KVM guests: graceful shutdown upon host reboot

[Roderick B. Greening]

On Thursday, May 19, 2011 04:09:23 PM jurgen.depicker at let.be wrote:
> Hi all.
> 
> Today I mistakenly typed 'reboot' in the wrong terminal, which made me
> remember one of my todos: take care of a graceful shutdown of all running
> VM guests.  My VM host just killed all processes and rebooted, which was
> not really appreciated by all running guests, as one might understand.
> 
> According to
> http://serverfault.com/questions/200751/can-kvm-suspend-or-shutdown-guests-a
> utomatically-on-host-shutdown this is taken care of already by some souls at
> RedHat (and Fedora) with an init script called libvirt-guests.
> 
> On http://libvirt.org/news.html I see that it exists at least since
> version 0.8.2, but on Ubuntu 11.04 (libvirt 0.8.8) it's not there. On
> 10.10 (0.8.3) neither, though I find some reference to it on
> https://launchpad.net/ubuntu/natty/+source/libvirt/0.8.8-1ubuntu1
> 
> Does anybody have an idea about why I cannot find this script on Ubuntu? T
> seems to be in line with the policy of supporting KVM for server
> virtualization (which is my use case) and it does eem to be quite
> interesting to have!
> Greetings, Jurgen

I found the following: https://docs.google.com/Doc?id=drjq7vn_0ctn8k3dd

Look at section 5.2 for a possible solution.

Perhaps this is something we can have reviewed by the maintainer of libvirt in 
Ubuntu and see if we should implement it.