On Tue, Jun 15, 2010 at 03:41:17PM -0400, Vadym Chepkov wrote: > > On Jun 15, 2010, at 3:36 PM, Dejan Muhamedagic wrote: > > > Hi, > > > > On Tue, Jun 15, 2010 at 08:45:37AM -0400, Vadym Chepkov wrote: > >> > >> On Jun 15, 2010, at 6:14 AM, Dejan Muhamedagic wrote: > >> > >>> Hi, > >>> > >>> On Tue, Jun 15, 2010 at 10:57:47AM +0200, Andrew Beekhof wrote: > >>>> On Tue, Jun 15, 2010 at 10:23 AM, Andreas Kurz <andreas.k...@linbit.com> > >>>> wrote: > >>>>> On Tuesday 15 June 2010 08:40:58 Andrew Beekhof wrote: > >>>>>> On Mon, Jun 14, 2010 at 4:22 PM, Vadym Chepkov <vchep...@gmail.com> > >>>>>> wrote: > >>>>>>> On Jun 7, 2010, at 8:04 AM, Vadym Chepkov wrote: > >>>>>>>> I filed bug 2435, glad to hear "it's not me" > >>>>>>> > >>>>>>> Andrew closed this bug > >>>>>>> (http://developerbugs.linux-foundation.org/show_bug.cgi?id=2435) as > >>>>>>> resolved, but I respectfully disagree. > >>>>>>> > >>>>>>> I will try to explain a problem again in this list. > >>>>>>> > >>>>>>> lets assume you want to have several resources running on the same > >>>>>>> node. > >>>>>>> They are independent, so if one is going down, others shouldn't be > >>>>>>> stopped. You would do this by using a resource set, like this: > >>>>>>> > >>>>>>> primitive dummy1 ocf:pacemaker:Dummy > >>>>>>> primitive dummy2 ocf:pacemaker:Dummy > >>>>>>> primitive dummy3 ocf:pacemaker:Dummy > >>>>>>> colocation together inf: ( dummy1 dummy2 dummy3 ) > >>>>>>> > >>>>>>> and I expect them to run on the same host, but they are not and I > >>>>>>> attached hb_report to the case to prove it. > >>>>>>> > >>>>>>> Andrew closed it with the comment "Thats because you have > >>>>>>> sequential="false" for the colocation set." But sequential="false" > >>>>>>> means > >>>>>>> doesn't matter what order do they start. > >>>>>> > >>>>>> No. Thats not what it means. > >>>>>> And I believe I should know. > >>>>>> > >>>>>> It means that the members of the set are NOT collocated with each > >>>>>> other, only with any preceding set. > >>>>> > >>>>> Just for clarification: > >>>>> > >>>>> colocation together inf: ( dummy1 dummy2 dummy3 ) dummy4 > >>>>> > >>>>> .... is a shortcut for: > >>>>> > >>>>> colocation together1 inf: dummy4 dummy1 > >>>>> colocation together1 inf: dummy4 dummy2 > >>>>> colocation together1 inf: dummy4 dummy3 > >>>>> > >>>>> ... is that correct? > >>>> > >>>> Only if sequential != false. > >>> > >>> You wanted to say "sequential == false"? > >>> > >>>> For some reason the shell appears to be setting that by default. > >>> > >>> This is sequential == false: > >>> > >>> colocation together inf: ( dummy1 dummy2 dummy3 ) dummy4 > >>> > >>> This is sequential == true: > >>> > >>> colocation together inf: dummy1 dummy2 dummy3 dummy4 > >>> > >>> Thanks, > >>> > >>> Dejan > >> > >> > >> I guess colocation syntax needs to be expanded to allow something like this > >> > >> colocation only-one -inf: (dummy1 dummy2 sequential="true") > >> > >> colocation together 5000: (dummy1 dummy2 sequential="true") > > > > How's this different from a regular constraint? > > > > > Because it does not create a resource set with two resources > and if you put it in parentheses, it creates set with sequential="false"
What I meant was what is the difference between these two: <rsc_colocation id="c1" rsc="p1" score="500" with-rsc="p2"/> <rsc_colocation id="c1" score="500"> <resource_set id="c1-0"> <resource_ref id="p1"/> <resource_ref id="p2"/> </resource_set> </rsc_colocation> Thanks, Dejan > Vadym > > > > _______________________________________________ > 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 _______________________________________________ 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