| 1 | #!/bin/bash
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| 2 | #
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| 3 | # $Id: analyze-my-lvm 2701 2011-01-27 18:31:10Z 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 $device`
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| 51 | fi
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| 52 | fi
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| 53 |
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| 54 | # Exclude LVs member of that env var
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| 55 | if [ "$MINDI_EXCLUDE_DEVS" ] ; then
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| 56 | list_of_devices="`mindi --readalllink $LV_full_string`"
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| 57 | l=""
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| 58 | for d in $list_of_devices; do
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| 59 | l="$l `GiveMapperOfdm $d`"
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| 60 | done
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| 61 | list_of_devices="`echo $l | sort -u`"
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| 62 | for ed in $MINDI_EXCLUDE_DEVS ; do
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| 63 | if [ "`echo " $list_of_devices" | grep " $ed"`" != "" ]; then
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| 64 | echo "Not including device $LV_full_string as it was excluded"
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| 65 | return
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| 66 | fi
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| 67 | done
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| 68 | fi
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| 69 | # Do not process LV whose VG are excluded
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| 70 | if [ -f $MINDI_TMP/excludedvgs ]; then
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| 71 | if [ "`grep -x $volume_group $MINDI_TMP/excludedvgs`" != "" ]; then
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| 72 | echo "Not including LV $logical_volume as VG $volume_group was excluded"
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| 73 | return
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| 74 | fi
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| 75 | fi
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| 76 |
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| 77 | echo "# $LVMCMD lvcreate$params -n $logical_volume $volume_group"
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| 78 | }
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| 79 |
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| 80 |
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| 81 | GenerateLvcreateParameters() {
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| 82 | local device stripes stripesize device fname allocation output readahead
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| 83 | fname=$MINDI_TMP/PLF.$$.txt
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| 84 | device=$1
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| 85 | output=""
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| 86 | $LVMCMD lvdisplay $device > $fname
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| 87 | stripes=`GetValueFromField $fname "Stripes"`
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| 88 | stripesize=`GetValueFromField $fname "Stripe size (MByte)"`m
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| 89 | [ "$stripesize" = "m" ] && stripesize=`GetValueFromField $fname "Stripe size (KByte)"`k
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| 90 | [ "$stripesize" = "k" ] && stripesize=""
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| 91 | allocation=`GetValueFromField $fname "LV Size"`
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| 92 | [ ! "`echo "$allocation" | grep "[k,m,g]"`" ] && allocation="$allocation"m
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| 93 | if echo "$allocation" | grep -E '^.*g$' > /dev/null 2> /dev/null ; then
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| 94 | val=`echo "$allocation" | sed s/g//`
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| 95 | allocation=`echo "$val" | awk '{c=$1; printf "%d", c*1024;}'`m
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| 96 | fi
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| 97 | readahead=`GetValueFromField $fname "Read ahead sectors"`
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| 98 | rm -f $fname
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| 99 | [ "$stripes" ] && output="$output -i $stripes"
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| 100 | [ "$stripesize" ] && output="$output -I $stripesize"
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| 101 | [ "$allocation" ] && output="$output -L $allocation"
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| 102 | [ "$readahead" ] && output="$output -r $readahead"
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| 103 | echo "$output"
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| 104 | }
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| 105 |
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| 106 |
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| 107 |
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| 108 | GenerateVgcreateParameters() {
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| 109 | local current_VG device fname incoming VG_info_file max_logical_volumes max_physical_volumes physical_extent_size output blanklines
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| 110 | current_VG=$1
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| 111 | VG_info_file=$MINDI_TMP/$$.vg-info.txt
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| 112 | # We use cat here as a way to avoid SElinux to prevent us from writing in $VG_info_file
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| 113 | $LVMCMD vgdisplay $current_VG | cat > $VG_info_file
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| 114 | max_logical_volumes=`GetValueFromField "$VG_info_file" "MAX LV"`
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| 115 | [ $max_logical_volumes -ge 256 ] && max_logical_volumes=255
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| 116 | max_physical_volumes=`GetValueFromField "$VG_info_file" "MAX PV"`
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| 117 | [ $max_physical_volumes -ge 256 ] && max_physical_volumes=255
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| 118 | physical_extent_size=`GetValueFromField "$VG_info_file" "PE Size"`
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| 119 | output=""
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| 120 | [ "$max_logical_volumes" ] && output="$output -l $max_logical_volumes"
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| 121 | [ "$max_physical_volumes" ] && output="$output -p $max_physical_volumes"
