On Jun 7, 2010, at 5:05 AM, Dejan Muhamedagic wrote: > Hi, > > On Sat, Jun 05, 2010 at 10:38:17AM -0400, Vadym Chepkov wrote: >> >> On Jun 3, 2010, at 9:16 AM, Vadym Chepkov wrote: >> >>> Hi, >>> >>> Not sure what I am doing wrong >>> >>> primitive dummy1 ocf:pacemaker:Dummy >>> primitive dummy2 ocf:pacemaker:Dummy >>> primitive dummy3 ocf:pacemaker:Dummy >>> >>> only two nodes alive in 3 node cluster, so I can see two dummy resources >>> started on one node: >>> >>> dummy2 (ocf::pacemaker:Dummy): Started c20 >>> dummy1 (ocf::pacemaker:Dummy): Started c20 >>> dummy3 (ocf::pacemaker:Dummy): Started c22 >>> >>> Now I want to have only one resource running on one node at any given time, >>> so I created a constraint: >>> >>> # crm configure show one-dummy >>> colocation one-dummy -inf: ( dummy1 dummy2 dummy3 ) >>> >>> # cibadmin -Q -o constraints >>> <constraints> >>> <rsc_colocation id="one-dummy" score="-INFINITY"> >>> <resource_set id="one-dummy-0" sequential="false"> >>> <resource_ref id="dummy1"/> >>> <resource_ref id="dummy2"/> >>> <resource_ref id="dummy3"/> >>> </resource_set> >>> </rsc_colocation> >>> </constraints> >>> >>> I would expect one of the dummies to be down at this point. But it is not. >>> Maybe pacemaker can't decide which one, I thought, so I set a priority: >>> >>> # crm resource dummy1 meta priority="10" >>> >>> Still no dice. >>> >>> pacemaker-1.0.8-6.1.el5 >>> >>> What am I missing? >> >> >> I am sorry for being impatient, but it's a really critical bug (or lack of >> knowledge) for me :( >> I can't prevent two resources to run on the same host for some reasons. I >> thought, ok, >> I recall "groups" had some issues, so I completely stopped using that syntax >> >> But I do have proper constraints, I believe, and resources are still got >> started on the same host :( >> >> # crm configure show|grep only >> colocation only-one-sql -inf: _rsc_set_ ( fs_node00_sql fs_node01_sql ) > > If you convert this to a normal two-resource constrain does that > work? If so, then this seems to be a problem with resource sets > and you should file a bugzilla. If there are not too many > resources, you can use a chain of two-resource constraints.
Chains can't be used, if fs_node01_sql won't be available then fs_node00_sql won't be available too :( I filed bug 2435, glad to hear "it's not me" By the way, inf: is also broken in resource set and something trivial as this also doesn't work: node c19.chepkov.lan node c20.chepkov.lan node c21.chepkov.lan primitive dummy1 ocf:pacemaker:Dummy primitive dummy2 ocf:pacemaker:Dummy primitive dummy3 ocf:pacemaker:Dummy primitive dummy4 ocf:pacemaker:Dummy colocation just-do-it inf: dummy4 ( dummy1 dummy2 dummy3 ) dummy1 (ocf::pacemaker:Dummy): Started c19.chepkov.lan dummy2 (ocf::pacemaker:Dummy): Started c19.chepkov.lan dummy3 (ocf::pacemaker:Dummy): Started c21.chepkov.lan dummy4 (ocf::pacemaker:Dummy): Stopped dummy4 have never had a chance :( Vadym > > Thanks, > > Dejan > > >> # cibadmin -Q -o constraints >> <rsc_colocation id="only-one-sql" score="-INFINITY"> >> <resource_set id="only-one-sql-0" sequential="false"> >> <resource_ref id="fs_node00_sql"/> >> <resource_ref id="fs_node01_sql"/> >> </resource_set> >> </rsc_colocation> >> >> # crm_mon -1rf|grep sql >> fs_node00_sql (ocf::heartbeat:Filesystem): Started c21 >> fs_node01_sql (ocf::heartbeat:Filesystem): Started c21 >> pgsql_node00 (ocf::heartbeat:pgsql): Stopped >> pgsql_node01 (ocf::heartbeat:pgsql): Started c21 >> pgsql_node00: migration-threshold=1000000 fail-count=14 last-failure='Sat >> Jun 5 14:19:24 2010' >> >> [r...@c21 ~]# df -k >> Filesystem 1K-blocks Used Available Use% Mounted on >> >> /dev/mapper/node01-sql >> 2031952 69740 1858996 4% /node01/sql >> /dev/mapper/node00-sql >> 2031952 87016 1841720 5% /node00/sql >> _______________________________________________ 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