[Pacemaker] the behavior of resource-stickiness

[Andrew Beekhof]

2009/11/19 Junko IKEDA <ikedaj at intellilink.co.jp>:
> Hi,
>
> I am running pacemaker 1.0.6 + corosync 1.1.2.
> There are two resource and their "resource-stickiness" is "INFINITY".
> They have rsc_colocation but there is no rsc_location setting.
>
> (1) start the resources first
> # crm_mon -1
>
> ============
> Last updated: Thu Nov 19 20:35:45 2009
> Stack: openais
> Current DC: dom1 - partition with quorum
> Version: 1.0.6-f709c638237cdff7556cb6ab615f32826c0f8c06
> 3 Nodes configured, 2 expected votes
> 2 Resources configured.
> ============
>
> Online: [ dom9 dom1 dom2 ]
>
> dummy1  (ocf::heartbeat:Dummy): Started dom1
> dummy2  (ocf::heartbeat:Dummy): Started dom9
>
>
> (2) standby one node
> # crm_standby -U dom1 -v on
>
> I expected that dummy2 kept running on dom9,
> but it moved to another node.
>
> # crm_mon -1
> ============
> Last updated: Thu Nov 19 20:36:27 2009
> Stack: openais
> Current DC: dom1 - partition with quorum
> Version: 1.0.6-f709c638237cdff7556cb6ab615f32826c0f8c06
> 3 Nodes configured, 2 expected votes
> 2 Resources configured.
> ============
>
> Node dom1: standby
> Online: [ dom9 dom2 ]
>
> dummy1  (ocf::heartbeat:Dummy): Started dom9
> dummy2  (ocf::heartbeat:Dummy): Started dom2
>
>
> (2) standby "off" one node
> # crm_standby -U dom1 -v off
>
> Both dummy1 and dummy2 moved to the other node.
> It's strange because these resources' "resource-stickiness" is "INFINITY".
> Is there anything wrong in my setting?

This wont be helping:

Nov 19 20:36:50 dom1 pengine: [3180]: info: native_merge_weights:
dummy2: Breaking dependancy loop at dummy1
Nov 19 20:36:50 dom1 pengine: [3180]: info: native_merge_weights:
dummy1: Breaking dependancy loop at dummy2

You really don't want to create colocation loops, they'll cause the
cluster to behave somewhat erratically (as you're seeing).
I removed the following constraint and the resources stopped moving:
       <rsc_colocation id="location2" rsc="dummy2" with-rsc="dummy1"
score="-INFINITY"/>


> # crm_mon -1
> ============
> Last updated: Thu Nov 19 20:36:50 2009
> Stack: openais
> Current DC: dom1 - partition with quorum
> Version: 1.0.6-f709c638237cdff7556cb6ab615f32826c0f8c06
> 3 Nodes configured, 2 expected votes
> 2 Resources configured.
> ============
>
> Online: [ dom9 dom1 dom2 ]
>
> dummy1  (ocf::heartbeat:Dummy): Started dom2
> dummy2  (ocf::heartbeat:Dummy): Started dom1
>
>
>
>
> I attached the log.
>
> Thanks,
> Junko
>
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