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Hi,
I'm not near the server for a while but network is set up
2x broadcom nic with whatever driver works out of the box.
Both set as slaves to bond0 which is in mode=4 with no explicit options.
Switch is a fairly basic tp-link but works almost identically to a Cisco. Has the 2 ports
set up in a portchannel.
Short and long, this config works in earlier kernel, but not with kernel shipped in 7.2
Release notes for RH7.2 suggest some work on bonding has been done, wonder if default
options (LACP speed?) have changed?
Jon
On 30 December 2015 09:44:02 GMT+00:00, Dan Kenigsberg <danken(a)redhat.com> wrote:
On Tue, Dec 29, 2015 at 09:57:07PM +0000, Jon Archer wrote:
> Hi Stefano,
>
> It's definitely not the switch, it seems to be the latest kernel
package
> (kernel-3.10.0-327.3.1.el7.x86_64) which stops bonding working
correctly,
> reverting back to the previous kernel brings the network up in
802.3ad mode
> (4).
>
> I know, from reading the release notes of 7.2, that there were some
changes
> to the bonding bits in the kernel so i'm guessing maybe some defaults
have
> changed.
>
> I'll keep digging and post back as soon as i have something.
>
> Jon
>
> On 29/12/15 19:55, Stefano Danzi wrote:
> >Hi! I didn't solve yet. I'm still using mode 2 on bond interface.
What's
> >your switch model and firmware version?
Hi Jon and Stefano,
We've been testing bond mode 4 with (an earlier)
kernel-3.10.0-327.el7.x86_64 and experienced no such behaviour.
However, to better identify the suspected kernel bug, could you provide
more information regarding your network connectivity?
What is the make of your NICs? Which driver do you use?
Do you set special ethtool opts (LRO with bridge was broken in 7.2.0
kernel if I am not mistaken)?
You have the ovirtmgmt bridge on top of your bond, right?
Can you share your ifcfg*?
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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<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>
<br>
Switch is a fairly basic tp-link but works almost identically to a Cisco. Has the 2 ports
set up in a portchannel.<br>
<br>
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 &lt;danken(a)redhat.com&gt; 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>
-- <br>
Sent from my Android device with K-9 Mail. Please excuse my
brevity.</body></html>
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