[DRBD-user] split-brain on Ubuntu 14.04 LTS after reboot of master node

Waldemar Brodkorb mail at waldemar-brodkorb.de
Sun Nov 15 11:03:17 CET 2015

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


Hi,
Digimer wrote,
> > property $id="cib-bootstrap-options" \
> >         dc-version="1.1.10-42f2063" \
> >         cluster-infrastructure="corosync" \
> >         stonith-enabled="false" \
> 
> And here's the core of the problem.
> 
> Configure and test stonith in pacemaker. Then, configure drbd to use
> 'fencing resource-and-stonith;' and configure 'crm-{un,}fence-peer.sh as
> the {un,}fence handlers.

So stonith is a hard requirement even when a simple reboot is done?

The docs is mentioning following:
"The ocf:linbit:drbd OCF resource agent provides Master/Slave
capability, allowing Pacemaker to start and monitor the DRBD
resource on multiple nodes and promoting and demoting as needed. You
must, however, understand that the drbd RA disconnects and detaches
all DRBD resources it manages on Pacemaker shutdown, and also upon
enabling standby mode for a node."

http://drbd.linbit.com/users-guide-8.4/s-pacemaker-crm-drbd-backed-service.html

So why demoting does not work when a reboot is done?
When I do a simple crm node standby; sleep 30; crm node online
everything is fine.

best regards
 Waldemar



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