On 05/03/14 15:09, Karl Johnson wrote: > Hello, > > I've been using Xen4CentOS for the last 3 months. It's working fine and > dom0/domUs are stable but the server does a kernel panic when doing a > reboot and the server has to be hard reset manually. It has kernel panic > on the 3 last reboot. There is a xenbus device still present and during shutdown it is trying to set it to CLOSED but at this point xenstored isn't running and the xenbus write stalls. Do you have VMs that are still running when you attempt a reboot? If so shutting them down will likely avoid this. Can you provide the output of xenstore-ls prior to attempting a reboot? David