| 1 | #!/bin/bash
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| 2 | #
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| 3 | # $Id: analyze-my-lvm 2534 2010-01-08 15:01:31Z bruno $
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| 4 | #
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| 5 |
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| 6 | Die() {
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| 7 | echo "$1" >> /dev/stderr
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| 8 | exit -1
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| 9 | }
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| 10 |
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| 11 |
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| 12 |
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| 13 | GetValueFromField() {
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| 14 | local res
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| 15 | sed s/' '/~/ "$1" | tr -s ' ' ' ' | sed s/'~ '/'~'/ | grep -i "$2~" | cut -d'~' -f2,3,4,5 | tr '~' ' ' | gawk '{ if ($2=="MB") {printf "%dm",$1;} else if ($2=="KB") {printf "%dk",$1;} else if ($2=="GB") {printf "%fg",$1;} else {print $0;};}'
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| 16 | }
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| 17 |
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| 18 |
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| 19 | GetLastBit() {
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| 20 | local i res
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| 21 | i=20
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| 22 | res=""
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| 23 | while [ ! "$res" ] ; do
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| 24 | i=$(($i-1))
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| 25 | res=`echo "$1" | cut -d'/' -f$i`
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| 26 | done
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| 27 | echo "$res"
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| 28 | }
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| 29 |
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| 30 |
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| 31 | ProcessLogicalVolume() {
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| 32 | local LV_full_string fname logical_volume volume_group device
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| 33 | LV_full_string=$1
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| 34 | if [ ! -e "$1" ]; then
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| 35 | echo "WARNING - cannot find LV file $1" | tee -a /dev/stderr
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| 36 | return
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| 37 | fi
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| 38 | volume_group=`echo "$LV_full_string" | cut -d'/' -f3`
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| 39 | logical_volume=`echo "$LV_full_string" | cut -d'/' -f4`
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| 40 | if [ $lvmversion = 2 ]; then
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| 41 | device=$LV_full_string
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| 42 | params=`GenerateLvcreateParameters $device`
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| 43 | else
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| 44 | fname=/proc/lvm/VGs/$volume_group/LVs/$logical_volume
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| 45 | if [ ! -e "$fname" ] ; then
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| 46 | echo "WARNING - cannot find $volume_group's $logical_volume LV file" | tee -a /dev/stderr
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| 47 | return
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| 48 | else
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| 49 | device=`GetValueFromField $fname "name:"`
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| 50 | params=`GenerateLvcreateParameters $device`
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| 51 | fi
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| 52 | fi
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| 53 | # Do not process LV whose VG are excluded
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| 54 | if ["`grep $volume_group $MINDI_TMP/excludedvgs`" = "" ]; then
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| 55 | echo "# $LVMCMD lvcreate$params -n $logical_volume $volume_group"
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| 56 | fi
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| 57 | rm -f $MINDI_TMP/excludedvgs
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| 58 | }
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| 59 |
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| 60 |
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| 61 | GenerateLvcreateParameters() {
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| 62 | local device stripes stripesize device fname allocation output readahead
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| 63 | fname=$MINDI_TMP/PLF.$$.txt
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| 64 | device=$1
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| 65 | output=""
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| 66 | $LVMCMD lvdisplay $device > $fname
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| 67 | stripes=`GetValueFromField $fname "Stripes"`
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| 68 | stripesize=`GetValueFromField $fname "Stripe size (MByte)"`m
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| 69 | [ "$stripesize" = "m" ] && stripesize=`GetValueFromField $fname "Stripe size (KByte)"`k
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| 70 | [ "$stripesize" = "k" ] && stripesize=""
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| 71 | allocation=`GetValueFromField $fname "LV Size"`
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| 72 | [ ! "`echo "$allocation" | grep "[k,m,g]"`" ] && allocation="$allocation"m
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| 73 | if echo "$allocation" | grep -E '^.*g$' > /dev/null 2> /dev/null ; then
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| 74 | val=`echo "$allocation" | sed s/g//`
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| 75 | allocation=`echo "$val" | awk '{c=$1; printf "%d", c*1024;}'`m
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| 76 | fi
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| 77 | readahead=`GetValueFromField $fname "Read ahead sectors"`
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| 78 | rm -f $fname
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| 79 | [ "$stripes" ] && output="$output -i $stripes"
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| 80 | [ "$stripesize" ] && output="$output -I $stripesize"
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| 81 | [ "$allocation" ] && output="$output -L $allocation"
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| 82 | [ "$readahead" ] && output="$output -r $readahead"
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| 83 | echo "$output"
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| 84 | }
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| 85 |
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| 86 |
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| 87 |
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| 88 | GenerateVgcreateParameters() {
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| 89 | local current_VG device fname incoming VG_info_file max_logical_volumes max_physical_volumes physical_extent_size output blanklines
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| 90 | current_VG=$1
