source: MondoRescue/branches/3.2/mindi/analyze-my-lvm@ 3607

Last change on this file since 3607 was 3559, checked in by Bruno Cornec, 8 years ago
  • Fix #792 by forcing fixed values for LE if percentage calcultaed for it is 0
  • Property svn:keywords set to Id
File size: 12.1 KB
Line 
1#!/bin/bash
2#
3# $Id: analyze-my-lvm 3559 2016-04-11 10:45:32Z bruno $
4#
5
6Die() {
7 echo "$1" >> /dev/stderr
8 exit -1
9}
10
11
12
13GetValueFromField() {
14 local res
15 grep -i "$2" "$1" | perl -p -e 's/\s*(.*)\s\s\s+(.+)$/$2/;s/\sT[i]*B/t/;s/\sG[i]*B/g/;s/\sM[i]*B/m/;s/\sK[i]*B/k/'
16}
17
18
19GetLastBit() {
20 local i res
21 i=20
22 res=""
23 while [ ! "$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 --nolog --readalllink $LV_full_string 2> /dev/null`"
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 `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; 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 "# echo y | $LVMCMD lvcreate$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.$$.txt
84 fname2=$MINDI_TMP/PLF2.$$.txt
85 device=$1
86 output=""
87 $LVMCMD lvdisplay $device | cat > $fname
88 stripes=`GetValueFromField $fname "Stripes"`
89 stripesize=`GetValueFromField $fname "Stripe size (MByte)"`m
90 [ "$stripesize" = "m" ] && stripesize=`GetValueFromField $fname "Stripe size (KByte)"`k
91 [ "$stripesize" = "k" ] && stripesize=""
92 currentLE=`GetValueFromField $fname "Current LE"`
93 vgname=`GetValueFromField $fname "VG Name"`
94 $LVMCMD vgdisplay $vgname | cat > $fname2
95 totalLE=`GetValueFromField $fname2 "Total PE"`
96 ratio=`perl -e '$per='$currentLE'*100/'$totalLE' ; print int($per)'`
97 if [ $ratio -eq 0 ]; then
98 # In that case, restoration will fail with 0% so use value
99 output="$output -l $currentLE"
100 else
101 allocation=`perl -e 'print int('$ratio')."%VG"'`
102 output="$output -l $allocation"
103 fi
104 readahead=`GetValueFromField $fname "Read ahead sectors"`
105 rm -f $fname $fname2
106 [ "$stripes" ] && output="$output -i $stripes"
107 [ "$stripesize" ] && output="$output -I $stripesize"
108 [ "$readahead" ] && output="$output -r $readahead"
109 echo "$output"
110}
111
112
113
114GenerateVgcreateParameters() {
115 local current_VG device fname incoming VG_info_file max_logical_volumes max_physical_volumes physical_extent_size output blanklines
116 current_VG=$1
117 VG_info_file=$MINDI_TMP/$$.vg-info.txt
118 # We use cat here as a way to avoid SElinux to prevent us from writing in $VG_info_file
119 $LVMCMD vgdisplay $current_VG | cat > $VG_info_file
120 max_logical_volumes=`GetValueFromField "$VG_info_file" "MAX LV"`
121 [ $max_logical_volumes -ge 256 ] && max_logical_volumes=255
122 max_physical_volumes=`GetValueFromField "$VG_info_file" "MAX PV"`
123 [ $max_physical_volumes -ge 256 ] && max_physical_volumes=255
124 physical_extent_size=`GetValueFromField "$VG_info_file" "PE Size"`
125 output=""
126 [ "$max_logical_volumes" ] && output="$output -l $max_logical_volumes"
127 [ "$max_physical_volumes" ] && output="$output -p $max_physical_volumes"
128 [ "$physical_extent_size" ] && output="$output -s $physical_extent_size"
129 echo "$output"
130 rm -f $VG_info_file
131}
132
133
134
135ProcessVolumeGroup() {
