source: MondoRescue/branches/3.0/mindi/analyze-my-lvm@ 3028

Last change on this file since 3028 was 3016, checked in by Bruno Cornec, 12 years ago
  • Substitue a complex awk expression by a more simpler perl one in analyze-my-lvm
  • Fix a bug on RHEL 5 where lvdisplay doesn't support redirection. Adds a | cat in between, as was done for vgdisplay
  • Property svn:keywords set to Id
File size: 11.3 KB
Line 
1#!/bin/bash
2#
3# $Id: analyze-my-lvm 3016 2012-06-02 23:52:28Z bruno $
4#
5
6Die() {
7 echo "$1" >> /dev/stderr
8 exit -1
9}
10
11
12
13GetValueFromField() {
14 local res
15 grep -i "$2" "$1" | perl -pi -e 's/\s*(.*)\s\s\s+(.+)$/$2/;s/\sT[i]*B/t/;s/\sG[i]*B/g/;s/\sM[i]*B/m/;s/\sK[i]*B/k/'
16}
17
18
19GetLastBit() {
20 local i res
21 i=20
22 res=""
23 while [ ! "$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 "# $LVMCMD lvcreate$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.$$.txt
84 device=$1
85 output=""
86 $LVMCMD lvdisplay $device | cat > $fname
87 stripes=`GetValueFromField $fname "Stripes"`
88 stripesize=`GetValueFromField $fname "Stripe size (MByte)"`m
89 [ "$stripesize" = "m" ] && stripesize=`GetValueFromField $fname "Stripe size (KByte)"`k
90 [ "$stripesize" = "k" ] && stripesize=""
91 allocation=`GetValueFromField $fname "LV Size"`
92 [ ! "`echo "$allocation" | grep "[k,m,g,t]"`" ] && allocation="$allocation"m
93 if echo "$allocation" | grep -E '^.*g$' > /dev/null 2> /dev/null ; then
94 val=`echo "$allocation" | sed s/g//`
95 allocation=`echo "$val" | awk '{c=$1; printf "%d", c*1024;}'`m
96 fi
97 readahead=`GetValueFromField $fname "Read ahead sectors"`
98 rm -f $fname
99 [ "$stripes" ] && output="$output -i $stripes"
100 [ "$stripesize" ] && output="$output -I $stripesize"
101 [ "$allocation" ] && output="$output -L $allocation"
102 [ "$readahead" ] && output="$output -r $readahead"
103 echo "$output"
104}
105
106
107
108GenerateVgcreateParameters() {
109 local current_VG device fname incoming VG_info_file max_logical_volumes max_physical_volumes physical_extent_size output blanklines
110 current_VG=$1
111 VG_info_file=$MINDI_TMP/$$.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
129ProcessVolumeGroup() {
130 local current_VG physical_volumes i list_of_devices VG_params
131 current_VG=$1
132 if [ $lvmversion = 2 ]; then
133 VG_params=`GenerateVgcreateParameters $current_VG`
134 current_PVs=`$LVMCMD pvscan | grep " $current_VG " | awk '{print $2}' | tr '\n' ' '`
135 list_of_devices=$current_PVs
136 else
137 info_file=/proc/lvm/VGs/$current_VG/group
138 physical_volumes=`ls /proc/lvm/VGs/$current_VG/PVs`
139 VG_params=`GenerateVgcreateParameters $current_VG`
140 list_of_devices=""
141 for i in $physical_volumes ; do
142 fname=/proc/lvm/VGs/$current_VG/PVs/$i
143 device=`GetValueFromField $fname "name:"`
144 list_of_devices="$list_of_devices $device"
145 done
146 current_PVs=$list_of_devices
147 fi
148 l=""
149 if [ -f /etc/multipath.conf ]; then
150 # If multipath check which type of devide are given, mpath prefered
151 for d in $list_of_devices; do
152 l="$l `mindi --nolog --readalllink $d 2> /dev/null`"
153 l="$l `GiveMapperOfdm $d`"
154 done
155 list_of_devices="`echo $l | sort -u`"
156 fi
157
158 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
159 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
160 if [ "`echo " $list_of_devices" | grep " $ed"`" != "" ]; then
161 echo $current_VG >> $MINDI_TMP/excludedvgs
162 return
163 fi
164 done
165 fi
166 echo "# $LVMCMD vgcreate $current_VG$VG_params $current_PVs"
167 echo "# $LVMCMD vgchange -a y $current_VG"
168}
169
170
171
172ListAllPhysicalVolumes() {
173 if [ $lvmversion = 2 ]; then
174 $LVMCMD pvscan 2> /dev/null | grep 'PV' | grep -v unknown | awk '{print $2}' > $MINDI_TMP/pv.tmp
175 else
176 pvscan 2> /dev/null | grep '"' | cut -d'"' -f2 > $MINDI_TMP/pv.tmp
177 fi
178
179 rm -f $MINDI_TMP/pv.tmp2
180 for d in `cat $MINDI_TMP/pv.tmp`; do
