On 04/01/2011 12:10 AM, SanitYey o wrote: Not sure why you got a failure here; xen migration should indeed work (although I haven't tried it myself, since I mostly use kvm). Not all hypervisors can support all APIs. In some cases, it's merely because no one has contributed the glue code to query the information available from the hypervisor and convert it into the libvirt reply, in other cases it is truly because the hypervisor does not track that information in the first place. I'm assuming that this is still in regards to your xen:/// connection? Not sure what failed there; does looking under /var/log/libvirt for a domain-specific log give any more clues? Same category as 2. I don't think snapshot-create has been ported to xen yet; and even for qemu-kvm, it pretty much only works with qcow2 images at the moment. Again, I'm not sure if this has been ported to xen. You are welcome to help out by writing code for some of the missing functionality! Most of the current libvirt contributors tend to use qemu-kvm or the brand-new libxenlight interface to xen, so we could use more support from active xen users in developing code to improve the older xen:/// management interfaces. -- Eric Blake eblake(a)redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org