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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><a name="_____replyseparator"></a><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Miguel Angel Ajo Pelayo [mailto:majopela@redhat.com]
<br>
<b>Sent:</b> Thursday, August 10, 2017 8:55 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions) <openstack-dev@lists.openstack.org><br>
<b>Subject:</b> Re: [openstack-dev] [neutron][infra] Functional job failure rate at 100%<o:p></o:p></span></p>
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<p class="MsoNormal">Good (amazing) job folks. :)<o:p></o:p></p>
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<p class="MsoNormal">El 10 ago. 2017 9:43, "Thierry Carrez" <<a href="mailto:thierry@openstack.org">thierry@openstack.org</a>> escribió:<o:p></o:p></p>
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<p class="MsoNormal">Oh, that's good for us. Should still be fixed, if only so that we can<br>
test properly :)<br>
<br>
Kevin Benton wrote:<br>
> This is just the code simulating the conntrack entries that would be<br>
> created by real traffic in a production system, right?<br>
><br>
> On Wed, Aug 9, 2017 at 11:46 AM, Jakub Libosvar <<a href="mailto:jlibosva@redhat.com">jlibosva@redhat.com</a><br>
> <mailto:<a href="mailto:jlibosva@redhat.com">jlibosva@redhat.com</a>>> wrote:<br>
><br>
> On 09/08/2017 18:23, Jeremy Stanley wrote:<br>
> > On 2017-08-09 15:29:04 +0200 (+0200), Jakub Libosvar wrote:<br>
> > [...]<br>
> >> Is it possible to switch used image for jenkins machines to use<br>
> >> back the older version? Any other ideas how to deal with the<br>
> >> kernel bug?<br>
> ><br>
> > Making our images use non-current kernel packages isn't trivial, but<span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">[Mooney, Sean K] so on that it would bre quite trivial to have disk image builder install<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The linux-image-virtual-hwe-16.04 linux-image-virtual-hwe-16.04-edge to pull in a 4.10 or<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">4.11 kernel respctivly if the default 4.4 is broken. We just need a new dib element to install the package<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">And modify the nodepool config to include it when it rebuildes the image every night. Alternitivly<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You can pull a vanilla kernel form
<a href="http://kernel.ubuntu.com/~kernel-ppa/mainline/">http://kernel.ubuntu.com/~kernel-ppa/mainline/</a><o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Follow the process documented here
<a href="https://wiki.ubuntu.com/Kernel/MainlineBuilds">https://wiki.ubuntu.com/Kernel/MainlineBuilds</a><o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">If you want to maintain testing with 4.4.x<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><br>
> > as Thierry points out in his reply this is not just a problem for<br>
> > our CI system. Basically Ubuntu has broken OpenStack (and probably a<br>
> > variety of other uses of conntrack) for a lot of people following<br>
> > kernel updates in 16.04 LTS so the fix needs to happen there<br>
> > regardless. Right now, basically, Ubuntu Xenial is not a good<br>
> > platform to be running OpenStack on until they get the kernel<br>
> > regression addressed.<br>
><br>
> True. Fortunately, the impact is not that catastrophic for Neutron as it<br>
> might seem on the first look. Not sure about the other projects, though.<br>
> Neutron doesn't create conntrack entries in production code - only in<br>
> testing. That said, agents should work just fine even with the<br>
> kernel bug.<br>
<br>
--<br>
Thierry Carrez (ttx)<br>
<br>
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