Currently virt-df launches the appliance once for each guest. With these two patches the number of times the appliance launches is reduced to once every 26 block devices. In theory we could do better by adding support for disk hot-add (supported by qemu but not via libguestfs at the moment). However this patch is still an improvement on the current situation. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v