I ran into an interesting problem with my new server the other day.
Due to a hardware problem with an external USB hard drive, I had to reboot the XEN host.
I had to do the reboot remotely … so I couldn’t intervene if something went wrong. Yes, you guessed it, something did go wrong.
When I finally got home I found the system trying to boot ‘bree’ … which is one of the XEN guest machines.