scripts/lvm_dump.sh

   1 #!/bin/bash
   2 # We use some bash-isms (getopts?)
   3
   4 # Copyright (C) 2007 Red Hat, Inc. All rights reserved.
   5 #
   6 # This file is part of LVM2.
   7 #
   8 # This copyrighted material is made available to anyone wishing to use,
   9 # modify, copy, or redistribute it subject to the terms and conditions
  10 # of the GNU General Public License v.2.
  11 #
  12 # You should have received a copy of the GNU General Public License
  13 # along with this program; if not, write to the Free Software Foundation,
  14 # Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15
  16 # lvm_dump: This script is used to collect pertinent information for
  17 #           the debugging of lvm issues.
  18
  19 # following external commands are used throughout the script
  20 # echo and test are internal in bash at least
  21 MKDIR=mkdir # need -p
  22 TAR=tar # need czf
  23 RM=rm # need -rf
  24 CP=cp
  25 TAIL=tail # we need -n
  26 LS=ls # need -la
  27 PS=ps # need alx
  28 SED=sed
  29 DD=dd
  30 CUT=cut
  31 DATE=date
  32 BASENAME=basename
  33 UNAME=uname
  34
  35 # user may override lvm and dmsetup location by setting LVM_BINARY
  36 # and DMSETUP_BINARY respectively
  37 LVM=${LVM_BINARY-lvm}
  38 DMSETUP=${DMSETUP_BINARY-dmsetup}
  39
  40 die() {
  41     code=$1; shift
  42     echo "$@" 1>&2
  43     exit $code
  44 }
  45
  46 "$LVM" version >& /dev/null || die 2 "Could not run lvm binary '$LVM'"
  47 "$DMSETUP" help >& /dev/null || die 2 "Fatal: could not run dmsetup binary '$DMSETUP'"
  48
  49 function usage {
  50         echo "$0 [options]"
  51         echo "    -h print this message"
  52         echo "    -a advanced collection - warning: if lvm is already hung,"
  53         echo "       then this script may hang as well if -a is used"
  54         echo "    -m gather LVM metadata from the PVs"
  55         echo "    -d <directory> dump into a directory instead of tarball"
  56         echo "    -c if running clvmd, gather cluster data as well"
  57         echo ""
  58
  59         exit 1
  60 }
  61
  62 advanced=0
  63 clustered=0
  64 metadata=0
  65 while getopts :acd:hm opt; do
  66         case $opt in
  67                 s)      sysreport=1 ;;
  68                 a)      advanced=1 ;;
  69                 c)      clustered=1 ;;
  70                 d)      userdir=$OPTARG ;;
  71                 h)      usage ;;
  72                 m)      metadata=1 ;;
  73                 :)      echo "$0: $OPTARG requires a value:"; usage ;;
  74                 \?)     echo "$0: unknown option $OPTARG"; usage ;;
  75                 *)      usage ;;
  76         esac
  77 done
  78
  79 NOW=`$DATE -u +%G%m%d%k%M%S | /usr/bin/tr -d ' '`
  80 if test -n "$userdir"; then
  81         dir="$userdir"
  82 else
  83         dirbase="lvmdump-$HOSTNAME-$NOW"
  84         dir="$HOME/$dirbase"
  85 fi
  86
  87 test -e $dir && die 3 "Fatal: $dir already exists"
  88 $MKDIR -p $dir || die 4 "Fatal: could not create $dir"
  89
  90 log="$dir/lvmdump.log"
  91
  92 myecho() {
  93         echo "$@"
  94         echo "$@" >> $log
  95 }
  96
  97 log() {
  98         echo "$@" >> $log
  99         eval "$@"
 100 }
 101
 102 echo " "
 103 myecho "Creating dump directory: $dir"
 104 echo " "
 105
 106 if (( $advanced )); then
 107         myecho "Gathering LVM volume info..."
 108
 109         myecho "  vgscan..."
 110         log "$LVM vgscan -vvvv > $dir/vgscan 2>&1"
 111
 112         myecho "  pvscan..."
 113         log "$LVM pvscan -v >> $dir/pvscan 2>> $log"
 114
 115         myecho "  lvs..."
 116         log "$LVM lvs -a -o +devices >> $dir/lvs 2>> $log"
 117
 118         myecho "  pvs..."
 119         log "$LVM pvs -a -v > $dir/pvs 2>> $log"
 120
 121         echo "  vgs..."
