1]: Stopping Samba NMB Daemon...
Dec 14 20:55:56 ab560 systemd[1]: hddtemp.service: Succeeded.
Dec 14 20:55:56 ab560 systemd[1]: Stopped LSB: disk temperature monitoring daemon.
Dec 14 20:55:56 ab560 systemd[1]: nmbd.service: Succeeded.
Dec 14 20:55:56 ab560 systemd[1]: Stopped Samba NMB Daemon.
Dec 14 20:55:56 ab560 systemd[1]: Stopped target Network is Online.
Dec 14 20:56:06 ab560 systemd-logind[532]: Failed to stop user service
'user(a)0.service'ice', ignoring: Transport endpoint is not connected
Dec 14 20:57:26 ab560 systemd[1]: tdm.service: State 'stop-sigterm' timed out.
Killing.
Dec 14 20:57:26 ab560 systemd[1]: tdm.service: Killing process 732 (tdm) with signal
SIGKILL.
Dec 14 20:57:26 ab560 systemd[1]: tdm.service: Killing process 1119 (tdm) with signal
SIGKILL.
Dec 14 20:57:26 ab560 systemd[1]: tdm.service: Killing process 1120 (tdm_greet) with
signal SIGKILL.
Dec 14 20:57:26 ab560 systemd[1]: tdm.service: Killing process 1138 (tdm_greet) with
signal SIGKILL.
Dec 14 20:57:26 ab560 systemd[1]: tdm.service: Main process exited, code=killed,
status=9/KILL
Dec 14 20:57:27 ab560 systemd[1]: tdm.service: Failed with result 'timeout'.
Dec 14 20:57:27 ab560 systemd[1]: Stopped Trinity Display Manager.
Dec 14 20:57:27 ab560 systemd[1]: tdm.service: Consumed 5.134s CPU time.
Dec 14 20:57:27 ab560 systemd[1]: Stopping User Login Management...
...
Dec 14 20:57:27 ab560 systemd[1]: Reached target Reboot.
Dec 14 20:57:27 ab560 systemd[1]: Shutting down.
Dec 14 20:57:27 ab560 systemd[1]: Using hardware watchdog 'iTCO_wdt', version 0,
device /dev/watchdog
Dec 14 20:57:27 ab560 systemd[1]: Set hardware watchdog to 10min.
Dec 14 20:57:27 ab560 kernel: watchdog: watchdog0: watchdog did not stop!
Dec 14 20:57:27 ab560 systemd-shutdown[1]: Syncing filesystems and block devices.
Dec 14 20:57:27 ab560 systemd-shutdown[1]: Sending SIGTERM to remaining processes...
Dec 14 20:57:27 ab560 systemd-journald[288]: Journal stopped
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata