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Bug 1114078

Summary:	need a more graceful error when attempting to cache an origin that is already cached
Product:	Red Hat Enterprise Linux 6	Reporter:	Corey Marthaler <cmarthal>
Component:	lvm2	Assignee:	Zdenek Kabelac <zkabelac>
lvm2 sub component:	Cache Logical Volumes (RHEL6)	QA Contact:	Cluster QE <mspqa-list>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	medium
Priority:	unspecified	CC:	agk, heinzm, jbrassow, mcsontos, msnitzer, prajnoha, zkabelac
Version:	6.6
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	lvm2-2.02.111-1.el6	Doc Type:	Bug Fix
Doc Text:	No text required - just error message improvement.	Story Points:	---
Clone Of:	1109974	Environment:
Last Closed:	2014-10-14 08:25:21 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:	1109974
Bug Blocks:

Comment 1 Corey Marthaler 2014-06-27 16:23:09 UTC

[root@host-001 ~]# lvs -a -o +devices
  LV                     Attr       LSize   Pool   Origin        Devices
  already_cached         Cwi-a-C---   4.00g pool_1 [already_cached_corig] already_cached_corig(0)
  [already_cached_corig] -wi-ao----   4.00g                      /dev/sde1(0)
  [lvol0_pmspare]        ewi-------   8.00m                      /dev/sda1(0)
  pool_1                 Cwi---C---   2.00g                      pool_1_cdata(0)
  [pool_1_cdata]         Cwi-aoC---   2.00g                      /dev/sdc1(0)
  [pool_1_cmeta]         ewi-aoC---   8.00m                      /dev/sdc1(512)
  pool_2                 Cwi---C---   2.00g                      pool_2_cdata(0)
  [pool_2_cdata]         Cwi---C---   2.00g                      /dev/sdc1(514)
  [pool_2_cmeta]         ewi---C---   8.00m                      /dev/sdc1(1026)

[root@host-001 ~]# lvconvert --type cache --cachepool cache_sanity/pool_2 cache_sanity/already_cached
  Internal error: The origin, already_cached, cannot be of cache type


2.6.32-485.el6.x86_64
lvm2-2.02.107-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014
lvm2-libs-2.02.107-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014
lvm2-cluster-2.02.107-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014
udev-147-2.55.el6    BUILT: Wed Jun 18 06:30:21 CDT 2014
device-mapper-1.02.86-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014
device-mapper-libs-1.02.86-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014
device-mapper-event-1.02.86-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014
device-mapper-event-libs-1.02.86-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014
device-mapper-persistent-data-0.3.2-1.el6    BUILT: Fri Apr  4 08:43:06 CDT 2014
cmirror-2.02.107-1.el6    BUILT: Mon Jun 23 09:44:45 CDT 2014

Comment 2 Jonathan Earl Brassow 2014-08-27 12:32:38 UTC

patch committed upstream:

commit 8b9eb95ea9d2a950286f622f6d2d571c76642654
Author: Jonathan Brassow <jbrassow>
Date:   Sun Aug 24 19:44:37 2014 -0500

    cache: Clean-up error message.
    
    It is not an internal error message to report to the user that they
    cannot create a cache LV on top of a cache LV.  It is simply not
    supported yet.

Comment 3 Marian Csontos 2014-08-27 13:18:47 UTC

with lvm2-2.02.110-0.41.el6.x86_64 I get meaningful:

+ lvconvert --yes --type cache --cachepool cache_sanity/pool_2 cache_sanity/already_cached
  Can't cache pool or cache type volume cache_sanity/already_cached.
++ ERR
++ echo ERROR: 5
ERROR: 5
++ exit 1

Comment 4 Peter Rajnoha 2014-08-27 13:26:10 UTC

(In reply to Marian Csontos from comment #3)
> with lvm2-2.02.110-0.41.el6.x86_64 I get meaningful:
> 

...this is nightly build, not the actual build in RHEL 6.6 - Jon's patch is not yet in! I'll include that in next rebuild.

Comment 6 Corey Marthaler 2014-09-03 20:43:42 UTC

Fixed verified in the latest rpms.

2.6.32-495.el6.x86_64
lvm2-2.02.111-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014
lvm2-libs-2.02.111-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014
lvm2-cluster-2.02.111-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014
udev-147-2.57.el6    BUILT: Thu Jul 24 08:48:47 CDT 2014
device-mapper-1.02.90-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014
device-mapper-libs-1.02.90-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014
device-mapper-event-1.02.90-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014
device-mapper-event-libs-1.02.90-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014
device-mapper-persistent-data-0.3.2-1.el6    BUILT: Fri Apr  4 08:43:06 CDT 2014
cmirror-2.02.111-2.el6    BUILT: Mon Sep  1 06:46:43 CDT 2014


Old version:
lvconvert --yes --type cache --cachepool cache_sanity/pool_2 cache_sanity/already_cached
  Internal error: The origin, already_cached, cannot be of cache type

New version:
lvconvert --yes --type cache --cachepool cache_sanity/pool_2 cache_sanity/already_cached
  Can't cache pool or cache type volume cache_sanity/already_cached.

Comment 7 errata-xmlrpc 2014-10-14 08:25:21 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-2014-1387.html