| 1 | #!/bin/sh
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| 2 | #
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| 3 | # $Id: mr-label-partitions-as-necessary 3732 2019-11-18 00:43:47Z bruno $
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| 4 | #
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| 5 | ############################################
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| 6 |
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| 7 |
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| 8 | read_partition_line() {
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| 9 | local label mountpt command format device d m dev
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| 10 |
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| 11 | dev=`echo "$1" | awk '{print $1}'`
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| 12 | d=`echo "$dev" | cut -c1`
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| 13 | format=`echo "$1" | awk '{print $3}'`
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| 14 | label=`echo "$dev" | cut -s -d'=' -f2`
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| 15 | if [ "$d" = "/" ] && [ "$label" = "" ]; then
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| 16 | m=`echo "$1" | awk '{print $2}'`
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| 17 | # We force UUID even if nothing in fstab as some new distro like RHEL7 rely on it
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| 18 | [ "$format" = "reiserfs" ] && opttun="-u" || opttun="-U"
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| 19 | label=`awk '{print $2,$5}' $mountlist | grep -E "^$m " | awk '{print $2}'`
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| 20 | else
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| 21 | if [ "`echo "$1" | grep -E 'LABEL='`" != "" ] ; then
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| 22 | [ "$format" = "reiserfs" ] && opttun="-l" || opttun="-L"
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| 23 | elif [ "`echo "$1" | grep -E 'UUID='`" != "" ] ; then
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| 24 | [ "$format" = "reiserfs" ] && opttun="-u" || opttun="-U"
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| 25 | else
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| 26 | LogIt "Nothing to do on $1"
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| 27 | return
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| 28 | fi
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| 29 | fi
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| 30 | mountpt=`awk '{print $1,$5}' $mountlist | grep " $label$" | awk '{print $1}'`
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| 31 |
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| 32 | if [ ! "$mountpt" ] ; then
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| 33 | LogIt "Not labeling anything as ($label) because ($mountpt) is not a mountpoint"
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| 34 | elif [ ! "$label" ] ; then
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| 35 | LogIt "Not labeling ($mountpt) as anything because ($label) is not a label/uuid"
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| 36 | else
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| 37 | if [ "$format" = "ext2" ] || [ "$format" = "ext3" ] || [ "$format" = "ext4" ]; then
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| 38 | if [ "$format" = "ext4" ] && [ -x "/sbin/tune4fs" ]; then
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| 39 | command="/sbin/tune4fs $opttun $label $mountpt"
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| 40 | else
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| 41 | command="tune2fs $opttun $label $mountpt"
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| 42 | fi
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| 43 | LogIt "Running $command"
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| 44 | $command
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| 45 | elif [ "$format" = "reiserfs" ]; then
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| 46 | command="reiserfstune $opttun $label $mountpt"
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| 47 | LogIt "Running $command"
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| 48 | $command
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| 49 | elif [ "$format" = "btrfs" ]; then
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| 50 | echo "$1" | awk '{print $4}' | grep -q 'subvol='
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| 51 | if [ $? -eq 0 ]; then
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| 52 | LogIt "Nothing to do on btrfs subvol"
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| 53 | return
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| 54 | fi
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| 55 | if [ "$opttun" = "-U" ]; then
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| 56 | # Also see https://btrfs.wiki.kernel.org/index.php/Project_ideas#Filesystem_UUID_change_-_off-line
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| 57 | device=`awk '{print $1,$5}' $mountlist | grep -E " $label" | awk '{print $1}'`
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| 58 | command="btrfstune -f $opttun $label $device"
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| 59 | else
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| 60 | command="btrfs filesystem label $mountpt $label"
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| 61 | fi
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| 62 | LogIt "Running $command"
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| 63 | $command
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| 64 | elif [ "$format" = "xfs" ]; then
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| 65 | command="xfs_admin $opttun $label $mountpt"
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| 66 | LogIt "Running $command"
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| 67 | $command
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| 68 | elif [ "$format" = "fat" ] || [ "$format" = "vfat" ]; then
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| 69 | if [ "$opttun" = "-U" ]; then
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| 70 | if [ -x "/usr/bin/mr-label" ]; then
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| 71 | command="/usr/bin/mr-label -U $label $mountpt"
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| 72 | LogIt "Running $command"
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| 73 | $command
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| 74 | else
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| 75 | LogIt "No command available to update a UUID of a FAT/VFAT FS"
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| 76 | fi
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| 77 | else
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| 78 | if [ -x "/usr/sbin/dosfslabel" ]; then
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| 79 | command="/usr/sbin/dosfslabel $mountpt $label"
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| 80 | LogIt "Running $command"
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| 81 | $command
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| 82 | else
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| 83 | LogIt "No dosfslabel command available to label a FAT/VFAT FS"
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| 84 | fi
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| 85 | fi
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| 86 | elif [ "$format" = "swap" ] ; then
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| 87 | if [ "$opttun" = "-U" ]; then
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| 88 | typelabel="UUID"
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| 89 | else
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| 90 | typelabel="Label"
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| 91 | fi
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| 92 | if [ -x "/sbin/swaplabel" ]; then
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| 93 | # Better choice
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| 94 | command="/sbin/swaplabel $opttun $label $mountpt"
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| 95 | else
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| 96 | if [ "$opttun" = "-U" ]; then
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| 97 | LogIt "Really running dd conv=notrunc of=$mountpt obs=1 seek=1036"
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| 98 | echo -n "$label" | perl -ne 's/-//g;chomp;print pack "H*",$_' | dd conv=notrunc "of=$mountpt" obs=1 seek=1036
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| 99 | command=/bin/true
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| 100 | else
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| 101 | command="mkswap -f $opttun $label $mountpt"
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| 102 | fi
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| 103 | fi
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| 104 | LogIt "Creating $typelabel $label on swap partition $mountpt"
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| 105 | LogIt "Running $command"
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| 106 | $command
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| 107 | else
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| 108 | LogIt "I am NOT going to run tune2|4fs/reiserfstune: the partition is format '$format', which doesn't like tune2|4fs/reiserfstune anyway"
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| 109 | fi
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| 110 | fi
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| 111 | }
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| 112 |
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| 113 |
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| 114 | # ---------------------------------------------
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| 115 |
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| 116 | LogIt "Identifying your drives with FS tune tool"
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| 117 | if [ "$#" -ne "1" ] ; then
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| 118 | LogIt "mr-label-partitions-as-necessary /tmp/mountlist.txt < /tmp/fstab.new" 1
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| 119 | exit 1
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| 120 | fi
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| 121 | mountlist=$1
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| 122 | noof_blank_lines=0
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| 123 | read line
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| 124 | # We end after 50 empty lines, which hopefully means we reach the end of the file
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| 125 | while [ "$noof_blank_lines" -le "50" ] ; do
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| 126 | if [ "$line" = "" ] ; then
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| 127 | noof_blank_lines=$(($noof_blank_lines+1))
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| 128 | else
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| 129 | noof_blank_lines=0
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| 130 | read_partition_line "$line"
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| 131 | fi
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| 132 | read line
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| 133 | done
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| 134 | LogIt "Labeling complete."
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| 135 | exit 0
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