[libvirt] Allow to migrate to same host?

[Daniel P. Berrange]

On Tue, Aug 09, 2011 at 05:46:37PM +0800, Osier Yang wrote:
> The request is from a PhD stdudent in France, he is developing some
> distributed system based on libvirt, before deploying the codes to real
> instances, he want to test it on his own box first.
> 
> Libvirt checks if it's migrating to same host by comparing the hostname,
> I'm wondering if we can add some flag to switch the checking on/off,
> (probally a new property in qemu.conf?), so that one can test the migration
> on same host just for development purpose.

It isn't as simple as just removing the check, because libvirt also
checks other things like name+uuid uniqueness for the VMs. Also you
run the risk of deadlocking libvirtd itself

Daniel
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