[Openstack-operators] Live-migration with nova

Ken Pepple ken.pepple at gmail.com
Tue Jun 28 02:45:38 UTC 2011

On Jun 27, 2011, at 9:00 PM, openstack-operators-request at lists.openstack.org wrote:
> Is live-migration support in other hypervisor (Xen, XenServer).
> I'm thinking about using glance as image service, and swift as backend store
> for glance, is it possible to do live-migration with this setup.
> And last question, is KVM the default and the target hypervisor of
> openstack, many openstack document suggest using KVM, I'm thinking about
> choosing KVM or Xen for our infrastructure.

On the Live Migration support: only KVM is supported at the current time AFAIK. To do live migration with KVM, you'll need a shared drive (so that each compute host can access the image), which would be separate from the glance/swift setup (it needs to be NFS share or something like that).

On the KVM default: KVM is not the default but it is probably the easiest to get up and running. Most people seem to use Xen/XCP/XenSource or KVM (although OpenStack supports many more …)


Ken Pepple
ken.pepple at gmail.com

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