Solaris How to grow vxfs filesystem reside on disksuite without soft partition

This can also be done on vxvm vol. It does not matter it is just vxfs style to grow.
** be carefull with fadm command as it can shrink the filesystem
partition> p
Current partition table (original):
Total disk cylinders available: 24620 + 2 (reserved cylinders)

Part Tag Flag Cylinders Size Blocks
0 root wm 1 - 3630 5.00GB (3630/0/0) 10487070
1 swap wu 3631 - 4356 1.00GB (726/0/0) 2097414
2 backup wm 0 - 24619 33.92GB (24620/0/0) 71127180
3 unassigned wm 10962 - 24028 18.00GB (13067/0/0) 37750563 <-----added size
4 unassigned wm 10891 - 10961 100.16MB (71/0/0) 205119
5 usr wm 4357 - 5808 2.00GB (1452/0/0) 4194828
6 usr wm 5809 - 10164 6.00GB (4356/0/0) 12584484 <----- actual size
7 usr wm 10165 - 10890 1.00GB (726/0/0) 2097414

partition>

# metattach d46 c0t0d0s3
# metattach d76 c0t1d0s3
# metastat d6
d6: Mirror
Submirror 0: d46
State: Okay
Submirror 1: d76
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 50335047 blocks

d46: Submirror of d6
State: Okay
Size: 50335047 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c0t0d0s6 0 No Okay
Stripe 1:
Device Start Block Dbase State Hot Spare <-------- added
c0t0d0s3 0 No Okay


d76: Submirror of d6
State: Okay
Size: 50335047 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c0t1d0s6 0 No Okay
Stripe 1:
Device Start Block Dbase State Hot Spare <-------- added
c0t1d0s3 0 No Okay


root@:/opt/VRTSvxfs/sbin # ./fsadm -b 23g /var/nas/.nfsvol **23g is final size
UX:vxfs fsadm: INFO: V-3-23585: /dev/md/rdsk/d6 is currently 12582912 sectors - size will be increased
root@:/opt/VRTSvxfs/sbin # df -k /var/nas/.nfsvol
Filesystem kbytes used avail capacity Mounted on
/dev/md/dsk/d6 24117248 5093342 17853137 23% /var/nas/.nfsvol
root@:/opt/VRTSvxfs/sbin # cd /var/nas/.nfsvol
root@:/var/nas/.nfsvol # ls
cyclone cyclone5 dstx home lost+found mercator tomcat var_cyclone
root@:/var/nas/.nfsvol #