136 local current_VG physical_volumes i list_of_devices VG_params
137 current_VG=$1
138 if [ $lvmversion = 2 ]; then
139 VG_params=`GenerateVgcreateParameters $current_VG`
140 current_PVs=`$LVMCMD pvscan | grep " $current_VG " | awk '{print $2}' | tr '\n' ' '`
141 list_of_devices=$current_PVs
142 else
143 info_file=/proc/lvm/VGs/$current_VG/group
144 physical_volumes=`ls /proc/lvm/VGs/$current_VG/PVs`
145 VG_params=`GenerateVgcreateParameters $current_VG`
146 list_of_devices=""
147 for i in $physical_volumes ; do
148 fname=/proc/lvm/VGs/$current_VG/PVs/$i
149 device=`GetValueFromField $fname "name:"`
150 list_of_devices="$list_of_devices $device"
151 done
152 current_PVs=$list_of_devices
153 fi
154 l=""
155 if [ -f /etc/multipath.conf ]; then
156 # If multipath check which type of devide are given, mpath prefered
157 for d in $list_of_devices; do
158 l="$l `mindi --nolog --readalllink $d 2> /dev/null`"
159 l="$l `GiveMapperOfdm $d`"
160 done
161 list_of_devices="`echo $l | sort -u`"
162 fi
163
164 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
165 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
166 if [ "`echo " $list_of_devices" | grep " $ed"`" != "" ]; then
167 echo $current_VG >> $MINDI_TMP/excludedvgs
168 return
169 fi
170 done
171 fi
172 echo "# $LVMCMD vgcreate $current_VG$VG_params $current_PVs"
173 echo "# $LVMCMD vgchange -a y $current_VG"
174}
175
176
177
178ListAllPhysicalVolumes() {
179 if [ $lvmversion = 2 ]; then
180 $LVMCMD pvscan 2> /dev/null | grep 'PV' | grep -v unknown | awk '{print $2}' > $MINDI_TMP/pv.tmp
181 else
182 pvscan 2> /dev/null | grep '"' | cut -d'"' -f2 > $MINDI_TMP/pv.tmp
183 fi
184
185 rm -f $MINDI_TMP/pv.tmp2
186 for d in `cat $MINDI_TMP/pv.tmp`; do
187 # Skip devices excluded, coming from mondoarchive
188 skip=0
189 l=""
190 l="$l `mindi --nolog --readalllink $d 2> /dev/null`"
191 l="$l `GiveMapperOfdm $d`"
192 list_of_devices="`echo $l | sort -u`"
193 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
194 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
195 if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
196 skip=1
197 continue
198 fi
199 done
200 fi
201 if [ $skip -eq 1 ]; then
202 continue
203 fi
204 echo $d >> $MINDI_TMP/pv.tmp2
205 done
206
207 if [ -f /etc/multipath.conf ]; then
208 # If multipath check which type of devide are given, mpath prefered
209 if [ -f $MINDI_TMP/pv.tmp2 ]; then
210 l=""
211 for d in `cat $MINDI_TMP/pv.tmp2`; do
212 skip=0
213 l="$l `mindi --nolog --readalllink $d 2> /dev/null`"
214 l="$l `GiveMapperOfdm $d`"
215 list_of_devices="`echo $l | sort -u`"
216 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
217 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
218 if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
219 skip=1
220 continue
221 fi
222 done
223 fi
224 if [ $skip -eq 1 ]; then
225 continue
226 fi
227 GiveMapperOfdm $d
228 done
229 fi
230 else
231 if [ -f $MINDI_TMP/pv.tmp2 ]; then
232 cat $MINDI_TMP/pv.tmp2
233 fi
234 fi
235 rm -f $MINDI_TMP/pv.tmp $MINDI_TMP/pv.tmp2
236}
237
238
239ListAllVolumeGroups() {
240 $LVMCMD vgdisplay 2> /dev/null | awk '/^ *VG Name/ {print $3;}'
241}
242
243GiveMapperOfdm () {
244
