Created attachment 440970 [details]
Patch for rhel5 to disallow new mirror conversion while one is already happening

Patch is upstream since LVM2 Version 2.02.64 - 30th April 2010
WHATS_NEW entry:
  Disallow the addition of mirror images while a conversion is happening.

Fix in lvm2-2.02.73-1.el5.

The basic inactive lvconvert to mirror now works, still running all the other newly added test cases as a result of this bug...

[root@taft-01 ~]# lvs -a -o +devices
  LV       VG         Attr   LSize   Copy%  Devices
  volume   taft       -wi--- 500.00M        /dev/sdb1(0)

[root@taft-01 ~]# lvconvert -m+1 taft/volume /dev/sdc1 /dev/sdd1
  Conversion starts after activation.

[root@taft-01 ~]# lvchange -ay taft/volume

[root@taft-01 ~]# lvs -a -o +devices
  LV                VG         Attr   LSize   Log         Copy%  Devices
  volume            taft       mwi-a- 500.00M volume_mlog  43.20 volume_mimage_0(0),volume_mimage_1(0)
  [volume_mimage_0] taft       Iwi-ao 500.00M                    /dev/sdb1(0)
  [volume_mimage_1] taft       Iwi-ao 500.00M                    /dev/sdc1(0)
  [volume_mlog]     taft       lwi-ao   4.00M                    /dev/sdd1(0)

[root@taft-01 ~]# lvs -a -o +devices
  LV                VG         Attr   LSize   Log         Copy%  Devices
  volume            taft       mwi-a- 500.00M volume_mlog 100.00 volume_mimage_0(0),volume_mimage_1(0)
  [volume_mimage_0] taft       iwi-ao 500.00M                    /dev/sdb1(0)
  [volume_mimage_1] taft       iwi-ao 500.00M                    /dev/sdc1(0)
  [volume_mlog]     taft       lwi-ao   4.00M                    /dev/sdd1(0)


2.6.18-227.el5

lvm2-2.02.74-1.el5    BUILT: Fri Oct 15 10:26:21 CDT 2010
lvm2-cluster-2.02.74-2.el5    BUILT: Fri Oct 29 07:48:11 CDT 2010
device-mapper-1.02.55-1.el5    BUILT: Fri Oct 15 06:15:55 CDT 2010
cmirror-1.1.39-10.el5    BUILT: Wed Sep  8 16:32:05 CDT 2010
kmod-cmirror-0.1.22-3.el5    BUILT: Tue Dec 22 13:39:47 CST 2009

The test cases for the lv conversion of inactive mirrors/linears eventually ends up failing due to issue 591710. However, the basic functionality works. Marking verified.

lvconvert --mirrorlog disk -m 1 centipede/centi_base /dev/sdb3
sufficient pvs convert case failed on grant-01
  Unable to determine mirror sync status of centipede/centi_base_mlog.
  Unable to remove primary mirror image while mirror is not in-sync

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0052.html