[Bug 258771] Re: Using -usbdevice host: slows the guest OS down to a crawl

Wout wout.van.heeswijk at gmail.com
Tue Mar 30 09:49:22 BST 2010


I tried connecting several different devices to my Microsoft Windows 7 Virtual Machine. non of them working. Among them:
- USB Mass storage device
   *When inserting the device in my laptop it doesn't show up in nautilus on the host when added to a vm. (Something is going right). It doesn't show up in the guest os' Windows Explorer. (somethings not going right)
- HTC winmo phone
   * Nothing happens at all.

I've enabled USB access in apparmor.:
/etc/apparmor.d/abstractions/libvirt-qemu
  # WARNING: uncommenting these gives the guest direct access to host hardware.
  # This is required for USB pass through but is a security risk. You have been
  # warned.
  /sys/bus/usb/devices/ r,
  /sys/devices/*/*/usb[0-9]*/** r,
  /dev/bus/usb/*/[0-9]* rw,

qemu-kvm - QEMU PC emulator version 0.12.3
"uname -a": Linux laptop-24 2.6.32-17-generic #26-Ubuntu SMP Sat Mar 20 02:23:45 UTC 2010 x86_64 GNU/Linux
libvirtd --version: libvirtd (libvirt) 0.7.5
virt-manager: version 0.8.2

I am available for testing new packages

-- 
Using -usbdevice host: slows the guest OS down to a crawl
https://bugs.launchpad.net/bugs/258771
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