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| 122 | [ "$physical_extent_size" ] && output="$output -s $physical_extent_size"
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| 123 | echo "$output"
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| 124 | rm -f $VG_info_file
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| 125 | }
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| 126 |
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| 127 |
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| 128 |
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| 129 |
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| 130 |
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| 131 | ProcessVolumeGroup() {
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| 132 | local current_VG physical_volumes i list_of_devices VG_params
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| 133 | current_VG=$1
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| 134 | if [ $lvmversion = 2 ]; then
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| 135 | VG_params=`GenerateVgcreateParameters $current_VG`
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| 136 | current_PVs=`$LVMCMD pvs | grep " $current_VG " | awk '{print $1}' | tr '\n' ' '`
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| 137 | list_of_devices=$current_PVs
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| 138 | else
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| 139 | info_file=/proc/lvm/VGs/$current_VG/group
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| 140 | physical_volumes=`ls /proc/lvm/VGs/$current_VG/PVs`
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| 141 | VG_params=`GenerateVgcreateParameters $current_VG`
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| 142 | list_of_devices=""
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| 143 | for i in $physical_volumes ; do
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| 144 | fname=/proc/lvm/VGs/$current_VG/PVs/$i
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| 145 | device=`GetValueFromField $fname "name:"`
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| 146 | list_of_devices="$list_of_devices $device"
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| 147 | done
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| 148 | current_PVs=$list_of_devices
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| 149 | fi
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| 150 | l=""
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| 151 | if [ -f /etc/multipath.conf ]; then
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| 152 | # If multipath check which type of devide are given, mpath prefered
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| 153 | for d in $list_of_devices; do
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| 154 | l="$l `mindi --readalllink $d`"
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| 155 | l="$l `GiveMapperOfdm $d`"
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| 156 | done
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| 157 | list_of_devices="`echo $l | sort -u`"
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| 158 | fi
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| 159 |
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| 160 | if [ "$MINDI_EXCLUDE_DEVS" ] ; then
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| 161 | for ed in $MINDI_EXCLUDE_DEVS ; do
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| 162 | if [ "`echo " $list_of_devices" | grep " $ed"`" != "" ]; then
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| 163 | echo $current_VG >> $MINDI_TMP/excludedvgs
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| 164 | return
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| 165 | fi
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| 166 | done
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| 167 | fi
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| 168 | echo "# $LVMCMD vgcreate $current_VG$VG_params $current_PVs"
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| 169 | echo "# $LVMCMD vgchange -a y $current_VG"
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| 170 | }
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| 171 |
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| 172 |
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| 173 |
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| 174 | ListAllPhysicalVolumes() {
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| 175 | if [ $lvmversion = 2 ]; then
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| 176 | $LVMCMD pvscan 2> /dev/null | grep 'PV' | grep -v unknown | awk '{print $2}' > $MINDI_TMP/pv.tmp
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| 177 | else
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| 178 | pvscan 2> /dev/null | grep '"' | cut -d'"' -f2 > $MINDI_TMP/pv.tmp
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| 179 | fi
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| 180 |
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| 181 | rm -f $MINDI_TMP/pv.tmp2
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| 182 | for d in `cat $MINDI_TMP/pv.tmp`; do
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| 183 | # Skip devices excluded, coming from mondoarchive
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| 184 | skip=0
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| 185 | l=""
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| 186 | l="$l `mindi --readalllink $d`"
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| 187 | l="$l `GiveMapperOfdm $d`"
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| 188 | list_of_devices="`echo $l | sort -u`"
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| 189 | if [ "$MINDI_EXCLUDE_DEVS" ] ; then
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| 190 | for ed in $MINDI_EXCLUDE_DEVS ; do
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| 191 | if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
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| 192 | skip=1
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| 193 | continue
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| 194 | fi
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| 195 | done
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| 196 | fi
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| 197 | if [ $skip -eq 1 ]; then
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| 198 | continue
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| 199 | fi
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| 200 | echo $d >> $MINDI_TMP/pv.tmp2
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| 201 | done
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| 202 |
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| 203 | if [ -f /etc/multipath.conf ]; then
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| 204 | # If multipath check which type of devide are given, mpath prefered
