From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: George Dunlap <dunlapg@umich.edu>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Erwan PILLET <erwan.pillet@telecom-bretagne.eu>
Subject: Re: [Bug] PVUSB, Ubuntu 12.04, Xen 4.1.2
Date: Wed, 29 May 2013 14:00:41 -0400 [thread overview]
Message-ID: <20130529180041.GA10845@phenom.dumpdata.com> (raw)
In-Reply-To: <CAFLBxZbJWBnptQ6WkBAEzbTi5FLZhBmY+bx3-FBcNqCoFMoDKw@mail.gmail.com>
On Wed, May 29, 2013 at 05:14:08PM +0100, George Dunlap wrote:
> On Wed, May 29, 2013 at 4:08 PM, Erwan PILLET
> <erwan.pillet@telecom-bretagne.eu> wrote:
> > On 29 May 2013 15:25, George Dunlap <George.Dunlap@eu.citrix.com> wrote:
> >>
> >> On Wed, May 29, 2013 at 2:11 PM, Erwan PILLET
> >> <erwan.pillet@telecom-bretagne.eu> wrote:
> >> > Hi everyone,
> >> >
> >> > I installed xen from packages on Ubuntu 12.04, getting the version 4.1.2
> >> > .
> >> > I wanted to use pvusb which I understand was functional on this version
> >> > to
> >> > pass an USB hard drive to my DomU, but I only manage to get this error
> >> > trying to attach the device to a domain.
> >> >
> >> > It may also be worth mentionning that "xm usb-hc-destroy mydomu 0"
> >> > doesn't
> >> > have any effect, so it doesn't give back any error (I get one if I try
> >> > on an
> >> > unregistered devId) but don't remove the host controller.
> >> >
> >> > So should pvusb be fonctionnal on this version of xen/xm ? If yes, any
> >> > help
> >> > would be highly appreciated.
> >>
> >> PVUSB requires support both from the toolstack and from the dom0
> >> kernel. I believe PVUSB is only available in "classic Xen" kernels
> >> such as those supported by SuSE; I'm pretty sure that Ubuntu does not
> >> have one.
> >>
> >> To see if usbback is present, you can do the following:
> >>
> >> ls /sys/bus/usb/drivers/usbback
> >>
> >> If it gives you an error, then the problem is that your Ubuntu dom0
> >> kernel doesn't have PVUSB support.
> >>
> >> -George
> >
> >
> >
> > First, thanks for your help !
> > Indeed, there is no such file on my hypervisor, so I guess this kernel
> > doesn't support PVUSB.
> > Do you know if there is a way to patch the kernel to include this feature ?
>
> I think there are some trees with PVUSB, but I don't think it's very
> reliable. Konrad will know more.
There is devel/xen-usb.v1.1 in git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git
but it is so old that I fear it has many bugs in it.
>
> -George
prev parent reply other threads:[~2013-05-29 18:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-29 13:11 [Bug] PVUSB, Ubuntu 12.04, Xen 4.1.2 Erwan PILLET
2013-05-29 13:25 ` George Dunlap
2013-05-29 15:08 ` Erwan PILLET
2013-05-29 16:14 ` George Dunlap
2013-05-29 18:00 ` Konrad Rzeszutek Wilk [this message]
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