Virsh Snapshots

• virsh snapshot-create Create a snapshot from XML. See also: qemu-img and qemu-img info
• virsh snapshot-create-as Create a snapshot from a set of args.
• virsh snapshot-current Get or set the current snapshot
• virsh snapshot-dumpxml VM_MACHINE_NAME SNAPSHOT_NAME Dump XML for a domain snapshot
• virsh snapshot-edit edit XML for a snapshot
• virsh snapshot-info snapshot information. (virsh snapshot-info --domain DOMAIN_NAME --snapshotname SNAPSHOT_NAME)
• virsh snapshot-list VM_MACHINE_NAME List snapshots for a domain
• virsh snapshot-parent Get the name of the parent of a snapshot
• virsh snapshot-revert (Destructive action) revert a domain to a snapshot
• virsh snapshot-delete Delete a domain snapshot

qcow2 internal snapshots are best avoided in favour of extenal snapshots.

Libvirt Snapshot releated changelog

• v5.1.0 (2019-03-04)
  • External snapshot metadata redefinition is fixed

Attempting to use VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE to reinstate the metadata describing an external snapshot created earlier for an offline domain no longer fails.

Related commands

• virsh list --with-snapshot

Activities

1. KVM: Create Live backups

See also

• virsh: Storage information, Connecting, Operations, Memory, Snapshots, Networking, CPU, release notes, virsh nodedev-list
• Virsh Snapshots: virsh snapshot-create-as, virsh snapshot-info, virsh snapshot-list, virsh blockjob, virsh snapshot-revert (Destructive action), virsh snapshot-delete

https://www.berrange.com/posts/2017/02/10/the-surprisingly-complicated-world-of-disk-image-sizes/