Right now, on a virsh blockcopy, I know you can do something like this: # Connect DEST target iscsiadm -m node -p ${DESTINATION}:3260 -T ${VOLNAME} -o new iscsiadm -m node -p ${DESTINATION}:3260 -T ${VOLNAME} --login # Copy to connected iSCSI target virsh blockcopy ${DOMAIN} vda /dev/sdc --raw --bandwidth 300 However I have libiscsi compiled into my QEMU. So I can do this with the monitor directly (and avoid the need to call out to external iscsiadm): virsh qemu-monitor-command ${DOMAIN} '{"execute":"drive-mirror", "arguments": { "device": "drive-virtio-disk0", "target": "iscsi://${TARGET_IP}:3260/${DOMAIN}/1", "mode": "existing", "sync": "full", "on-source-error": "stop", "on-target-error": "stop" } }' Is there a way to use the libiscsi compiled into my QEMU with virsh blockcopy command? I haven't been able to find any examples of using blockcopy with iSCSI compiled into QEMU.