On 4/2/2011 at 09:42 PM, Ron Kerry <rke...@sgi.com> wrote: > On 7/22/64 2:59 PM, Serge Dubrouski wrote: > > On Fri, Apr 1, 2011 at 2:09 PM, Ron Kerry <rke...@sgi.com> wrote: > > > On 7/22/64 2:59 PM, Pavel Levshin wrote: > > >> > > >> 01.04.2011 18:36, Ron Kerry: > > >> > Folks - > > >> > > > >> > Consider a running cluster with all resources managed. We want to > > stop > > >> > and quickly restart a particular resource without impacting other > > >> > resources. The software stack running on the system can deal with > > this > > >> > sort of temporary outage. We perform the following actions: > > >> > * unmanage the resource > > >> > * stop the resource > > >> > * start the resource > > >> > * manage the resource > > >> > > > >> > The above procedure is sometimes successful. However, we will also > > >> > sometimes get a resource monitor failure after stopping the resource. > > >> > It is clear that the monitor operation was not stopped (at least not > > >> > immediately) by unmanaging the resource. > > >> > > >> Unmanaged resource cannot be started and stopped, but can still be > > >> monitored. > > > > > > So unmanaged really means the resource is still being managed to some > > > degree? > > > > It means that Pacemaker still wants to know its state. What kind of > > problem does it create? > > > > An unmanaged resource whoose monitor is still running will cause a monitor > failure when the resource > is stopped. Pacemaker then takes the 'onfail' action defined for the monitor > operation. In other > words, the resource is still being managed to some degree. If the monitor > operation was still > running but no action was taken as a result of the monitor operation > outcome, there would be no issue.
Try "crm configure property maintenance-mode=true". Admittedly this affects the entire cluster, but it will ensure no starts, stops or monitors... Regards, Tim -- Tim Serong <tser...@novell.com> Senior Clustering Engineer, OPS Engineering, Novell Inc. _______________________________________________ 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://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
