[libvirt-users] Support for on-demand USB pass through

[Felicitus]

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On 12/12/2012 02:12 PM, Jiri Denemark wrote:

> With libvirt-1.0.0 or newer, you can use startupPolicy='optional'
> for that USB device, as documented at
> http://www.libvirt.org/formatdomain.html#elementsUSB
> 
> However, such device would not be automatically connected when it
> becomes available (which seems to be what you are after according
> to the guide you posted). You'd need to shut the VM down and start
> it up again.

That sounds almost as what I need - however, a VM shutdown and startup
again is not very handy.

Is there any chance to attach the device at runtime to the VM?

Our use case is this:

We've got a VM which has CUPS installed, and any USB printers attached
to the physical box need to be passed through to the VM. Printers are
turned off when not in use, and thus they need to be attached in an
automatic manner to the VM.

Regards
Felicitus
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