Hi,
(a) Is cloning guests useful for you or not? Often or infrequently?
I'm almost never do that.
Usually I use qcow2 copy-on-write images for testing, so I can easily
rollback stuff by just zapping and re-creating the copy-on-write image.
When I need a fresh VM I install one. Have kickstart in place for
RHEL/Fedora guests. Also a custom windows xp install cd which
autoinstalls via unattended.txt, so I don't have to babysit the
installs. Includes sp3 and some extra drivers (e1000, virtio-net, ...) too.
cheers,
Gerd