<domainsnapshot>
  <name>my snap name</name>
  <description>!@#$%^</description>
  <creationTime>1386166249</creationTime>
  <disks>
    <disk name='hdd' snapshot='external' type='file'>
      <driver type='qcow2'>
        <metadata_cache>
          <max_size unit='bytes'>1234</max_size>
        </metadata_cache>
      </driver>
      <source file='/path/to/new'/>
    </disk>
  </disks>
  <domain>
    <uuid>9d37b878-a7cc-9f9a-b78f-49b3abad25a8</uuid>
  </domain>
</domainsnapshot>