#!/bin/ksh

# .............................................................................

#

# Name          /u01/dba/aix/chkvgspc.ksh

#

# Purpose       Check there is enough space in the parent Volume Group to

#               expand the specified filesystem to a specifified size (MB)

#

# Usage         /u01/dba/aix/chkvgspc.ksh /filesystem TargetSizeInMB

#

# HISTORY

#   Ver       Date         Who  Comments

#   --------  -----------  ---  -----------------------

#   01.00.00  13-Mar-2020  MPG  Created

#

# .............................................................................

VERSION="01.00.00 (13-Mar-2020 Build 1)"

echo "==============================================================================="

echo "$(basename $0) v${VERSION} "

echo "Volume Group Space Check"

echo "Started at $(date) on server $(hostname -s) by ${USER}"

echo "==============================================================================="

trap "echo \"\";echo \"===[ End of report ]===========================================================\"; exit" 0 1 2 15

echo ""

case $(uname) in

   AIX) ;;

   *)   echo "$(date +%H:%M:%S): ERROR: chkvgspc.ksh only runs on AIX"

        exit 1

        ;;

esac

if [ $# -ne 2 ]

then

   echo "$(date +%H:%M:%S): ERROR: Usage: chkvgspc.ksh /filesystem sizeinmb"

   exit 1

fi

MYFS=$1

MYFSSZ=$2

lvn=$(lsfs | grep ${MYFS}| awk '{ print $1 }' | cut -d/ -f3)

usb=$(lsfs | grep ${MYFS}| awk '{ print $5 }')

(( usm = ${usb} / 2048 ))

vgn=$(lslv ${lvn} | grep "VOLUME GROUP" | awk '{ print $6 }')

fre=$(lsvg ${vgn} | grep "FREE PPs" | awk '{ sub(/\(/,""); print $7 }')

(( ava = ${fre} + ${usm} ))

echo "*******************************************************"

echo "Target Size for ${MYFS} (${lvn}): ${MYFSSZ}"

echo "Available space in Volume Group (${vgn}) : ${ava}"

echo ${MYFSSZ} ${ava} | awk '{ if ($1 > $2) print "*** VG TOO SMALL!"; else print "*** OK"; }'

echo "*******************************************************"

exit 0