source: MondoRescue/branches/2.2.9/mindi/analyze-my-lvm@ 2702

Last change on this file since 2702 was 2702, checked in by Bruno Cornec, 13 years ago

r4178@localhost: bruno | 2011-01-26 22:08:55 +0100

  • Replace usage of pvs zith pvscan for speed reasons in analyze-my-lvm (still some speed optimizations to do in that script)
  • Property svn:keywords set to Id
File size: 10.9 KB
Line 
1#!/bin/bash
2#
3# $Id: analyze-my-lvm 2702 2011-01-27 18:31:15Z bruno $
4#
5
6Die() {
7 echo "$1" >> /dev/stderr
8 exit -1
9}
10
11
12
13GetValueFromField() {
14 local res
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 $0;};}'
16}
17
18
19GetLastBit() {
20 local i res
21 i=20
22 res=""
23 while [ ! "$res" ] ; do
24 i=$(($i-1))
25 res=`echo "$1" | cut -d'/' -f$i`
26 done
27 echo "$res"
28}
29
30
31ProcessLogicalVolume() {
32 local LV_full_string fname logical_volume volume_group device
33 LV_full_string=$1
34 if [ ! -e "$1" ]; then
35 echo "WARNING - cannot find LV file $1" | tee -a /dev/stderr
36 return
37 fi
38 volume_group=`echo "$LV_full_string" | cut -d'/' -f3`
39 logical_volume=`echo "$LV_full_string" | cut -d'/' -f4`
40 if [ $lvmversion = 2 ]; then
41 device=$LV_full_string
42 params=`GenerateLvcreateParameters $device`
43 else
44 fname=/proc/lvm/VGs/$volume_group/LVs/$logical_volume
45 if [ ! -e "$fname" ] ; then
46 echo "WARNING - cannot find $volume_group's $logical_volume LV file" | tee -a /dev/stderr
47 return
48 else
49 device=`GetValueFromField $fname "name:"`
50 params=`GenerateLvcreateParameters $device`
51 fi
52 fi
53
54 # Exclude LVs member of that env var
55 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
56 list_of_devices="`mindi --readalllink $LV_full_string`"
57 l=""
58 for d in $list_of_devices; do
59 l="$l `GiveMapperOfdm $d`"
60 done
61 list_of_devices="`echo $l | sort -u`"
62 for ed in $MINDI_EXCLUDE_DEVS ; do
63 if [ "`echo " $list_of_devices" | grep " $ed"`" != "" ]; then
64 echo "Not including device $LV_full_string as it was excluded"
65 return
66 fi
67 done
68 fi
69 # Do not process LV whose VG are excluded
70 if [ -f $MINDI_TMP/excludedvgs ]; then
71 if [ "`grep -x $volume_group $MINDI_TMP/excludedvgs`" != "" ]; then
72 echo "Not including LV $logical_volume as VG $volume_group was excluded"
73 return
74 fi
75 fi
76
77 echo "# $LVMCMD lvcreate$params -n $logical_volume $volume_group"
78}
79
80
81GenerateLvcreateParameters() {
82 local device stripes stripesize device fname allocation output readahead
83 fname=$MINDI_TMP/PLF.$$.txt
84 device=$1
85 output=""
86 $LVMCMD lvdisplay $device > $fname
87 stripes=`GetValueFromField $fname "Stripes"`
88 stripesize=`GetValueFromField $fname "Stripe size (MByte)"`m
89 [ "$stripesize" = "m" ] && stripesize=`GetValueFromField $fname "Stripe size (KByte)"`k
90 [ "$stripesize" = "k" ] && stripesize=""
91 allocation=`GetValueFromField $fname "LV Size"`
92 [ ! "`echo "$allocation" | grep "[k,m,g]"`" ] && allocation="$allocation"m
93 if echo "$allocation" | grep -E '^.*g$' > /dev/null 2> /dev/null ; then
94 val=`echo "$allocation" | sed s/g//`
95 allocation=`echo "$val" | awk '{c=$1; printf "%d", c*1024;}'`m
96 fi
97 readahead=`GetValueFromField $fname "Read ahead sectors"`
98 rm -f $fname
99 [ "$stripes" ] && output="$output -i $stripes"
