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Bug 1211645

Summary:	Extend lvmconf script to configure lvm.conf for HA LVM use and add possibility to also set SysV services accordingly
Product:	Red Hat Enterprise Linux 6	Reporter:	Peter Rajnoha <prajnoha>
Component:	lvm2	Assignee:	Peter Rajnoha <prajnoha>
lvm2 sub component:	Scripts / lvmdump / vgimportclone (RHEL6)	QA Contact:	cluster-qe <cluster-qe>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	low
Priority:	medium	CC:	agk, cluster-qe, fdanapfe, heinzm, jbrassow, msnitzer, nperic, prajnoha, prockai, zkabelac
Version:	6.7
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	lvm2-2.02.118-2.el6	Doc Type:	Enhancement
Doc Text:	New options added to lvmconf script The lvmconf script now provides --enable-halvm and --disable-halvm options to set proper configuration in the etc/lvm/lvm.conf configuration file that is suitable for an HA-LVM environment. In addition, the lvmconf script now also provides --service, --mirrorservice, and --startstopservices options to enable or disable related SysV init services needed for LVM to work correctly in a clustered environment. For information on the lvmconf script, see the lvmconf(8) man page.	Story Points:	---
Clone Of:	1211507
Clones:	1223093 (view as bug list)		Environment:
Last Closed:	2015-07-22 07:38:36 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:
Bug Depends On:	1211507, 1223090
Bug Blocks:	1223093

Description Peter Rajnoha 2015-04-14 13:43:05 UTC

(Opening report to track this change properly for RHEL6 update, started originally in bug #1208523 and bug #1211507 comment #3)

lvmconf is just a helper script and new patches are adding new helper hooks to set HA LVM properly, not changing existing functionality - we may still squeeze this into 6.7 as users may benefit from easier configuration.

Just like we have lvmconf --enable-cluster which makes sure that locking_type=3 and use_lvmetad=0 is set in lvm.conf, add --enable-halvm to make sure that locking_type=1 and use_lvmetad=0 is set in lvm.conf.

Also, to remove burden from users, make it easier for them so they can also set proper state for services when switching to/from cluster/halvm.

The lvmconf script is now patched upstream and it provides these changes:

  --> new "--enable-halvm" (sets locking_type=1 and use_lvmetad=0)
  --> new "--disable-halvm" option (go backward - sets default locking type, which is locking_type=1 and default use_lvmetad which in case of RHEL6 is 0)
  --> new "--services" option to handle Systemd/SysV services according to changes done in LVM configuration (in case of RHEL6, this encompasses lvm2-lvmetad, clvmd and cmirrord SysV services), this option causes the services to be enabled or disabled accordingly
  --> new "--mirrorservice" option to handle cmirrord service in addition
  --> new "--startstopservices" option to also start or stop services according to lvm.conf changes immediately

Patches:

https://git.fedorahosted.org/cgit/lvm2.git/commit/?id=f814d763c60f795dd7616b57fbcd55f1761fcc3c

https://git.fedorahosted.org/cgit/lvm2.git/commit/?id=695237f2ae2f2c34f8abc30b6c03467a06c28945

https://git.fedorahosted.org/cgit/lvm2.git/commit/?id=d5651f44e3056c0e0e5f0c3d05c29c575782379e

Comment 4 Nenad Peric 2015-04-21 07:58:07 UTC

Marking this particular bug as VERIFIED with:

lvm2-2.02.118-2.el6.x86_64


Additionally, a new bug has been opened (Bug 1213735) which deals with the more detailed command line options processing, and setting up of a locking_type properly in certain cases.

Comment 8 errata-xmlrpc 2015-07-22 07:38:36 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.

https://rhn.redhat.com/errata/RHBA-2015-1411.html