245major=`stat -L -c "%t" $1 2> /dev/null`
246minor=`stat -L -c "%T" $1 2> /dev/null`
247
248for i in `ls /dev/mapper/*`; do
249 mj=`stat -L -c "%t" $i`
250 mn=`stat -L -c "%T" $i`
251 if [ "$mj" = "$major" ] && [ "$mn" = "$minor" ]; then
252 echo "$i"
253 return
254 fi
255done
256echo $1
257}
258
259GiveVGLVOfdm () {
260
261major=`stat -L -c "%t" $1 2> /dev/null`
262minor=`stat -L -c "%T" $1 2> /dev/null`
263
264for v in `vgs --noheadings | awk '{print $1}'`; do
265 for i in `ls /dev/$v/*`; do
266 mj=`stat -L -c "%t" $i`
267 mn=`stat -L -c "%T" $i`
268 if [ "$mj" = "$major" ] && [ "$mn" = "$minor" ]; then
269 echo "$i"
270 return
271 fi
272 done
273done
274echo $1
275}
276
277
278ListLvmDrivesAndPartitions() {
279 # We get partitions in this loop not devices
280 for d in `$LVMCMD vgdisplay -v 2> /dev/null | grep "PV Name" | sed 's/(#)//' | awk '{print $3}'`; do
281 # If multipath check which type of devices are given, mpath prefered
282 if [ -f /etc/multipath.conf ]; then
283 i=`GiveMapperOfdm $d`
284 rep=$i
285 else
286 rep=$d
287 fi
288 skip=0
289 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
290 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
291 if [ "`echo " $rep " | grep " $ed"`" != "" ]; then
292 skip=1
293 continue
294 fi
295 done
296 fi
297 if [ $skip -eq 1 ]; then
298 continue
299 fi
300 echo $rep
301 done
302}
303
304
305
306PrettifyList() {
307 local i
308 echo -en "$1"
309 for i in $2 ; do
310 echo -en "$i "
311 done
312 echo ""
313}
314
315ListAllLogicalVolumesSortedBydm() {
316 rm -f $MINDI_TMP/sorteddm
317 for d in `ListAllLogicalVolumes` ; do
318 dm=`mindi --nolog --readalllink $d 2> /dev/null | tail -1`
319 echo "$dm|$d" >> $MINDI_TMP/sorteddm
320 done
321 if [ -f $MINDI_TMP/sorteddm ]; then
322 cut -d'-' -f2- $MINDI_TMP/sorteddm | sort -t'|' -n | cut -d'|' -f2
323 fi
324}
325
326ListAllLogicalVolumes() {
327 if [ $lvmversion = 2 ]; then
328 $LVMCMD lvscan 2> /dev/null | grep "'" | grep -iw "ACTIVE" | cut -d"'" -f2
329 else
330 lvscan 2> /dev/null | grep '"' | grep -iw "ACTIVE" | cut -d'"' -f2
331 fi
332}
333
334
335
336WriteShutdownScript() {
337 local i
338 echo ""
339 echo "Finally, to shut down and delete the volumes, do this:-"
340 for i in `ListAllLogicalVolumes` ; do
341 echo "($LVMCMD lvremove -f $i)"
342 done
343 for i in `ListAllVolumeGroups` ; do
344 echo "($LVMCMD vgchange -a n $i)"
345 done
346 for i in `ListAllVolumeGroups` ; do
347 echo "($LVMCMD vgremove $i)"
348 done
349 if [ $lvmversion = 2 ]; then
350 echo "(rmmod dm-mod & rmmod dm_mod & )"
351 else
352 echo "(rmmod lvm-mod)"
353 fi
354}
355
356
357
358# -------------------------------- main -----------------------------------
359
360# These exports are needed to avoid bad formating of display commands (, instead of . for separator e.g.)
361# Fix #654
362export LANG=C
363export LANGUAGE=C
364
365if [ "$1" = "--givemapperofdm" ] ; then
366 shift
367 if [ _"$1" != _"" ] ; then
368 GiveMapperOfdm $1
369 fi
370 exit 0
371fi
372
373if [ "$1" = "--givevglvofdm" ] ; then
374 shift
375 if [ _"$1" != _"" ] ; then
376 GiveVGLVOfdm $1
377 fi
378 exit 0
379fi
380
381
382which lvmdiskscan 2>/dev/null 2>&1 || Die "lvmdiskscan not found. Won't handle LVM."
