[Ocfs-users] CPU 100% with any activity on OCFS

[Sunil Mushran]

Do:
echo t >/proc/sysrq-trigger

Have a netdump server to capture the stack traces. That should show
where it is spinning.

Ivan Wong wrote:
> Hi experts,
>  
> Just upgraded from 1.0.9-9 to 1.0.13-1. All went smooth but every two 
> months we have a problem of CPU gets 100% on any activity done on OCFS 
> mountpoints. (mv, cp, gzip, rm, etc). The only way I know how to solve 
> now is reboot the stack but this cost us downtime and this is only a 
> band aid not a solution.
>  
> Found some msg on /var/log/message before this happen that may or may 
> not be related:
>  
> Dec  4 20:13:39 x335-215 kernel: ocfs: Removing x335-235-HB (node 5) 
> from clustered device (8,36)
> Dec  4 20:14:21 x335-215 kernel: ocfs: Adding x335-235-HB (node 5) to 
> clustered device (8,36)
> My current version is:
>  
> /e2open/home/oracle: 1004>rpm -qa | grep ocfs
> ocfs-support-1.0.10-1
> ocfs-tools-1.0.10-1
> ocfs-2.4.9-e-smp-1.0.13-1
>  
> Output from top:
>  
>   PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
>  6299 oracle    25   0   412  412   352 R    99.9  0.0  14:28 cp
> 25751 root      25   0  3584 3584   828 R    97.5  0.0 260:46 bpbkar
>  3628 oracle    15   0 18856  17M 13092 D     7.7  0.4   3:21 oracle
>  8158 oracle    15   0  1200 1200   772 R     0.3  0.0   0:01 top
>     8 root      34  19     0    0     0 RWN   0.0  0.0   1:21 
> ksoftirqd_CPU2
>
> Any advice what is the problem?
>  
> Thanks / regards,
>  
> Ivan Wong
> Database Administrator
>  
> e2Open Inc. (www.e2open.com <http://www.e2open.com/>)
> Suite 34.03, Level 34,
> Menara Citibank,
> 156, Jalan Ampang,
> 50450 Kuala Lumpur, Malaysia
> DID: +603 2776 6392
> Tel: +603 2776 6300
> Fax: +603 2712 9112
>  
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