3 # Copyright (C) 2007 Google Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 TEMP=`getopt -o i:b:s: -n '$0' -- "$@"`
24 if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
26 # Note the quotes around `$TEMP': they are essential!
31 -i) instance=$2; shift 2;;
33 -b) blockdev=$2; shift 2;;
35 -s) swapdev=$2; shift 2;;
39 *) echo "Internal error!"; exit 1;;
42 if [ -z "$instance" -o -z "$blockdev" -o -z "$swapdev" ]; then
43 echo "Missing -i or -b or -s argument!"
47 swap_uuid=$(mkswap $swapdev | grep 'UUID' | sed -re 's/.*UUID=//')
49 root_uuid=$(dumpe2fs -h $blockdev | grep '^Filesystem UUID:' \
50 | sed -re 's/.*UUID:\s*//')
52 TMPDIR=`mktemp -d` || exit 1
53 trap "umount $TMPDIR; rmdir $TMPDIR" EXIT
55 # If it's not a block device try to mount it via loopback device.
56 # This is needed for file disks.
58 if [ ! -b $blockdev ]; then
59 MOUNT_OPTIONS="$MOUNT_OPTIONS -o loop"
61 mount $MOUNT_OPTIONS $blockdev $TMPDIR
63 ( cd $TMPDIR; restore -r -y -f - )
64 rm -f $TMPDIR/etc/udev/rules.d/z25_persistent-net.rules
66 # Fix /etc/fstab with the new volumes' UUIDs
67 if [ -e $TMPDIR/etc/fstab ]; then
68 ROOT_LINE="UUID=$root_uuid / ext3 defaults 0 1"
69 SWAP_LINE="UUID=$swap_uuid swap swap defaults 0 0"
70 cat $TMPDIR/etc/fstab | \
71 sed -re "s#^(/dev/sda|UUID=[a-f0-9-]+)\s+/\s+.*\$#$ROOT_LINE#" \
72 -re "s#^(/dev/sdb|UUID=[a-f0-9-]+)\s+swap\s+.*\$#$SWAP_LINE#" \
73 > $TMPDIR/etc/fstab.new
74 mv $TMPDIR/etc/fstab.new $TMPDIR/etc/fstab