Comment 18 for bug 996840

Actually, I just instrumented both nova and virsh to dump the respective XML they build. These are the results:

Nova:
<disk type='block'>
  <driver name='qemu' type='raw' cache='none'/>
  <source dev='/dev/disk/by-path/ip-172.29.74.59:3260-iscsi-iqn.2010-10.org.openstack:volume-00000006-lun-1'/>
  <target dev='vdc' bus='virtio'/>
</disk>

Virsh:
<disk type='block'>
  <source dev='/dev/disk/by-path/ip-172.29.74.59:3260-iscsi-iqn.2010-10.org.openstack:volume-00000006-lun-1'/>
  <target dev='vdd'/>
</disk>