[Lustre-discuss] Fwd: lustre 1.6.3 prod - client kernel panic

[Balagopal Pillai]

Hi,

            Looks like the broadcom driver issue to me too. I had the 
similar problem with kernel panic
for the Lustre kernel on Dell pe1950 with Centos 4.5 and updating the 
bnx2 driver solved the issue.
Also the interface has the tendency to drop frames. Increasing the rx 
ring parameters with ethtool
fixes that problem.


Regards
Balagopal

Bernd Schubert wrote:
> Hi Matt,
>
> On Wednesday 07 November 2007 12:50:32 Matt wrote:
>   
>> Hi folks,
>>
>> Built servers with Centos 5, and installed the lustre rhel5_x86 rpms
>> successfully, modified grub and booted in to the new kernel.
>>
>> Configured a mgs/mdt two OSTs and a client.
>>
>> Now when running iozone from the client I always receive a kernel panic in
>> the lines of:
>>
>> Call trace: <IRQ> [<ffffffff88149e4b>] : bnx2:bnx2_start_xmt+0x49/0x4d8
>> Code: 49 8b 85 e8 00 00 00
>> RIP [<ffffffff88146e91>] : bnx2:bnx2_poll+0xf7/0xb75 RSP <......>
>> CR2: 0.....
>>  <0> Kernel Panic - not syncing : Fatal Exception
>>
>> I have attached a screenshot.
>>
>> When I bounce the client and remount I can access the lustre fs fine, seems
>> to be purely a client issue.
>>
>> Any ideas?
>>     
>
> looks very much like a bug in the broadcom nx2 driver. I would send it to 
> linux-netdev. And as a first try I would check whats happens when you disable 
> MSI for this driver.
>
> Cheers,
> Bernd
>
>
>
>