[ovirt-users] Directly connect NIC or other cards to VM?

[David Smith]

Great, thanks for the update. That'll certainly keep me moving forward in
that direction.

I think at this time I can wait a while for it to be official.

Thanks,
David

On Mon, Feb 16, 2015 at 3:36 AM, Martin Polednik <mpolednik at redhat.com>
wrote:

>
>
> ----- Original Message -----
> > From: "Lior Vernia" <lvernia at redhat.com>
> > To: "David Smith" <dsmith at mypchelp.com>
> > Cc: "users" <users at ovirt.org>, "Martin Polednik" <mpoledni at redhat.com>
> > Sent: Monday, February 16, 2015 9:15:41 AM
> > Subject: Re: [ovirt-users] Directly connect NIC or other cards to VM?
> >
> > Hi David,
> >
> > On 13/02/15 01:28, David Smith wrote:
> > > Is there a way to directly connect a specific device (ie, NIC) to a
> > > particular VM?
> > >
> > > I've figured out how to map a specific network interface to a VM, thats
> > > one step, but in the end I may need direct access to the PCI device
> itself.
> >
> > I think this 3.6 feature might do exactly what you want:
> > http://www.ovirt.org/Features/hostdev_passthrough
> >
> > It's gonna be a while before 3.6 is out, but once the feature is merged
> > it'll be available if you install the nightly snapshot. CCing Martin
> > Polednik, the feature owner.
>
> Hello,
>
> just on the status of the feature (as it's exactly what you require -
> direct
> pci device attachment) - the host side is hopefully ~week away from being
> ready, the UI side will take longer though - if you wanted, you could
> probably
> run nightly and spawn the VM yourself and treat is as external VM. CCing
> Martin
> Betak, who is the one to blame for the UI :)
>
> You also need RHEL 7 (ideal support will be in 7.1) and I suggest reading
> the chapter on IOMMU groups, as you might need to block (detach from host)
> other devices than the nic in order to get it passed through.
>
> > >
> > > Second to that, for network interfaces mapped to a particular VM, is
> > > there a way for the VM to be able to properly detect physical link
> state
> > > of that interface? Right now that's a 'configurable option' inside
> > > network interface settings on the VM in the manager (ie, plugged, not
> > > plugged, and link state up /down)
> >
> > If I'm not mistaken, once you have direct access to the PCI device
> > you'll be able to query for its actual state using e.g. ethtool.
> >
> > >
> > > Thanks,
> > > David
> > >
> > >
> > > _______________________________________________
> > > Users mailing list
> > > Users at ovirt.org
> > > http://lists.ovirt.org/mailman/listinfo/users
> > >
> >
>
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