scripts/lvmdump.sh

   1 #!/bin/bash
   2 # We use some bash-isms (getopts?)
   3
   4 # Copyright (C) 2007-2010 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" version >& /dev/null || 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 warnings() {
 103         if test "$UID" != "0" && test "$EUID" != "0"; then
 104                 myecho "WARNING! Running as non-privileged user, dump is likely incomplete!"
 105         elif test "$DMSETUP" = ":"; then
 106                 myecho "WARNING! Could not run dmsetup, dump is likely incomplete."
 107         fi
 108 }
 109
 110 warnings
 111
 112 myecho "Creating dump directory: $dir"
 113 echo " "
 114
 115 if (( $advanced )); then
 116         myecho "Gathering LVM volume info..."
 117
 118         myecho "  vgscan..."
 119         log "\"$LVM\" vgscan -vvvv >> \"$dir/vgscan\" 2>&1"
 120
 121         myecho "  pvscan..."
 122         log "\"$LVM\" pvscan -v >> \"$dir/pvscan\" 2>> \"$log\""
 123
 124         myecho "  lvs..."
 125         log "\"$LVM\" lvs -a -o +devices >> \"$dir/lvs\" 2>> \"$log\""
 126
 127         myecho "  pvs..."
 128         log "\"$LVM\" pvs -a -v >> \"$dir/pvs\" 2>> \"$log\""
 129
 130         myecho "  vgs..."
 131         log "\"$LVM\" vgs -v >> \"$dir/vgs\" 2>> \"$log\""
 132 fi
 133
 134 if (( $clustered )); then
 135         myecho "Gathering cluster info..."
 136
 137         {
 138         for i in nodes status services; do
 139                 cap_i=$(echo $i|tr a-z A-Z)
 140                 printf "$cap_i:\n----------------------------------\n"
 141                 log "cman_tool $i 2>> \"$log\""
 142                 echo
 143         done
 144
 145         echo "LOCKS:"
 146         echo "----------------------------------"
 147         if [ -f /proc/cluster/dlm_locks ]
 148         then
 149                 echo clvmd > /proc/cluster/dlm_locks
 150                 cat /proc/cluster/dlm_locks
 151                 echo
 152                 echo "RESOURCE DIR:"
 153                 cat /proc/cluster/dlm_dir
 154                 echo
 155                 echo "DEBUG LOG:"
 156                 cat /proc/cluster/dlm_debug
 157                 echo
 158         fi
 159         if [ -f /debug/dlm/clvmd ]
 160         then
 161                 cat /debug/dlm/clvmd
 162                 echo
 163                 echo "WAITERS:"
 164                 cat /debug/dlm/clvmd_waiters
 165                 echo
 166                 echo "MASTER:"
 167                 cat /debug/dlm/clvmd_master
 168         fi
 169         } >> $dir/cluster_info
 170 fi
 171
 172 myecho "Gathering LVM & device-mapper version info..."
 173 echo "LVM VERSION:" >> "$dir/versions"
 174 "$LVM" lvs --version >> "$dir/versions" 2>> "$log"
 175 echo "DEVICE MAPPER VERSION:" >> "$dir/versions"
 176 "$DMSETUP" --version >> "$dir/versions" 2>> "$log"
 177 echo "KERNEL VERSION:" >> "$dir/versions"
 178 "$UNAME" -a >> "$dir/versions" 2>> "$log"
 179 echo "DM TARGETS VERSIONS:" >> "$dir/versions"
 180 "$DMSETUP" targets >> "$dir/versions" 2>> "$log"
 181
 182 myecho "Gathering dmsetup info..."
 183 log "\"$DMSETUP\" info -c >> \"$dir/dmsetup_info\" 2>> \"$log\""
 184 log "\"$DMSETUP\" table >> \"$dir/dmsetup_table\" 2>> \"$log\""
 185 log "\"$DMSETUP\" status >> \"$dir/dmsetup_status\" 2>> \"$log\""
 186
 187 # cat as workaround to avoid tty ioctl (selinux)
 188 log "\"$DMSETUP\" ls --tree 2>> \"$log\" | cat >> \"$dir/dmsetup_ls_tree\""
 189
 190 myecho "Gathering process info..."
 191 log "$PS alx >> \"$dir/ps_info\" 2>> \"$log\""
 192
 193 myecho "Gathering console messages..."
 194 log "$TAIL -n 75 /var/log/messages >> \"$dir/messages\" 2>> \"$log\""
 195
 196 myecho "Gathering /etc/lvm info..."
 197 log "$CP -a /etc/lvm \"$dir/lvm\" 2>> \"$log\""
 198
 199 myecho "Gathering /dev listing..."
 200 log "$LS -laR /dev >> \"$dir/dev_listing\" 2>> \"$log\""
 201
 202 myecho "Gathering /sys/block listing..."
 203 log "$LS -laR /sys/block >> \"$dir/sysblock_listing\"  2>> \"$log\""
 204 log "$LS -laR /sys/devices/virtual/block >> \"$dir/sysblock_listing\"  2>> \"$log\""
 205
 206 if (( $metadata )); then
 207         myecho "Gathering LVM metadata from Physical Volumes..."
 208
 209         log "$MKDIR -p \"$dir/metadata\""
 210
 211         pvs="$("$LVM" pvs --separator , --noheadings --units s --nosuffix -o \
 212             name,pe_start 2>> "$log" | $SED -e 's/^ *//')"
 213         for line in $pvs
 214         do
 215                 test -z "$line" && continue
 216                 pv="$(echo $line | $CUT -d, -f1)"
 217                 pe_start="$(echo $line | $CUT -d, -f2)"
 218                 name="$($BASENAME "$pv")"
 219                 myecho "  $pv"
 220                 log "$DD if=$pv \"of=$dir/metadata/$name\" bs=512 count=$pe_start 2>> \"$log\""
 221         done
 222 fi
 223
 224 if test -z "$userdir"; then
 225         lvm_dump="$dirbase.tgz"
 226         myecho "Creating report tarball in $HOME/$lvm_dump..."
 227 fi
 228
 229 warnings
 230
 231 if test -z "$userdir"; then
 232         cd "$HOME"
 233         "$TAR" czf "$lvm_dump" "$dirbase" 2>/dev/null
 234         "$RM" -rf "$dir"
 235 fi
 236
 237 exit 0