Hi, On Tue, Oct 20, 2009 at 10:32:07AM +0200, [email protected] wrote: > Hello > > I am running an active - active cluster (mutual takeover) on RedHat 5. > - 2 Nodes, shared storage > - heartbeat-3.0.0-33.2 > - pacemaker-1.0.5-4.1 > - stonith > - 2 Oracle Databases for development and production, in failover state both > runnung on one node. > > I configured a group for a "base", including ip and mountpoints > and > a group including Oracle Listener and database. > I also configured, orders, preferred locations on this groups and all working > fine (mostly). > > Twotimes I had a ugly situation in failover -state, because the > node running the basegroup before, doesn't stop Oracle, doesn't > unmount the Oracle filesystems and the second node mounts it > anyway. It is for Oracle databases a disastrous situation, > because the filesystems becomes partial distroyed and the > databse is in a inconsistent state and needs a recovery of the > whole datbase. Maybe it is a Split Brain situation and stonith > should switch of the other node, and I am sure the solution is > a better configuration of the cluster.
stonith should protect resources from split brain. If you have stonith configured, even if it fails to fence a node, the cluster won't start resources. I wonder what has happened here. If you still have logs, please make a hb_report. If it's too big, post it somewhere of open a bugzilla. > Anyway - I am searching with this question a "double bottom", > means a second check, if the filesystems still mounted on the > other node. I wrote a script for this, but where should I start > it? Is there any "precheck" for a resource where I can start a > custom script? A precheck for the resource "filesystem"? You shouldn't really need this if the cluster is properly configured with stonith. If your filesystems are in a VG, you can also use clvmd. Thanks, Dejan > Alternative solutions are welcome. So I set the meta attribute > multiple-active "stop_only" for all filesystem mounts, but it > doesn't work in that situation. > > Thanks > ______________________________________________________ > GRATIS für alle WEB.DE-Nutzer: Die maxdome Movie-FLAT! > Jetzt freischalten unter http://movieflat.web.de > > > _______________________________________________ > Pacemaker mailing list > [email protected] > http://oss.clusterlabs.org/mailman/listinfo/pacemaker _______________________________________________ Pacemaker mailing list [email protected] http://oss.clusterlabs.org/mailman/listinfo/pacemaker
