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#!/bin/bash
# We use some bash-isms (getopts?)
# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
#
# This file is part of LVM2.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# lvm_dump: This script is used to collect pertinent information for
# the debugging of lvm issues.
# following external commands are used throughout the script
# echo and test are internal in bash at least
MKDIR=mkdir # need -p
TAR=tar # need czf
RM=rm # need -rf
CP=cp
TAIL=tail # we need -n
LS=ls # need -la
PS=ps # need alx
SED=sed
DD=dd
CUT=cut
DATE=date
BASENAME=basename
UNAME=uname
# user may override lvm and dmsetup location by setting LVM_BINARY
# and DMSETUP_BINARY respectively
LVM=${LVM_BINARY-lvm}
DMSETUP=${DMSETUP_BINARY-dmsetup}
die() {
code=$1; shift
echo "$@" 1>&2
exit $code
}
"$LVM" version >& /dev/null || die 2 "Could not run lvm binary '$LVM'"
"$DMSETUP" version >& /dev/null || DMSETUP=:
function usage {
echo "$0 [options]"
echo " -h print this message"
echo " -a advanced collection - warning: if lvm is already hung,"
echo " then this script may hang as well if -a is used"
echo " -m gather LVM metadata from the PVs"
echo " -d <directory> dump into a directory instead of tarball"
echo " -c if running clvmd, gather cluster data as well"
echo ""
exit 1
}
advanced=0
clustered=0
metadata=0
while getopts :acd:hm opt; do
case $opt in
s) sysreport=1 ;;
a) advanced=1 ;;
c) clustered=1 ;;
d) userdir=$OPTARG ;;
h) usage ;;
m) metadata=1 ;;
:) echo "$0: $OPTARG requires a value:"; usage ;;
\?) echo "$0: unknown option $OPTARG"; usage ;;
*) usage ;;
esac
done
NOW=`$DATE -u +%G%m%d%k%M%S | /usr/bin/tr -d ' '`
if test -n "$userdir"; then
dir="$userdir"
else
dirbase="lvmdump-$HOSTNAME-$NOW"
dir="$HOME/$dirbase"
fi
test -e $dir && die 3 "Fatal: $dir already exists"
$MKDIR -p $dir || die 4 "Fatal: could not create $dir"
log="$dir/lvmdump.log"
myecho() {
echo "$@"
echo "$@" >> "$log"
}
log() {
echo "$@" >> "$log"
eval "$@"
}
warnings() {
if test "$UID" != "0" && test "$EUID" != "0"; then
myecho "WARNING! Running as non-privileged user, dump is likely incomplete!"
elif test "$DMSETUP" = ":"; then
myecho "WARNING! Could not run dmsetup, dump is likely incomplete."
fi
}
warnings
myecho "Creating dump directory: $dir"
echo " "
if (( $advanced )); then
myecho "Gathering LVM volume info..."
myecho " vgscan..."
log "\"$LVM\" vgscan -vvvv > \"$dir/vgscan\" 2>&1"
myecho " pvscan..."
log "\"$LVM\" pvscan -v >> \"$dir/pvscan\" 2>> \"$log\""
myecho " lvs..."
log "\"$LVM\" lvs -a -o +devices >> \"$dir/lvs\" 2>> \"$log\""
myecho " pvs..."
log "\"$LVM\" pvs -a -v > \"$dir/pvs\" 2>> \"$log\""
myecho " vgs..."
log "\"$LVM\" vgs -v > \"$dir/vgs\" 2>> \"$log\""
fi
if (( $clustered )); then
myecho "Gathering cluster info..."
{
for i in nodes status services; do
cap_i=$(echo $i|tr a-z A-Z)
printf "$cap_i:\n----------------------------------\n"
log "cman_tool $i 2>> \"$log\""
echo
done
echo "LOCKS:"
echo "----------------------------------"
if [ -f /proc/cluster/dlm_locks ]
then
echo clvmd > /proc/cluster/dlm_locks
cat /proc/cluster/dlm_locks
echo
echo "RESOURCE DIR:"
cat /proc/cluster/dlm_dir
echo
echo "DEBUG LOG:"
cat /proc/cluster/dlm_debug
echo
fi
if [ -f /debug/dlm/clvmd ]
then
cat /debug/dlm/clvmd
echo
echo "WAITERS:"
cat /debug/dlm/clvmd_waiters
echo
echo "MASTER:"
cat /debug/dlm/clvmd_master
fi
} > $dir/cluster_info
fi
myecho "Gathering LVM & device-mapper version info..."
echo "LVM VERSION:" > "$dir/versions"
"$LVM" lvs --version >> "$dir/versions" 2>> "$log"
echo "DEVICE MAPPER VERSION:" >> "$dir/versions"
"$DMSETUP" --version >> "$dir/versions" 2>> "$log"
echo "KERNEL VERSION:" >> "$dir/versions"
"$UNAME" -a >> "$dir/versions" 2>> "$log"
echo "DM TARGETS VERSIONS:" >> "$dir/versions"
"$DMSETUP" targets >> "$dir/versions" 2>> "$log"
myecho "Gathering dmsetup info..."
log "\"$DMSETUP\" info -c > \"$dir/dmsetup_info\" 2>> \"$log\""
log "\"$DMSETUP\" table > \"$dir/dmsetup_table\" 2>> \"$log\""
log "\"$DMSETUP\" status > \"$dir/dmsetup_status\" 2>> \"$log\""
myecho "Gathering process info..."
log "$PS alx > \"$dir/ps_info\" 2>> \"$log\""
myecho "Gathering console messages..."
log "$TAIL -n 75 /var/log/messages > \"$dir/messages\" 2>> \"$log\""
myecho "Gathering /etc/lvm info..."
log "$CP -a /etc/lvm \"$dir/lvm\" 2>> \"$log\""
myecho "Gathering /dev listing..."
log "$LS -laR /dev > \"$dir/dev_listing\" 2>> \"$log\""
myecho "Gathering /sys/block listing..."
log "$LS -laR /sys/block > \"$dir/sysblock_listing\" 2>> \"$log\""
log "$LS -laR /sys/devices/virtual/block >> \"$dir/sysblock_listing\" 2>> \"$log\""
if (( $metadata )); then
myecho "Gathering LVM metadata from Physical Volumes..."
log "$MKDIR -p \"$dir/metadata\""
pvs="$("$LVM" pvs --separator , --noheadings --units s --nosuffix -o \
name,pe_start 2>> "$log" | $SED -e 's/^ *//')"
for line in $pvs
do
test -z "$line" && continue
pv="$(echo $line | $CUT -d, -f1)"
pe_start="$(echo $line | $CUT -d, -f2)"
name="$($BASENAME "$pv")"
myecho " $pv"
log "$DD if=$pv \"of=$dir/metadata/$name\" bs=512 count=$pe_start 2>> \"$log\""
done
fi
if test -z "$userdir"; then
lvm_dump="$dirbase.tgz"
myecho "Creating report tarball in $HOME/$lvm_dump..."
fi
warnings
if test -z "$userdir"; then
cd "$HOME"
"$TAR" czf "$lvm_dump" "$dirbase" 2>/dev/null
"$RM" -rf "$dir"
fi
exit 0
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