<domainsnapshot>
<name>my snap name</name>
<description>!@#$%^</description>
<disks>
<disk name='hde' snapshot='external' type='file'>
<source file='/path/to/new2'>
<seclabel model='dac' relabel='no'/>
</source>
</disk>
</disks>
</domainsnapshot>