[f-nsp] debugging restarts

[Tomasz Szewczyk]

Joseph Hardeman pisze:
> Tomek
>
> I did both of these and I have also cleared the dumps and am waiting 
> for the next restart.
>
> How do I debug the dm save output?  Is there a program or guide that 
> will help me understand what it means and what is causing the restarts?
I don't think it is possible. Probably it is useful only for TAC, but 
you can take a look at "Current Task" field. It will give you a hint 
where to look at the problem cause. But I think the best you can do is 
to sent this output to TAC or try to use latest patch code from FI 
release branch.

Tomek

>
> Thanks
>
> Joe
>
> Tomasz Szewczyk wrote:
>> Hi,
>>
>> I'm not sure if it is available on FI, but you can try to make sh 
>> tech end log the output. A part of this output is "dm save" results 
>> which can give overview of warm restart cause. This command exists on 
>> XMR/MLX and is useful in such cases. If you have this command and "dm 
>> save" or "sh tech" shows not correct date:
>>
>> Created on     : 05:00:19 GMT+01 Tue Jul 01 2008
>>
>> You can try "dm clear" - and wait for another restart. The crash dump 
>> is not overwritten if you don't clear it.
>>
>> Tomek
>>
>> On
>> Joseph Hardeman pisze:
>>> Hi Jeroen,
>>>
>>> We have an external syslog server, but nothing shows up except the 
>>> Warm restart.  I need to take a put a console cable and hope 
>>> something shows up screen before crash.
>>>
>>> Thanks
>>>
>>> Joe
>>>
>>> Jeroen Wunnink wrote:
>>>> I've had occasional reboots on BI (Ironcore and Jetcore) when using 
>>>> aggregation options combined with BGP.
>>>>
>>>> But try setting up an external syslog server and see if anything 
>>>> strange pops up right before the reboot.
>>>>
>>>> Joseph Hardeman wrote:
>>>>> Hi Aaron,
>>>>>
>>>>> Thank you for the info.  And that is my gut feeling that its the 
>>>>> management card, but I have been instructed to find a "definitive" 
>>>>> reason for the reboots.
>>>>> So if someone knows how I can pull any crash info from the fi and 
>>>>> how to analyze it that would be great.
>>>>> Joe
>>>>>
>>>>> Aaron Wendel wrote:
>>>>>> I had this exact issue on a BI about a month ago.  It got worse 
>>>>>> and worse
>>>>>> until it started rebooting every couple minutes.  No reason was 
>>>>>> ever found.
>>>>>> I replaced the management card and it hasn't restarted since.
>>>>>>
>>>>>> Aaron
>>>>>>
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: foundry-nsp-bounces at puck.nether.net
>>>>>> [mailto:foundry-nsp-bounces at puck.nether.net] On Behalf Of Joseph 
>>>>>> Hardeman
>>>>>> Sent: Thursday, July 09, 2009 12:23 PM
>>>>>> To: foundry-nsp at puck.nether.net
>>>>>> Subject: [f-nsp] debugging restarts
>>>>>>
>>>>>> Hi Everyone,
>>>>>>
>>>>>> I have another fi that I found has started to restart on its 
>>>>>> own.  I am getting "Warm start" in the logs that alerted me.  I 
>>>>>> did a show tech-support but I did not see a reason for the 
>>>>>> restarts.  I have enabled "debug all" and set "debug destination 
>>>>>> log" until I can get a console cable on it and redirect to console.
>>>>>>
>>>>>> All power supplies and fans show ok.
>>>>>>
>>>>>> Any suggestions on what to check to see why the system is 
>>>>>> restarting?  I am not seeing anything in the logs or sh commands 
>>>>>> that is giving me an idea on what is causing the restarts.
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> Joe
>>>>>> _______________________________________________
>>>>>> foundry-nsp mailing list
>>>>>> foundry-nsp at puck.nether.net
>>>>>> http://puck.nether.net/mailman/listinfo/foundry-nsp
>>>>>>
>>>>>>
>>>>>>   
>>>>> _______________________________________________
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>>>>
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>>
>>
>


-- 
Tomasz Szewczyk
Poznan Supercomputing and Networking Center
e-mail: tomeks at man.poznan.pl
tel: +48 61 8582040
fax: +48 61 8525954