HP-UX extending strict/ distributed volumes with PVG

how to extend strict/distributed volumes.
HP-UX version : 11.31
HOST1@root:/> ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
==================================================================
disk 0 0/2/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP IR Volume
/dev/dsk/c0t0d0 /dev/dsk/c0t0d0s2 /dev/rdsk/c0t0d0 /dev/rdsk/c0t0d0s2
/dev/dsk/c0t0d0s1 /dev/dsk/c0t0d0s3 /dev/rdsk/c0t0d0s1 /dev/rdsk/c0t0d0s3
disk 2 0/3/0/0/0/0.10.4.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c3t0d0 /dev/rdsk/c3t0d0
disk 3 0/3/0/0/0/0.10.4.0.0.0.1 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c3t0d1 /dev/rdsk/c3t0d1
disk 4 0/3/0/0/0/0.10.4.0.0.0.2 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c3t0d2 /dev/rdsk/c3t0d2
disk 5 0/3/0/0/0/0.10.4.0.0.0.3 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c3t0d3 /dev/rdsk/c3t0d3
disk 6 0/3/0/0/0/0.10.4.0.0.0.4 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c3t0d4 /dev/rdsk/c3t0d4
disk 7 0/3/0/0/0/1.20.4.0.0.0.0 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d0
disk 8 0/3/0/0/0/1.20.4.0.0.0.1 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c5t0d1 /dev/rdsk/c5t0d1
disk 9 0/3/0/0/0/1.20.4.0.0.0.2 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c5t0d2 /dev/rdsk/c5t0d2
disk 10 0/3/0/0/0/1.20.4.0.0.0.3 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c5t0d3 /dev/rdsk/c5t0d3
disk 11 0/3/0/0/0/1.20.4.0.0.0.4 sdisk CLAIMED DEVICE HP OPEN-V
/dev/dsk/c5t0d4 /dev/rdsk/c5t0d4
HOST1@root:/> ioscan -funC disk |wc -l
25
HOST1@root:/>
HOST1@root:/> xpinfo -i

Device File ALPA Tgt Lun Port CU:LDev Type Serial#
================================================================================
/dev/rdisk/disk12 d5 00 00 CL6A 00:28 OPEN-V 00025796
/dev/rdisk/disk13 e4 00 01 CL5A 01:02 OPEN-V 00025796
/dev/rdisk/disk14 e4 00 02 CL5A 03:15 OPEN-V 00025796
/dev/rdisk/disk15 e4 00 03 CL5A 04:02 OPEN-V 00025796
/dev/rdisk/disk16 d5 00 04 CL6A 02:02 OPEN-V 00025796
HOST1@root:/>
HOST1@root:/> ioscan -m dsf
Persistent DSF Legacy DSF(s)
========================================
/dev/rchgr/autoch1 /dev/rac/c1t0d0
/dev/rdisk/disk1 /dev/rdsk/c0t0d0
/dev/rdisk/disk1_p1 /dev/rdsk/c0t0d0s1
/dev/rdisk/disk1_p2 /dev/rdsk/c0t0d0s2
/dev/rdisk/disk1_p3 /dev/rdsk/c0t0d0s3
/dev/pt/pt2 /dev/rscsi/c2t0d0
/dev/rscsi/c4t0d0
/dev/rtape/tape3_BEST /dev/rmt/c6t0d0BEST
/dev/rtape/tape3_BESTn /dev/rmt/c6t0d0BESTn
/dev/rtape/tape3_BESTb /dev/rmt/c6t0d0BESTb
/dev/rtape/tape3_BESTnb /dev/rmt/c6t0d0BESTnb
/dev/rtape/tape4_BEST /dev/rmt/c1t0d1BEST
/dev/rtape/tape4_BESTn /dev/rmt/c1t0d1BESTn
/dev/rtape/tape4_BESTb /dev/rmt/c1t0d1BESTb
/dev/rtape/tape4_BESTnb /dev/rmt/c1t0d1BESTnb
/dev/rdisk/disk12 /dev/rdsk/c3t0d0
/dev/rdsk/c5t0d0
/dev/rdisk/disk13 /dev/rdsk/c3t0d1
/dev/rdsk/c5t0d1
/dev/rdisk/disk14 /dev/rdsk/c3t0d2
/dev/rdsk/c5t0d2
/dev/rdisk/disk15 /dev/rdsk/c3t0d3
/dev/rdsk/c5t0d3
/dev/rdisk/disk16 /dev/rdsk/c3t0d4
/dev/rdsk/c5t0d4
HOST1@root:/dev/dsk> insf -C disk
insf: Installing special files for sdisk instance 21 address 0/3/0/0/0/0.10.4.0.0.0.5
insf: Installing special files for sdisk instance 22 address 0/3/0/0/0/0.10.4.0.0.0.6
insf: Installing special files for sdisk instance 23 address 0/3/0/0/0/0.10.4.0.0.0.7
insf: Installing special files for sdisk instance 24 address 0/3/0/0/0/0.10.4.0.0.1.0
insf: Installing special files for sdisk instance 17 address 0/3/0/0/0/1.20.4.0.0.0.5
insf: Installing special files for sdisk instance 18 address 0/3/0/0/0/1.20.4.0.0.0.6
insf: Installing special files for sdisk instance 19 address 0/3/0/0/0/1.20.4.0.0.0.7
insf: Installing special files for sdisk instance 20 address 0/3/0/0/0/1.20.4.0.0.1.0
insf: Installing special files for esdisk instance 25 address 64000/0xfa00/0x17
insf: Installing special files for esdisk instance 26 address 64000/0xfa00/0x18
insf: Installing special files for esdisk instance 27 address 64000/0xfa00/0x19
insf: Installing special files for esdisk instance 28 address 64000/0xfa00/0x1a

vgextend -g PVGRAID5-2 /dev/vgsap /dev/disk/disk25 /dev/disk/disk26


HOST1@root:/dev/dsk> strings /etc/lvmpvg
VG /dev/vgsap
PVG PVRAID5
/dev/disk/disk12
/dev/disk/disk13
/dev/disk/disk14
/dev/disk/disk15
HOST1@root:/dev/dsk> cp /etc/lvmpvg /var/tmp/lvmpvg.bck
HOST1@root:/dev/dsk> vgextend -g PVRAID5-2 /dev/vgsap /dev/disk/disk25 /dev/disk/disk26 /dev/disk/disk27 /dev/disk/disk28
Volume group "/dev/vgsap" has been successfully extended.
Physical volume group "PVRAID5-2" has been successfully extended.
Volume Group configuration for /dev/vgsap has been saved in /etc/lvmconf/vgsap.conf
HOST1@root:/dev/dsk> strings /etc/lvmpvg
VG /dev/vgsap
PVG PVRAID5
/dev/disk/disk12
/dev/disk/disk13
/dev/disk/disk14
/dev/disk/disk15
PVG PVRAID5-2
/dev/disk/disk25
/dev/disk/disk26
/dev/disk/disk27
/dev/disk/disk28
HOST1@root:/dev/dsk>
HOST1@root:/dev/dsk> lvextend -L 135168 /dev/vgsap/lvsapdata1 PVRAID5-2
Logical volume "/dev/vgsap/lvsapdata1" has been successfully extended.
Volume Group configuration for /dev/vgsap has been saved in /etc/lvmconf/vgsap.conf
HOST1@root:/dev/dsk>