Bug 209320

Summary:	attempt to lock already locked VG hangs with gulm
Product:	Red Hat Enterprise Linux 4	Reporter:	Nate Straz <nstraz>
Component:	lvm2	Assignee:	Christine Caulfield <ccaulfie>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.4	CC:	agk, cfeist, dwysocha, mbroz
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	RHBA-2007-0287	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-05-08 00:10:05 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 Nate Straz 2006-10-04 16:11:34 UTC

Description of problem:

In a cluster using GuLM, when a second node attempts to exclusively activate a
volume group, the command hangs instead of fails.

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

lvm2-2.02.06-6.0.RHEL4
lvm2-cluster-2.02.06-7.0.RHEL4

How reproducible:
100%

Steps to Reproduce:
1. configure GuLM cluster
2. start clvmd
3. on node A, vgchange -aey <vgname>
4. on node B, vgchange -aey <vgname>
  
Actual results:

The vgchange command on the second node hangs and cannot be interrupted.

Expected results:

The vgchange command on the second node should return an error.

Additional info:

Comment 1 Christine Caulfield 2006-12-11 14:01:36 UTC

clvmd was looking for LCK_NONBLOCK as the flag for a non-blocking lock, whereas
it has been translated into the (DLM-specific) LKF_NOQUEUE flag by that time.

Checking in daemons/clvmd/clvmd-command.c;
/cvs/lvm2/LVM2/daemons/clvmd/clvmd-command.c,v  <--  clvmd-command.c
new revision: 1.14; previous revision: 1.13
done
Checking in daemons/clvmd/clvmd-gulm.c;
/cvs/lvm2/LVM2/daemons/clvmd/clvmd-gulm.c,v  <--  clvmd-gulm.c
new revision: 1.20; previous revision: 1.19
done
Checking in daemons/clvmd/clvmd-gulm.h;
/cvs/lvm2/LVM2/daemons/clvmd/clvmd-gulm.h,v  <--  clvmd-gulm.h
new revision: 1.3; previous revision: 1.2
done
Checking in lib/locking/locking.h;
/cvs/lvm2/LVM2/lib/locking/locking.h,v  <--  locking.h
new revision: 1.29; previous revision: 1.28
done

Comment 3 Christine Caulfield 2006-12-11 14:49:19 UTC

Set to POST rather than MODIFIED...

Comment 4 Alasdair Kergon 2006-12-17 18:49:33 UTC

lvm2-cluster-2.02.17-1

Comment 5 Corey Marthaler 2006-12-19 19:58:55 UTC

fix verified in lvm2-cluster-2.02.17-1.

Comment 9 Red Hat Bugzilla 2007-05-08 00:10:05 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-2007-0287.html