 122         log "$LVM vgs -v > $dir/vgs 2>> $log"
 123 fi
 124
 125 if (( $clustered )); then
 126         myecho "Gathering cluster info..."
 127
 128         {
 129         for i in nodes status services; do
 130                 cap_i=$(echo $i|tr a-z A-Z)
 131                 printf "$cap_i:\n----------------------------------\n"
 132                 log "cman_tool $i 2>> $log"
 133                 echo
 134         done
 135
 136         echo "LOCKS:"
 137         echo "----------------------------------"
 138         if [ -f /proc/cluster/dlm_locks ]
 139         then
 140                 echo clvmd > /proc/cluster/dlm_locks
 141                 cat /proc/cluster/dlm_locks
 142                 echo
 143                 echo "RESOURCE DIR:"
 144                 cat /proc/cluster/dlm_dir
 145                 echo
 146                 echo "DEBUG LOG:"
 147                 cat /proc/cluster/dlm_debug
 148                 echo
 149         fi
 150         if [ -f /debug/dlm/clvmd ]
 151         then
 152                 cat /debug/dlm/clvmd
 153                 echo
 154                 echo "WAITERS:"
 155                 cat /debug/dlm/clvmd_waiters
 156                 echo
 157                 echo "MASTER:"
 158                 cat /debug/dlm/clvmd_master
 159         fi
 160         } > $dir/cluster_info
 161 fi
 162
 163 myecho "Gathering LVM & device-mapper version info..."
 164 echo "LVM VERSION:" > $dir/versions
 165 "$LVM" lvs --version >> $dir/versions 2>> $log
 166 echo "DEVICE MAPPER VERSION:" >> $dir/versions
 167 "$DMSETUP" --version >> $dir/versions 2>> $log
 168 echo "KERNEL VERSION:" >> $dir/versions
 169 "$UNAME" -a >> $dir/versions 2>> $log
 170 echo "DM TARGETS VERSIONS:" >> $dir/versions
 171 "$DMSETUP" targets >> $dir/versions 2>> $log
 172
 173 myecho "Gathering dmsetup info..."
 174 log "$DMSETUP info -c > $dir/dmsetup_info 2>> $log"
 175 log "$DMSETUP table > $dir/dmsetup_table 2>> $log"
 176 log "$DMSETUP status > $dir/dmsetup_status 2>> $log"
 177
 178 myecho "Gathering process info..."
 179 log "$PS alx > $dir/ps_info 2>> $log"
 180
 181 myecho "Gathering console messages..."
 182 log "$TAIL -n 75 /var/log/messages > $dir/messages 2>> $log"
 183
 184 myecho "Gathering /etc/lvm info..."
 185 log "$CP -a /etc/lvm $dir/lvm 2>> $log"
 186
 187 myecho "Gathering /dev listing..."
 188 log "$LS -laR /dev > $dir/dev_listing 2>> $log"
 189
 190 myecho "Gathering /sys/block listing..."
 191 log "$LS -laR /sys/block > $dir/sysblock_listing"
 192
 193 if (( $metadata )); then
 194         myecho "Gathering LVM metadata from Physical Volumes..."
 195
 196         log "$MKDIR -p $dir/metadata"
 197
 198         pvs="$($LVM pvs --separator , --noheadings --units s --nosuffix -o \
 199             name,pe_start 2>> $log | $SED -e 's/^ *//')"
 200         for line in "$pvs"
 201         do
 202                 test -z "$line" && continue
 203                 pv="$(echo $line | $CUT -d, -f1)"
 204                 pe_start="$(echo $line | $CUT -d, -f2)"
 205                 name="$($BASENAME $pv)"
 206                 myecho "  $pv"
 207                 log "$DD if=$pv of=$dir/metadata/$name bs=512 count=$pe_start 2>> $log"
 208         done
 209 fi
 210
 211 if test -z "$userdir"; then
 212         lvm_dump="$dirbase.tgz"
 213         myecho "Creating report tarball in $HOME/$lvm_dump..."
 214         cd "$HOME"
 215         "$TAR" czf $lvm_dump $dirbase 2>/dev/null
 216         "$RM" -rf $dir
 217 fi
 218
 219 if test "$UID" != "0" && test "$EUID" != "0"; then
 220         myecho
 221         myecho "WARNING! Running as non-privileged user, dump is likely incomplete!"
 222         myecho
 223 fi
 224
 225 exit 0
 226