Synnefo » Ganeti Instance Image

#!/bin/bash

# Copyright (C) 2007, 2008, 2009 Google Inc.

#

# 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.

set -e

. common.sh

IMAGE_FILE="$IMAGE_DIR/image-$IMAGE_NAME-$ARCH.tar.gz"

if [ "$CDINSTALL" = "no" ] ; then

    # If the target device is not a real block device we'll first losetup it.

    # This is needed for file disks.

    if [ ! -b $blockdev ]; then

      ORIGINAL_BLOCKDEV=$blockdev

      blockdev=$($LOSETUP -sf $blockdev)

      CLEANUP+=("$LOSETUP -d $blockdev")

    fi

    # Create 3 partitions, /boot, swap, & /

    format_disk0 $blockdev

    filesystem_base_dev=$(map_disk0 $blockdev)

    root_dev="${filesystem_base_dev}-3"

    boot_dev="${filesystem_base_dev}-1"

    swap_dev="${filesystem_base_dev}-2"

    CLEANUP+=("unmap_disk0 $blockdev")

    # Format /boot

    mke2fs -Fjq $boot_dev

    # Format /

    mke2fs -Fjq $root_dev

    # Format swap

    mkswap $swap_dev

    TMPDIR=`mktemp -d` || exit 1

    CLEANUP+=("rmdir $TMPDIR")

    # mount filesystems

    mount $root_dev $TMPDIR

    CLEANUP+=("umount $TMPDIR")

    $MKDIR_P $TMPDIR/boot

    mount $boot_dev $TMPDIR/boot

    CLEANUP+=("umount $TMPDIR/boot")

    if [ ! -f "$IMAGE_FILE" ] ; then

      log_error "Can't find image file: $IMAGE_FILE"

      exit 1

    fi

    # unpack image

    tar pzxf $IMAGE_FILE -C $TMPDIR

    # Set disk based on type of hypervisor

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

      disk="vda"

    else

      disk="xda"

    fi

    # make /dev/$disk

    mknod $TMPDIR/dev/$disk b $(stat -L -c "0x%t 0x%T" $blockdev)

    CLEANUP+=("rm -f $TMPDIR/dev/$disk")

    # make /dev/${disk}1

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

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

    # make /dev/${disk}1

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

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

    # create device.map

cat > "$TMPDIR/boot/grub/device.map" <<EOF

(hd0) /dev/$disk

EOF

    # install grub to the block device

    chroot $TMPDIR grub --batch --no-floppy --device-map=/boot/grub/device.map <<EOF

root (hd0,0)

setup (hd0)

quit

EOF 

    RUN_PARTS=`which run-parts`

    if [ -n "$RUN_PARTS" -a -n "$CUSTOMIZE_DIR" -a -d "$CUSTOMIZE_DIR" ]; then

      TARGET=$TMPDIR

      BLOCKDEV=$blockdev

      FSYSDEV=$filesystem_dev

      export TARGET SUITE ARCH PARTITION_STYLE EXTRA_PKGS BLOCKDEV FSYSDEV

      $RUN_PARTS $CUSTOMIZE_DIR

    fi

fi

# execute cleanups

cleanup

trap - EXIT

exit 0