Re: [ovirt-users] VM support for Infiniband
On 9/30/2016 9:28 AM, Michal Skrivanek wrote:
> On 30 Sep 2016, at 03:56, Kevin Hung <khung(a)nullaxiom.com>
wrote:
>
> Hello,
>
> I have been trying (unsuccessfully) to add my Infiniband HCAs on my VM hosts to oVirt
4.0.4. I am not using IBoIP, just plain Infiniband. I would like to be able to pass
through the card (or better yet the VF from SR-IOV) to the guest VM.
SR-IOV should work (or general PCI passthrough), it’s then transparent to oVirt. Did you
not succeed with setting up SR-IOV or generic passthrough of the HCA?
oVirt sees the
HCA as SR-IOV capable and it sees the VFs, so I believe I
have set up SR-IOV correctly. I was able to do a generic passthrough of
the HCA, but I was not able to pass through the VFs to more than one VM
probably because they are all in the same IOMMU group. I first tried
following the oVirt 3.6 Deep Dive video on SR-IOV [1] but was stuck
because of the bridging problem.
> From what I can figure out, oVirt is trying to bridge the interface but I don't
think that will work as shown here [1]. Does oVirt currently have support for passing
through Infiniband to VMs? If not, are there any plans to support it?
Well, at least for generic passthrough the PCI device would be detached from the host so
should not be recognized/touched by oVirt networking code at all.
Thanks,
michal
> [1] http://lists.ovirt.org/pipermail/users/2016-July/040898.html
>
> Thanks,
> Kevin Hung
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[1] https://www.youtube.com/watch?v=A-MROZ8D06Y