Synnefo » Ganeti Instance Image

#!/bin/bash

# Copyright (C) 2010 Oregon State University

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

#

# This is an example script that configures, grub after installation. This

# script assumes that grub has been installed onto the image already and a

# working grub.conf exists. This is only enabled if using the tarball image

# type. 

set -e

. common.sh

debug set -x

CLEANUP=( )

trap cleanup EXIT

if [ "${IMAGE_TYPE}" != "tarball" \

        -a "${IMPORT_SCRIPT}" != "1" \

        -a "${IMAGE_TYPE}" != "dump" \

        -a -z "${INSTANCE_HV_kernel_path}" ] ; then

    log_error "Image doesn't require grub setup, skipping ..."

    exit 0

fi

if [ -z "${TARGET}" -o -d "${TARGET}" ] ; then

    log_error "Missing target directory"

    exit 1

fi

# Set disk based on type of hypervisor

disk=""

if [ "${HYPERVISOR}" = "kvm" ] ; then

  disk="vda"

else

  disk="xda"

fi

# make /dev/$disk

mknod ${TARGET}/dev/${disk} b $(stat -L -c "0x%t 0x%T" $BLOCKDEV)

CLEANUP+=("rm -f ${TARGET}/dev/$disk")

# make /dev/${disk}1

mknod ${TARGET}/dev/${disk}1 b $(stat -L -c "0x%t 0x%T" $BOOT_DEV)

CLEANUP+=("rm -f ${TARGET}/dev/${disk}1")

# make /dev/${disk}1

mknod ${TARGET}/dev/${disk}3 b $(stat -L -c "0x%t 0x%T" $ROOT_DEV)

CLEANUP+=("rm -f ${TARGET}/dev/${disk}3")

# create device.map

cat > "${TARGET}/boot/grub/device.map" <<EOF

(hd0) /dev/${disk}

EOF

# install grub to the block device

chroot ${TARGET} grub --batch --no-floppy --device-map=/boot/grub/device.map <<EOF

root (hd0,0)

setup (hd0)

quit

EOF

# execute cleanups

cleanup

trap - EXIT

exit 0