#!/bin/bash
# Run this script on the instance to be bundled

EBS_DEVICE=${1:-'/dev/sdh'}

mkdir /mnt/ebs
mkfs.ext3 ${EBS_DEVICE}
mount  ${EBS_DEVICE} /mnt/ebs

#make a local working copy
mkdir /mnt/tmp
rsync -av --exclude=/mnt/ --exclude=/proc/* / /mnt/tmp/

#remove files that should be instance specific
rm /mnt/tmp/root/.bash_history
rm /mnt/tmp/home/*/.bash_history
rm /mnt/tmp/etc/ssh/ssh_host_*
rm /mnt/tmp/etc/ssh/moduli
rm /mnt/tmp/etc/udev/rules.d/*persistent-net.rules

#ensure that ami init scripts will be run
chmod u+x /mnt/ebs/etc/init.d/ec2-init-user-data
rm /mnt/ebs/var/lib/ec2

#clear out log files
cd /mnt/tmp/var/log
for i in `ls ./**/*`; do
  echo $i && echo -n> $i
done

cd /mnt/tmp
tar -cSf - -C ./ . | tar xvf - -C /mnt/ebs/
#NOTE, rsync could be used, but this tar trickery saves some space in the snapshot

umount /mnt/ebs