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| 91 | VG_info_file=$MINDI_TMP/$$.vg-info.txt
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| 92 | # We use cat here as a way to avoid SElinux to prevent us from writing in $VG_info_file
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| 93 | $LVMCMD vgdisplay $current_VG | cat > $VG_info_file
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| 94 | max_logical_volumes=`GetValueFromField "$VG_info_file" "MAX LV"`
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| 95 | [ $max_logical_volumes -ge 256 ] && max_logical_volumes=255
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| 96 | max_physical_volumes=`GetValueFromField "$VG_info_file" "MAX PV"`
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| 97 | [ $max_physical_volumes -ge 256 ] && max_physical_volumes=255
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| 98 | physical_extent_size=`GetValueFromField "$VG_info_file" "PE Size"`
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| 99 | output=""
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| 100 | [ "$max_logical_volumes" ] && output="$output -l $max_logical_volumes"
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| 101 | [ "$max_physical_volumes" ] && output="$output -p $max_physical_volumes"
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| 102 | [ "$physical_extent_size" ] && output="$output -s $physical_extent_size"
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| 103 | echo "$output"
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| 104 | rm -f $VG_info_file
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| 105 | }
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| 106 |
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| 107 |
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| 108 |
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| 109 |
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| 110 |
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| 111 | ProcessVolumeGroup() {
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| 112 | local current_VG physical_volumes i list_of_devices VG_params
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| 113 | current_VG=$1
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| 114 | if [ $lvmversion = 2 ]; then
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| 115 | VG_params=`GenerateVgcreateParameters $current_VG`
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| 116 | list_of_devices=`$LVMCMD pvs | grep " $current_VG " | awk '{print $1}'`
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| 117 | else
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| 118 | info_file=/proc/lvm/VGs/$current_VG/group
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| 119 | physical_volumes=`ls /proc/lvm/VGs/$current_VG/PVs`
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| 120 | VG_params=`GenerateVgcreateParameters $current_VG`
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| 121 | list_of_devices=""
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| 122 | for i in $physical_volumes ; do
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| 123 | fname=/proc/lvm/VGs/$current_VG/PVs/$i
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| 124 | device=`GetValueFromField $fname "name:"`
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| 125 | list_of_devices="$list_of_devices $device"
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| 126 | done
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| 127 | fi
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| 128 | l=""
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| 129 | if [ -f /etc/multipath.conf ]; then
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| 130 | # If multipath check which type of devidec are given, mpath prefered
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| 131 | for d in $list_of_devices; do
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| 132 | l="$l `GiveMapperOfdm $d`"
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| 133 | done
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| 134 | list_of_devices=$l
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| 135 | fi
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| 136 |
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| 137 | rm -f $MINDI_TMP/excludedvgs
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| 138 | if [ "$EXCLUDE_DEVS" ] ; then
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| 139 | for ed in $EXCLUDE_DEVS ; do
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| 140 | if [ "`echo " $list_of_devices" | grep " $ed"`" != "" ]; then
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| 141 | echo $current_VG >> $MINDI_TMP/excludedvgs
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| 142 | return
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| 143 | fi
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| 144 | done
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| 145 | fi
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| 146 | echo "# $LVMCMD vgcreate $current_VG$VG_params $list_of_devices"
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| 147 | echo "# $LVMCMD vgchange -a y $current_VG"
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| 148 | }
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| 149 |
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| 150 |
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| 151 |
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| 152 | ListAllPhysicalVolumes() {
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| 153 | if [ $lvmversion = 2 ]; then
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| 154 | $LVMCMD pvscan 2> /dev/null | grep 'PV' | awk '{print $2}' > $MINDI_TMP/pv.tmp
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| 155 | else
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| 156 | pvscan 2> /dev/null | grep '"' | cut -d'"' -f2 > $MINDI_TMP/pv.tmp
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| 157 | fi
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| 158 |
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| 159 | rm -f $MINDI_TMP/pv.tmp2
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| 160 | for d in `cat $MINDI_TMP/pv.tmp`; do
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| 161 | # Skip devices excluded, coming from mondoarchive
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| 162 | skip=0
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| 163 | if [ "$EXCLUDE_DEVS" ] ; then
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| 164 | for ed in $EXCLUDE_DEVS ; do
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| 165 | if [ "`echo " $d " | grep " $ed"`" != "" ]; then
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| 166 | skip=1
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| 167 | continue
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| 168 | fi
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| 169 | done
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| 170 | fi
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| 171 | if [ $skip -eq 1 ]; then
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| 172 | continue
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| 173 | fi
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| 174 | echo $d >> $MINDI_TMP/pv.tmp2
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| 175 | done
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| 176 |
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| 177 | if [ -f /etc/multipath.conf ]; then
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| 178 | # If multipath check which type of devidec are given, mpath prefered
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| 179 | for d in `cat $MINDI_TMP/pv.tmp2`; do