181 # Skip devices excluded, coming from mondoarchive
182 skip=0
183 l=""
184 l="$l `mindi --nolog --readalllink $d 2> /dev/null`"
185 l="$l `GiveMapperOfdm $d`"
186 list_of_devices="`echo $l | sort -u`"
187 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
188 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
189 if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
190 skip=1
191 continue
192 fi
193 done
194 fi
195 if [ $skip -eq 1 ]; then
196 continue
197 fi
198 echo $d >> $MINDI_TMP/pv.tmp2
199 done
200
201 if [ -f /etc/multipath.conf ]; then
202 # If multipath check which type of devide are given, mpath prefered
203 if [ -f $MINDI_TMP/pv.tmp2 ]; then
204 l=""
205 for d in `cat $MINDI_TMP/pv.tmp2`; do
206 skip=0
207 l="$l `mindi --nolog --readalllink $d 2> /dev/null`"
208 l="$l `GiveMapperOfdm $d`"
209 list_of_devices="`echo $l | sort -u`"
210 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
211 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
212 if [ "`echo " $list_of_devices " | grep " $ed"`" != "" ]; then
213 skip=1
214 continue
215 fi
216 done
217 fi
218 if [ $skip -eq 1 ]; then
219 continue
220 fi
221 GiveMapperOfdm $d
222 done
223 fi
224 else
225 if [ -f $MINDI_TMP/pv.tmp2 ]; then
226 cat $MINDI_TMP/pv.tmp2
227 fi
228 fi
229 rm -f $MINDI_TMP/pv.tmp $MINDI_TMP/pv.tmp2
230}
231
232
233ListAllVolumeGroups() {
234 $LVMCMD vgdisplay 2> /dev/null | awk '/^ *VG Name/ {print $3;}'
235}
236
237GiveMapperOfdm () {
238
239major=`stat -L -c "%t" $1 2> /dev/null`
240minor=`stat -L -c "%T" $1 2> /dev/null`
241
242for i in `ls /dev/mapper/*`; do
243 mj=`stat -L -c "%t" $i`
244 mn=`stat -L -c "%T" $i`
245 if [ "$mj" = "$major" ] && [ "$mn" = "$minor" ]; then
246 echo "$i"
247 return
248 fi
249done
250echo $1
251}
252
253
254ListLvmDrivesAndPartitions() {
255 # We get partitions in this loop not devices
256 for d in `$LVMCMD vgdisplay -v 2> /dev/null | grep "PV Name" | sed 's/(#)//' | awk '{print $3}'`; do
257 # If multipath check which type of devices are given, mpath prefered
258 if [ -f /etc/multipath.conf ]; then
259 i=`GiveMapperOfdm $d`
260 rep=$i
261 else
262 rep=$d
263 fi
264 skip=0
265 if [ "$MINDI_EXCLUDE_DEVS" ] ; then
266 for ed in `echo $MINDI_EXCLUDE_DEVS | sed 's/|/ /g'`; do
267 if [ "`echo " $rep " | grep " $ed"`" != "" ]; then
268 skip=1
269 continue
270 fi
271 done
272 fi
273 if [ $skip -eq 1 ]; then
274 continue
275 fi
276 echo $rep
277 done
278}
279
280
281
282PrettifyList() {
283 local i
284 echo -en "$1"
285 for i in $2 ; do
286 echo -en "$i "
287 done
288 echo ""
289}
290
291ListAllLogicalVolumesSortedBydm() {
292 rm -f $MINDI_TMP/sorteddm
293 for d in `ListAllLogicalVolumes` ; do
294 dm=`mindi --nolog --readalllink $d 2> /dev/null | tail -1`
295 echo "$dm|$d" >> $MINDI_TMP/sorteddm
296 done
297 if [ -f $MINDI_TMP/sorteddm ]; then
298 sort -t'|' $MINDI_TMP/sorteddm | cut -d'|' -f2
299 fi
300}
301
302ListAllLogicalVolumes() {
303 if [ $lvmversion = 2 ]; then
304 $LVMCMD lvscan 2> /dev/null | grep "'" | grep -iw "ACTIVE" | cut -d"'" -f2
305 else
306 lvscan 2> /dev/null | grep '"' | grep -iw "ACTIVE" | cut -d'"' -f2
307 fi
308}
309
310
311
312WriteShutdownScript() {
313 local i
314 echo ""
315 echo "Finally, to shut down and delete the volumes, do this:-"
316 for i in `ListAllLogicalVolumes` ; do
317 echo "($LVMCMD lvremove -f $i)"
318 done
319 for i in `ListAllVolumeGroups` ; do
320 echo "($LVMCMD vgchange -a n $i)"
321 done
322 for i in `ListAllVolumeGroups` ; do
323 echo "($LVMCMD vgremove $i)"
324 done
325 if [ $lvmversion = 2 ]; then
326 echo "(rmmod dm-mod & rmmod dm_mod & )"
327 else
328 echo "(rmmod lvm-mod)"
329 fi
330}
331
332
333
334# -------------------------------- main -----------------------------------
335
336if [ "$1" = "--givemapperofdm" ] ; then
337 shift
338 if [ _"$1" != _"" ] ; then
339 GiveMapperOfdm $1
340 fi
341 exit 0
342fi
343
344
345which lvmdiskscan 2>/dev/null 2>&1 || Die "lvmdiskscan not found. Won't handle LVM."
