<disk type='dir' device='disk'>
  <driver name='qemu' type='fat' cache='directsync'/>
  <source dir='/var/somefiles'>
    <privateData>
      <nodenames>
        <nodename type='storage' name='node-s'/>
        <nodename type='format' name='node-f'/>
      </nodenames>
    </privateData>
  </source>
  <target dev='vda'/>
  <readonly/>
</disk>