100 [ "$stripesize" ] && output="$output -I $stripesize"
101 [ "$allocation" ] && output="$output -L $allocation"
102 [ "$readahead" ] && output="$output -r $readahead"
103 echo "$output"
104}
105
106
107
108GenerateVgcreateParameters() {
109 local current_VG device fname incoming VG_info_file max_logical_volumes max_physical_volumes physical_extent_size output blanklines
110 current_VG=$1
111 VG_info_file=$MINDI_TMP/$$.vg-info.txt
112 # We use cat here as a way to avoid SElinux to prevent us from writing in $VG_info_file
113 $LVMCMD vgdisplay $current_VG | cat > $VG_info_file
114 max_logical_volumes=`GetValueFromField "$VG_info_file" "MAX LV"`
115 [ $max_logical_volumes -ge 256 ] && max_logical_volumes=255
116 max_physical_volumes=`GetValueFromField "$VG_info_file" "MAX PV"`
117 [ $max_physical_volumes -ge 256 ] && max_physical_volumes=255
118 physical_extent_size=`GetValueFromField "$VG_info_file" "PE Size"`
119 output=""
120 [ "$max_logical_volumes" ] && output="$output -l $max_logical_volumes"
121 [ "$max_physical_volumes" ] && output="$output -p $max_physical_volumes"
122 [ "$physical_extent_size" ] && output="$output -s $physical_extent_size"
123 echo "$output"
124 rm -f $VG_info_file
125}
126
127
128
129
130
131ProcessVolumeGroup() {
132 local current_VG physical_volumes i list_of_devices VG_params
133 current_VG=$1
134 if [ $lvmversion = 2 ]; then
135 VG_params=`GenerateVgcreateParameters $current_VG`
136 current_PVs=`$LVMCMD pvscan | grep " $current_VG " | awk '{print $2}' | tr '\n' ' '`
137 list_of_devices=$current_PVs
138 else
139 info_file=/proc/lvm/VGs/$current_VG/group
140 physical_volumes=`ls /proc/lvm/VGs/$current_VG/PVs`
141 VG_params=`GenerateVgcreateParameters $current_VG`
142 list_of_devices=""
143 for i in $physical_volumes ; do
144 fname=/proc/lvm/VGs/$current_VG/PVs/$i
145 device=`GetValueFromField $fname "name:"`
146 list_of_devices="$list_of_devices $device"
147 done
148 current_PVs=$list_of_devices
149 fi
150 l=""
151 if [ -f /etc/multipath.conf ]; then
152 # If multipath check which type of devide are given, mpath prefered
153 for d in $list_of_devices; do
154 l="$l `mindi --readalllink $d`"
155 l="$l `GiveMapperOfdm $d`"
156 done
157 list_of_devices="`echo $l | sort -u`"
158 fi
159
160 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
161 for ed in $MINDI_EXCLUDE_DEVS ; do
162 if [ "`echo " $list_of_devices" | grep " $ed"`" != "" ]; then
163 echo $current_VG >> $MINDI_TMP/excludedvgs
164 return
165 fi
166 done
167 fi
168 echo "# $LVMCMD vgcreate $current_VG$VG_params $current_PVs"
169 echo "# $LVMCMD vgchange -a y $current_VG"
170}
171
172
173
174ListAllPhysicalVolumes() {
175 if [ $lvmversion = 2 ]; then
176 $LVMCMD pvscan 2> /dev/null | grep 'PV' | grep -v unknown | awk '{print $2}' > $MINDI_TMP/pv.tmp
177 else
178 pvscan 2> /dev/null | grep '"' | cut -d'"' -f2 > $MINDI_TMP/pv.tmp
179 fi
180
181 rm -f $MINDI_TMP/pv.tmp2
182 for d in `cat $MINDI_TMP/pv.tmp`; do
183 # Skip devices excluded, coming from mondoarchive
184 skip=0
185 l=""
186 l="$l `mindi --readalllink $d`"
187 l="$l `GiveMapperOfdm $d`"
188 list_of_devices="`echo $l | sort -u`"
189 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
190 for ed in $MINDI_EXCLUDE_DEVS ; do
