Comment 7 for bug 1670291

Hello, I've looked more into this.

Upstream does admit that shutdown/reboot commands via systemd may fail. And the recommendation there is to progressively use bigger hammers.

See: https://github.com/systemd/systemd/issues/3282

So i believe you should be trying to:

$ systemctl poweroff
$ systemctl -f poweroff
$ systemctl -ff poweroff

(or reboot, or whatever the comamnd you need/want)

Specifically, with upgrade from upstart to systemd, and re-exec, we may not shutdown cleanly, and that should be ok.