#!/bin/ksh  
#
# Simple backup script for a list of volume groups.  All filesystems
# in each of the volume groups specified will be backed up using the
# "backup" command.
#
# Andy Welter
# www.the-welters.com
# February 17, 1999
#
# parms:
# -log  If this parm is used, script output will be logged to 
#       /var/adm/logs/backup.YYMMDD.log.  Otherwise script output
#       will be written to the screen.
# <vglist>  A list of additional volume groups to backup.  If not present, the 
#       The script defaults to backing up "rootvg" only.
# 
DEV=/dev/rmt0.1
PRINT=""

while [ "$1" != "" ]; do
case $1 in 
	"-log")
		# Redirect output to the log file
		LOG=`date +"/var/adm/logs/backup.%y%m%d.log"`
		exec 2> $LOG >&2
		;;
	"-print")
		PRINT="yes"
		;;
	*)
		VGLIST="$VGLIST $1"
	esac
shift
done

if [ "$VGLIST" = "" ]; then
	VGLIST=""
fi
# Get list of mount points
for VG in $VGLIST; do
	lsvg -l $VG | grep " jfs " | \
	while read LV junk2 junk3 junk4 junk5 junk6 FS; do
		FSLIST="$FSLIST $FS"
	done
done
if [ "$FSLIST" = "" ]; then
	echo "NOTE:  No extra file systems specified."
	echo "NOTE:  Only rootvg will be backed up."
fi
RC=0
date +"begin backup at %y/%m/%d %H:%M"
echo "Performing a mksysb and backing up the following file systems: $FSLIST"
echo "Run mksysb..."
mkszfile && mksysb -m -i -X $DEV
RC2=$?
RC=`expr $RC + $RC2`
date +"mksysb complete at %y%m%d %H:%M"

for FS in $FSLIST; do
	date +"backup $FS %y/%m/%d %H:%M"
	/etc/backup -0 -f $DEV $FS
	RC2=$?
	RC=`expr $RC + $RC2`
	if [ $RC -eq 0 ]; then 
		echo "SUCCESS: done with $FS"
	else
		echo "ERROR: Backup of $FS failed"
	fi
	echo
done
# eject the tape

if [ $RC -eq 0 ]; then
	echo "ejecting the tape..."
	mt -f $DEV offline
else
	echo "ERROR: at least one backup had errors."
fi

date +"done with backup at %y/%m/%d %H:%M"

if [ "$PRINT" = "yes" ]; then
	lp $LOG
fi