#!/bin/bash

#
# This postscript sets up a scratch area on the local disk for stateless
# nodes. It is for Linux only. 
# If run with -f flag, it will wipe out all the contents on the disk and
# repartition the disk before setting up the scratch area. 
#
#====================================================================
ME="setupscratch"

mydir="/scratch"
umount $mydir

if [[ $1 != "-f" ]]
then
    if grep sda1 /proc/partitions >/dev/null 2>&1
    then
	    echo Autodetected existing /dev/sda1
	    logger -t xcat -p local4.info $ME Autodetected existing /dev/sda1
	    echo Checking filesystem /dev/sda1
	    logger -t  xcat -p local4.info $ME Checking filesystem /dev/sda1
	    fsck -y /dev/sda1
	    mkdir -p $mydir 
	    echo mounting existing /dev/sda1 to $mydir 
	    logger -t  xcat -p local4.info $ME mounting existing /dev/sda1 to $mydir
	    if mount /dev/sda1 $mydir
	    then
		    echo
		    echo Done!
		    echo
		    exit 0
	    else
		    echo mounting /dev/sda1 to $mydir failed
		    logger -t  xcat -p local4.warning  $ME mounting /dev/sda1 to $mydir failed
	    fi
    fi
fi


echo Creating Partition
logger -t  xcat -p local4.info $ME Creating Partition
parted -s /dev/sda mklabel gpt 
parted -s -- /dev/sda mkpart primary ext3 0 -0
if grep sda1 /proc/partitions >/dev/null 2>&1
then
	sleep 5
else
	echo failed to create partition, exiting $ME
	logger -t  xcat -p local4.err  $ME failed to create partition, exiting $ME
	echo
	echo Failed!
	echo
	exit 1
fi

echo Creating new ext3 filesystem: /dev/sda1
logger -t  xcat -p local4.info $ME Creating new ext3 filesystem: /dev/sda1
mke2fs -j /dev/sda1
mkdir -p $mydir
echo mounting new /dev/sda1 to $mydir
logger -t  xcat -p local4.info $ME mounting new /dev/sda1 to $mydir
mount /dev/sda1 $mydir
echo
echo Done!
echo
exit 0