[Libvir] Snapshots for Xen and KVM

[Richard W.M. Jones]

On Tue, Mar 11, 2008 at 12:54:37PM +0200, Gabriel Kaufmann wrote:
> Does anyone knows if Xen and KVM support snapshots (regardless if
> Libvirt provides the API for them).

It's currently on the Xen to-do list, but apart from some research
papers I'm not aware of them implementing it.  Perhaps recently.
Checkpointing is tricky to get right because you have to take a
snapshot of the memory and disk at exactly the same moment.

Note that neither Xen's live migration nor the domain save features
are real checkpoints, because they both only consider the memory.

> If yes, will libvirt add API for it?

If it's supported, then why not.

Rich.

-- 
Richard Jones, Emerging Technologies, Red Hat  http://et.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