383if [ -e "/proc/lvm/global" ] && [ "`tr -s '\t' ' ' < /proc/lvm/global | grep "0 VGs 0 PVs 0 LVs"`" != "" ]; then
384 exit 1
385fi
386
387if [ _"$MINDI_TMP" = _"" ]; then
388 # Launched stdalone, so create a temp dir
389 STDALONE="true"
390 TMPDIR=${TMPDIR:=/tmp}
391 if [ ! -d $TMPDIR ]; then
392 mkdir -p $TMPDIR
393 fi
394 MINDI_TMP=`mktemp -d $TMPDIR/mindi.XXXXXXXXXX`
395 if [ $? -ne 0 ]; then
396 df $TMPDIR
397 Die "Unable to create a temporary directory ! Check space on $TMPDIR"
398 fi
399 if [ _"$MINDI_TMP" = _"" ]; then
400 Die "MINDI_TMP is empty, aborting"
401 fi
402 if [ _"$MINDI_TMP" = _"/" ]; then
403 Die "MINDI_TMP is /, aborting"
404 fi
405fi
406
407# Older lvmdiskscan use --help, newer --version
408lvmopt="--help"
409lvmdiskscan $lvmopt 2>&1 | grep -q -- "--version"
410if [ $? -eq 0 ]; then
411 lvmopt="--version"
412fi
413
414
415lvmversion=`lvmdiskscan --help 2>&1 |
416 grep -E "Logical Volume Manager|LVM version:" |
417 cut -d: -f2 | cut -d. -f1 |
418 awk '{print $NF}' |
419 sed -e 's/ //g'`
420
421if which lvm 2>/dev/null; then
422 version=`lvm version | grep "LVM version" | awk '{print $3}'`
423 i="`echo "$version" | cut -d'.' -f1`"
424 echo "i=$i"
425 if [ "$i" -ge "2" ] ; then
426 lvmversion=2
427 fi
428fi
429
430if [ $lvmversion = 2 ]; then
431 echo "LVM version >= 2.0 found."
432 LVMCMD="lvm"
433else
434 LVMCMD=""
435fi
436
437rm -f $MINDI_TMP/excludedvgs
438all_lvm_drives_and_partitions=`ListLvmDrivesAndPartitions`
439echo "Just before you extrapolate mountlist to include RAID partitions,"
440echo "extrapolate it to include the following LVM drives and partitions:-"
441PrettifyList ">>>>> " "$all_lvm_drives_and_partitions"
442echo "To get started, type:-"
443if [ $lvmversion = 2 ]; then
444 echo "(insmod dm-mod)"
445 echo "(insmod dm_mod)"
446else
447 echo "(insmod lvm-mod)"
448fi
449echo "# $LVMCMD vgchange -an"
450for i in `ListAllPhysicalVolumes` ; do
451 echo "# echo y | $LVMCMD pvcreate -ff $i"
452done
453echo "# $LVMCMD vgscan"
454echo ""
455echo "Create and activate the VG's (volume groups)."
456all_volume_groups=`ListAllVolumeGroups`
457for current_VG in $all_volume_groups ; do
458 if [ $lvmversion -ne 2 ]; then
459 echo "# rm -Rf /dev/$current_VG"
460 fi
461 ProcessVolumeGroup $current_VG
462done
463echo ""
464echo "Finally, create the LV's (logical volumes)."
465all_logical_volumes=`ListAllLogicalVolumesSortedBydm`
466for current_LV in $all_logical_volumes ; do
467 ProcessLogicalVolume $current_LV
468done
469echo ""
470echo "# $LVMCMD vgscan"
471echo "Now you may format the LV's:-"
472for i in `ListAllLogicalVolumes` ; do
473 echo "(mkfs -t foo $i or something like that)"
474done
475rm -f $MINDI_TMP/excludedvgs
476WriteShutdownScript
477if [ _"$STDALONE" = _"true" ]; then
478 rm -rf $MINDI_TMP
479fi
480exit 0
481
482
483
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