191 if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
192 skip=1
193 continue
194 fi
195 done
196 fi
197 if [ $skip -eq 1 ]; then
198 continue
199 fi
200 echo $d >> $MINDI_TMP/pv.tmp2
201 done
202
203 if [ -f /etc/multipath.conf ]; then
204 # If multipath check which type of devide are given, mpath prefered
205 if [ -f $MINDI_TMP/pv.tmp2 ]; then
206 l=""
207 for d in `cat $MINDI_TMP/pv.tmp2`; do
208 skip=0
209 l="$l `mindi --readalllink $d`"
210 l="$l `GiveMapperOfdm $d`"
211 list_of_devices="`echo $l | sort -u`"
212 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
213 for ed in $MINDI_EXCLUDE_DEVS ; do
214 if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
215 skip=1
216 continue
217 fi
218 done
219 fi
220 if [ $skip -eq 1 ]; then
221 continue
222 fi
223 GiveMapperOfdm $d
224 done
225 fi
226 else
227 if [ -f $MINDI_TMP/pv.tmp2 ]; then
228 cat $MINDI_TMP/pv.tmp2
229 fi
230 fi
231 rm -f $MINDI_TMP/pv.tmp $MINDI_TMP/pv.tmp2
232}
233
234
235ListAllVolumeGroups() {
236 $LVMCMD vgdisplay 2> /dev/null | awk '/^ *VG Name/ {print $3;}'
237}
238
239GiveMapperOfdm () {
240
241major=`stat -c "%t" $1 2> /dev/null`
242minor=`stat -c "%T" $1 2> /dev/null`
243
244for i in `ls /dev/mapper/*`; do
245 mj=`stat -c "%t" $i`
246 mn=`stat -c "%T" $i`
247 if [ "$mj" = "$major" ] && [ "$mn" = "$minor" ]; then
248 echo "$i"
249 return
250 fi
251done
252echo $1
253}
254
255
256ListLvmDrivesAndPartitions() {
257 # We get partitions in this loop not devices
258 for d in `$LVMCMD vgdisplay -v 2> /dev/null | grep "PV Name" | sed 's/(#)//' | awk '{print $3}'`; do
259 # If multipath check which type of devices are given, mpath prefered
260 if [ -f /etc/multipath.conf ]; then
261 i=`GiveMapperOfdm $d`
262 rep=$i
263 else
264 rep=$d
265 fi
266 skip=0
267 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
268 for ed in $MINDI_EXCLUDE_DEVS ; do
269 if [ "`echo " $rep " | grep " $ed"`" != "" ]; then
270 skip=1
271 continue
272 fi
273 done
274 fi
275 if [ $skip -eq 1 ]; then
276 continue
277 fi
278 echo $rep
279 done
280}
281
282
283
284PrettifyList() {
285 local i
286 echo -en "$1"
287 for i in $2 ; do
288 echo -en "$i "
289 done
290 echo ""
291}
292
293
294ListAllLogicalVolumes() {
295 if [ $lvmversion = 2 ]; then
296 $LVMCMD lvscan 2> /dev/null | grep "'" | grep -iw "ACTIVE" | cut -d"'" -f2
297 else
298 lvscan 2> /dev/null | grep '"' | grep -iw "ACTIVE" | cut -d'"' -f2
299 fi
300}
301
302
303
304WriteShutdownScript() {
305 local i
306 echo ""
307 echo "Finally, to shut down and delete the volumes, do this:-"
308 for i in `ListAllLogicalVolumes` ; do
309 echo "($LVMCMD lvremove -f $i)"
310 done
311 for i in `ListAllVolumeGroups` ; do
312 echo "($LVMCMD vgchange -a n $i)"
313 done
314 for i in `ListAllVolumeGroups` ; do
315 echo "($LVMCMD vgremove $i)"
316 done
317 if [ $lvmversion = 2 ]; then
318 echo "(rmmod dm-mod & rmmod dm_mod & )"
319 else
320 echo "(rmmod lvm-mod)"
321 fi
322}
323
324
325
326# -------------------------------- main -----------------------------------
327
328if [ "$1" = "--givemapperofdm" ] ; then
329 shift
330 if [ _"$1" != _"" ] ; then
331 GiveMapperOfdm $1
332 fi
333 exit 0
334fi
335
336
337which lvmdiskscan 2>/dev/null 2>&1 || Die "lvmdiskscan not found. Won't handle LVM."
