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Bug 1373628

Summary: mirror and raid1 segtypes should behave the same when down-converting w/ a specified not-in-use PV
Product: Red Hat Enterprise Linux 7 Reporter: Corey Marthaler <cmarthal>
Component: lvm2Assignee: Heinz Mauelshagen <heinzm>
lvm2 sub component: Mirroring and RAID QA Contact: cluster-qe <cluster-qe>
Status: CLOSED WONTFIX Docs Contact:
Severity: low    
Priority: unspecified CC: agk, heinzm, jbrassow, msnitzer, prajnoha, prockai, zkabelac
Version: 7.3   
Target Milestone: rc   
Target Release: 7.7   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-10-24 12:39:14 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 2016-09-06 19:12:06 UTC 
Description of problem:


# RAID
[root@host-123 ~]# lvcreate -m 1 --type raid1 -L 100M test
  Logical volume "lvol0" created.
[root@host-123 ~]# lvs -a -o +devices
  LV               VG    Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Devices                            
  lvol0            test  rwi-a-r--- 100.00m                                    100.00   lvol0_rimage_0(0),lvol0_rimage_1(0)
  [lvol0_rimage_0] test  iwi-aor--- 100.00m                                             /dev/sda1(1)                       
  [lvol0_rimage_1] test  iwi-aor--- 100.00m                                             /dev/sdb1(1)                       
  [lvol0_rmeta_0]  test  ewi-aor---   4.00m                                             /dev/sda1(0)                       
  [lvol0_rmeta_1]  test  ewi-aor---   4.00m                                             /dev/sdb1(0)                       

[root@host-123 ~]# lvconvert -m 0 --type raid1 test/lvol0 /dev/sdFAKE
  Physical Volume "/dev/sdFAKE" not found in Volume Group "test".
[root@host-123 ~]# lvconvert -m 0 --type mirror test/lvol0 /dev/sdFAKE
  Physical Volume "/dev/sdFAKE" not found in Volume Group "test".
[root@host-123 ~]# lvconvert -m 0 --type raid1 test/lvol0 /dev/sdc1
  Unable to extract enough images to satisfy request
  Failed to extract images from test/lvol0
[root@host-123 ~]# lvconvert -m 0 --type mirror test/lvol0 /dev/sdc1
  Unable to extract enough images to satisfy request
  Failed to extract images from test/lvol0



# MIRROR
[root@host-123 ~]# lvcreate -m 1 --type mirror -L 100M test
  Logical volume "lvol0" created.
[root@host-123 ~]# lvs -a -o +devices
  LV               VG    Attr       LSize   Pool Origin Data%  Meta%  Move Log          Cpy%Sync Devices                            
  lvol0            test  mwi-a-m--- 100.00m                                [lvol0_mlog] 100.00   lvol0_mimage_0(0),lvol0_mimage_1(0)
  [lvol0_mimage_0] test  iwi-aom--- 100.00m                                                      /dev/sda1(0)                       
  [lvol0_mimage_1] test  iwi-aom--- 100.00m                                                      /dev/sdb1(0)                       
  [lvol0_mlog]     test  lwi-aom---   4.00m                                                      /dev/sdh1(0)                       

[root@host-123 ~]# lvconvert -m 0 --type raid1 test/lvol0 /dev/sdFAKE
  Physical Volume "/dev/sdFAKE" not found in Volume Group "test".
[root@host-123 ~]# lvconvert -m 0 --type mirror test/lvol0 /dev/sdFAKE
  Physical Volume "/dev/sdFAKE" not found in Volume Group "test".

# shouldn't this also fail?
[root@host-123 ~]# lvconvert -m 0 --type raid1 test/lvol0 /dev/sdc1
  Logical volume test/lvol0 converted.



Version-Release number of selected component (if applicable):
3.10.0-480.el7.x86_64

lvm2-2.02.164-3.el7    BUILT: Wed Aug 24 05:20:41 CDT 2016
lvm2-libs-2.02.164-3.el7    BUILT: Wed Aug 24 05:20:41 CDT 2016
lvm2-cluster-2.02.164-3.el7    BUILT: Wed Aug 24 05:20:41 CDT 2016
device-mapper-1.02.133-3.el7    BUILT: Wed Aug 24 05:20:41 CDT 2016
device-mapper-libs-1.02.133-3.el7    BUILT: Wed Aug 24 05:20:41 CDT 2016
device-mapper-event-1.02.133-3.el7    BUILT: Wed Aug 24 05:20:41 CDT 2016
device-mapper-event-libs-1.02.133-3.el7    BUILT: Wed Aug 24 05:20:41 CDT 2016
device-mapper-persistent-data-0.6.3-1.el7    BUILT: Fri Jul 22 05:29:13 CDT 2016
Comment 3 Jonathan Earl Brassow 2017-05-10 15:29:51 UTC 
unable to prioritize this "nice-to-have" bug for 7.4 - moving to 7.5