Bug 1069284

Summary: Prevent resources in an anti-colocation from even temporarily running on a same node
Product: Red Hat Enterprise Linux 7 Reporter: Frank Danapfel <fdanapfe>
Component: pacemakerAssignee: Andrew Beekhof <abeekhof>
Status: CLOSED CURRENTRELEASE QA Contact: Cluster QE <mspqa-list>
Severity: high Docs Contact:
Priority: high    
Version: 7.0CC: cluster-maint, dvossel, fdinitto, jkortus, lmiccini
Target Milestone: rc   
Target Release: 7.0   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: pacemaker-1.1.10-25.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 1069279 Environment:
Last Closed: 2014-06-13 10:18:41 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Frank Danapfel 2014-02-24 16:19:28 UTC 
+++ This bug was initially created as a clone of Bug #1069279 +++

Description of problem:
Under some circumstances 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-1.1.10-24.el7

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
Comment 4 Ludek Smid 2014-06-13 10:18:41 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.