<html><head></head><body>Hi,<br>
<br>
I'm not near the server for a while but network is set up<br>
<br>
2x broadcom nic with whatever driver works out of the box.<br>
<br>
Both set as slaves to bond0 which is in mode=4 with no explicit options.<br>
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Switch is a fairly basic tp-link but works almost identically to a Cisco. Has the 2 ports set up in a portchannel.<br>
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Short and long, this config works in earlier kernel, but not with kernel shipped in 7.2<br>
<br>
Release notes for RH7.2 suggest some work on bonding has been done, wonder if default options (LACP speed?) have changed?<br>
<br>
Jon<br><br><div class="gmail_quote">On 30 December 2015 09:44:02 GMT+00:00, Dan Kenigsberg <danken@redhat.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="k9mail">On Tue, Dec 29, 2015 at 09:57:07PM +0000, Jon Archer wrote:<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;"> Hi Stefano,<br /> <br /> It's definitely not the switch, it seems to be the latest kernel package<br /> (kernel-3.10.0-327.3.1.el7.x86_64) which stops bonding working correctly,<br /> reverting back to the previous kernel brings the network up in 802.3ad mode<br /> (4).<br /> <br /> I know, from reading the release notes of 7.2, that there were some changes<br /> to the bonding bits in the kernel so i'm guessing maybe some defaults have<br /> changed.<br /> <br /> I'll keep digging and post back as soon as i have something.<br /> <br /> Jon<br /> <br /> On 29/12/15 19:55, Stefano Danzi wrote:<br /><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;">Hi! I didn't solve yet. I'm still using mode 2 on bond interfac
e.
What's<br />your switch model and firmware version?<br /></blockquote></blockquote><br />Hi Jon and Stefano,<br /><br />We've been testing bond mode 4 with (an earlier)<br />kernel-3.10.0-327.el7.x86_64 and experienced no such behaviour.<br /><br />However, to better identify the suspected kernel bug, could you provide<br />more information regarding your network connectivity?<br /><br />What is the make of your NICs? Which driver do you use?<br /><br />Do you set special ethtool opts (LRO with bridge was broken in 7.2.0<br />kernel if I am not mistaken)?<br /><br />You have the ovirtmgmt bridge on top of your bond, right?<br /><br />Can you share your ifcfg*?<br /><br /></pre></blockquote></div><br>
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