On Sun, May 03, 2009 at 09:21:20PM +0200, Felix Schwarz wrote:
Hi,
I want to pass through a USB device to a KVM guest (Windows 2000). My host OS is a standard Fedora 10, 64 bit. However, the device is only passed to the guest when I use qemu monitor directly and only after several tries... The device has no Linux drivers ('AVM GmbH ISDN-Controller FRITZ!Card v2.0') so I think I don't have to tell the kernel not to use it.
I have KVM 74 and tried initially with libvirt 0.5.1 so from what I read this should be ok.
At first I added this to my domain xml via virsh: <hostdev mode='subsystem' type='usb'> <source> <vendor id='0x....'/> <product id='0x....'/> </source> </hostdev>
However, the device did not turn up in the guest.
That should be what you need from a libvirt POV, so I'm afraid you're probably hitting problems at the QEMU level instead.
So how can I use USB pass through? Could this be Windows-related? Judging from all the other threads (like [1]) it should be really easy to use.
I think best bet is to try updating to a newer KVM build - you ought to be able to pull in the 'qemu-system-x86' RPM from Fedora 11 into a F10 host without too many deps. That would let you see if newer KVM userspace fixed it (no need to update kernel - USB passthrough is purely a userspace issue) Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|