[1] | 1 | #!/bin/sh
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[276] | 2 | #
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| 3 | # $Id: analyze-my-lvm 276 2006-01-03 16:01:12Z bcornec $
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| 4 | #
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[1] | 5 |
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| 6 | #------------------------- ANALYZE-MY-LVM ----------------------- Hugo Rabson
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| 7 | # 07/14
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| 8 | # - no longer blank first 4k of /dev/mdX
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| 9 | #
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| 10 | # 06/14/2004
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| 11 | # - fixed "n >= 2.00" bug (shell doesn't handle floating points properly)
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| 12 | # - handle dm_mod as well as dm-mod
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| 13 | #
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| 14 | # 02/18/2004
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| 15 | # - nice patch to fix ListAllVolumeGroups() --- J. Richard
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| 16 | # - patch to support LVM2 by Takeru Komoriya
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| 17 | #
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| 18 | # 10/15/2003
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| 19 | # - fixed '-L'-handling to allow for floating-point gigabyte values
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| 20 | #
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| 21 | # 01/15/2003
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| 22 | # - patch (LVM) by Brian Borgeson
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| 23 | #
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| 24 | # 12/10/2002
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| 25 | # - patch by Benjamin Mampaey
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| 26 | #
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| 27 | # 09/05/2002
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| 28 | # - additional patch by Ralph Gruwe
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| 29 | #
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| 30 | # 08/30/2002
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| 31 | # - modified by Ralph Gruwe
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| 32 | #
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| 33 | # 10/01/2001
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| 34 | # - last modified by Hugo :)
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| 35 | #------------------------------------------------------------------------------
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| 36 |
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| 37 | Die() {
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| 38 | echo "$1" >> /dev/stderr
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| 39 | exit 1
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| 40 | }
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| 41 |
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| 42 |
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| 43 |
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| 44 | GetValueFromField() {
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| 45 | local res
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[276] | 46 | sed s/' '/~/ "$1" | tr -s ' ' ' ' | sed s/'~ '/'~'/ | grep -i "$2~" | cut -d'~' -f2,3,4,5 | tr '~' ' ' | gawk '{ if ($2=="MB") {printf "%sm",$1;} else if ($2=="KB") {printf "%sk",$1;} else if ($2=="GB") {printf "%sg",$1;} else {print $0;};}'
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[1] | 47 | }
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| 48 |
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| 49 |
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| 50 | GetLastBit() {
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| 51 | local i res
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| 52 | i=20
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| 53 | res=""
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| 54 | while [ ! "$res" ] ; do
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| 55 | i=$(($i-1))
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| 56 | res=`echo "$1" | cut -d'/' -f$i`
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| 57 | done
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| 58 | echo "$res"
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| 59 | }
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| 60 |
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| 61 |
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| 62 | ProcessLogicalVolume() {
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| 63 | local LV_full_string fname logical_volume volume_group device
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| 64 | LV_full_string=$1
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| 65 | [ ! -e "$1" ] && Die "Cannot find LV file $1"
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| 66 | volume_group=`echo "$LV_full_string" | cut -d'/' -f3`
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| 67 | logical_volume=`echo "$LV_full_string" | cut -d'/' -f4`
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| 68 | if [ $lvmversion = 2 ]; then
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| 69 | device=$LV_full_string
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| 70 | params=`GenerateLvcreateParameters $device`
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| 71 | echo "# lvm lvcreate$params -n $logical_volume $volume_group"
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| 72 | else
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| 73 | fname=/proc/lvm/VGs/$volume_group/LVs/$logical_volume
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| 74 | if [ ! -e "$fname" ] ; then
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| 75 | echo "Warning - cannot find $volume_group's $logical_volume LV file"
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| 76 | else
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| 77 | device=`GetValueFromField $fname "name:"`
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| 78 | params=`GenerateLvcreateParameters $device`
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| 79 | echo "# lvcreate$params -n $logical_volume $volume_group"
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| 80 | fi
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| 81 | fi
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| 82 | }
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| 83 |
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| 84 |
