Synnefo » snf-image

#! /bin/bash

# Copyright (C) 2011 GRNET S.A. 

#

# 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.

### BEGIN TASK INFO

# Provides:		FilesystemResizeUnmounted

# RunBefore:		MountImage

# RunAfter:             FixPartitionTable

# Short-Description:	Resize filesystem to use all the available space

### END TASK INFO

set -e

. "@commondir@/common.sh"

trap task_cleanup EXIT

report_task_start

# Check if the task should be prevented from running.

check_if_excluded

if [ ! -b "$SNF_IMAGE_DEV" ]; then

    log_error "Device file:\`${SNF_IMAGE_DEV}' is not a block device"

fi

if [ "$SNF_IMAGE_PROPERTY_OSFAMILY" = openbsd ]; then

   part="${SNF_IMAGE_DEV}$(@scriptsdir@/disklabel.py --print-last-linux "$SNF_IMAGE_DEV")"

   # If this fails the script will stop

   $DUMPFS_OPENBSD "$part" > /dev/null

   $GROWFS_OPENBSD -y "$part"

   exit 0

fi

if [ "$SNF_IMAGE_PROPERTY_OSFAMILY" = netbsd ]; then

    warn "File system resizing currently not supported for NetBSD"

    exit 0

fi

if [ -z "$SNF_IMAGE_RESIZE_PART" ]; then

    warn "No partition chosen for resize"

    exit 0

fi

if [ "x$SNF_IMAGE_PROPERTY_DO_SYNC" = "xyes" ]; then

    unset EATMYDATA

fi

table=$(get_partition_table "$SNF_IMAGE_DEV")

partition=$(get_partition_by_num "$table" "$SNF_IMAGE_RESIZE_PART")

id=$(cut -d: -f1 <<< "$partition")

ptype=$(cut -d: -f5 <<< "$partition")

device="${SNF_IMAGE_DEV}${id}"

if [[ "$ptype" == ext[234] ]]; then

    state=$($TUNE2FS -l "$device" | grep ^Filesystem\ state: | cut -d: -f2);

    state=$(echo $state) #trim the value

    # We force a filesystem resize here if the file system is clean, even if

    # resize2fs complains. By default resize2fs will refuse to resize a file

    # system that has been mounted after the last fs check, but since we are

    # sure the file system is clean it's safe enough to bypass this.

    if [ "$state" = "clean" ]; then

        $EATMYDATA $RESIZE2FS -f "$device"

    else

        log_error "The file system state of partition: \`$device' " \

            " is not clean (state = $state)"

    fi

elif [[ "$ptype" == "freebsd-ufs" ]]; then

    $GROWFS_UFS -y "$device"

else

    warn "Don't know how to resize partition \`$id' with file system \`$ptype'."

fi

exit 0

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