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Re: Debian 5.0.6 Kernel 2.6.26-2-openvz-amd64 dmesg /var/log/messages normal?



On Sat, 2010-10-16 at 20:04 +0100, Ben Hutchings wrote:
> On Sat, 2010-10-16 at 20:37 +0200, Mario Kleinsasser wrote:
> > Hi,
> > 
> > we are running abount eigth HP Blade servers with the official openvz
> > kernel from the debian repository.
> > On this blades we are faced with a LOT of those messages.
> > This messages are logged in dmesg and also in /var/log/messages.
> > 
> > This hardware is useing the bnx2x chipset. The exactly same setup but
> > running as vmware virtual machine is not logging those messages. The
> > system is running stable but I would like to ask what this messages
> > are kind of?
> > 
> > Maybe a combination of bnx2x firmware and vzeth?
> 
> This looks like the result of a combination of LRO (aka TPA) and
> bridging.  LRO should be disabled automatically on interfaces that have
> bridging or forwarding enabled, but there is nothing to stop you
> enabling it again.

Actually, that automatic behaviour was only added in Linux 2.6.27.  So
you need to disable LRO manually, either using ethtool or the bnx2x
module parameter disable_tpa.

Ben.

-- 
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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