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| 85 | GenerateLvcreateParameters() {
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| 86 | local device stripes stripesize device fname allocation output readahead
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| 87 | fname=/tmp/PLF.$$.txt
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| 88 | device=$1
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| 89 | output=""
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| 90 | if [ $lvmversion = 2 ]; then
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| 91 | lvm lvdisplay $device > $fname
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| 92 | else
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| 93 | lvdisplay $device > $fname
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| 94 | fi
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| 95 | stripes=`GetValueFromField $fname "Stripes"`
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| 96 | stripesize=`GetValueFromField $fname "Stripe size (MByte)"`m
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| 97 | [ "$stripesize" = "m" ] && stripesize=`GetValueFromField $fname "Stripe size (KByte)"`k
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| 98 | [ "$stripesize" = "k" ] && stripesize=""
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| 99 | allocation=`GetValueFromField $fname "LV Size"`
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| 100 | [ ! "`echo "$allocation" | grep "[k,m,g]"`" ] && allocation="$allocation"m
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| 101 | if echo "$allocation" | grep -x ".*g" > /dev/null 2> /dev/null ; then
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| 102 | val=`echo "$allocation" | sed s/g//`
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| 103 | allocation=`echo "$val" | awk '{c=$1; printf "%d", c*1024;}'`m
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| 104 | fi
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| 105 | readahead=`GetValueFromField $fname "Read ahead sectors"`
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| 106 | rm -f $fname
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| 107 | [ "$stripes" ] && output="$output -i $stripes"
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| 108 | [ "$stripesize" ] && output="$output -I $stripesize"
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| 109 | [ "$allocation" ] && output="$output -L $allocation"
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| 110 | [ "$readahead" ] && output="$output -r $readahead"
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| 111 | echo "$output"
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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 | GenerateVgcreateParameters() {
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| 117 | local current_VG device fname incoming VG_info_file max_logical_volumes max_physical_volumes physical_extent_size output blanklines
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| 118 | current_VG=$1
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| 119 | VG_info_file=/tmp/$$.vg-info.txt
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| 120 | if [ $lvmversion = 2 ]; then
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| 121 | lvm vgdisplay $current_VG > $VG_info_file
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| 122 | else
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| 123 | vgdisplay $current_VG > $VG_info_file
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| 124 | fi
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| 125 | max_logical_volumes=`GetValueFromField "$VG_info_file" "MAX LV"`
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| 126 | [ $max_logical_volumes -ge 256 ] && max_logical_volumes=255
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| 127 | max_physical_volumes=`GetValueFromField "$VG_info_file" "MAX PV"`
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| 128 | [ $max_physical_volumes -ge 256 ] && max_physical_volumes=255
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| 129 | physical_extent_size=`GetValueFromField "$VG_info_file" "PE Size"`
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| 130 | output=""
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| 131 | [ "$max_logical_volumes" ] && output="$output -l $max_logical_volumes"
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| 132 | [ "$max_physical_volumes" ] && output="$output -p $max_physical_volumes"
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| 133 | [ "$physical_extent_size" ] && output="$output -s $physical_extent_size"
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| 134 | echo "$output"
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| 135 | rm -f $VG_info_file
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| 136 | }
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| 137 |
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| 138 |
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| 139 |
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| 140 |
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| 141 |
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| 142 | ProcessVolumeGroup() {
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| 143 | local current_VG physical_volumes i list_of_devices VG_params
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| 144 | current_VG=$1
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| 145 | if [ $lvmversion = 2 ]; then
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| 146 | VG_params=`GenerateVgcreateParameters $current_VG`
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| 147 | list_of_devices=`lvm pvs | grep "$current_VG" | awk '{print $1}'`
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| 148 | echo "# lvm vgcreate $current_VG$VG_params $list_of_devices"
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| 149 | echo "# lvm vgchange -a y $current_VG"
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| 150 | else
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| 151 | info_file=/proc/lvm/VGs/$current_VG/group
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| 152 | physical_volumes=`ls /proc/lvm/VGs/$current_VG/PVs`
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| 153 | VG_params=`GenerateVgcreateParameters $current_VG`
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| 154 | list_of_devices=""
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| 155 | for i in $physical_volumes ; do
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| 156 | fname=/proc/lvm/VGs/$current_VG/PVs/$i
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| 157 | device=`GetValueFromField $fname "name:"`
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| 158 | list_of_devices="$list_of_devices $device"
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| 159 | done
