Partial mirrored issue with the LV:

Partial mirrored issue with the LV:

mohisrv# lslv -m mohilv
mohilv:/mohifs
LP    PP1  PV1               PP2  PV2               PP3  PV3
0001  0064 hdisk2            0079 hdisk8
0002  0065 hdisk2            0080 hdisk8
0003  0066 hdisk2            0081 hdisk8
0004  0067 hdisk2
0005  0068 hdisk2
0006  0069 hdisk2
0007  0070 hdisk2
0008  0071 hdisk2
0009  0026 hdisk2

mohisrv# lsvg -l mohivg
mohivg:
LV NAME             TYPE       LPs     PPs     PVs  LV STATE      MOUNT POINT
loglv02             jfs2log    1       1       1    open/syncd    N/A
0516-1147 : Warning - logical volume fslv58 may be partially mirrored.
mohilv              jfs2       9       12      3    open/syncd    /mohifs

mohisrv# rmlvcopy mohilv 1 hdisk8
0516-022 lquerypv: Illegal parameter or structure value.
0516-304 getlvodm: Unable to find device id 0000000000000000 in the Device
        Configuration Database.
0516-848 rmlvcopy: Failure on physical volume 0000000000000000, it may be missing
        or removed.


mohisrv# mklvcopy mohilv 2 hdisk3
0516-1509 mklvcopy: VGDA corruption: physical partition info for this LV is invalid.
0516-842 mklvcopy: Unable to make logical partition copies for
        logical volume.
0516-1199 mirrorvg: Failed to create logical partition copies
        for logical volume bblv.
0516-1200 mirrorvg: Failed to mirror the volume group.

How to remove the partial mirrored copied from hdisk8?
We need to use low-level command lreducelv (becareful)

Syntax:
lreducelv -l -s

cat /tmp/file.txt
00c2545ba95e1e32 0079 0001
00c2545ba95e1e32 0080 0002
00c2545ba95e1e32 0081 0003

Preparation:
LV ID: 00c2545b00004c000000010ccff96e80.29
No of LPs: 3 (wc -l /tmp/file.txt)
Text file: /tmp/file.txt

Now the time to correct it!

lreducelv -l 00c2545b00004c000000010ccff96e80.29 -s 3 /tmp/file.txt

Now the lvm deallocates all PP's of your partially mirror from hdisk8

Note: After these, lslv -m will show correct output, but LVCB or VGDA could still show this wrongly
odmget -q name=mohilv CuAt | grep -p copies     --> Command to check

Hence it is safer if we update both LVCB and VGDA with the correct value

putlvodm -c 1 00c2545b00004c000000010ccff96e80.29
putlvcb -c 1 mohilv

Syntax:
putlvodm -c COPYNUM  LV ID
putlvcb -c COPYNUM  LV NAME


Thats it we resolved the partial mirror issue of the mohilv