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Description of problem:
Under some circumsatances it can happen that two resources end up running on the same node even though a "anti-colocation" rule (colocation rule with score INFINITY) was set up that should prevent this.

Version-Release number of selected component (if applicable):
pacemaker-1.1.10-14.el6_5.1

How reproducible:
sometimes

Steps to Reproduce:
1. configure two resources that should always run on different nodes
2. set up colocation rule with score INFINITY to prevent the two resources from running on the same node  
3.

Actual results:
under some circumstances both resources end up running on the same node

Expected results:
under no circumstances resources should be running on the same node

Additional info:
I've not discovered this issue myself, but was informed by a colleague from SUSE about it.

A fix for this is available in the following upstream commit:
https://github.com/ClusterLabs/pacemaker/commit/9f9ed87e01bfafec0ddeee6592eb07e81bef963e

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2014-1544.html