338if [ -e "/proc/lvm/global" ] && [ "`tr -s '\t' ' ' < /proc/lvm/global | grep "0 VGs 0 PVs 0 LVs"`" != "" ]; then
339 exit 1
340fi
341
342if [ _"$MINDI_TMP" = _"" ]; then
343 # Launched stdalone, so create a temp dir
344 MINDI_TMP=`mktemp -d $TMPDIR/mindi.XXXXXXXXXX`
345 if [ $? -ne 0 ]; then
346 df $TMPDIR
347 Die "Unable to create a temporary directory ! Check space on $TMPDIR"
348 fi
349 if [ _"$MINDI_TMP" = _"" ]; then
350 Die "MINDI_TMP is empty, aborting"
351 fi
352 if [ _"$MINDI_TMP" = _"/" ]; then
353 Die "MINDI_TMP is /, aborting"
354 fi
355fi
356
357# Older lvmdiskscan use --help, newer --version
358lvmopt="--help"
359lvmdiskscan $lvmopt 2>&1 | grep -q -- "--version"
360if [ $? -eq 0 ]; then
361 lvmopt="--version"
362fi
363
364
365lvmversion=`lvmdiskscan --help 2>&1 |
366 grep -E "Logical Volume Manager|LVM version:" |
367 cut -d: -f2 | cut -d. -f1 |
368 awk '{print $NF}' |
369 sed -e 's/ //g'`
370
371if which lvm 2>/dev/null; then
372 version=`lvm version | grep "LVM version" | awk '{print $3}'`
373 i="`echo "$version" | cut -d'.' -f1`"
374 echo "i=$i"
375 if [ "$i" -ge "2" ] ; then
376 lvmversion=2
377 fi
378fi
379
380if [ $lvmversion = 2 ]; then
381 echo "LVM version >= 2.0 found."
382 LVMCMD="lvm"
383else
384 LVMCMD=""
385fi
386
387rm -f $MINDI_TMP/excludedvgs
388all_lvm_drives_and_partitions=`ListLvmDrivesAndPartitions`
389echo "Just before you extrapolate mountlist to include RAID partitions,"
390echo "extrapolate it to include the following LVM drives and partitions:-"
391PrettifyList ">>>>> " "$all_lvm_drives_and_partitions"
392echo "To get started, type:-"
393if [ $lvmversion = 2 ]; then
394 echo "(insmod dm-mod)"
395 echo "(insmod dm_mod)"
396else
397 echo "(insmod lvm-mod)"
398fi
399echo "# $LVMCMD vgchange -an"
400for i in `ListAllPhysicalVolumes` ; do
401 echo "# echo y | $LVMCMD pvcreate -ff $i"
402done
403echo "# $LVMCMD vgscan"
404echo ""
405echo "Create and activate the VG's (volume groups)."
406all_volume_groups=`ListAllVolumeGroups`
407for 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
412done
413echo ""
414echo "Finally, create the LV's (logical volumes)."
415all_logical_volumes=`ListAllLogicalVolumes`
416for current_LV in $all_logical_volumes ; do
417 ProcessLogicalVolume $current_LV
418done
419echo ""
420echo "# $LVMCMD vgscan"
421echo "Now you may format the LV's:-"
422for i in `ListAllLogicalVolumes` ; do
423 echo "(mkfs -t foo $i or something like that)"
424done
425rm -f $MINDI_TMP/excludedvgs
426WriteShutdownScript
427exit 0
428
429
430
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