source: http://bit.ly/EsrqQ

attach-volumes-example

#! /bin/sh
#
# /etc/init.d/mountec2vol
#
# chkconfig: 234 20 50
# description: Assigns an EC2 EBS Volume to a device and mounts the device
#
# To add this as a service run:
#   /sbin/chkconfig --add mountec2vol
#
# VARS 
#
VOL="vol-XXXXXXXX"
DEV="/dev/sdh"
MOUNT_POINT="/mnt"
export JAVA_HOME=/usr/java/jdk
export EC2_PRIVATE_KEY=/root/.ec2/pk-blahdeblah.pem
export EC2_CERT=/root/.ec2/cert-blahdeblah.pem
export EC2_HOME=/root/bin/ec2-api
PATH=$PATH:$HOME/bin:$EC2_HOME/bin
MAX_TRIES=60

# start/stop functions for OS

case "$1" in

start)
	INSTANCE=`curl http://169.254.169.254/latest/meta-data/instance-id 2> /dev/null`
	CTR=0
	/bin/echo "Mounting Elastic Block Store Volumes."
	ec2-attach-volume $VOL -i $INSTANCE -d $DEV
	while [ ! -e "$DEV" ]; do 
		/bin/sleep 1
		CTR=`expr $CTR + 1`
		if [ $CTR -eq $MAX_TRIES ]
		then
			/bin/echo "WARNING: Cannot attach volume $VOL to $DEV -- Giving up after $MAX_TRIES attempts"
			exit 1
		fi
	done
	if [ ! -d $MOUNT_POINT ]; then
		mkdir $MOUNT_POINT
	fi
	/bin/mount $DEV $MOUNT_POINT
	;;

stop)
	/bin/echo "Unmounting Elastic Block Store Volumes."
	/bin/umount $MOUNT_POINT
	ec2-detach-volume $VOL
	;;
restart)
	stop
	sleep 5
	start
	;;
*)
	echo "Usage: $0 {start|stop|restart}"
	exit 1

esac

exit 0