Bug 1126635

Summary:	allow a user to force lvm to place mirror/raid images on the devices they want
Product:	Red Hat Enterprise Linux 6	Reporter:	Corey Marthaler <cmarthal>
Component:	lvm2	Assignee:	LVM and device-mapper development team <lvm-team>
lvm2 sub component:	Mirroring and RAID (RHEL6)	QA Contact:	cluster-qe <cluster-qe>
Status:	CLOSED WONTFIX	Docs Contact:
Severity:	medium
Priority:	unspecified	CC:	agk, heinzm, jbrassow, msnitzer, prajnoha, prockai, zkabelac
Version:	6.6
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-10-15 15:37:40 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 2014-08-04 22:57:46 UTC

Description of problem:
There are many hacks I've learned over the past years to "trick" lvm into placing the mirror/raid images on the device(s) that I want them on. Now I appear to have found a case where I can't think of a way to make it work and thought maybe it's time to no longer need hacks and just have a sane way to say "I want image_0 on this/these device(s), and image_1 on that/those device(s)..."



Version-Release number of selected component (if applicable):
2.6.32-494.el6.x86_64

lvm2-2.02.108-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014
lvm2-libs-2.02.108-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014
lvm2-cluster-2.02.108-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014
udev-147-2.57.el6    BUILT: Thu Jul 24 08:48:47 CDT 2014
device-mapper-1.02.87-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014
device-mapper-libs-1.02.87-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014
device-mapper-event-1.02.87-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014
device-mapper-event-libs-1.02.87-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014
device-mapper-persistent-data-0.3.2-1.el6    BUILT: Fri Apr  4 08:43:06 CDT 2014
cmirror-2.02.108-1.el6    BUILT: Thu Jul 24 10:29:50 CDT 2014

Comment 2 Jonathan Earl Brassow 2014-08-27 04:39:19 UTC

That would be a nice-to-have.  It may involve creating image LVs and then converting them to RAID or some other like solution.  This surely won't make it in near-term planning though.