[Pacemaker] split brain in drbd dual primary setup

Lars Ellenberg lars.ellenberg at linbit.com
Wed Dec 9 16:42:49 UTC 2009


On Tue, Dec 08, 2009 at 09:24:57AM +0100, Andrew Beekhof wrote:
> On Mon, Dec 7, 2009 at 2:17 PM, unni krishnan <unnikrishnan.a at gmail.com> wrote:
> > Ok, one more doubt. How heartbeat + pacemaker is going to detect that
> > the drbd is in stand alone state. There is no cluster partition. Only
> > drbd is disconnected.
> 
> resource monitoring.
> i would assume the RA looks for this case

You need resource level fencing.
Have a look for fencing, the fence-peer handler,
and "crm-fence-peer.sh" in the DRBD User's Guide.

-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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