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| 180 | skip=0
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| 181 | if [ "$EXCLUDE_DEVS" ] ; then
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| 182 | for ed in $EXCLUDE_DEVS ; do
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| 183 | if [ "`echo " $d " | grep " $ed"`" != "" ]; then
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| 184 | skip=1
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| 185 | continue
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| 186 | fi
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| 187 | done
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| 188 | fi
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| 189 | if [ $skip -eq 1 ]; then
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| 190 | continue
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| 191 | fi
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| 192 | GiveMapperOfdm $d
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| 193 | done
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| 194 | else
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| 195 | cat $MINDI_TMP/pv.tmp2
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| 196 | fi
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| 197 | rm -f $MINDI_TMP/pv.tmp $MINDI_TMP/pv.tmp2
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| 198 | }
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| 199 |
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| 200 |
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| 201 | ListAllVolumeGroups() {
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| 202 | $LVMCMD vgdisplay 2> /dev/null | awk '/^ *VG Name/ {print $3;}'
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| 203 | }
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| 204 |
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| 205 | GiveMapperOfdm () {
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| 206 |
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| 207 | major=`stat -c "%t" $1`
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| 208 | minor=`stat -c "%T" $1`
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| 209 |
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| 210 | for i in `ls /dev/mapper/*`; do
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| 211 | mj=`stat -c "%t" $i`
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| 212 | mn=`stat -c "%T" $i`
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| 213 | if [ "$mj" = "$major" ] && [ "$mn" = "$minor" ]; then
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| 214 | echo "$i"
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| 215 | return
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| 216 | fi
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| 217 | done
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| 218 | echo $1
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| 219 | }
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| 220 |
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| 221 |
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| 222 | ListLvmDrivesAndPartitions() {
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| 223 | # We get partitions in this loop not devices
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| 224 | for d in `$LVMCMD vgdisplay -v 2> /dev/null | grep "PV Name" | sed 's/(#)//' | awk '{print $3}'`; do
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| 225 | # If multipath check which type of devices are given, mpath prefered
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| 226 | if [ -f /etc/multipath.conf ]; then
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| 227 | i=`GiveMapperOfdm $d`
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| 228 | echo $i
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| 229 | else
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| 230 | echo $d
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| 231 | fi
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| 232 | done
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| 233 | }
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| 234 |
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| 235 |
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| 236 |
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| 237 | PrettifyList() {
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| 238 | local i
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| 239 | echo -en "$1"
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| 240 | for i in $2 ; do
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| 241 | echo -en "$i "
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| 242 | done
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| 243 | echo ""
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| 244 | }
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| 245 |
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| 246 |
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| 247 | ListAllLogicalVolumes() {
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| 248 | if [ $lvmversion = 2 ]; then
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| 249 | $LVMCMD lvscan 2> /dev/null | grep "'" | grep -iw "ACTIVE" | cut -d"'" -f2
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| 250 | else
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| 251 | lvscan 2> /dev/null | grep '"' | grep -iw "ACTIVE" | cut -d'"' -f2
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| 252 | fi
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| 253 | }
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| 254 |
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| 255 |
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| 256 |
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| 257 | WriteShutdownScript() {
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| 258 | local i
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| 259 | echo ""
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| 260 | echo "Finally, to shut down and delete the volumes, do this:-"
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| 261 | for i in `ListAllLogicalVolumes` ; do
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| 262 | echo "($LVMCMD lvremove -f $i)"
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| 263 | done
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| 264 | for i in `ListAllVolumeGroups` ; do
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| 265 | echo "($LVMCMD vgchange -a n $i)"
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| 266 | done
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| 267 | for i in `ListAllVolumeGroups` ; do
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| 268 | echo "($LVMCMD vgremove $i)"
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| 269 | done
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| 270 | if [ $lvmversion = 2 ]; then
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| 271 | echo "(rmmod dm-mod & rmmod dm_mod & )"
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| 272 | else
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| 273 | echo "(rmmod lvm-mod)"
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| 274 | fi
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| 275 | }
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| 276 |
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| 277 |
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| 278 |
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| 279 | # -------------------------------- main -----------------------------------
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| 280 | which lvmdiskscan 2>/dev/null 2>&1 || Die "lvmdiskscan not found. Won't handle LVM."