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| 160 | echo "# vgcreate $current_VG$VG_params$list_of_devices"
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| 161 | echo "# vgchange -a y $current_VG"
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| 162 | fi
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| 163 | }
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| 164 |
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| 165 |
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| 166 |
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| 167 | ListAllPhysicalVolumes() {
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| 168 | if [ $lvmversion = 2 ]; then
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| 169 | lvm pvscan 2> /dev/null | grep 'PV' | awk '{print $2}'
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| 170 | else
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| 171 | pvscan 2> /dev/null | grep '"' | cut -d'"' -f2
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| 172 | fi
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| 173 | }
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| 174 |
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| 175 |
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| 176 | ListAllVolumeGroups() {
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| 177 | if [ $lvmversion = 2 ]; then
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| 178 | lvm vgdisplay 2> /dev/null | awk '/^ *VG Name/ {print $3;}'
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| 179 | else
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| 180 | vgdisplay 2> /dev/null | awk '/^VG Name/ {print $3;}'
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| 181 | fi
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| 182 | }
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| 183 |
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| 184 |
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| 185 | ListLvmDrivesAndPartitions() {
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| 186 | if [ $lvmversion = 2 ]; then
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| 187 | lvm vgdisplay -v |grep "PV Name" | awk '{print $3}'
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| 188 | else
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| 189 | vgdisplay -v |grep "PV Name" | awk '{print $4}'
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| 190 | fi
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| 191 | }
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| 192 |
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| 193 |
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| 194 |
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| 195 | PrettifyList() {
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| 196 | local i
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| 197 | echo -en "$1"
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| 198 | for i in $2 ; do
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| 199 | echo -en "$i "
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| 200 | done
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| 201 | echo ""
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| 202 | }
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| 203 |
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| 204 |
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| 205 | ListAllLogicalVolumes() {
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| 206 | if [ $lvmversion = 2 ]; then
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| 207 | lvm lvscan | grep "'" | cut -d"'" -f2
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| 208 | else
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| 209 | lvscan | grep '"' | cut -d'"' -f2
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| 210 | fi
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| 211 | }
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| 212 |
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| 213 |
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| 214 |
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| 215 | WriteShutdownScript() {
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| 216 | local i
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| 217 | echo ""
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| 218 | echo "Finally, to shut down and delete the volumes, do this:-"
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| 219 | if [ $lvmversion = 2 ]; then
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| 220 | for i in `ListAllLogicalVolumes` ; do
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| 221 | echo "(lvm lvremove -f $i)"
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| 222 | done
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| 223 | for i in `ListAllVolumeGroups` ; do
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| 224 | echo "(lvm vgchange -a n $i)"
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| 225 | done
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| 226 | for i in `ListAllVolumeGroups` ; do
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| 227 | echo "(lvm vgremove $i)"
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| 228 | done
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| 229 | echo "(rmmod dm-mod & rmmod dm_mod & )"
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| 230 | else
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| 231 | for i in `ListAllLogicalVolumes` ; do
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| 232 | echo "(lvremove -f $i)"
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| 233 | done
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| 234 | for i in `ListAllVolumeGroups` ; do
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| 235 | echo "(vgchange -a n $i)"
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| 236 | done
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| 237 | for i in `ListAllVolumeGroups` ; do
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| 238 | echo "(vgremove $i)"
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| 239 | done
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| 240 | echo "(rmmod lvm-mod)"
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| 241 | fi
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| 242 | }
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| 243 |
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| 244 |
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| 245 |
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| 246 | # -------------------------------- main -----------------------------------
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[98] | 247 | which lvmdiskscan 2>/dev/null 2>&1 || Die "Cannot find lvmdiskscan. Are you sure you're using LVM?"
