[Ocfs2-users] About heartbeat threshold and drbd ...

[Sunil Mushran]

Refer to the ocfs2 faq.

Sébastien CRAMATTE wrote:
> Hi
>
> I've setuped  drbd 0.8pre6 over OCFS2 and I've got some stability
> problems ...
> I've submited somes erros as bug on  ocfs2 bugzilla but doesn't appear I
> supose that are already referenced ....
>
> I've send this to the drbd ml  and  "Lars" talk about  
>
> ocfs2 self-fencing threshold of 7 ... how can I change it to 10 ? 
> Sorry for this basic question but I'm newbie in OCFS2
>
>
> Regards
>
> Lars Ellenberg a écrit :
>   
>> / 2006-11-05 21:37:52 +0100
>> \ Sébastien CRAMATTE:
>>   
>>     
>>> I've speak too quickly ...
>>> 5 mn after ...
>>> I've copied  (using rsync)  my /home directory to  the mounted  ocfs2  
>>> folder ... works quite well
>>> But when I've tried to delete somes files inside the cluster  .... 
>>> Kernel Panic !!!
>>>     
>>>       
>> well, if it was ocfs2 self-fencing,
>> make sure that your timeout (ocfs heartbeat retry) settings
>> are suitable for your setup... the default ocfs2 self-fencing threshold
>> of 7 ocfs2 heartbeat retries (effective kernel panic after 12 seconds) 
>> is _way_ too short for a default drbd timeout of 10 seconds.
>>
>>   
>>     
>>> drbd0: Split-Brain detected, dropping connection!
>>>     
>>>       
>> you have to decide which node has to be sync target,
>> make it secondary, and then tell it to connect
>> and "discard" its data:
>>
>> # drbdadm -- --discard-my-data connect whatever
>>
>>   
>>     
>
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