Other • enabling watchdog causes systemd to hang at reboot

I perplexed about this, I installed watchdog on dietpi, I even tried this

```
aragorn:~# dpkg --status watchdog
Package: watchdog
Version: 5.16-2~rpt2
(...)

aragorn:~# cat /etc/systemd/system/watchdog.service.d/override.conf
[Unit]
Conflicts=reboot.target shutdown.target
```
reboot shows this on serial
```
[ OK ] Removed slice system-modpr…lice - Slice /system/modprobe.
[ OK ] Stopped target bluetooth.target - Bluetooth Support.
[ OK ] Stopped target graphical.target - Graphical Interface.
[ OK ] Stopped target rpcbind.target - RPC Port Mapper.
[ OK ] Stopped target timers.target - Timer Units.
[ OK ] Stopped dpkg-db-backup.tim… Daily dpkg database backup timer.
[ OK ] Stopped fstrim.timer - Discard unused blocks once a week.
[ OK ] Stopped logrotate.timer - Daily rotation of log files.
[ OK ] Stopped systemd-tmpfiles-c… Cleanup of Temporary Directories.
[ OK ] Stopped target time-set.target - System Time Set.
[ OK ] Closed systemd-rfkill.sock…l Switch Status /dev/rfkill Watch.
Unmounting mnt-btrfs_boot.mount - /mnt/btrfs_boot...
Unmounting mnt-firmware2.mount - /mnt/firmware2...
Unmounting mnt-sdcard.mount - /mnt/sdcard...
Unmounting mnt-sdcard_boot.mount - /mnt/sdcard_boot...
Starting dietpi-kill_ssh.s…m - DietPi-Kill_SSH on shutdown...
Stopping nfs-blkmap.servic…NFS block layout mapping daemon...
Stopping nfs-server.service - NFS server and services...
Stopping systemd-random-se…ice - Load/Save Random Seed...
Stopping watchdog.service - watchdog daemon... <<<<<<<< stopped hereh
[ OK ] Stopped nfs-blkmap.service… pNFS block layout mapping daemon.
[ OK ] Stopped ssh.service - OpenBSD Secure Shell server.
[ OK ] Unmounted mnt-btrfs_boot.mount - /mnt/btrfs_boot.
[ OK ] Unmounted mnt-firmware2.mount - /mnt/firmware2.
[ OK ] Unmounted mnt-sdcard.mount - /mnt/sdcard
```

but then it hangs, no reboot unless I use sysrq+b
and if I just do
reboot is aliased to `/etc/init.d/watchdog stop; \reboot'
and then reboot works fine, 100%

Any idea what's going on?

Statistics: Posted by marcmerlin — Sun Jul 06, 2025 10:57 pm — Replies 1 — Views 49

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