Bug 1774696

Summary: mirror type leg conversion needs warning if mirror "already has image count" of request like raid1
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: medium CC: agk, heinzm, jbrassow, msnitzer, prajnoha, rhandlin, zkabelac
Version: 7.8Keywords: Triaged
Target Milestone: rc   
Target Release: ---   
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: 2020-11-18 15:29:01 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 2019-11-20 18:11:36 UTC 
Description of problem:
### MIRROR
[root@hayes-01 ~]# lvcreate -m 2 --type mirror -n foo -L 100M centipede2
  Logical Volume "foo" already exists in volume group "centipede2"
[root@hayes-01 ~]# lvs -a -o +devices
  LV             VG         Attr       LSize   Pool Origin Data%  Meta%  Move Log        Cpy%Sync Convert Devices
  foo            centipede2 mwi-a-m--- 100.00m                                [foo_mlog] 100.00           foo_mimage_0(0),foo_mimage_1(0),foo_mimage_2(0)
  [foo_mimage_0] centipede2 iwi-aom--- 100.00m                                                            /dev/sdg1(0)
  [foo_mimage_1] centipede2 iwi-aom--- 100.00m                                                            /dev/sde1(0)
  [foo_mimage_2] centipede2 iwi-aom--- 100.00m                                                            /dev/sdb1(0)
  [foo_mlog]     centipede2 lwi-aom---   4.00m                                                            /dev/sdf1(0)
# No warning/output
[root@hayes-01 ~]# lvconvert --yes  -m 2 centipede2/foo
[root@hayes-01 ~]# 


### RAID1
[root@hayes-01 ~]# lvcreate -m 2 --type raid1 -n bar -L 100M centipede2
  Logical volume "bar" created.
[root@hayes-01 ~]# lvs -a -o +devices
  LV             VG         Attr       LSize   Pool Origin Data%  Meta%  Move Log        Cpy%Sync Convert Devices                                        
  bar            centipede2 rwi-a-r--- 100.00m                                           100.00           bar_rimage_0(0),bar_rimage_1(0),bar_rimage_2(0)
  [bar_rimage_0] centipede2 iwi-aor--- 100.00m                                                            /dev/sdg1(26)                                  
  [bar_rimage_1] centipede2 iwi-aor--- 100.00m                                                            /dev/sde1(26)                                  
  [bar_rimage_2] centipede2 iwi-aor--- 100.00m                                                            /dev/sdb1(26)                                  
  [bar_rmeta_0]  centipede2 ewi-aor---   4.00m                                                            /dev/sdg1(25)                                  
  [bar_rmeta_1]  centipede2 ewi-aor---   4.00m                                                            /dev/sde1(25)                                  
  [bar_rmeta_2]  centipede2 ewi-aor---   4.00m                                                            /dev/sdb1(25)                                  
[root@hayes-01 ~]# lvconvert --yes  -m 2 centipede2/bar
  WARNING: centipede2/bar already has image count of 3.
  Logical volume centipede2/bar successfully converted.


Version-Release number of selected component (if applicable):
3.10.0-1109.el7.x86_64

lvm2-2.02.186-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
lvm2-libs-2.02.186-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
lvm2-cluster-2.02.186-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
lvm2-lockd-2.02.186-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
device-mapper-1.02.164-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
device-mapper-libs-1.02.164-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
device-mapper-event-1.02.164-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
device-mapper-event-libs-1.02.164-3.el7    BUILT: Fri Nov  8 07:07:01 CST 2019
device-mapper-persistent-data-0.8.5-1.el7    BUILT: Mon Jun 10 03:58:20 CDT 2019


How reproducible:
Everytime
Comment 2 Heinz Mauelshagen 2020-07-20 13:44:21 UTC 
Commit IDs:
master      -> 3c9177fdc0b8f94c0ae335790a485477901b685d
stable-2.02 -> 7f41d49f497e2b886f197121551db585dff29b6e
Comment 3 Heinz Mauelshagen 2020-09-28 15:22:15 UTC 
Reverted on both branches as of https://bugzilla.redhat.com/show_bug.cgi?id=1872130.