[Ocfs2-users] Weird lock

[Erik Terpstra]

Hi Nuno,

Nuno Fernandes wrote:
> That's because thay are waiting for something that the kernel will provide  
> (probably a lock). Please do:
>
> echo t > /proc/sysrq-trigger
>
> Check /var/log/messages and paste it here.
>   
Thanks I will provide the information next time it locks.
> The "another" node is also with high load? Is there any program running at 
> 100% CPU?
>   
We haven't checked if the other node has a high load, but that is 
unlikely, it seems like rebooting any node will fix it.
I will check it anyway next time.

When the system locks, the 'load' keeps rising but there is no 
particular process that seems to be the cause of it.

> If yes, i think that the first node is waiting for a lock that the "another" 
> node has. Until that lock is released all processes remain in "D" state and 
> the load keeps on rising.
>
> Also do:
>
> echo t > /proc/sysrq-trigger
>
> Check /var/log/messages and paste it here.
>
> Do a:
>
> ps fax
>
> also and paste it here.
>   
Thanks, I will.
> I also have that problem and i'm still trying to figure it out.
>   
Does rebooting an arbitrary node also fix your situation?

Regards,

Erik.