[libvirt-users] Reconnection problem with a USB device

[Dax Kelson]

On Tue, 2012-06-12 at 11:02 -0700, Dale Amon wrote:
> I tunneled the USB device to it:
> 
>     <hostdev mode='subsystem' type='usb' managed='no'>
>       <source>
>         <vendor id='0x055f'/>
>         <product id='0x040b'/>
>         <address bus='3' device='8'/>
>       </source>
>       <alias name='hostdev0'/>
>     </hostdev>
> 
> That works fine... until I have to go into the office. Once I
> disconnected the USB go away for 10 hours and come back, it
> fails to re-engage. The USB seems to get grabbed up by the
> laptop itself instead of the VM. The only way to get it to
> work again is to halt the VM and do a cold boot of it. This is
> annoying to say the least because I lose 'state' when I boot,
> ie the set of windows and files open that remind me of where
> I left off on a project before going to work.
> 
> Any suggestions how to get around this annoying issue?

I could be wrong. But I believe you want managed='yes' so that libvirtd
detaches the device from the host automatically.

Dax Kelson