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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Kunpeng,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Maybe you can use SR-IOV and passthrough the VF which has similar performance to physical NIC<a name="_MailEndCompose"> to the VM. And then you can
use DPDK inside the VM with the VF.<o:p></o:p></a></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Sorry, I don’t have easy way to disable DPDK in stx1.0. The following command is used for stx2.0 which is still in progress:<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:15.75pt"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">system modify --vswitch_type none<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Best Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Xu, Chenjie<o:p></o:p></span></p>
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<p class="MsoNormal"><a name="_____replyseparator"></a><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">
</span><span style="font-size:11.0pt">张鲲鹏</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> [mailto:zhang.kunpeng@99cloud.net]
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<b>Sent:</b> Tuesday, July 16, 2019 5:40 PM<br>
<b>To:</b> Xu, Chenjie <chenjie.xu@intel.com><br>
<b>Cc:</b> starlingx-discuss@lists.starlingx.io<br>
<b>Subject:</b> Re: [Starlingx-discuss] [Starlingx-disscuss][ovs-dpdk] Reboot instance with physical pci-passthrough NIC causes OVS restart<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hi Chenjie,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Well, I will try the network topology as you said. But passthrough NIC with DPDK is our customer’s requirement.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">And do you have some easy ways to disable dpdk of openvswitch in stx1.0? <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">I had tried to execute “<span style="color:#FF9D00">system modify --vswitch_type none</span>” before “<span style="color:#FF9D00">system host-unlock controller-0</span>", but it doesn’t work well.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Thanks <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Kunpeng<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">On Jul 16, 2019, at 16:49, Xu, Chenjie <<a href="mailto:chenjie.xu@intel.com">chenjie.xu@intel.com</a>> wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Kunpeng,</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">When you reboot the VM with two physical pci-passthrough NICs, ovs-vswtichd is restarted and the interfaces and bridges are down. The virtual networks
used by the VMs are based on these interfaces and bridges. So other VMs will lost connections.</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Typically you should not pass through a PCI device which is bound to DPDK to the VM. Are the 2 network ports which is used to passthrough to the
VM bound to DPDK? If so, could you please try OVS-DPDK with the following network topology:</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:15.75pt"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">2 network port without DPDK > VM</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:15.75pt"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">2 network port with DPDK > Data Network</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal" style="text-indent:15.75pt"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">1 network port without DPDK > OAM</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Best Regards,</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D">Xu, Chenjie</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span class="apple-converted-space"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span></span><span style="font-size:11.0pt">张鲲鹏</span><span class="apple-converted-space"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span></span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">[<a href="mailto:zhang.kunpeng@99cloud.net">mailto:zhang.kunpeng@99cloud.net</a>]<span class="apple-converted-space"> </span><br>
<b>Sent:</b><span class="apple-converted-space"> </span>Tuesday, July 16, 2019 3:54 PM<br>
<b>To:</b><span class="apple-converted-space"> </span><a href="mailto:starlingx-discuss@lists.starlingx.io">starlingx-discuss@lists.starlingx.io</a><br>
<b>Subject:</b><span class="apple-converted-space"> </span>[Starlingx-discuss] [Starlingx-disscuss][ovs-dpdk] Reboot instance with physical pci-passthrough NIC causes OVS restart</span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Hi guys,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Recently I got a strange problem in StarlingX. When I reboot one VM with two physical pci-passthrough NICs, then all of VMs cannot be connected. I lost connections with all VMs and also the VMs lost each others. <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Below is the StarlingX environment.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">1. stx1.0 version, bootimage[1] <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">2. Simplex deployment<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">3. 5 Network ports. Only one don</span>’<span lang="EN-US">t support DPDK</span>，<span lang="EN-US">and it is used to OAM Network. In the rest, two are used to data network, and another two are used to passthrough to
a VM.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">4. The VM was attached two more virtual networks. I have tested the case of attaching one virtual net, it was no problem. <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">When I reboot the VM, something were happened. The interfaces and bridges were down, all the virtual dhcp services were down and ovs-vswitchd was restarted. But when I up the interfaces and dhcp services and reboot the
other VMs, I have got the connections with them again.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">It</span>’<span lang="EN-US">s ok when to reboot the VM without physical NIC. We think it may be caused by ovs-dpdk, so we stop to use ovs-dpdk and start the ovs manually, the problem was gone.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">I cannot understand the problem, anybody could give me some comments for it? Thanks a lot.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">[1] <a href="http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/outputs/iso/bootimage.iso"><span style="color:purple">http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/outputs/iso/bootimage.iso</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Kunpeng<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Menlo-Regular",serif">_______________________________________________<br>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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