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<div>Hi Folks,</div>
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<div>In today's meeting, we discussed a scheduler issue for SRIOV. The basic requirement is for coexistence of the following compute nodes in a cloud:</div>
<div> -- SRIOV only compute nodes</div>
<div> -- non-SRIOV only compute nodes</div>
<div> -- Compute nodes that can support both SRIOV and non-SRIOV ports. Lack of a proper name, let's call them compute nodes with hybrid NICs support, or simply hybrid compute nodes.</div>
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<div>I'm not sure if it's practical in having hybrid compute nodes in a real cloud. But it may be useful in the lab to bench mark the performance differences between SRIOV, non-SRIOV, and coexistence of both.</div>
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<div>In a cloud that supports SRIOV in some of the compute nodes, a request such as:</div>
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<div> nova boot —flavor m1.large —image <image-uuid> --nic net-id=<net-uuid> vm</div>
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<div>doesn't require a SRIOV port. However, it's possible for the nova scheduler to place it on a compute node that supports sriov port only. Since neutron plugin runs on the controller, port-create would succeed unless neutron knows the host doesn't support
non-sriov port. But connectivity on the node would not be established since no agent is running on that host to establish such connectivity. </div>
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<div>Irena brought up the idea of using host aggregate. This requires creation of a non-SRIOV host aggregate, and use that in the above 'nova boot' command. It should work.</div>
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<div>The patch I had introduced a new constraint in the existing PCI passthrough filter. </div>
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<div>The consensus seems to be having a better solution in a later release. And for now, people can either use host aggregate or resort to their own means.</div>
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<div>Let's keep the discussion going on this. </div>
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<div>Thanks,</div>
<div>Robert</div>
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<div>On 1/24/14 4:50 PM, "Robert Li (baoli)" <<a href="mailto:baoli@cisco.com">baoli@cisco.com</a>> wrote:</div>
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<div>Hi Folks,</div>
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<div>Based on Thursday's discussion and a chat with Irena, I took the liberty to add a summary and discussion points for SRIOV on Monday and onwards. Check it out <a href="https://wiki.openstack.org/wiki/Meetings/Passthrough">https://wiki.openstack.org/wiki/Meetings/Passthrough</a>.
Please feel free to update it. Let's try to finalize it next week. The goal is to determine the BPs that need to get approved, and to start coding. </div>
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<div>thanks,</div>
<div>Robert</div>
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<div>On 1/22/14 8:03 AM, "Robert Li (baoli)" <<a href="mailto:baoli@cisco.com">baoli@cisco.com</a>> wrote:</div>
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<div>Sounds great! Let's do it on Thursday.</div>
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<div>--Robert</div>
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<div>On 1/22/14 12:46 AM, "Irena Berezovsky" <<a href="mailto:irenab@mellanox.com">irenab@mellanox.com</a>> wrote:</div>
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<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Hi Robert, all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">I would suggest not to delay the SR-IOV discussion to the next week.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Let’s try to cover the SRIOV side and especially the nova-neutron interaction points and interfaces this Thursday.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Once we have the interaction points well defined, we can run parallel patches to cover the full story.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Thanks a lot,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Irena
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<p class="MsoNormal"><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; ">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; "> Robert Li (baoli) [<a href="mailto:baoli@cisco.com">mailto:baoli@cisco.com</a>]
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<b>Sent:</b> Wednesday, January 22, 2014 12:02 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> [openstack-dev] [nova][neutron] PCI passthrough SRIOV<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; ">Hi Folks,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; ">As the debate about PCI flavor versus host aggregate goes on, I'd like to move forward with the SRIOV side of things in the same time. I know that tomorrow's
IRC will be focusing on the BP review, and it may well continue into Thursday. Therefore, let's start discussing SRIOV side of things on Monday. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; ">Basically, we need to work out the details on:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "> -- regardless it's PCI flavor or host aggregate or something else, how to use it to specify a SRIOV port. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "> -- new parameters for —nic<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "> -- new parameters for neutron net-create/neutron port-create<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "> -- interface between nova and neutron<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "> -- nova side of work<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "> -- neutron side of work<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; ">We should start coding ASAP.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; ">Thanks,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; ">Robert<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size: 10.5pt; font-family: Calibri, sans-serif; color: black; "><o:p> </o:p></span></p>
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