netdev - RE: loosing IPMI-card by loading netconsole

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Date:	Fri, 14 May 2010 07:51:38 -0700
From:	"Ronciak, John" <john.ronciak@...el.com>
To:	Henning Fehrmann <henning.fehrmann@....mpg.de>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
CC:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Matt Mackall <mpm@...enic.com>,
	Carsten Aulbert <carsten.aulbert@....mpg.de>,
	Tejun Heo <tj@...nel.org>
Subject: RE: loosing IPMI-card by loading netconsole

Sorry to hear about the problem you are having Henning.  What do you mean when you say "it disappears"?  Can both eth0 and eth1 ping (or be pinged)?  Do all the networking devices still show up in the system when you do an 'lspci'?  What happens if you down and then up the interface you are having problems with?  Does 'rmmod' do the same thing as your removal method?  Is there anything in the system logs saying anything about the interfaces?

We have not had reports of this so this is a bit unusual.  Please let us know.

Does this happen on other systems as well or just one particular system?


Cheers,
John


> -----Original Message-----
> From: Henning Fehrmann [mailto:henning.fehrmann@....mpg.de]
> Sent: Friday, May 14, 2010 6:46 AM
> To: Kirsher, Jeffrey T
> Cc: Brandeburg, Jesse; Allan, Bruce W; Waskiewicz Jr, Peter P; Ronciak,
> John; netdev@...r.kernel.org; Matt Mackall; Carsten Aulbert; Tejun Heo
> Subject: loosing IPMI-card by loading netconsole
> 
> Hello,
> 
> We have SuperMicro PDSM 2+ boards together with 82573E and 82573L Intel
> NICs.
> Additional we have IPMI cards which are tunneled via the 82573E NIC.
> 
> We are using the e1000e driver for NICs together with the netconsole
> driver.
> (netconsole netconsole=4444@...ent_IP/eth1,514@...ver_IP/server_MAC).
> Netconsole is using the NIC which is NOT used by the IPMI card.
> 
> Usually we are able to access the IPMI card remotely with ipmitools.
> 
> Having the kernel 2.6.27.39 installed everything worked together, the
> NICs, remotely accessing the IPMI cards and netconsole.
> 
> The driver version of e1000e is 0.3.3.3-k6.
> 
> Using a more recent kernel: 2.6.32.7 we lost the ability of remotely
> accessing the IPMI card when the netconsole driver is loaded.
> The IPMI card is accessible before the netconsole driver is loaded and
> disappears once we use netconsole. Even unloading netconsole does not
> help then.
> 
> We get the IPMI card back when 'removing' eth0:
> echo 1 > /sys/devices/pci0000:00/0000:00:1c.4/0000:0d:00.0/remove
> 
> 0d:00.0 is eth0.
> 
> 
> The version of the e1000e driver is 1.0.2-k2.
> 
> I compiled and loaded a later version of this driver (1.1.19) without
> solving this problem.
> 
> 
> For eth0 (82573E) we have a firmware version 0.15-4 installed and for
> eth1 we use the firmware version 0.5-7. But this is the same for both
> kernel versions.
> 
> Do you have an idea?
> 
> Thank you and cheers,
> Henning