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xen-users
Re: [Xen-users] Exporting a PCI Device
Todd Deshane wrote:
>
>
> On Feb 18, 2008 6:02 AM, Jan Kalcic <jandot@xxxxxxxxxxxxxx
> <mailto:jandot@xxxxxxxxxxxxxx>> wrote:
>
> Todd Deshane wrote:
> >
> > Hi,
> >
> > On Feb 17, 2008 6:34 PM, Jan Kalcic <jandot@xxxxxxxxxxxxxx
> <mailto:jandot@xxxxxxxxxxxxxx>
> > <mailto:jandot@xxxxxxxxxxxxxx <mailto:jandot@xxxxxxxxxxxxxx>>>
> wrote:
> >
> > Hi All,
> >
> > just a quick question I could not figure out. Is there a way to
> > export a
> > PCI device to multiple VMs (para) keeping it available to
> dom0? Xen
> > version is 3.0.4.
> >
> >
> > As far as I know you can't. That is what virtual devices are
> used for
> > right?
> >
> > In what scenario would you want to grant direct access to a PCI
> device
> > in VMs and also in dom0?
> >
> Hi Todd,
>
> the PCI device which I would need to "share" is the fibre channel card
> connected to two different storage, on of this is the VMs repository
> which has to be visible to dom0 and the other one is the data storage
> for VMs which, obviously, has to be visibile to VMs. So the solution
> would be using two different fibre channel cards, right?
>
>
>
> Adding more hardware is usually a nice solution if you can, since you
> it will be easier to configure and you should get better performance.
> You could then dedicate one card to dom0 and one card to a driver domain.
>
> As far as I know there isn't a way to do what you want yet with
> configuration tricks in Xen. And I don't know for sure if Xen support
> would be written in the future. I am not an expert on this. Can others
> comment?
>
Thanks Todd,
this is exactly what I was thinking. More hardware and better
performance. I just wanted to know if there is, as you said, a tricky
solution for this which would avoid to purchase new hardware. Of course,
any other suggestion is welcome.
Thanks,
Jan
> Thanks,
> Todd
>
>
>
> Thanks,
> Jan
> > Todd
> >
> >
> >
> >
> > Thanks,
> > Jan
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> <mailto:Xen-users@xxxxxxxxxxxxxxxxxxx>
> <mailto:Xen-users@xxxxxxxxxxxxxxxxxxx
> <mailto:Xen-users@xxxxxxxxxxxxxxxxxxx>>
> > http://lists.xensource.com/xen-users
> >
> >
>
>
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