Hi, On Mon, Mar 22, 2010 at 01:18:35PM -0700, Alan Jones wrote: > Well, I guess my configuration is not as common. > In my case, one of these resources, say resource A, suffers greater > disruption if it is moved. > So, after a failover I would prefer that resource B move, reversing the node > placement. > Is this possible to express?
Not sure, but don't think so. Thanks, Dejan > Alan > > On Mon, Mar 22, 2010 at 11:10 AM, Dejan Muhamedagic > <deja...@fastmail.fm>wrote: > > > Hi, > > > > On Mon, Mar 22, 2010 at 09:29:50AM -0700, Alan Jones wrote: > > > Friends, > > > I have what should be a simple goal. Two resources to run on two nodes. > > > I'd like to configure them to run on separate nodes when available, ie. > > > active-active, > > > and provide for them to run together on either node when one fails, ie. > > > failover. > > > Up until this point I have assumed that this would be a base use case for > > > Pacemaker, however, it seems from the discussion on: > > > http://wiki.lustre.org/index.php/Using_Pacemaker_with_Lustre > > > ... that it is not (see below). Any ideas? > > > > Why not just two location constraints (aka node preferences): > > > > location l1 rsc1 100: node1 > > location l2 rsc2 100: node2 > > > > Thanks, > > > > Dejan > > > > > Alan > > > > > > *Note:* Use care when setting up your point system. You can use the > > > point system if your cluster has at least three nodes or if the resource > > > can acquire points from other constraints. However, in a system with > > > only two nodes and no way to acquire points, the constraint in the > > > example above will result in an inability to migrate a resource from a > > > failed node. > > > > > > The example they refer to is similar to yours: > > > > > > # crm configure colocation colresOST1resOST2 -100: resOST1 resOST2 > > > > > _______________________________________________ > > > Pacemaker mailing list > > > Pacemaker@oss.clusterlabs.org > > > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > > > > > _______________________________________________ > > Pacemaker mailing list > > Pacemaker@oss.clusterlabs.org > > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > > _______________________________________________ > Pacemaker mailing list > Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker _______________________________________________ Pacemaker mailing list Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker
