On Mon, Mar 12, 2012 at 4:31 PM, Junko IKEDA <tsukishima...@gmail.com> wrote: > Hi, > > I tried the latest code and the following commit worked well for our case, > too. > It means "unmanaged, stop failed resource" prevents Pacemaker's > shutdown, great :) > https://github.com/ClusterLabs/pacemaker/commit/8d2f237dc5f900381adf62a6e949ec71d1ee54e5 > > but, I got the other case, it's "Master/Slave" configuration. > > 1) initial status; > node-a = Master > node-b = Slave > > 2) node-a -> shutdown Pacemaker > 3) node-a -> failed to stop Master while the shutdown process > > 4) final status; > node-a = unmanaged "Slave" > node-b = Master > > In this case, "demote" operation goes well, so it makes sense to > promote node-b as Master.
Is it though? In the general case. With one instance mis-behaving, in an unknown state and potentially doing anything, I would not have thought this would be a good time to promote another instance. In any case, the 'block' applies to the whole resource, not just the failed instance. Even if I wanted to, I don't think we could change the behaviour in this case. All instances that need to be demoted or stopped must be, before any other instances can be started or promoted. Bypassing that premise would probably cause the implementation to fall apart :-) > I think drbd RA can handle this situation, > but pgsql RA (replication mode) will go into the unexpected dual master... > this can be related to the following issue. > http://www.gossamer-threads.com/lists/linuxha/pacemaker/78644 > I'll ask pgsql people this again for now. > > Many thanks, > Junko > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
