[libvirt-users] How to device port on the controller

Hi, I am adding a disk to my KVM virtual server, but for some reason it refuses to honor the <address> I have tried the following 3: <disk type='block' device='disk'> <driver name='phy' type='raw'/> <source dev='/dev/nbd2'/> <target dev='vdb' bus='virtio'/> <serial>my-fake-serial</serial> <address type='drive' controller='0' bus='1' target='3' unit='2'/> </disk> <disk type='block' device='disk'> <driver name='phy' type='raw'/> <source dev='/dev/nbd2'/> <target dev='vdb' bus='virtio'/> <serial>my-fake-serial</serial> <address type='pci' bus='0x00' slot='0x08' function='0x0'/> </disk> <disk type='block' device='disk'> <driver name='phy' type='raw'/> <source dev='/dev/nbd2'/> <target dev='vdb' bus='virtio'/> <serial>my-fake-serial</serial> <address type='virtio-serial' controller='0' bus='0' port='8'/> </disk> I would assume the last one is the one to use, as I am using a "virtio" bus. However, the <address> attribute is simply ignored and the disk is always attached as this: pci-0000:00:05.0 Further, how do I read the "my-fake-serial" from within the virtual machine? I have tried using this: udevadm info -a -p $(udevadm info -q path -n /dev/vdb) But it does not show the serial string there anywhere. Regards, Daniele