<div dir="ltr">Mmm... I am unable to compile <span style="font-family:arial,sans-serif;font-size:12.800000190734863px">openvswitch-datapath-dkms from Havana Ubuntu Cloud Archive (on top of a fresh install of Ubuntu 12.04.3), look:</span><div>
<font face="arial, sans-serif"><br></font></div><div><span style="font-family:arial,sans-serif">------</span><font face="arial, sans-serif"><br></font></div><div><div><font face="courier new, monospace">root@havabuntu-1:~# uname -a</font></div>
<div><font face="courier new, monospace">Linux havabuntu-1 3.8.0-31-generic #46~precise1-Ubuntu SMP Wed Sep 11 18:21:16 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux</font></div><div><font face="courier new, monospace"><br></font></div>
<div><font face="courier new, monospace"><div>root@havabuntu-1:~# dpkg -l | grep openvswitch-datapath-dkms</div><div>ii openvswitch-datapath-dkms 1.10.2-0ubuntu1~cloud0 Open vSwitch datapath module source - DKMS version</div>
</font></div><div><font face="courier new, monospace"><br></font></div><div><div><font face="courier new, monospace">root@havabuntu-1:~# dpkg-reconfigure openvswitch-datapath-dkms</font></div><div><font face="courier new, monospace"><br>
</font></div><div><font face="courier new, monospace">------------------------------</font></div><div><font face="courier new, monospace">Deleting module version: 1.10.2</font></div><div><font face="courier new, monospace">completely from the DKMS tree.</font></div>
<div><font face="courier new, monospace">------------------------------</font></div><div><font face="courier new, monospace">Done.</font></div><div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">Creating symlink /var/lib/dkms/openvswitch/1.10.2/source -></font></div>
<div><font face="courier new, monospace"> /usr/src/openvswitch-1.10.2</font></div><div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">DKMS: add completed.</font></div>
<div><font face="courier new, monospace"><br></font></div><div><font face="courier new, monospace">Kernel preparation unnecessary for this kernel. Skipping...</font></div><div><font face="courier new, monospace"><br></font></div>
<div><font face="courier new, monospace">Building module:</font></div><div><font face="courier new, monospace">cleaning build area....(bad exit status: 2)</font></div><div><font face="courier new, monospace">./configure --with-linux='/lib/modules/3.8.0-31-generic/build' && make -C datapath/linux............(bad exit status: 2)</font></div>
<div><font face="courier new, monospace">Error! Bad return status for module build on kernel: 3.8.0-31-generic (x86_64)</font></div><div><font face="courier new, monospace">Consult /var/lib/dkms/openvswitch/1.10.2/build/make.log for more information.</font></div>
</div><div style="font-family:arial,sans-serif">------</div></div><div><span style="font-family:arial,sans-serif;font-size:12.800000190734863px"><br></span></div><div><span style="font-family:arial,sans-serif;font-size:12.800000190734863px">Contents of </span><font face="arial, sans-serif">/var/lib/dkms/openvswitch/1.10.2/build/make.log:</font></div>
<div><font face="arial, sans-serif"><br></font></div><div><a href="http://paste.openstack.org/show/47888/">http://paste.openstack.org/show/47888/</a><font face="arial, sans-serif"><br></font></div><div><br></div><div>I also have the packages: build-essential, linux-headers, etc, installed...</div>
<div><br></div><div>So, James, have you this module compiled on your test environment? I mean, does this command: "dpkg-reconfigure openvswitch-datapath-dkms" works for you?!</div><div><br></div><div><font face="arial, sans-serif">NOTE: </font><span style="font-family:arial,sans-serif">It also doesn't compiles when with Linux 3.2 (Ubuntu 12.04.1).</span></div>
<div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">Thanks,</font></div><div><font face="arial, sans-serif">Thiago</font></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">
On 2 October 2013 22:28, Robert Collins <span dir="ltr"><<a href="mailto:robertc@robertcollins.net" target="_blank">robertc@robertcollins.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I believe it's still needed: upstream kernel have pushed back against<br>
the modules it provides, but neutron needs them to deliver the gre<br>
tunnels.<br>
<br>
-Rob<br>
<div class="HOEnZb"><div class="h5"><br>
On 3 October 2013 13:15, Martinx - ジェームズ <<a href="mailto:thiagocmartinsc@gmail.com">thiagocmartinsc@gmail.com</a>> wrote:<br>
> Hi James,<br>
><br>
> Let me ask you something...<br>
><br>
> Are you using the package `openvswitch-datapath-dkms' from Havana Ubuntu<br>
> Cloud Archive with Linux 3.8?<br>
><br>
> I am unable to compile that module on top of Ubuntu 12.04.3 (with Linux 3.8)<br>
