[libvirt] regression ?

Hi, I was testing an under-development patch on upstream libvirt using domxml-to-native and domxml-from-native and realised that the domxml-from-native fails for a successfully generated qemu cmd line using domxml-to-native. To isolate the issue, I tried generating the qemu cmd line for tests/qemuxml2argvdata/qemuxml2argv-disk-virtio.xml like this: $virsh domxml-to-native qemu-argv tests/qemuxml2argvdata/qemuxml2argv-disk-virtio.xml > qemu-args Now, when I try to generate the XML back for the same CLI, it fails: $virsh domxml-from-native qemu-argv qem-args error: internal error missing index/unit/bus parameter in drive 'file=/dev/HostVG/QEMUGuest1,if=none,id=drive-ide0-0-0,format=raw' Does anyone have any idea, what could be causing this ? regards, Harsh