[DRBD-user] examples of dual primary DRBD

Bart Coninckx bart.coninckx at telenet.be
Sat Oct 8 08:31:09 CEST 2011

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


On 10/08/11 08:28, Bart Coninckx wrote:
> On 10/08/11 00:25, Lars Ellenberg wrote:
>> On Fri, Oct 07, 2011 at 10:21:08PM +0200, Bart Coninckx wrote:
>>> On 10/06/11 22:03, Florian Haas wrote:
>>>> On 2011-10-06 21:43, Bart Coninckx wrote:
>>>>> Hi all,
>>>>>
>>>>> would you mind sending me examples of your crm config for a dual
>>>>> primary
>>>>> DRBD resource?
>>>>>
>>>>> I used the one on
>>>>>
>>>>> http://www.drbd.org/users-guide/s-ocfs2-pacemaker.html
>>>>>
>>>>> and on
>>>>>
>>>>> http://www.clusterlabs.org/wiki/Dual_Primary_DRBD_%2B_OCFS2
>>>>>
>>>>> and they both result into split brain, except for when I start drbd
>>>>> manually first.
>>>>
>>>> They clearly should not. Rather than soliciting other people's
>>>> configurations and then try to adapt yours based on that, why don't you
>>>> upload _your_ CIB (not just a "crm configure dump", but a full
>>>> "cibadmin
>>>> -Q") and your DRBD configuration to your pastebin/pastie/fpaste and let
>>>> people tell you where your problem is?
>>>
>>> OK, I posted the drbd.conf on http://pastebin.com/SQe9YxhY
>>>
>>> cibadmin -Q is on http://pastebin.com/gTZqsACq
>>>
>>> The split brain logging is on http://pastebin.com/7unKKkdi .
>>
>> I somehow think you added some "--force" or "--overwrite-data-of-peer"
>> to some drbdadm/drbdsetup primary invocation?
>
> I sure did (--overwrite-data-of-peer). Does this leave destructive traces?
>
> B.

By this I mean: I did use --overwrite-data-of-peer while setting up the 
resource, but I don't think I ever used it together with the "primary" 
option.

Thx,

B.




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