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make_image.sh
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executable file
·178 lines (160 loc) · 3.98 KB
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#!/bin/bash
# make_image.sh - Create Ubuntu images in various formats
#
# Supported formats: qcow (kvm), vmdk (vmserver), vdi (vbox), vhd (vpc), raw
#
# Requires sudo to root
ROOTSIZE=${ROOTSIZE:-8192}
SWAPSIZE=${SWAPSIZE:-1024}
MIN_PKGS=${MIN_PKGS:-"apt-utils gpgv openssh-server"}
usage() {
echo "Usage: $0 - Create Ubuntu images"
echo ""
echo "$0 [-m] [-r rootsize] [-s swapsize] release format"
echo "$0 -C [-m] release chrootdir"
echo "$0 -I [-r rootsize] [-s swapsize] chrootdir format"
echo ""
echo "-C - Create the initial chroot dir"
echo "-I - Create the final image from a chroot"
echo "-m - minimal installation"
echo "-r size - root fs size in MB"
echo "-s size - swap fs size in MB"
echo "release - Ubuntu release: jaunty - oneric"
echo "format - image format: qcow2, vmdk, vdi, vhd, xen, raw, fs"
exit 1
}
while getopts CIhmr:s: c; do
case $c in
C) CHROOTONLY=1
;;
I) IMAGEONLY=1
;;
h) usage
;;
m) MINIMAL=1
;;
r) ROOTSIZE=$OPTARG
;;
s) SWAPSIZE=$OPTARG
;;
esac
done
shift `expr $OPTIND - 1`
if [ ! "$#" -eq "2" -o -n "$CHROOTONLY" -a -n "$IMAGEONLY" ]; then
usage
fi
# Default args
RELEASE=$1
FORMAT=$2
CHROOTDIR=""
if [ -n "$CHROOTONLY" ]; then
RELEASE=$1
CHROOTDIR=$2
FORMAT="pass"
fi
if [ -n "$IMAGEONLY" ]; then
CHROOTDIR=$1
FORMAT=$2
RELEASE="pass"
fi
case $FORMAT in
kvm|qcow2) FORMAT=qcow2
QFORMAT=qcow2
HYPER=kvm
;;
vmserver|vmdk)
FORMAT=vmdk
QFORMAT=vmdk
HYPER=vmserver
;;
vbox|vdi) FORMAT=vdi
QFORMAT=vdi
HYPER=kvm
;;
vhd|vpc) FORMAT=vhd
QFORMAT=vpc
HYPER=kvm
;;
xen) FORMAT=raw
QFORMAT=raw
HYPER=xen
;;
raw) FORMAT=raw
QFORMAT=raw
HYPER=kvm
;;
pass) ;;
*) echo "Unknown format: $FORMAT"
usage
esac
case $RELEASE in
natty) ;;
maverick) ;;
lucid) ;;
karmic) ;;
jaunty) ;;
pass) ;;
*) echo "Unknown release: $RELEASE"
usage
;;
esac
# Install stuff if necessary
if [ -z `which vmbuilder` ]; then
sudo apt-get install ubuntu-vm-builder
fi
if [ -n "$CHROOTONLY" ]; then
# Build a chroot directory
HYPER=kvm
if [ "$MINIMAL" = 1 ]; then
ARGS="--variant=minbase"
for i in $MIN_PKGS; do
ARGS="$ARGS --addpkg=$i"
done
fi
sudo vmbuilder $HYPER ubuntu $ARGS \
--suite $RELEASE \
--only-chroot \
--chroot-dir=$CHROOTDIR \
--overwrite \
--addpkg=$MIN_PKGS \
sudo cp -p files/sources.list $CHROOTDIR/etc/apt/sources.list
sudo chroot $CHROOTDIR apt-get update
exit 0
fi
# Build the image
TMPDIR=tmp
TMPDISK=`mktemp imgXXXXXXXX`
SIZE=$[$ROOTSIZE+$SWAPSIZE+1]
dd if=/dev/null of=$TMPDISK bs=1M seek=$SIZE count=1
if [ -n "$IMAGEONLY" ]; then
# Build image from chroot
sudo vmbuilder $HYPER ubuntu $ARGS \
--existing-chroot=$CHR \
--overwrite \
--rootsize=$ROOTSIZE \
--swapsize=$SWAPSIZE \
--tmpfs - \
--raw=$TMPDISK \
else
# Do the whole shebang in one pass
ARGS="--variant=minbase"
for i in $MIN_PKGS; do
ARGS="$ARGS --addpkg=$i"
done
sudo vmbuilder $HYPER ubuntu $ARGS \
--suite $RELEASE \
--overwrite \
--rootsize=$ROOTSIZE \
--swapsize=$SWAPSIZE \
--tmpfs - \
--raw=$TMPDISK \
fi
if [ "$FORMAT" = "raw" ]; then
# Get image
mv $TMPDISK $RELEASE.$FORMAT
else
# Convert image
qemu-img convert -O $QFORMAT $TMPDISK $RELEASE.$FORMAT
rm $TMPDISK
fi
rm -rf ubuntu-$HYPER