> and I'm wondering if it is still required or not...<br>
><br>
> Thanks!<br>
> Thiago<br>
><br>
><br>
> On 2 October 2013 06:14, James Page <<a href="mailto:james.page@ubuntu.com">james.page@ubuntu.com</a>> wrote:<br>
>><br>
>> -----BEGIN PGP SIGNED MESSAGE-----<br>
>> Hash: SHA256<br>
>><br>
>> Hi Folks<br>
>><br>
>> I'm seeing an odd direction performance issue with my Havana test rig<br>
>> which I'm struggling to debug; details:<br>
>><br>
>> Ubuntu 12.04 with Linux 3.8 backports kernel, Havana Cloud Archive<br>
>> (currently Havana b3, OpenvSwitch 1.10.2), OpenvSwitch plugin with GRE<br>
>> overlay networks.<br>
>><br>
>> I've configured the MTU's on all of the physical host network<br>
>> interfaces to 1546 to add capacity for the GRE network headers.<br>
>><br>
>> Performance between instances within a single tenant network on<br>
>> different physical hosts is as I would expect (near 1GBps), but I see<br>
>> issues when data transits the Neutron L3 gateway - in the example<br>
>> below churel is a physical host on the same network as the layer 3<br>
>> gateway:<br>
>><br>
>> ubuntu@churel:~$ scp hardware.dump <a href="http://10.98.191.103" target="_blank">10.98.191.103</a>:<br>
>> hardware.dump<br>
>> 100% 67MB 4.8MB/s<br>
>> 00:14<br>
>><br>
>> ubuntu@churel:~$ scp 10.98.191.103:hardware.dump .<br>
>> hardware.dump<br>
>> 100% 67MB<br>
>> 66.8MB/s 00:01<br>
>><br>
>> As you can see, pushing data to the instance (via a floating ip<br>
>> 10.98.191.103) is painfully slow, whereas pulling the same data is<br>
>> x10+ faster (and closer to what I would expect).<br>
>><br>
>> iperf confirms the same:<br>
>><br>
>> ubuntu@churel:~$ iperf -c 10.98.191.103 -m<br>
>> - ------------------------------------------------------------<br>
>> Client connecting to 10.98.191.103, TCP port 5001<br>
>> TCP window size: 22.9 KByte (default)<br>
>> - ------------------------------------------------------------<br>
>> [ 3] local 10.98.191.11 port 55330 connected with 10.98.191.103 port 5001<br>
>> [ ID] Interval Transfer Bandwidth<br>
>> [ 3] 0.0-10.0 sec 60.8 MBytes 50.8 Mbits/sec<br>
>> [ 3] MSS size 1448 bytes (MTU 1500 bytes, ethernet)<br>
>><br>
>> ubuntu@james-page-bastion:~$ iperf -c 10.98.191.11 -m<br>
>><br>
>><br>
>> - ------------------------------------------------------------<br>
>> Client connecting to 10.98.191.11, TCP port 5001<br>
>> TCP window size: 23.3 KByte (default)<br>
>> - ------------------------------------------------------------<br>
>> [ 3] local 10.5.0.2 port 52190 connected with 10.98.191.11 port 5001<br>
>> [ ID] Interval Transfer Bandwidth<br>
>> [ 3] 0.0-10.0 sec 1.07 GBytes 918 Mbits/sec<br>
>> [ 3] MSS size 1448 bytes (MTU 1500 bytes, ethernet)<br>
>><br>
>><br>
>> 918Mbit vs 50Mbits.<br>
>><br>
>> I tcpdump'ed the traffic and I see alot of duplicate acks which makes<br>
>> me suspect some sort of packet fragmentation but its got me puzzled.<br>
>><br>
>> Anyone have any ideas about how to debug this further? or has anyone<br>
>> seen anything like this before?<br>
>><br>
>> Cheers<br>
>><br>
>> James<br>
>><br>
>><br>
>> - --<br>
>> James Page<br>
>> Ubuntu and Debian Developer<br>
>> <a href="mailto:james.page@ubuntu.com">james.page@ubuntu.com</a><br>
>> <a href="mailto:jamespage@debian.org">jamespage@debian.org</a><br>
>> -----BEGIN PGP SIGNATURE-----<br>
>> Version: GnuPG v1.4.14 (GNU/Linux)<br>
>> Comment: Using GnuPG with Thunderbird - <a href="http://www.enigmail.net/" target="_blank">http://www.enigmail.net/</a><br>
>><br>
>> iQIcBAEBCAAGBQJSS+QSAAoJEL/srsug59jD8ZcQAKbZDVU8KKa7hsic7+ulqWQQ<br>
>> EFbq8Im5x4mQY7htIvIOM26BR0ktAO5luE7zMBXsA4AwPud1BQSGhw89/NvNhADT<br>
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>> Y7nEv0mItaZ4MBSI9RZcqsDUl7UbbdlGejSWhJcwp/127HMU9nYwWNz5UHJjsGZ1<br>
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>> b/8rk8nB1HB74Wh+tQP4WRQCZYso15nB6ukIyIU24Qti2tXtXDdKwszEoblCwCT3<br>
>> YZJTERNOENURlUEFwgi6FNL+nZomSG0UJU6qqDGiUJkbSF7SwJm4y8/XRlJM2Ihn<br>
>> wyxFB0qe3YdMqgDLZn11GwCDqn3g11hYaocHNUyRaj/tgxhGKbOFvix5kz3I4V7T<br>
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>> sWyQmbb6Z/ypFV9xXiLRfH2fW2bAQQHgiQGvy9apoE78BWYdnsD8Q3Ekwag6lFqp<br>
>> yUwt/RcRXS1PbLG4EGFW<br>
>> =HTvW<br>
>> -----END PGP SIGNATURE-----<br>
>><br>
>> _______________________________________________<br>
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><br>
><br>
><br>
> _______________________________________________<br>
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><br>
<br>
<br>
<br>
</div></div><span class="HOEnZb"><font color="#888888">--<br>
Robert Collins <<a href="mailto:rbtcollins@hp.com">rbtcollins@hp.com</a>><br>
Distinguished Technologist<br>
HP Converged Cloud<br>
</font></span></blockquote></div><br></div>