[DRBD-user] Automatic split brain recovery policies - after-sb-0pri - discard-older-primary

GAUTIER Hervé herve.gautier at thalesgroup.com
Fri Jan 9 12:30:06 CET 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Dominik Klein a écrit :
> When falling asleep in the train yesterday, I think I got the answer to
> this question.
>
>   
>> In case of the following situation:
>>
>> nodes node1 and node2 are disconnected
>> At t0, split brain
>> At t1, node1 becomes primary
>> At t2, node1 becomes secondary
>> At t3, node2 becomes primary
>> At t4, node2 becomes secondary
>>     
>
> So node1 is "old" and node2 is "young".
>
>   
>> At t5, node1 becomes primary
>> At t6, node1 becomes secondary
>>     
>
> Now node2 is old and node1 is young.
>
>   
>> At t7, node2 becomes primary
>> At t8, node2 becomes secondary
>>     
>
> Now node1 is old again.
>
> Keep on doing this and I guess you have your answer. Please correct me
> if that's wrong and falling asleep did not solve this question :)
>   

Yes, it could be the solution, but I am not sure as I think GI tuple are 
involved and I don't know/understand exactly when GI tuple are changed.

Thank again Dominik !

-- 
Hervé GAUTIER




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