devstack_custom/tools/get_uec_image.sh

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#!/bin/bash
# get_uec_image.sh - Prepare Ubuntu UEC images
CACHEDIR=${CACHEDIR:-/opt/stack/cache}
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ROOTSIZE=${ROOTSIZE:-2000}
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# Keep track of the current directory
TOOLS_DIR=$(cd $(dirname "$0") && pwd)
TOP_DIR=`cd $TOOLS_DIR/..; pwd`
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# exit on error to stop unexpected errors
set -o errexit
set -o xtrace
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usage() {
echo "Usage: $0 - Fetch and prepare Ubuntu images"
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echo ""
echo "$0 [-r rootsize] release imagefile [kernel]"
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echo ""
echo "-r size - root fs size (min 2000MB)"
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echo "release - Ubuntu release: jaunty - oneric"
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echo "imagefile - output image file"
echo "kernel - output kernel"
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exit 1
}
# Clean up any resources that may be in use
cleanup() {
set +o errexit
# Mop up temporary files
if [ -n "$IMG_FILE_TMP" -a -e "$IMG_FILE_TMP" ]; then
rm -f $IMG_FILE_TMP
fi
# Kill ourselves to signal any calling process
trap 2; kill -2 $$
}
while getopts hr: c; do
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case $c in
h) usage
;;
r) ROOTSIZE=$OPTARG
;;
esac
done
shift `expr $OPTIND - 1`
if [[ ! "$#" -eq "2" && ! "$#" -eq "3" ]]; then
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usage
fi
# Default args
DIST_NAME=$1
IMG_FILE=$2
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IMG_FILE_TMP=`mktemp $IMG_FILE.XXXXXX`
KERNEL=$3
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case $DIST_NAME in
oneiric) ;;
natty) ;;
maverick) ;;
lucid) ;;
*) echo "Unknown release: $DIST_NAME"
usage
;;
esac
trap cleanup SIGHUP SIGINT SIGTERM SIGQUIT EXIT
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# Check dependencies
if [ ! -x "`which qemu-img`" -o -z "`dpkg -l | grep cloud-utils`" ]; then
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# Missing KVM?
apt_get install qemu-kvm cloud-utils
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fi
# Find resize script
RESIZE=`which resize-part-image || which uec-resize-image`
if [ -z "$RESIZE" ]; then
echo "resize tool from cloud-utils not found"
exit 1
fi
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# Get the UEC image
UEC_NAME=$DIST_NAME-server-cloudimg-amd64
if [ ! -d $CACHEDIR ]; then
mkdir -p $CACHEDIR/$DIST_NAME
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fi
if [ ! -e $CACHEDIR/$DIST_NAME/$UEC_NAME.tar.gz ]; then
(cd $CACHEDIR/$DIST_NAME && wget -N http://uec-images.ubuntu.com/$DIST_NAME/current/$UEC_NAME.tar.gz)
(cd $CACHEDIR/$DIST_NAME && tar Sxvzf $UEC_NAME.tar.gz)
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fi
$RESIZE $CACHEDIR/$DIST_NAME/$UEC_NAME.img ${ROOTSIZE} $IMG_FILE_TMP
mv $IMG_FILE_TMP $IMG_FILE
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# Copy kernel to destination
if [ -n "$KERNEL" ]; then
cp -p $CACHEDIR/$DIST_NAME/*-vmlinuz-virtual $KERNEL
fi
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trap - SIGHUP SIGINT SIGTERM SIGQUIT EXIT