openstack-bundle-ami

#!/bin/bash -e
# Copyright (c) 2011-2015 TurnKey GNU/Linux - http://www.turnkeylinux.org
# 
# This file is part of buildtasks.
# 
# Buildtasks is free software; you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at your
# option) any later version.


fatal() { echo "FATAL [$(basename $0)]: $@" 1>&2; exit 1; }
info() { echo "INFO [$(basename $0)]: $@"; }

usage() {
cat<<EOF
Syntax: $0 rootfs
Bundles rootfs into an openstack tarball

Arguments::

    rootfs          - root filesystem path

EOF
exit 1
}

if [[ "$#" != "1" ]]; then
    usage
fi

rootfs=$1
name=$(echo $rootfs | sed 's/.rootfs//')
appname=$(echo $name |sed 's/turnkey-\(.*\)-[0-9].*/\1/')

case "$appname" in
    canvas)           loopsize_padding=524288 ;;
    ejabberd)         loopsize_padding=524288 ;;
    appengine-python) loopsize_padding=524288 ;;
    *)                loopsize_padding=262144 ;;
esac

info "getting size for loopback"
rootsize=$(du -s $rootfs | awk '{print $1}')
loopsize=$[$rootsize + $loopsize_padding]

info "creating sparse loopback"
dd if=/dev/null of=$rootfs.img bs=1 seek=${loopsize}K
mkfs.ext4 -F -j $rootfs.img

mkdir $rootfs.img.mount
mount -o loop $rootfs.img $rootfs.img.mount

info "syncing rootfs to loopback"
rsync -a -t -r -S -I -H $rootfs/ $rootfs.img.mount

info "umount loopback"
umount -d $rootfs.img.mount
rmdir $rootfs.img.mount

info "setting up image directory"
mkdir $name
mv $rootfs.img $name/$name.img
cp $rootfs/boot/vmlinuz-* $name/$name-kernel
cp $rootfs/boot/initrd.img-* $name/$name-initrd

info "creating $name-openstack.tar.gz"
tar --sparse -zcvf $name-openstack.tar.gz $name

if [ -z "$BT_DEBUG" ]; then
    info "removing directory"
    rm -rf $name
fi