Open Stack

Would a virsh suspend/save/restore/resume operation accomplish similar
result as the localhost migration?

Best,
Favyen

On 05/13/2015 12:44 PM, Matt Van Winkle wrote:
> Yeah, something like that would be handy.
> 
> From: matt <matt at nycresistor.com<mailto:matt at nycresistor.com>>
> Date: Wednesday, May 13, 2015 10:29 AM
> To: "Daniel P. Berrange" <berrange at redhat.com<mailto:berrange at redhat.com>>
> Cc: Matt Van Winkle <mvanwink at rackspace.com<mailto:mvanwink at rackspace.com>>, "openstack-operators at lists.openstack.org<mailto:openstack-operators at lists.openstack.org>" <openstack-operators at lists.openstack.org<mailto:openstack-operators at lists.openstack.org>>
> Subject: Re: [Openstack-operators] Venom vulnerability
> 
> honestly that seems like a very useful feature to ask for... specifically for upgrading qemu.
> 
> -matt
> 
> On Wed, May 13, 2015 at 11:19 AM, Daniel P. Berrange <berrange at redhat.com<mailto:berrange at redhat.com>> wrote:
> On Wed, May 13, 2015 at 03:08:47PM +0000, Matt Van Winkle wrote:
>> So far, your assessment is spot on from what we've seen.  A migration
>> (if you have live migrate that's even better) should net the same result
>> for QEMU.  Some have floated the idea of live migrate within the same
>> host.  I don't know if nova out of the box would support such a thing.
> 
> Localhost migration (aka migration within the same host) is not something
> that is supported by libvirt/KVM. Various files QEMU has on disk are based
> on the VM name/uuid and you can't have 2 QEMU processes on the host having
> the files at the same time, which precludes localhost migration working.
> 
> Regards,
> Daniel
> 
> 
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