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:		FixPartitionTable

# RunBefore:		FilesystemResizeUnmounted

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

### END TASK INFO

set -e

. "@commondir@/common.sh"

# 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 [ $(get_partition_count "$SNF_IMAGE_DEV") -eq 0 ]; then

    log_error "Device: \`${SNF_IMAGE_DEV}' does not contain any partition"

fi

retval=$(get_last_partition "$SNF_IMAGE_DEV")

id=$(echo $retval | cut -d: -f1)

pstart=$(echo $retval | cut -d: -f2)

pend=$(echo $retval | cut -d: -f3)

ptype=$(echo $retval | cut -d: -f5)

if [ $id -gt 4 ]; then

    log_error "We don't support logical volumes"

fi

if [ x"$ptype" = "x" ]; then

    # Don't know how to handle this

    warn "Last partition with id: \`$id' is empty or has unknown filesystem"

    warn "I won't resize the partition"

    exit 0

fi

new_pend=$(get_last_free_sector "$SNF_IMAGE_DEV")

if [ -z "$new_pend" ] ; then

    # Nothing to do

    exit 0

fi

# Extend the partition

$PARTED -s -m "$SNF_IMAGE_DEV" rm "$id"

$PARTED -s -m "$SNF_IMAGE_DEV" mkpart primary "$ptype" "$pstart" "$new_pend"

# Inform the kernel about the changes

partprobe "$SNF_IMAGE_DEV"

exit 0

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