KVM / Windows XP guest / USB devices

[Graham Watkins]

scar wrote:
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> scar @ 02/04/2010 12:17 PM:
>   
>> [snip]
>> i have an external USB hard disk plugged into the host system, and
>> it is formatted fat32.  i want to read/write to this disk in the winxp
>> guest.
>>     
>
> figured this part out.  in virt-manager i opened the VM, went to the
> hardware tab, and added a storage device. i chose block device and
> pointed it to the entire disk, not the partition (e.g. /dev/sdb and not
> /dev/sdb1).  i chose type 'ide device' and then booted up the VM.
> worked great.
>
>
>   
>> additionally, i have a scanner which isn't yet supported by sane (which
>> was the main reason for installing a winxp guest OS) that i want to
>> install the drivers for and use inside the winxp guest.
>>     
>
> still trying to figure this part out.
>
> i tried using 'lsusb' to get the ID of the device (xxxx:yyyy), and then
> i manually added a USB device to the VM's XML file (in
> /etc/libvirt/qemu) following the info at [1].  i took xxxx to be the
> vendor id and yyyy to be the product id, and prepended "0x".  then i
> redefined the VM ('sudo virsh define /etc/libvirt/qemu/myvm.xml') and
> restarted it.  but that didn't work... i can't even see the device
> showing up in device manager...
>
>
> 1. http://libvirt.org/formatdomain.html#elementsUSB
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>   
This may or not be relevant.  I was messing about with Virtual Box about 
a year ago and couldn't get my usb devices to show up in the XP client.  
Wouldn't you know it, it turned out to be a Windows problem which was 
fixed by installing  an XP Service Pack (Pack 2, I think.) Hope this helps.

Cheers,

G.