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| 205 | if [ -f $MINDI_TMP/pv.tmp2 ]; then
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| 206 | l=""
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| 207 | for d in `cat $MINDI_TMP/pv.tmp2`; do
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| 208 | skip=0
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| 209 | l="$l `mindi --readalllink $d`"
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| 210 | l="$l `GiveMapperOfdm $d`"
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| 211 | list_of_devices="`echo $l | sort -u`"
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| 212 | if [ "$MINDI_EXCLUDE_DEVS" ] ; then
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| 213 | for ed in $MINDI_EXCLUDE_DEVS ; do
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| 214 | if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
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| 215 | skip=1
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| 216 | continue
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| 217 | fi
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| 218 | done
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| 219 | fi
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| 220 | if [ $skip -eq 1 ]; then
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| 221 | continue
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| 222 | fi
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| 223 | GiveMapperOfdm $d
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| 224 | done
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| 225 | fi
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| 226 | else
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| 227 | if [ -f $MINDI_TMP/pv.tmp2 ]; then
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| 228 | cat $MINDI_TMP/pv.tmp2
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| 229 | fi
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| 230 | fi
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| 231 | rm -f $MINDI_TMP/pv.tmp $MINDI_TMP/pv.tmp2
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| 232 | }
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| 233 |
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| 234 |
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| 235 | ListAllVolumeGroups() {
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| 236 | $LVMCMD vgdisplay 2> /dev/null | awk '/^ *VG Name/ {print $3;}'
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| 237 | }
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| 238 |
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| 239 | GiveMapperOfdm () {
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| 240 |
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| 241 | major=`stat -c "%t" $1 2> /dev/null`
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| 242 | minor=`stat -c "%T" $1 2> /dev/null`
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| 243 |
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| 244 | for i in `ls /dev/mapper/*`; do
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| 245 | mj=`stat -c "%t" $i`
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| 246 | mn=`stat -c "%T" $i`
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| 247 | if [ "$mj" = "$major" ] && [ "$mn" = "$minor" ]; then
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| 248 | echo "$i"
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| 249 | return
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| 250 | fi
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| 251 | done
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| 252 | echo $1
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| 253 | }
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| 254 |
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| 255 |
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| 256 | ListLvmDrivesAndPartitions() {
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| 257 | # We get partitions in this loop not devices
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| 258 | for d in `$LVMCMD vgdisplay -v 2> /dev/null | grep "PV Name" | sed 's/(#)//' | awk '{print $3}'`; do
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| 259 | # If multipath check which type of devices are given, mpath prefered
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| 260 | if [ -f /etc/multipath.conf ]; then
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| 261 | i=`GiveMapperOfdm $d`
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| 262 | rep=$i
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| 263 | else
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| 264 | rep=$d
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| 265 | fi
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| 266 | skip=0
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| 267 | if [ "$MINDI_EXCLUDE_DEVS" ] ; then
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| 268 | for ed in $MINDI_EXCLUDE_DEVS ; do
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| 269 | if [ "`echo " $rep " | grep " $ed"`" != "" ]; then
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| 270 | skip=1
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| 271 | continue
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| 272 | fi
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| 273 | done
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| 274 | fi
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| 275 | if [ $skip -eq 1 ]; then
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| 276 | continue
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| 277 | fi
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| 278 | echo $rep
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| 279 | done
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| 280 | }
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| 281 |
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| 282 |
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| 283 |
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| 284 | PrettifyList() {
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| 285 | local i
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| 286 | echo -en "$1"
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| 287 | for i in $2 ; do
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| 288 | echo -en "$i "
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| 289 | done
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| 290 | echo ""
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| 291 | }
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| 292 |
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| 293 |
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| 294 | ListAllLogicalVolumes() {
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| 295 | if [ $lvmversion = 2 ]; then
