I'm running Ubuntu server 15.10 with systemd and sometimes when I reboot or shut down the server it will just hang and never actually shut down.
I'm not sure where I should be looking to try and figure out what's causing it to hang. I'm pretty sure everything I see on the monitor is just the end of the system start up and not anything to do with the shut down process.
If anyone knows which logs or where I should be looking to see where the system is hanging, or anything I can do to get a more reliable reboot that would be awesome.
Thanks.