346if [ -e "/proc/lvm/global" ] && [ "`tr -s '\t' ' ' < /proc/lvm/global | grep "0 VGs 0 PVs 0 LVs"`" != "" ]; then
347 exit 1
348fi
349
350if [ _"$MINDI_TMP" = _"" ]; then
351 # Launched stdalone, so create a temp dir
352 STDALONE="true"
353 MINDI_TMP=`mktemp -d $TMPDIR/mindi.XXXXXXXXXX`
354 if [ $? -ne 0 ]; then
355 df $TMPDIR
356 Die "Unable to create a temporary directory ! Check space on $TMPDIR"
357 fi
358 if [ _"$MINDI_TMP" = _"" ]; then
359 Die "MINDI_TMP is empty, aborting"
360 fi
361 if [ _"$MINDI_TMP" = _"/" ]; then
362 Die "MINDI_TMP is /, aborting"
363 fi
364fi
365
366# Older lvmdiskscan use --help, newer --version
367lvmopt="--help"
368lvmdiskscan $lvmopt 2>&1 | grep -q -- "--version"
369if [ $? -eq 0 ]; then
370 lvmopt="--version"
371fi
372
373
374lvmversion=`lvmdiskscan --help 2>&1 |
375 grep -E "Logical Volume Manager|LVM version:" |
376 cut -d: -f2 | cut -d. -f1 |
377 awk '{print $NF}' |
378 sed -e 's/ //g'`
379
380if which lvm 2>/dev/null; then
381 version=`lvm version | grep "LVM version" | awk '{print $3}'`
382 i="`echo "$version" | cut -d'.' -f1`"
383 echo "i=$i"
384 if [ "$i" -ge "2" ] ; then
385 lvmversion=2
386 fi
387fi
388
389if [ $lvmversion = 2 ]; then
390 echo "LVM version >= 2.0 found."
391 LVMCMD="lvm"
392else
393 LVMCMD=""
394fi
395
396rm -f $MINDI_TMP/excludedvgs
397all_lvm_drives_and_partitions=`ListLvmDrivesAndPartitions`
398echo "Just before you extrapolate mountlist to include RAID partitions,"
399echo "extrapolate it to include the following LVM drives and partitions:-"
400PrettifyList ">>>>> " "$all_lvm_drives_and_partitions"
401echo "To get started, type:-"
402if [ $lvmversion = 2 ]; then
403 echo "(insmod dm-mod)"
404 echo "(insmod dm_mod)"
405else
406 echo "(insmod lvm-mod)"
407fi
408echo "# $LVMCMD vgchange -an"
409for i in `ListAllPhysicalVolumes` ; do
410 echo "# echo y | $LVMCMD pvcreate -ff $i"
411done
412echo "# $LVMCMD vgscan"
413echo ""
414echo "Create and activate the VG's (volume groups)."
415all_volume_groups=`ListAllVolumeGroups`
416for current_VG in $all_volume_groups ; do
417 if [ $lvmversion -ne 2 ]; then
418 echo "# rm -Rf /dev/$current_VG"
419 fi
420 ProcessVolumeGroup $current_VG
421done
422echo ""
423echo "Finally, create the LV's (logical volumes)."
424all_logical_volumes=`ListAllLogicalVolumesSortedBydm`
425for current_LV in $all_logical_volumes ; do
426 ProcessLogicalVolume $current_LV
427done
428echo ""
429echo "# $LVMCMD vgscan"
430echo "Now you may format the LV's:-"
431for i in `ListAllLogicalVolumes` ; do
432 echo "(mkfs -t foo $i or something like that)"
433done
434rm -f $MINDI_TMP/excludedvgs
435WriteShutdownScript
436if [ _"$STDALONE" = _"true" ]; then
437 rm -rf $MINDI_TMP
438fi
439exit 0
440
441
442
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