[libvirt-users] Snapshot of single block device

[jarek]

Hello!

I have a guest with one qcow2 disk image (vda) and one physical
partition (sda) from host. When I'm trying to get snapshot with:

virsh snapshot-create-as .....

It fails with message: error: unsupported configuration: source for
disk 'sda' is not a regular file; refusing to generate external
snapshot name

I understand, that it is not possible to make a snapshot of physical
device, but it is enough for me to take snapshot of vda. How to force
virsh to ignore sda ?

best regards
Jarek