source: branches/3.2/mondo/src/restore-scripts/mondo/label-partitions-as-necessary @ 3437

Last change on this file since 3437 was 3437, checked in by Bruno Cornec, 5 years ago
  • Small improvement on label-partitions-as-necessary to avoid too much code duplication
  • Property svn:keywords set to Id
  • Property svn:unix-mode set to 755
File size: 3.3 KB
Line 
1#!/bin/sh
2#
3# $Id: label-partitions-as-necessary 3437 2015-08-28 14:08:48Z bruno $
4#
5############################################
6
7
8read_partition_line() {
9    local label mountpt command format device d m
10
11    device=`echo "$1" | awk '{print $1}'`
12    d=`echo "$device" | cut -c1`
13    format=`echo "$1" | awk '{print $3}'`
14    label=`echo "$device" | cut -s -d'=' -f2`
15    if [ "$d" = "/" ] && [ "$label" = "" ]; then
16        m=`echo "$1" | awk '{print $2}'`
17        # We force UUID even if nothing in fstab as some new distro like RHEL7 rely on it
18        [ "$format" = "reiserfs" ] && opttun="-u" || opttun="-U"
19        label=`awk '{print $2,$5}' $mountlist | grep -E "^$m " | awk '{print $2}'`
20    else
21        if [ "`echo "$1" | grep -E 'LABEL='`" != "" ] ; then
22            [ "$format" = "reiserfs" ] && opttun="-l" || opttun="-L"
23        elif [ "`echo "$1" | grep -E 'UUID='`" != "" ] ; then
24            [ "$format" = "reiserfs" ] && opttun="-u" || opttun="-U"
25        else
26            LogIt "Nothing to do on $1"
27            return
28        fi
29    fi
30    mountpt=`awk '{print $1,$5}' $mountlist | grep " $label$" | awk '{print $1}'`
31
32    if [ ! "$mountpt" ] ; then
33        LogIt "Not labeling anything as ($label) because ($mountpt) is not a mountpoint"
34    elif [ ! "$label" ] ; then
35        LogIt "Not labeling ($mountpt) as anything because ($label) is not a label/uuid"
36    else
37        if [ "$format" = "ext2" ] || [ "$format" = "ext3" ] || [ "$format" = "ext4" ]; then
38            if [ "$format" = "ext4" ] && [ -x "/sbin/tune4fs" ]; then
39                command="/sbin/tune4fs $opttun $label $mountpt"
40            else
41                command="tune2fs $opttun $label $mountpt"
42            fi
43            LogIt "Running $command"
44            $command
45        elif [ "$format" = "reiserfs" ]; then
46            command="reiserfstune $opttun $label $mountpt"
47            LogIt "Running $command"
48            $command
49        elif [ "$format" = "btrfs" ]; then
50            # Also see https://btrfs.wiki.kernel.org/index.php/Project_ideas#Filesystem_UUID_change_-_off-line
51            command="btrfs filesystem label $mountpt $label"
52            LogIt "Running $command"
53            $command
54        elif [ "$format" = "xfs" ]; then
55            command="xfs_admin $opttun $label $mountpt"
56            LogIt "Running $command"
57            $command
58        elif [ "$format" = "swap" ] ; then
59            if [ "$opttun" = "-U" ]; then
60                typelabel="UUID"
61            else
62                typelabel="Label"
63            fi
64            if [ -x "/sbin/swaplabel" ]; then
65                # Better choice
66                command="/sbin/swaplabel $opttun $label $mountpt"
67            else
68                if [ "$opttun" = "-U" ]; then
69                    LogIt "Really running dd conv=notrunc of=$mountpt obs=1 seek=1036"
70                    echo -n "$label" | perl -ne 's/-//g;chomp;print pack "H*",$_' | dd conv=notrunc "of=$mountpt" obs=1 seek=1036
71                    command=/bin/true
72                else
73                    command="mkswap -f $opttun $label $mountpt"
74                fi
75            fi
76            LogIt "Creating $typelabel $label on swap partition $mountpt"
77            LogIt "Running $command"
78            $command
79        else
80            LogIt "I am NOT going to run tune2|4fs/reiserfstune: the partition is format '$format', which doesn't like tune2|4fs/reiserfstune anyway"
81        fi
82    fi
83}
84
85
86# ---------------------------------------------
87
88LogIt "Identifying your drives with FS tune tool"
89if [ "$#" -ne "1" ] ; then
90    LogIt "label-partitions-as-necessary /tmp/mountlist.txt < /tmp/fstab.new" 1
91    exit 1
92fi
93mountlist=$1
94noof_blank_lines=0
95read line
96# We end after 50 empty lines, which hopefully means we reach the end of the file
97while [ "$noof_blank_lines" -le "50" ] ; do
98    if [ "$line" = "" ] ; then
99        noof_blank_lines=$(($noof_blank_lines+1))
100    else
101        noof_blank_lines=0
102        read_partition_line "$line"
103    fi
104    read line
105done
106LogIt "Labeling complete."
107exit 0
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