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Bug 462354

Summary: dlm: add old plock interface
Product: Red Hat Enterprise Linux 5 Reporter: David Teigland <teigland>
Component: kernelAssignee: David Teigland <teigland>
Status: CLOSED ERRATA QA Contact: Cluster QE <mspqa-list>
Severity: medium Docs Contact:
Priority: medium    
Version: 5.3CC: bstevens, ccaulfie, edamato, lhh, nstraz, syeghiay
Target Milestone: rcKeywords: ReleaseNotes
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
A change was introduced in the RHEL 5.3 DLM kernel code to improve the interface and performance of the supporting DLM plock component. This change introduces and incompatibility with the 5.2 cluster userspace components contained in the cman package. In order to run the 5.3 beta kernel in a cluster environment, the user must update the cman package to 5.3 beta. This will be resolved in the 5.3 GA release.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2009-01-20 20:19:51 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 462892, 468538    
Attachments:
Description Flags
proposed patch none

Description David Teigland 2008-09-15 16:31:29 UTC 
Description of problem:

gfs_controld in RHEL5.2 and earlier does not work with the gfs/dlm
plock code in RHEL5.3 (although the new gfs_controld in 5.3 is
backward compatible with earlier gfs/dlm.)  This is caused by moving
the plock code from gfs2 into dlm in bug 450138.

We can add a patch to make the gfs/dlm plock code in 5.3 compatible
with the earlier versions of gfs_controld.  The patch would require
a new dlm symbol added to the kabi whitelist.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:
Comment 1 David Teigland 2008-09-15 16:36:54 UTC 
Created attachment 316760 [details]
proposed patch

The patch was scratch built here,
https://brewweb.devel.redhat.com/taskinfo?taskID=1469908

and tested with old and new versions of gfs_controld.
Comment 2 Kiersten (Kerri) Anderson 2008-09-15 19:46:24 UTC 
Release note added. If any revisions are required, please set the 
"requires_release_notes" flag to "?" and edit the "Release Notes" field accordingly.
All revisions will be proofread by the Engineering Content Services team.

New Contents:
A change was introduced in the RHEL 5.3 DLM kernel code to improve the interface and performance of the supporting DLM plock component.  This change introduces and incompatibility with the 5.2 cluster userspace components contained in the cman package.  In order to run the 5.3 beta kernel in a cluster environment, the user must update the cman package to 5.3 beta.  This will be resolved in the 5.3 GA release.
Comment 5 David Teigland 2008-09-19 14:41:02 UTC 
posted to rhkernel
http://post-office.corp.redhat.com/archives/rhkernel-list/2008-September/msg00981.html
Comment 6 Don Zickus 2008-10-20 15:12:57 UTC 
in kernel-2.6.18-120.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5
Comment 8 Nate Straz 2008-11-13 20:09:52 UTC 
Verified plocks work on a RHEL 5.3 node which has joined a RHEL 5.3 cluster using tree RHEL5.3-Server-20081105.1.
Comment 10 errata-xmlrpc 2009-01-20 20:19:51 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 therefore 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/RHSA-2009-0225.html