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| 296 | $LVMCMD lvscan 2> /dev/null | grep "'" | grep -iw "ACTIVE" | cut -d"'" -f2
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| 297 | else
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| 298 | lvscan 2> /dev/null | grep '"' | grep -iw "ACTIVE" | cut -d'"' -f2
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| 299 | fi
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| 300 | }
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| 301 |
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| 302 |
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| 303 |
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| 304 | WriteShutdownScript() {
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| 305 | local i
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| 306 | echo ""
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| 307 | echo "Finally, to shut down and delete the volumes, do this:-"
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| 308 | for i in `ListAllLogicalVolumes` ; do
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| 309 | echo "($LVMCMD lvremove -f $i)"
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| 310 | done
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| 311 | for i in `ListAllVolumeGroups` ; do
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| 312 | echo "($LVMCMD vgchange -a n $i)"
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| 313 | done
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| 314 | for i in `ListAllVolumeGroups` ; do
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| 315 | echo "($LVMCMD vgremove $i)"
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| 316 | done
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| 317 | if [ $lvmversion = 2 ]; then
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| 318 | echo "(rmmod dm-mod & rmmod dm_mod & )"
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| 319 | else
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| 320 | echo "(rmmod lvm-mod)"
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| 321 | fi
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| 322 | }
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| 323 |
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| 324 |
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| 325 |
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| 326 | # -------------------------------- main -----------------------------------
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| 327 |
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| 328 | if [ "$1" = "--givemapperofdm" ] ; then
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| 329 | shift
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| 330 | if [ _"$1" != _"" ] ; then
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| 331 | GiveMapperOfdm $1
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| 332 | fi
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| 333 | exit 0
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| 334 | fi
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| 335 |
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| 336 |
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| 337 | which lvmdiskscan 2>/dev/null 2>&1 || Die "lvmdiskscan not found. Won't handle LVM."
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| 338 | if [ -e "/proc/lvm/global" ] && [ "`tr -s '\t' ' ' < /proc/lvm/global | grep "0 VGs 0 PVs 0 LVs"`" != "" ]; then
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| 339 | exit 1
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| 340 | fi
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| 341 |
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| 342 | if [ _"$MINDI_TMP" = _"" ]; then
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| 343 | # Launched stdalone, so create a temp dir
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| 344 | MINDI_TMP=`mktemp -d $TMPDIR/mindi.XXXXXXXXXX`
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| 345 | if [ $? -ne 0 ]; then
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| 346 | df $TMPDIR
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| 347 | Die "Unable to create a temporary directory ! Check space on $TMPDIR"
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| 348 | fi
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| 349 | if [ _"$MINDI_TMP" = _"" ]; then
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| 350 | Die "MINDI_TMP is empty, aborting"
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| 351 | fi
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| 352 | if [ _"$MINDI_TMP" = _"/" ]; then
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| 353 | Die "MINDI_TMP is /, aborting"
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| 354 | fi
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| 355 | fi
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| 356 |
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| 357 | # Older lvmdiskscan use --help, newer --version
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| 358 | lvmopt="--help"
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| 359 | lvmdiskscan $lvmopt 2>&1 | grep -q -- "--version"
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| 360 | if [ $? -eq 0 ]; then
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| 361 | lvmopt="--version"
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| 362 | fi
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| 363 |
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| 364 |
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| 365 | lvmversion=`lvmdiskscan --help 2>&1 |
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| 366 | grep -E "Logical Volume Manager|LVM version:" |
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| 367 | cut -d: -f2 | cut -d. -f1 |
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| 368 | awk '{print $NF}' |
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| 369 | sed -e 's/ //g'`
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| 370 |
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| 371 | if which lvm 2>/dev/null; then
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| 372 | version=`lvm version | grep "LVM version" | awk '{print $3}'`
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| 373 | i="`echo "$version" | cut -d'.' -f1`"
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| 374 | echo "i=$i"
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| 375 | if [ "$i" -ge "2" ] ; then
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| 376 | lvmversion=2
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| 377 | fi
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| 378 | fi
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| 379 |
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| 380 | if [ $lvmversion = 2 ]; then
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| 381 | echo "LVM version >= 2.0 found."
