[DRBD-user] Split-Brain: how to solve?

George H george.dma at gmail.com
Wed Jan 17 20:58:33 CET 2007

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

The best way to prevent split-brain situations is to have STONITH
devices set up with your cluster. That or quarom nodes.

I had a similar problem where split-brain would occur, something in
node 1 would fail and cause heartbeat to tell node2 to take over, but
drbd is still connected on a second LAN without problems. So node2
takes over but cannot take drbd resource for itself.  Thats when
STONITH helps, stonith will kill node1 (shut down the power) so that
node2 can successfuly take drbd resource.

On 1/17/07, Enrico Morelli <enrico.morelli at gmail.com> wrote:
> Dear all,
> I'm trying drbd-8.0rc1 and heartbeat 2. Nothing works well. But in
> this moment I reached the Split-Brain condition, and I'm unable to
> recovery the situation. I tried all command format without any result.
> I found another message in the list with the same situation and the
> suggestion was:
> drbdadm ----discard-my-data connect all
> but drbdadm hasn't this flag, only drbdsetup has and doesn't works for me.
> How can I solve this situation?
> Thanks
> Enrico
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> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user

"Nothing is impossible for the person that doesn't have to do it"
"The probability of anything happening is in inverse ratio to its desirability"
"If I were a roman statue, I'd be made alabastard"
George H
george.dma at gmail.com

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