[Ocfs2-users] High Load Average

[Jeronimo Bezerra]

It seems that my only option is upgrade my kernel package..

I only find 2.6.24 in this package: linux-image-2.6-amd64-etchnhalf .  
I will study it better.

Well, if I intent to upgrade, what´s your suggestion: upgrade in the  
good server (B) or in problematic server (A)? Any chance of a file  
system crash?

My ocfs2-tools: 1.2.1-1.3

I didn´t find 1.4 on debian apt.

Thanks,

Jeronimo

Citando Sunil Mushran <sunil.mushran at oracle.com>:

> Debian etch is 2.6.24 based.
>
> Jeronimo Bezerra wrote:
>> Hi Sunil, thanks for your answer.
>>
>> I use packages from Debian apt, and there is not new version of   
>> kernel package :(. And I intend in this moment only solve this   
>> problem to turn on my server again. What could I do? Is there   
>> anything in this moment I can do?
>>
>> Another question: Can I upgrade my kernel just overwriting the   
>> actual image? Is the any chance for crash my ocfs2 file system? Can  
>>  I have two server with different kernel versions?
>>
>> Thanks for your attention,
>>
>> Jeronimo
>>
>> Sunil Mushran escreveu:
>>
>>> 2.6.18 is a very old release. I would recommend upgrading to kernel
>>> 2.6.21 or later.
>>>
>>> Jerônimo Bezerra wrote:
>>>
>>>> Hello all,
>>>>
>>>> I have a scenario here with two Debian 4.0 servers, kernel   
>>>> 2.6.18-4-amd64, and ocfs2-tools 1.2.1-1.3.
>>>> These two servers have 16 CPU (4 x Dual Core x HT) and 8GB RAM,   
>>>> with shared storage with qla2340 in a IBM DS4500 Storage.
>>>>
>>>> Everything was working fine until yesterday at morning, when for   
>>>> some unknown reason, the load average of both servers became too   
>>>> high, almost 200. CPU utilization, on both, was 16-18%, and   
>>>> memory using 7GB, uptime of 22 days. Disk I/0 using at least 3   
>>>> MB/s. Pings to crossover interface (heartbeat) normally, no   
>>>> packet loss.
>>>>
>>>> I use these servers as a mail server, and nobody could connect to  
>>>>  servers because (I think) the high load average.
>>>>
>>>> Well, I reboot both servers, and after boot, same thing: in   
>>>> question of minutes the load average was 150. But one interesting  
>>>>  thing:
>>>> when I shutdown the server A, the server B worked fine! If I turn  
>>>>  on server A and shutdown server B, high load average on A. So,  
>>>> as  I shutdown the server A and the things gone fine, I keep the   
>>>> server A down for 8 hours. At afternoon, I turned on again, and,   
>>>> surprise, high load on both servers when OCFS2 started. I had to   
>>>> shutdown both servers and turn on just server B to established   
>>>> again. At night, I turned on the server A to try to discovery   
>>>> what's going on. I let both servers turned on all night ( server   
>>>> A with no service and server B working normally), and when I   
>>>> arrived at morning today, another surprise: the load average of   
>>>> server B was on 1200(!) and server A 0 (no service running).
>>>>
>>>> When I started services on server A and shutdown server B, the   
>>>> load on server A became 200 in question of seconds.
>>>>
>>>> I again shutdown the server A, and after that, turned on server   
>>>> B. Now everything is working fine, load average of 3 on server B.
>>>>
>>>> I didn't update the kernel, Debian, storage or anything else.   
>>>> There's no message on syslog, dmesg or screen. There's no process  
>>>>  with more then 2% of CPU or memory. I really don't know what to   
>>>> do and I have no clues.
>>>>
>>>> Please, could someone help me?
>>>>
>>>> Thanks a log
>>>>
>>>> Jeronimo
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Ocfs2-users mailing list
>>>> Ocfs2-users at oss.oracle.com
>>>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>>>>
>>
>>
>> _______________________________________________
>> Ocfs2-users mailing list
>> Ocfs2-users at oss.oracle.com
>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>>



Atenciosamente,

-------------------------
Jerônimo Aguiar Bezerra
CCNA, LPICv1, AFCC
Analista de Suporte
Divisão de Suporte
CPD/UFBA-PoP-BA/RNP

----------------------------------------------------------------
Universidade Federal da Bahia - http://www.portal.ufba.br