[Lustre-discuss] 1.6.5.1 OSS crashes

[Robin Humble]

On Fri, Jul 18, 2008 at 09:02:36AM -0400, Brian J. Murrell wrote:
>On Fri, 2008-07-18 at 05:52 -0400, Robin Humble wrote:
>> Hi,
>> 
>> I'm seeing coordinated OSS crashes with Lustre 1.6.5.1.
>> 
>> our RHEL4 OSS have been stable for ~months with these kernels:
>>   kernel-lustre-smp-2.6.9-67.0.4.EL_lustre.1.6.4.3
>>   kernel-lustre-smp-2.6.9-55.0.9.EL_lustre.1.6.4.2
>> 
>> but have crashed hard, twice, about 10hrs apart as soon as we started
>> using this kernel:
>>   kernel-lustre-smp-2.6.9-67.0.7.EL_lustre.1.6.5.1
>Can you try rebuilding the kernel, disabling SD_IOSTATS?

done. I rebuilt using the stock kernel's InfiniBand stack and
 # CONFIG_SD_IOSTATS is not set

 % cexec -p oss: uptime
oss x17:  18:45:07 up 1 day, 30 min,  1 user,  load average: 4.97, 7.00, 6.27
oss x18:  18:45:07 up 1 day, 23 min,  1 user,  load average: 4.18, 5.78, 5.71
oss x19:  18:45:07 up 1 day, 23 min,  1 user,  load average: 5.18, 5.66, 4.60

which is >> the 10hrs it was crashing at before.
good guess about the cause of the problem! :-)

maybe that rhel4 1.6.5.1 kernel rpm needs a respin then? seems like a
fairly critical issue... :-/

cheers,
robin