[DRBD-user] DRBD MC - unstable cluster with latest corosync and pacemaker

Lars Ellenberg lars.ellenberg at linbit.com
Sat Jul 24 14:52:00 CEST 2010

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


On Sat, Jul 24, 2010 at 02:09:47PM +0200, Rasto Levrinc wrote:
> 
> On Fri, July 23, 2010 10:44 pm, Jamie L Sammons wrote:
> > Environment:
> >
> >
> > CentOS 5.5
> > DRBD 8.3.8
> > Corosync 1.2.5
> > Pacemaker 1.0.9
> >
> >
> > Whenever I use DRBD MC to manage the configuration above, I run into
> > stability problems with the cluster.  Here is some of the behavior I have
> > observed:
> >
> >
> > 1. Corosync crash across cluster members.  When I try to restart corosync
> > I receive a Bus Error and cannot restart it until I reboot the system.
> > 2. Frequent disconnects and reconnects across the cluster members.
> > 3. Unresponsive cluster. Whenver I try to manage the cluster in DRBD MC
> > commands are ignored.
> 
> Yes, the problem is that 'corosync -v' leaks shared memory in Corosync
> 1.2.5 and it happens that DRBD MC runs this command regularly to find out
> the version. Reboot clears the shared memory.
> 
> For now you can remove this line from drbd-gui-helper:
> ($cs_version) = `$cs_prog -v` =~ /'(\d+\.\d+\.\d+)'/;
> 
> and run DMC with --keep-helper option, or use different Corosync version.

I'd recommend to use heartbeat as the cluster communication layer.

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

DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
__
please don't Cc me, but send to list   --   I'm subscribed



More information about the drbd-user mailing list