Bug 1280450

Summary: should a raid volume converted to a thin lv with an external origin lose its Cpy%Sync?
Product: Red Hat Enterprise Linux 7 Reporter: Corey Marthaler <cmarthal>
Component: lvm2Assignee: Zdenek Kabelac <zkabelac>
lvm2 sub component: Thin Provisioning QA Contact: cluster-qe <cluster-qe>
Status: CLOSED WONTFIX Docs Contact:
Severity: medium    
Priority: unspecified CC: agk, heinzm, jbrassow, msnitzer, prajnoha, rhandlin, thornber, zkabelac
Version: 7.2   
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Last Closed: 2020-12-15 07:38:23 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Corey Marthaler 2015-11-11 18:38:24 UTC 
Description of problem:
This may be expected behavior, but even read only raid volumes maintain their current sync percentage.

[root@host-109 ~]# lvcreate -m 1 -n raid --type raid1 -L 100M black_bird
  Logical volume "raid" created.
[root@host-109 ~]# lvs -a -o +devices
  LV              VG          Attr       LSize   Pool Origin Data%  Meta% Cpy%Sync Devices
  raid            black_bird  rwi-a-r--- 100.00m                          100.00   raid_rimage_0(0),raid_rimage_1(0)
  [raid_rimage_0] black_bird  iwi-aor--- 100.00m                                   /dev/sda1(1)
  [raid_rimage_1] black_bird  iwi-aor--- 100.00m                                   /dev/sdb1(1)
  [raid_rmeta_0]  black_bird  ewi-aor---   4.00m                                   /dev/sda1(0)
  [raid_rmeta_1]  black_bird  ewi-aor---   4.00m                                   /dev/sdb1(0)

[root@host-109 ~]# lvcreate --type thin-pool -n POOL -L 500M black_bird /dev/sdd1
  Logical volume "POOL" created.
[root@host-109 ~]# lvs -a -o +devices
  LV              VG          Attr       LSize   Pool Origin Data%  Meta% Cpy%Sync Devices
  POOL            black_bird  twi-a-tz-- 500.00m             0.00   0.88           POOL_tdata(0)
  [POOL_tdata]    black_bird  Twi-ao---- 500.00m                                   /dev/sdd1(1)
  [POOL_tmeta]    black_bird  ewi-ao----   4.00m                                   /dev/sdd1(126)
  [lvol0_pmspare] black_bird  ewi-------   4.00m                                   /dev/sdd1(0)
  raid            black_bird  rwi-a-r--- 100.00m                          100.00   raid_rimage_0(0),raid_rimage_1(0)
  [raid_rimage_0] black_bird  iwi-aor--- 100.00m                                   /dev/sda1(1)
  [raid_rimage_1] black_bird  iwi-aor--- 100.00m                                   /dev/sdb1(1)
  [raid_rmeta_0]  black_bird  ewi-aor---   4.00m                                   /dev/sda1(0)
  [raid_rmeta_1]  black_bird  ewi-aor---   4.00m                                   /dev/sdb1(0)


# Sync percent status is now gone:
[root@host-109 ~]# lvconvert --thinpool black_bird/POOL --originname raidextorig -T raid --yes
  Logical volume "raidextorig" created.
  Converted black_bird/raid to thin volume with external origin black_bird/raidextorig.
[root@host-109 ~]# lvs -a -o +devices
  LV                     VG          Attr       LSize   Pool Origin      Data%  Meta% Cpy%Sync Devices
  POOL                   black_bird  twi-aotz-- 500.00m                  0.00   0.98           POOL_tdata(0)
  [POOL_tdata]           black_bird  Twi-ao---- 500.00m                                        /dev/sdd1(1)
  [POOL_tmeta]           black_bird  ewi-ao----   4.00m                                        /dev/sdd1(126)
  [lvol0_pmspare]        black_bird  ewi-------   4.00m                                        /dev/sdd1(0)
  raid                   black_bird  Vwi-a-tz-- 100.00m POOL raidextorig 0.00
  raidextorig            black_bird  ori---r--- 100.00m                                        raidextorig_rimage_0(0),raidextorig_rimage_1(0)
  [raidextorig_rimage_0] black_bird  Iwi-aor-r- 100.00m                                        /dev/sda1(1)
  [raidextorig_rimage_1] black_bird  Iwi-aor-r- 100.00m                                        /dev/sdb1(1)
  [raidextorig_rmeta_0]  black_bird  ewi-aor-r-   4.00m                                        /dev/sda1(0)



Version-Release number of selected component (if applicable):
3.10.0-327.el7.x86_64

lvm2-2.02.130-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
lvm2-libs-2.02.130-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
lvm2-cluster-2.02.130-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
device-mapper-1.02.107-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
device-mapper-libs-1.02.107-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
device-mapper-event-1.02.107-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
device-mapper-event-libs-1.02.107-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
device-mapper-persistent-data-0.5.5-1.el7    BUILT: Thu Aug 13 09:58:10 CDT 2015
cmirror-2.02.130-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
sanlock-3.2.4-1.el7    BUILT: Fri Jun 19 12:48:49 CDT 2015
sanlock-lib-3.2.4-1.el7    BUILT: Fri Jun 19 12:48:49 CDT 2015
lvm2-lockd-2.02.130-5.el7    BUILT: Wed Oct 14 08:27:29 CDT 2015
Comment 6 RHEL Program Management 2020-12-15 07:38:23 UTC 
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.