<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw' **cache='directsync' io='native'**/>
<source dev='/dev/vg/vsv1004-0ber-us6iovmjtprjximl'/>
<target dev='hda' bus='**ide**'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>