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| 281 | if [ -e "/proc/lvm/global" ] && [ "`tr -s '\t' ' ' < /proc/lvm/global | grep "0 VGs 0 PVs 0 LVs"`" != "" ]; then
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| 282 | exit 1
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| 283 | fi
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| 284 |
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| 285 | # Older lvmdiskscan use --help, newer --version
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| 286 | lvmopt="--help"
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| 287 | lvmdiskscan $lvmopt 2>&1 | grep -q -- "--version"
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| 288 | if [ $? -eq 0 ]; then
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| 289 | lvmopt="--version"
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| 290 | fi
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| 291 |
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| 292 |
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| 293 | lvmversion=`lvmdiskscan --help 2>&1 |
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| 294 | grep -E "Logical Volume Manager|LVM version:" |
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| 295 | cut -d: -f2 | cut -d. -f1 |
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| 296 | awk '{print $NF}' |
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| 297 | sed -e 's/ //g'`
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| 298 |
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| 299 | if which lvm 2>/dev/null; then
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| 300 | version=`lvm version | grep "LVM version" | awk '{print $3}'`
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| 301 | i="`echo "$version" | cut -d'.' -f1`"
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| 302 | echo "i=$i"
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| 303 | if [ "$i" -ge "2" ] ; then
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| 304 | lvmversion=2
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| 305 | fi
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| 306 | fi
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| 307 |
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| 308 | if [ $lvmversion = 2 ]; then
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| 309 | echo "LVM version >= 2.0 found."
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| 310 | LVMCMD="lvm"
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| 311 | else
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| 312 | LVMCMD=""
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| 313 | fi
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| 314 |
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| 315 | all_lvm_drives_and_partitions=`ListLvmDrivesAndPartitions`
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| 316 | echo "Just before you extrapolate mountlist to include RAID partitions,"
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| 317 | echo "extrapolate it to include the following LVM drives and partitions:-"
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| 318 | PrettifyList ">>>>> " "$all_lvm_drives_and_partitions"
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| 319 | echo "To get started, type:-"
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| 320 | if [ $lvmversion = 2 ]; then
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| 321 | echo "(insmod dm-mod)"
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| 322 | echo "(insmod dm_mod)"
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| 323 | else
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| 324 | echo "(insmod lvm-mod)"
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| 325 | fi
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| 326 | echo "# $LVMCMD vgchange -an"
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| 327 | for i in `ListAllPhysicalVolumes` ; do
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| 328 | echo "# echo y | $LVMCMD pvcreate -ff $i"
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| 329 | done
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| 330 | echo "# $LVMCMD vgscan"
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| 331 | echo ""
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| 332 | echo "Create and activate the VG's (volume groups)."
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| 333 | all_volume_groups=`ListAllVolumeGroups`
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| 334 | for current_VG in $all_volume_groups ; do
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| 335 | if [ $lvmversion -ne 2 ]; then
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| 336 | echo "# rm -Rf /dev/$current_VG"
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| 337 | fi
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| 338 | ProcessVolumeGroup $current_VG
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| 339 | done
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| 340 | echo ""
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| 341 | echo "Finally, create the LV's (logical volumes)."
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| 342 | all_logical_volumes=`ListAllLogicalVolumes`
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| 343 | for current_LV in $all_logical_volumes ; do
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| 344 | ProcessLogicalVolume $current_LV
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| 345 | done
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| 346 | echo ""
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| 347 | echo "# $LVMCMD vgscan"
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| 348 | echo "Now you may format the LV's:-"
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| 349 | for i in `ListAllLogicalVolumes` ; do
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| 350 | echo "(mkfs -t foo $i or something like that)"
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| 351 | done
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| 352 | WriteShutdownScript
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| 353 | exit 0
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| 354 |
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| 355 |
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| 356 |
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