Pa-vm-kvm-9.0.1.qcow2
For a file named with a semantic version like 9.0.1, maintain a short release note listing:
Example changelog entry:
virsh snapshot-create-as Pa-VM-901 clean-state \
--disk-only --atomic --diskspec vda,file=/backup/Pa-vm-kvm-9.0.1-snapshot.qcow2
If Pa-vm-kvm-9.0.1 is a storage VM, consider converting to raw format for lower overhead: Pa-vm-kvm-9.0.1.qcow2
qemu-img convert -f qcow2 -O raw Pa-vm-kvm-9.0.1.qcow2 Pa-vm-kvm-9.0.1.raw