Re: [libvirt] Problem with USB pass-through

On 04/19/2012 10:44 AM, Carlos Rodrigues wrote: > Hello, > > I have a problem with USB pass-through. > > I can see the USB device in host machine, i see it in libvirt but when > attach to VM i get an error: > > # lsusb > ... > Bus 002 Device 014: ID 0529:0001 Aladdin Knowledge Systems HASP v0.06 > ... > > # virsh nodedev-list > ... > usb_device_529_1_noserial > usb_device_529_1_noserial_if0 > usb_device_529_1_noserial_usbraw > ... > > # virsh dumpxml vm > ... > > <hostdev mode='subsystem' type='usb' managed='no'> > <source> > <vendor id='0x0529'/> > <product id='0x0001'/> > </source> > </hostdev> > ... > > # cat /var/log/libvirt/qemu/vm.log > ... > LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/ > QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc -m 3800 -smp 4 -name vm > -uuid 056dad8b-22a4-4472-cb5e-8cf60215a41b -monitor > unix:/var/lib/libvirt/qemu/v,.monitor,server,nowait -boot c -drive > file=/dev/vg_sata2/vol_vm,if=virtio,boot=on,format=raw -net > nic,macaddr=00:00:00:0b:5b:ec,vlan=0,model=virtio,name=net0 -net > tap,fd=21,vlan=0,name=hostnet0 -serial none -parallel none -usb > -usbdevice tablet -vnc 0.0.0.0:4 -k pt -vga cirrus -usbdevice > host:002.014 -balloon virtio > husb: open device 2.12 > /proc/bus/usb/002/012: No such file or directory > Warning: could not add USB device host:002.014 > ... > > I'm using libvirt 0.8.3 with kvm 88. > > Anyone have see this problem? That sounds like this problem: commit 823a684f8d0495bd5e7b413e1a81fd5a600abef7 Author: Daniel P. Berrange <berrange(a)redhat.com&gt; Date: Thu Feb 11 14:39:13 2010 +0000 Fix USB device path formatting mixup * src/util/hostusb.c: The device path for a USB device wants the bus/device IDs in decimal not octal but the fix was included in libvirt 0.7.7. What is the output of "find /proc/bus/usb"? I'm guessing that there *is* a 002/014, but no 002/012. Since kvm-88's error message lists both, my next guess is that kvm-88 really *is* expecting the USB device to be given as octal. Are you able to upgrade to newer kvm or libvirt? (note that there may be a newer kvm available under the package name "qemu-kvm" or even "qemu", depending on your distro). -- libvir-list mailing list libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list