Bug 438085 - qdisk master abdication does not work correctly in all cases
Summary: qdisk master abdication does not work correctly in all cases
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Cluster Suite
Classification: Retired
Component: cman
Version: 4
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Christine Caulfield
QA Contact: Cluster QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-03-18 22:05 UTC by Lon Hohberger
Modified: 2009-04-16 20:32 UTC (History)
2 users (show)

Fixed In Version: RHBA-2008-0799
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-07-25 19:07:06 UTC
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2008:0799 0 normal SHIPPED_LIVE cman bug fix and enhancement update 2008-07-25 19:06:54 UTC

Description Lon Hohberger 2008-03-18 22:05:18 UTC
+++ This bug was initially created as a clone of Bug #430264 +++

Description of problem:

When qdiskd detects multiple masters, all detecting qdiskd instances are
supposed to abdicate their position and elect a new master.  Unfortunately, a
logic error prevents this from occurring in all cases.  For example, if qdiskd
goes to sleep, is evicted, and still thinks it is master, it will complain:

"A master exists, but it's not me?!"

Steps to Reproduce: Unknown; seen in overnight testing
  
Actual results:  Loop with annoying messages

Expected results: Master abdication + re-election

-- Additional comment from lhh on 2008-01-25 11:45 EST --
Created an attachment (id=292960)
Fix


-- Additional comment from lhh on 2008-02-04 12:19 EST --
One way to cause this is to corrupt the quorum disk while qdiskd is running.

Comment 1 Lon Hohberger 2008-03-18 22:06:42 UTC
Already in git / RHEL4 branch, commit = db6a74a9900257848aa4c07256b77b2d10a7db13

Comment 2 RHEL Program Management 2008-03-18 22:14:40 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 5 errata-xmlrpc 2008-07-25 19:07:06 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2008-0799.html



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