On Wed, Feb 02, 2011 at 11:48:11PM +1100, Justin Clift wrote: > On 02/02/2011, at 11:25 PM, Bruno Lamps wrote: > > I was using fedora 13 (kernel 2.6.32) in one machine and fedora 14 (kernel > > 2.6.35) in other > > Ahhh, that might be the problem. One of the "fundamental" things for > migration is that both > the source and destination hosts need to be *exactly* the same kernel > version, kvm version, etc.
That's not actually true. The requirement is that the destination must offer the same, or a superset of, the features currently configured for the guest on the source host. This basically means that the KVM version must be the same or newer, and the guest machine type must be available on both hosts. So migration with a OS family should work across version upgrades, eg from Fedora 13 to 14 to 15 should work in that direction. If you want to migrate in the reverse direction eg, from F15 to F14, you need to take extra care to set the guest machine type to a version that is available on both, and even then some problems may occur depending on how much older the target is than the source. Migration from Fedora to RHEL or vica-versa will not work at all due to different machine types. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| _______________________________________________ virt-tools-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/virt-tools-list
