grow fs ufs

Hi guru.

I would like to grow a file system UFS managed by VxVM by 5GB

# df -h /opt/sybase/data
    Filesystem             size   used  avail capacity  Mounted on
    /dev/vx/dsk/datadg/lv_nms_data
                            89G    74G    14G    85%    /opt/sybase/data 

I want to be sure that the below commands are not dangerous:

for verify the maximum size for my volume:

# vxassist -g datadg maxgrow lv_nms_data

and, after that I can use this commands, probably:

# fsdb -F ufs /dev/vx/dsk/datadg/lv_nms_data 

# vxassist -g datadg growby lv_nms_data 5g   

# vxprint  lv_nms_data

# /usr/lib/fs/ufs/mkfs -M  /opt/sybase/data  /dev/vx/rdsk/datadg/lv_nms_data <value in block>

or

# growfs -M /opt/sybase/data /dev/vx/rdsk/datadg/lv_nms_data

is this procedure correct ?

BR and thank you very much

Tiziano