外部スナップショットは、08 qcow2 バックアップ 外部へ取得する場合(online external)

# virsh snapshot-create-as --domain test01 --name 20230128

# virsh snapshot-list test01 
 Name       Creation Time               State
-------------------------------------------------
 20230128   2023-01-28 08:32:08 +0900   running

# virsh snapshot-info test01 --snapshotname 20230128 
Name:           20230128
Domain:         test01
Current:        yes
State:          running
Location:       internal
Parent:         -
Children:       0
Descendants:    0
Metadata:       yes

# virsh snapshot-revert test01 20230128