KVM guests: graceful shutdown upon host reboot

[Nicolas Barcet]

On 05/19/2011 04:41 PM, Roderick B. Greening wrote:
> 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. 

Bug #350936 [1] is covering this topic. At the moment the best solution
is to install mollyguard, but I think a proper solution is being
discussed...

[1]https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/350936

Nick


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