Backup Strategy for KVM VMs on LV

[kalpana]

I've been experimenting with lvm prior to building a new Desktop on a new HD. I have, and am happy with, using rdiff-backup for things like /home that has it's own lv. I plan to create another lv to be used solely for kvm virtual machines. At the moment, on my 'old' Desktop, I use rsync to backup my kvm machines as they tend not to change much (they are all in a separate folder/mount point). Anyway .... when I migrate to logical volumes, and have one dedicated to my kvm virtual machines, I'm not sure what to do in terms of backup up the lv. Is rdiff-backup an appropriate tool for this kvm lv? (Note: I know in the lvm world snapshots are used and I'm trying to get my head around these re a Desktop machine. Having successfully used rdiff-backup for my /home lv I feel comfortable using rdiff-backup rather than a snapshot. For things like /home I cannot see, at the moment, the advantage of a snapshot over rdiff-backup).