Bug 822248

Summary:	VG containing raid volume should not be allowed to be converted to a clustered VG
Product:	Red Hat Enterprise Linux 6	Reporter:	Corey Marthaler <cmarthal>
Component:	lvm2	Assignee:	Jonathan Earl Brassow <jbrassow>
Status:	CLOSED ERRATA	QA Contact:	Cluster QE <mspqa-list>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.4	CC:	agk, dwysocha, heinzm, jbrassow, msnitzer, nperic, prajnoha, prockai, thornber, zkabelac
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	lvm2-2.02.98-1.el6	Doc Type:	Bug Fix
Doc Text:	RAID logical volumes can become corrupted if they are activated in a clustered volume group. Thus, if there are RAID logical volumes in a volume group, that volume group is no longer allowed to be changed to a clustered volume group.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-02-21 08:10:00 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 Corey Marthaler 2012-05-16 19:49:53 UTC

Description of problem:
[root@hayes-01 ~]# pvscan
  PV /dev/etherd/e1.1p1   lvm2 [4.43 TiB]
  PV /dev/etherd/e1.1p2   lvm2 [4.43 TiB]

[root@hayes-01 ~]# vgcreate test /dev/etherd/e1.1p*
  Clustered volume group "test" successfully created

[root@hayes-01 ~]# vgchange -cn test
  Volume group "test" successfully changed

[root@hayes-01 ~]# lvcreate --type raid1 -m 1 -n raid -L 100M test
  Logical volume "raid" created

[root@hayes-01 ~]# vgchange -cy test
  RAID logical volumes must be inactive when changing the cluster attribute.

[root@hayes-01 ~]# vgchange -an test
  0 logical volume(s) in volume group "test" now active

[root@hayes-01 ~]# vgchange -cy test
  Volume group "test" successfully changed

[root@hayes-01 ~]# vgchange -ay test
  1 logical volume(s) in volume group "test" now active

Version-Release number of selected component (if applicable):
2.6.32-269.el6.x86_64
lvm2-2.02.95-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012
lvm2-libs-2.02.95-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012
lvm2-cluster-2.02.95-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012
udev-147-2.41.el6    BUILT: Thu Mar  1 13:01:08 CST 2012
device-mapper-1.02.74-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012
device-mapper-libs-1.02.74-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012
device-mapper-event-1.02.74-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012
device-mapper-event-libs-1.02.74-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012
cmirror-2.02.95-9.el6    BUILT: Wed May 16 10:34:14 CDT 2012

Comment 3 Jonathan Earl Brassow 2012-10-03 20:49:34 UTC

Unit test (VG cannot change to cluster when there is an active or inactive RAID LV present):

[root@hayes-02 lvm2]# lvcreate --type raid1 -L 100M -n lv vg 
  Logical volume "lv" created

[root@hayes-02 lvm2]# vgchange -cy vg
  RAID logical volumes are not allowed in a cluster volume group.

[root@hayes-02 lvm2]# vgs
  VG         #PV #LV #SN Attr   VSize  VFree
  vg           8   1   0 wz--n-  5.07t 5.07t
  vg_hayes02   1   3   0 wz--n- 74.01g    0 

[root@hayes-02 lvm2]# vgchange -an vg
  0 logical volume(s) in volume group "vg" now active

[root@hayes-02 lvm2]# vgchange -cy vg
  RAID logical volumes are not allowed in a cluster volume group.

[root@hayes-02 lvm2]# vgs
  VG         #PV #LV #SN Attr   VSize  VFree
  vg           8   1   0 wz--n-  5.07t 5.07t
  vg_hayes02   1   3   0 wz--n- 74.01g    0

Comment 4 Jonathan Earl Brassow 2012-10-03 20:57:48 UTC

commit 9efd3fb604ae34803bb2d4c94080c57d3efdba81
Author: Jonathan Brassow <jbrassow>
Date:   Wed Oct 3 15:52:54 2012 -0500

    RAID:  Do not allow RAID LVs in a cluster volume group.
    
    It would be possible to activate a RAID LV exclusively in a cluster
    volume group, but for now we do not allow RAID LVs to exist in a
    clustered volume group at all.  This has two components:
        1) Do not allow RAID LVs to be created in a clustered VG
        2) Do not allow changing a VG from single-machine to clustered
           if there are RAID LVs present.

Comment 6 Nenad Peric 2012-10-30 09:01:10 UTC

Verified normal behavior with:

lvm2-2.02.98-2.el6.x86_64

Comment 7 errata-xmlrpc 2013-02-21 08:10:00 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-0501.html