[libvirt] [PATCH/RFC]: file backed usb massstorage

[Guido Günther]

On Fri, Jul 25, 2008 at 04:17:30PM -0400, Guido Günther wrote:
> attached is some basic support for host device passthrough. It enables
> you to passthrough usb devices in qemu/kvm via:
On top of the hostdev passthrough (but it's actually totally
independent) I added usb massstorage backed by a file. Very handy for
installer testing where the preseed data is on the USB stick and the
CD/DVD is the installation medium.
At the moment I'm using a dummy target "usbdisk" so we don't have to
check for target == NULL in that many places. Once qemu handles it we
can fill in bus and device address for unplugging. To add a file as usb
massstorage to the guest you can use:

<disk type='file' device='disk'>
     <source file='/foo/bar/usbmass.img'/>
     <target bus='usb'/>
</disk>

Does this make sense?
 -- Guido
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