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

# 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

if [ "$PARTITION_STYLE" = "none" ]; then

  filesystem_dev=$blockdev

elif [ "$PARTITION_STYLE" = "msdos" ]; then

  # Create one big partition, and make it bootable

  format_disk0 $blockdev

  filesystem_dev=$(map_disk0 $blockdev)

  CLEANUP+=("unmap_disk0 $blockdev")

else

  echo "Unknown partition style $PARTITION_STYLE"

  exit 1

fi

mke2fs -Fjq $filesystem_dev

root_uuid=$($VOL_ID $filesystem_dev )

if [ -n "$swapdev" ]; then

  mkswap $swapdev

  swap_uuid=$($VOL_ID $swapdev || true )

fi

TMPDIR=`mktemp -d` || exit 1

CLEANUP+=("rmdir $TMPDIR")

mount $filesystem_dev $TMPDIR

CLEANUP+=("umount $TMPDIR")

( cd $TMPDIR; restore -r -y -f - )

rm -f $TMPDIR/etc/udev/rules.d/z*_persistent-net.rules

# Fix /etc/fstab with the new volumes' UUIDs

if [ -e $TMPDIR/etc/fstab ]; then

  ROOT_LINE="UUID=$root_uuid  /     ext3  defaults  0  1"

  if [ -n "$swapdev" -a -n "$swap_uuid" ]; then

    SWAP_LINE="UUID=$swap_uuid  swap  swap  defaults  0  0"

    cat $TMPDIR/etc/fstab | \

      sed -re "s#^(/dev/sda|UUID=[a-f0-9-]+)\s+/\s+.*\$#$ROOT_LINE#" \

          -e "s#^(/dev/sdb|UUID=[a-f0-9-]+)\s+swap\s+.*\$#$SWAP_LINE#" \

      > $TMPDIR/etc/fstab.new

  else

    cat $TMPDIR/etc/fstab | \

      sed -re "s#^(/dev/sda|UUID=[a-f0-9-]+)\s+/\s+.*\$#$ROOT_LINE#" \

      > $TMPDIR/etc/fstab.new

  fi

  mv $TMPDIR/etc/fstab.new  $TMPDIR/etc/fstab

fi

# execute cleanups

cleanup

trap - EXIT

exit 0