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| 382 | LVMCMD="lvm"
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| 383 | else
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| 384 | LVMCMD=""
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| 385 | fi
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| 386 |
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| 387 | rm -f $MINDI_TMP/excludedvgs
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| 388 | all_lvm_drives_and_partitions=`ListLvmDrivesAndPartitions`
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| 389 | echo "Just before you extrapolate mountlist to include RAID partitions,"
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| 390 | echo "extrapolate it to include the following LVM drives and partitions:-"
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| 391 | PrettifyList ">>>>> " "$all_lvm_drives_and_partitions"
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| 392 | echo "To get started, type:-"
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| 393 | if [ $lvmversion = 2 ]; then
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| 394 | echo "(insmod dm-mod)"
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| 395 | echo "(insmod dm_mod)"
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| 396 | else
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| 397 | echo "(insmod lvm-mod)"
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| 398 | fi
|
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| 399 | echo "# $LVMCMD vgchange -an"
|
|---|
| 400 | for i in `ListAllPhysicalVolumes` ; do
|
|---|
| 401 | echo "# echo y | $LVMCMD pvcreate -ff $i"
|
|---|
| 402 | done
|
|---|
| 403 | echo "# $LVMCMD vgscan"
|
|---|
| 404 | echo ""
|
|---|
| 405 | echo "Create and activate the VG's (volume groups)."
|
|---|
| 406 | all_volume_groups=`ListAllVolumeGroups`
|
|---|
| 407 | for current_VG in $all_volume_groups ; do
|
|---|
| 408 | if [ $lvmversion -ne 2 ]; then
|
|---|
| 409 | echo "# rm -Rf /dev/$current_VG"
|
|---|
| 410 | fi
|
|---|
| 411 | ProcessVolumeGroup $current_VG
|
|---|
| 412 | done
|
|---|
| 413 | echo ""
|
|---|
| 414 | echo "Finally, create the LV's (logical volumes)."
|
|---|
| 415 | all_logical_volumes=`ListAllLogicalVolumes`
|
|---|
| 416 | for current_LV in $all_logical_volumes ; do
|
|---|
| 417 | ProcessLogicalVolume $current_LV
|
|---|
| 418 | done
|
|---|
| 419 | echo ""
|
|---|
| 420 | echo "# $LVMCMD vgscan"
|
|---|
| 421 | echo "Now you may format the LV's:-"
|
|---|
| 422 | for i in `ListAllLogicalVolumes` ; do
|
|---|
| 423 | echo "(mkfs -t foo $i or something like that)"
|
|---|
| 424 | done
|
|---|
| 425 | rm -f $MINDI_TMP/excludedvgs
|
|---|
| 426 | WriteShutdownScript
|
|---|
| 427 | exit 0
|
|---|
| 428 |
|
|---|
| 429 |
|
|---|
| 430 |
|
|---|
