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Bug 860848

Summary: mirror to thinpool conversion attempt passes when it should fail if it's not supported
Product: Red Hat Enterprise Linux 6 Reporter: Corey Marthaler <cmarthal>
Component: lvm2Assignee: LVM and device-mapper development team <lvm-team>
Status: CLOSED DUPLICATE QA Contact: Cluster QE <mspqa-list>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.3CC: agk, dwysocha, heinzm, jbrassow, msnitzer, prajnoha, prockai, thornber, zkabelac
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: 2012-10-11 15:19:09 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 2012-09-26 21:01:57 UTC 
Description of problem:
This is basically bug 858874, but with a mirror volume being converted instead of a linear volume. I'm not even sure if this is or is not supported, but bug 855171 appears to imply that it's not.


[root@taft-04 ~]# lvcreate -m 1 -n mirror -L 100M TEST
  Logical volume "mirror" created

[root@taft-04 ~]# lvs -a -o +devices
  LV                VG   Attr     LSize   Log         Copy%  Devices
  mirror            TEST mwi-a-m- 100.00m mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0)
  [mirror_mimage_0] TEST iwi-aom- 100.00m                    /dev/sde1(0)
  [mirror_mimage_1] TEST iwi-aom- 100.00m                    /dev/sdf1(0)
  [mirror_mlog]     TEST lwi-aom-   4.00m                    /dev/sdg1(0)

[root@taft-04 ~]# lvconvert --thinpool TEST/mirror
[root@taft-04 ~]# echo $?
0

[root@taft-04 ~]# lvs -a -o +devices
  LV                VG   Attr     LSize   Log         Copy%  Devices
  mirror            TEST mwi-a-m- 100.00m mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0)
  [mirror_mimage_0] TEST iwi-aom- 100.00m                    /dev/sde1(0)
  [mirror_mimage_1] TEST iwi-aom- 100.00m                    /dev/sdf1(0)
  [mirror_mlog]     TEST lwi-aom-   4.00m                    /dev/sdg1(0)

[root@taft-04 ~]# lvcreate --virtualsize 1G --thinpool TEST/mirror -n origin
  Logical volume mirror is not a thin pool.


Version-Release number of selected component (if applicable):
2.6.32-279.el6.x86_64

lvm2-2.02.97-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
lvm2-libs-2.02.97-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
lvm2-cluster-2.02.97-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
udev-147-2.41.el6    BUILT: Thu Mar  1 13:01:08 CST 2012
device-mapper-1.02.76-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
device-mapper-libs-1.02.76-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
device-mapper-event-1.02.76-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
device-mapper-event-libs-1.02.76-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
cmirror-2.02.97-3.el6    BUILT: Tue Sep 11 05:06:56 CDT 2012
Comment 1 Zdenek Kabelac 2012-10-11 15:19:09 UTC 

*** This bug has been marked as a duplicate of bug 858874 ***