Is it possible to determine RBD device size using the 'virsh' command?

Issue

• I want to pull the RBD device size at nova/qemu layer. I've and tried this command:

# virsh domblklist instance-0000060c 
Target     Source
------------------------------------------------
vda        testnode-cinder-volume-1/53g912e6-ab12-4b1f-84c3-63dc0e7e2843_disk

# virsh domblkinfo instance-0000060c  vda
error: internal error: missing storage backend for network files using rbd protocol

• Is there a way to pull the size of an RBD device per VM at the qemu/libvirt layer?