From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <ian.campbell@citrix.com>
Subject: Re: [PATCH V7 6/7] xl: add usb-assignable-list command
Date: Wed, 7 Oct 2015 12:39:48 +0100
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To: Juergen Gross <jgross@suse.com>, George Dunlap <george.dunlap@citrix.com>, George Dunlap <George.Dunlap@eu.citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>, Jim Fehlig <jfehlig@suse.com>, Wei Liu <wei.liu2@citrix.com>, Chunyan Liu <cyliu@suse.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On Wed, 2015-10-07 at 13:25 +0200, Juergen Gross wrote:
> > The "usb-assignable-list" that Chunyan has submitted will give you a
> > list of all dom0 USB devices that have not yet been assigned to a guest.
> >   It should be basically equivalent to "lsusb", except that it filters
> > out devices which have already been assigned to VMs.

Right, that does sound like useful enough functionality to justify not just
using lsusb.

> > In the e-mail you respond to, I was suggesting that
> > 
> > # xl usb-list --all
> > 
> > would show you usb devices attached to every VM, and also USB devices
> > attached to no VM, and that

And would "xl usb-list" list all domain attached to every VM but not the
unattached ones?

> > # xl usb-list --host
> > 
> > would show you only host usb devices not attached to any VM.
> > 
> > I think it's the second bit if functionality which Juergen is keen be
> > available in some form or other.
> 
> Exactly.

I'm happy with this proposal too.

Is the distinction between --host and --all important to you? Assuming
unassigned devices are clearly indicated in the --all output (as they
should be).

Ian.