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[276] | 248 | if [ -e "/proc/lvm/global" ] && [ "`tr -s '\t' ' ' < /proc/lvm/global | grep "0 VGs 0 PVs 0 LVs"`" != "" ] ; then
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[1] | 249 | exit 0
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| 250 | fi
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| 251 |
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| 252 | # Sq-Mod ... V1 has different output. --version is not legal but version
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| 253 | # gets displayed so I guess it's ok... This should work for both.
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| 254 |
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| 255 | #lvmversion=`lvmdiskscan --version | grep "LVM version:" | cut -d: -f2 | cut -d. -f1 | sed -e 's/ //g'`
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| 256 |
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[98] | 257 | lvmversion=`lvmdiskscan --help |
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[1] | 258 | grep -E "Logical Volume Manager|LVM version:" |
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| 259 | cut -d: -f2 | cut -d. -f1 |
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| 260 | awk '{print $NF}' |
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| 261 | sed -e 's/ //g'`
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| 262 |
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[98] | 263 | if which lvm 2>/dev/null; then
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[1] | 264 | version=`lvm version | grep "LVM version" | awk '{print $3}'`
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| 265 | i="`echo "$version" | cut -d'.' -f1`"
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| 266 | echo "i=$i"
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| 267 | if [ "$i" -ge "2" ] ; then
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| 268 | # if [ $version >= "2.00" ]; then
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| 269 | lvmversion=2
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| 270 | fi
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| 271 | fi
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| 272 |
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| 273 | if [ $lvmversion = 2 ]; then
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| 274 | echo "LVM version >= 2.0 found."
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| 275 | fi
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| 276 |
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| 277 | all_lvm_drives_and_partitions=`ListLvmDrivesAndPartitions`
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| 278 | echo "Just before you extrapolate mountlist to include RAID partitions,"
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| 279 | echo "extrapolate it to include the following LVM drives and partitions:-"
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| 280 | PrettifyList ">>>>> " "$all_lvm_drives_and_partitions"
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| 281 | echo "To get started, type:-"
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| 282 | if [ $lvmversion = 2 ]; then
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| 283 | echo "(insmod dm-mod)"
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| 284 | echo "(insmod dm_mod)"
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| 285 | echo "# lvm vgchange -an"
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| 286 | else
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| 287 | echo "(insmod lvm-mod)"
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| 288 | echo "# vgchange -an"
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| 289 | fi
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| 290 | for i in `ListAllPhysicalVolumes` ; do
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| 291 | # echo "# dd if=/dev/zero of=$i bs=512 count=1"
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| 292 | if [ $lvmversion = 2 ]; then
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| 293 | echo "# echo y | lvm pvcreate -ff $i"
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| 294 | else
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| 295 | echo "# echo y | pvcreate -ff $i"
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| 296 | fi
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| 297 | done
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| 298 | if [ $lvmversion = 2 ]; then
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| 299 | echo "# lvm vgscan; echo"
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| 300 | else
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| 301 | echo "# vgscan; echo"
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| 302 | fi
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| 303 | echo ""
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| 304 | echo "Create and activate the VG's (volume groups)."
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| 305 | all_volume_groups=`ListAllVolumeGroups`
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| 306 | for current_VG in $all_volume_groups ; do
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| 307 | if [ $lvmversion -ne 2 ]; then
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| 308 | echo "# rm -Rf /dev/$current_VG"
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| 309 | fi
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| 310 | ProcessVolumeGroup $current_VG
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| 311 | done
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| 312 | echo ""
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| 313 | echo "Finally, create the LV's (logical volumes)."
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| 314 | all_logical_volumes=`ListAllLogicalVolumes`
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| 315 | for current_LV in $all_logical_volumes ; do
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| 316 | ProcessLogicalVolume $current_LV
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| 317 | done
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| 318 | echo ""
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| 319 | if [ $lvmversion = 2 ]; then
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| 320 | echo "# lvm vgscan"
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| 321 | else
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| 322 | echo "# vgscan"
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| 323 | fi
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| 324 | echo "Now you may format the LV's:-"
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| 325 | for i in `ListAllLogicalVolumes` ; do
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| 326 | echo "(mkfs -t foo $i or something like that)"
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| 327 | done
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| 328 | WriteShutdownScript
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| 329 | exit 0
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| 330 |
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| 331 |
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| 332 |
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