[Gllug] CentOS release 5.4 (Final) + Nic Bonding + machine goes out of network randomly + 2.6.18-164.6.1.el5 #1 SMP kernel

[James Pearson]

Narender wrote:
> Hi
> 
> We are facing a strange problem from past few days. Below are the logs
> attached for ref.
> 
> We are using nic bonding to our dell server. It has centos 5.4
> installed with 4 nic cards. This machine was working good from past
> few months. But from previous 2-3 days it went out of network by
> itself.
> ...
> bnx2: eth0: using MSIX

<https://rhn.redhat.com/errata/RHSA-2010-0398.html>

> in certain circumstances, under heavy load, certain network interface
> cards using the bnx2 driver and configured to use MSI-X, could stop
> processing interrupts and then network connectivity would cease.
> (BZ#587799)

Also see:

<https://bugzilla.redhat.com/show_bug.cgi?id=520888>

and

<http://bugs.centos.org/view.php?id=3832>

i.e. either upgrade your kernel or add the line:

options bnx2 disable_msi=1

to /etc/modprobe.conf

James Pearson
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