<disk device='disk'>
  <driver name='qemu' type='raw'/>
  <source file='/path/luks.img'>
    <encryption format='luks'>
      <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccc2f80d6f'/>
    </encryption>
    <privateData>
      <nodenames>
        <nodename type='storage' name='test2'/>
        <nodename type='format' name='test1'/>
      </nodenames>
    </privateData>
  </source>
  <target dev='vda'/>
</disk>
