[libvirt-users] Error attaching tape drive device to KVM guest

Hello, i'm trying to configure a host SCSI device (tape drive) so that it is available in a KVM guest VM, but am receiving an error when attempting to attach the device. My guest xml has the following scsi controller defined: <controller type='scsi' index='0' model='virtio-scsi'> <alias name='scsi0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> I created tapedrive.xml with following contents: <disk type='block' device='lun' sgio='unfiltered'> <driver name='qemu' type='raw' cache='none'/> <source dev='/dev/st0'/> <target dev='st0' bus='scsi'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> I then attempt to attach using following command, and receive this error: # virsh attach-device instance-0000002d tapedrive.xml --config error: Failed to attach device from tapedrive.xml error: internal error: Invalid harddisk device name: st0 Does anyone know cause of the error? In <address> section of tape drive definition I am using type='drive', I tried type='tape' also but same error. is there a different property value I should use here, or general advice for attaching tape drive to KVM guest? Thanks, Jake