salt/templates/virt/libvirt_volume.jinja
<volume>
<name>{{ name }}/{{ filename }}</name>
<key>{{ name }}/{{ volname }}</key>
<source>
</source>
<capacity unit='KiB'>{{ size }}</capacity>
<allocation unit='KiB'>0</allocation>
<target>
<path>{{ pool }}{{ name }}/{{ filename }}</path>
<format type='{{ disktype }}'/>
<permissions>
<mode>00</mode>
<owner>0</owner>
<group>0</group>
</permissions>
</target>
</volume>