<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/> <source file='file.qcow2'/> <target dev='sda' bus='scsi'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/> <source file='file.qcow2'/> <target dev='sda' bus='scsi'/>
</disk>