6:28 p.m.
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.
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)
Thanks,
David
9:09 a.m.
Still easy enough to do with vdsm-hooks
--
Dan
On Thu, Feb 12, 2015 at 6:28 PM, David Smith <dsmith(a)mypchelp.com> 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.
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)
Thanks,
David
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
10:25 a.m.
--Apple-Mail=_FFE80847-886D-458B-B13C-9D1FB481489B
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset=us-ascii
Hi David,
maybe if you gave us a little bit more of the big picture we can find =
some way. What is the the reason for the actions you take? What are you =
trying to achieve?
Martin
On 13 Feb 2015, at 15:09, Dan Yasny <dyasny(a)gmail.com> wrote:
=20
Still easy enough to do with vdsm-hooks
=20
--
Dan
=20
On Thu, Feb 12, 2015 at 6:28 PM, David Smith <dsmith(a)mypchelp.com> =
wrote:
Is there a way to directly connect a specific device (ie, NIC) to a =
particular VM?
=20
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.
=20
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)
=20
Thanks,
David
=20
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
=20
=20
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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11:08 a.m.
I do physical layer testing of ethernet switches. I want to virtualize the
test servers for scalability, reliability, and a VM solution allows easy
change of system configuration.
The bottom line is that testing often requires opening the network port in
promiscuous mode to sniff traffic, many tests need to be able to use
ethtool to view network properties (speed, duplex, link state, etc) and to
set properties (auto-neg, forced speed, duplex, link state, etc).
We use TOE cards which also allow offloading data from the CPU to the card
allowing higher throughput, some tests we use this to send ~1Gbps traffic
and monitor the data rate.
So there are multiple scenarios, the main one being the ability to see and
set physical layer properties, the other being able to offload traffic for
maximum throughput. The latter can possibly be accomplished through OS
layer drivers on the hypervisor but the former requires better driver
access than what i currently see in the VM.
On Fri, Feb 13, 2015 at 7:25 AM, Martin Pavlík <mpavlik(a)redhat.com> wrote:
Hi David,
maybe if you gave us a little bit more of the big picture we can find some
way. What is the the reason for the actions you take? What are you trying
to achieve?
Martin
> On 13 Feb 2015, at 15:09, Dan Yasny <dyasny(a)gmail.com> wrote:
>
> Still easy enough to do with vdsm-hooks
>
> --
> Dan
>
> On Thu, Feb 12, 2015 at 6:28 PM, David Smith <dsmith(a)mypchelp.com>
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.
>
> 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)
>
> Thanks,
> David
>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
3:15 a.m.
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.
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(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
6:36 a.m.
----- Original Message -----
From: "Lior Vernia" <lvernia(a)redhat.com>
To: "David Smith" <dsmith(a)mypchelp.com>
Cc: "users" <users(a)ovirt.org>, "Martin Polednik"
<mpoledni(a)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(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
2:04 p.m.
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(a)redhat.com>
wrote:
----- Original Message -----
> From: "Lior Vernia" <lvernia(a)redhat.com>
> To: "David Smith" <dsmith(a)mypchelp.com>
> Cc: "users" <users(a)ovirt.org>, "Martin Polednik"
<mpoledni(a)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(a)ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
> >
>
9:03 a.m.
----- Original Message -----
From: "David Smith" <dsmith(a)mypchelp.com>
To: "Martin Polednik" <mpolednik(a)redhat.com>
Cc: "Lior Vernia" <lvernia(a)redhat.com>, "users"
<users(a)ovirt.org>, "Martin Betak" <mbetak(a)redhat.com>
Sent: Wednesday, May 6, 2015 8:04:22 PM
Subject: Re: [ovirt-users] Directly connect NIC or other cards to VM?
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(a)redhat.com>
wrote:
>
>
> ----- Original Message -----
> > From: "Lior Vernia" <lvernia(a)redhat.com>
> > To: "David Smith" <dsmith(a)mypchelp.com>
> > Cc: "users" <users(a)ovirt.org>, "Martin Polednik"
<mpoledni(a)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 :)
Hi all,
the frontend part has just landed in master [1]. The UI is not beatufil (yet)
but it should provide you with the ability to directly attach specific devices
to VM. It should be polished well enough in time for 3.6.
Best regards,
Martin B.
[1] https://gerrit.ovirt.org/#/c/37620/
>
> 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(a)ovirt.org
> > > http://lists.ovirt.org/mailman/listinfo/users
> > >
> >
>
3516
days inactive
3604
days old
7 comments
6 participants
participants (6)
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Dan Yasny -
David Smith -
Lior Vernia -
Martin Betak -
Martin Pavlík -
Martin Polednik