Bug 450169

Summary:	gfs_controld should read plocks from either dlm or lock_dlm
Product:	Red Hat Enterprise Linux 5	Reporter:	David Teigland <teigland>
Component:	cman	Assignee:	David Teigland <teigland>
Status:	CLOSED ERRATA	QA Contact:	Cluster QE <mspqa-list>
Severity:	low	Docs Contact:
Priority:	low
Version:	5.2	CC:	cluster-maint, edamato
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-01-20 21:53:10 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:

Description David Teigland 2008-06-05 17:12:32 UTC

Description of problem:

For bug 450138, the kernel plock code was moved from gfs2 into the dlm.
gfs_controld needs to be adapted to this change, and read plocks from
either lock_dlm (kernels before 5.3), or dlm (kernels 5.3 and later).

The misc device gfs_controld reads/writes has previously been called
"lock_dlm_plock", but the patch for bug 450138 changes the name of
the device to "dlm_plock".  gfs_controld looks for "dlm_plock", and
if it's not found, looks for "lock_dlm_plock".  If "lock_dlm_plock"
is found, it knows that the filesystem/lockspace id in the plock
structures needs to be translated.  Otherwise, the operation of
plocks remains the same.

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


How reproducible:


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Additional info:

Comment 1 David Teigland 2008-06-05 19:33:14 UTC

I'm waiting to push this change to the RHEL5 branch until the patch
for bug 450138 has been included in the RHEL5 kernel.  That patch
includes a new kernel header, dlm_plock.h, that is required for
building the modified gfs_controld.

Comment 2 RHEL Program Management 2008-06-05 19:34:16 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 2009-01-20 21:53:10 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/RHBA-2009-0189.html