scripts/lvm_dump.sh

   1 #!/bin/bash
   2 #
   3 # lvm_dump: This script is used to collect pertinent information for
   4 #           the debugging of lvm issues.
   5 #
   6
   7 function usage {
   8         echo "$0 [options]"
   9         echo "    -h print this message"
  10         echo "    -a advanced collection - warning: if lvm is already hung,"
  11         echo "       then this script may hang as well if -a is used"
  12         echo "    -m gather LVM metadata from the PVs"
  13         echo "    -d dump directory to place data in (default=/tmp/lvm_dump.\$\$)"
  14         echo "    -c if running clvmd, gather cluster data as well"
  15         echo ""
  16
  17         exit 1
  18 }
  19
  20 advanced=0
  21 clustered=0
  22 metadata=0
  23 while getopts :acd:hm opt; do
  24         case $opt in
  25                 a)      advanced=1 ;;
  26                 c)      clustered=1 ;;
  27                 d)      lvm_dir=$OPTARG ;;
  28                 h)      usage ;;
  29                 m)      metadata=1 ;;
  30                 :)      echo "$0: $OPTARG requires a value:"; usage ;;
  31                 \?)     echo "$0: unknown option $OPTARG"; usage ;;
  32                 *)      usage ;;
  33         esac
  34 done
  35
  36 dir=`mktemp -d -p /tmp lvm_dump.XXXXXX` || exit 2
  37 lvm_dir="$dir/lvm_dump"
  38
  39 echo " "
  40 echo "Creating dump directory: $lvm_dir"
  41 echo " "
  42
  43 mkdir -p $lvm_dir || exit 3
  44
  45 if (( $advanced )); then
  46         echo "Gathering LVM volume info..."
  47
  48         echo "  vgscan..."
  49         vgscan -vvvv > $lvm_dir/vgscan 2>&1
  50
  51         echo "  pvscan..."
  52         pvscan -v >> $lvm_dir/pvscan 2>/dev/null
  53
  54         echo "  lvs..."
  55         lvs -a -o +devices >> $lvm_dir/lvs 2>/dev/null
  56
  57         echo "  pvs..."
  58         pvs -a -v > $lvm_dir/pvs 2>/dev/null
  59
  60         echo "  vgs..."
  61         vgs -v > $lvm_dir/vgs 2>/dev/null
  62 fi
  63
  64 if (( $clustered )); then
  65         echo "Gathering cluster info..."
  66         echo "STATUS: " > $lvm_dir/cluster_info
  67         echo "----------------------------------" >> $lvm_dir/cluster_info
  68         cman_tool status >> $lvm_dir/cluster_info
  69         echo " " >> $lvm_dir/lvm_info
  70
  71         echo "SERVICES: " >> $lvm_dir/cluster_info
  72         echo "----------------------------------" >> $lvm_dir/cluster_info
  73         cman_tool services >> $lvm_dir/cluster_info
  74         echo " " >> $lvm_dir/lvm_info
  75 fi
  76
  77 echo "Gathering LVM & device-mapper version info..."
  78 echo "LVM VERSION:" > $lvm_dir/versions
  79 lvs --version >> $lvm_dir/versions
  80 echo "DEVICE MAPPER VERSION:" >> $lvm_dir/versions
  81 dmsetup --version >> $lvm_dir/versions
  82
  83 echo "Gathering dmsetup info..."
  84 dmsetup info -c > $lvm_dir/dmsetup_info
  85 dmsetup table > $lvm_dir/dmsetup_table
  86 dmsetup status > $lvm_dir/dmsetup_status
  87
  88 echo "Gathering process info..."
  89 ps alx > $lvm_dir/ps_info
  90
  91 echo "Gathering console messages..."
  92 tail -n 75 /var/log/messages > $lvm_dir/messages
  93
  94 echo "Gathering /etc/lvm info..."
  95 cp -a /etc/lvm $lvm_dir/lvm
  96
  97 echo "Gathering /dev listing..."
  98 ls -la /dev > $lvm_dir/dev_listing
  99
 100 if (( $metadata )); then
 101         echo "Gathering LVM metadata from Physical Volumes..."
 102
 103         mkdir -p $lvm_dir/metadata
 104
 105         for pv in `pvs --noheadings -o name`
 106         do
 107                 echo "  $pv"
 108                 name=`basename $pv`
 109                 dd if=$pv of=$lvm_dir/metadata/$name bs=512 count=`pvs --noheadings --nosuffix --units s -o pe_start $pv | tr -d \ `
 110         done 2>/dev/null
 111 fi
 112
 113 lvm_dump=$lvm_dir.tgz
 114 echo "Creating tarball $lvm_dump..."
 115 tar czf $lvm_dump $lvm_dir 2>/dev/null
 116
 117 exit 0
 118