As I read the document, to enable migration between hosts, I must have kvm running with the instance dir mounted via NFS on both controller and compute node. 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20110627/93ee5bab/attachment-0002.html>