Backup utility for Libvirt / qemu / kvm supporting incremental and differential backups + instant recovery (agentless).

BackROLL is a KVM guest backup software

Backup KVM host and guests to external storage

kvm cold backup shell script, naive but always works.

Back up your KVM images using rsync or virtsync

QEMU/KVM Libvirt incremental backup using external snapshots

Exadata KVM

Script to back up and restore a data image with maximum compression (KVM & XEN)