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#!/bin/bash
# We use some bash-isms (getopts?)
# Copyright (C) 2007-2017 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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"
GREP="grep"
DATE="date"
BASENAME="basename"
UDEVADM="udevadm"
UNAME="uname"
TR="tr"
SOCAT="socat" # either socat or nc is needed for dumping lvmetad state
NC="nc"
if test "yes" = yes; then
DDFLAGS='iflag=direct oflag=direct'
else
DDFLAGS=
fi
# user may override lvm and dmsetup location by setting LVM_BINARY
# and DMSETUP_BINARY respectively
LVM=${LVM_BINARY-lvm}
DMSETUP=${DMSETUP_BINARY-dmsetup}
LVMETAD_SOCKET=${LVM_LVMETAD_SOCKET-/var/run/lvm/lvmetad.socket}
LVMPOLLD_SOCKET=${LVM_LVMPOLLD_SOCKET-/var/run/lvm/lvmpolld.socket}
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 " -c if running clvmd, gather cluster data as well"
echo " -d <directory> dump into a directory instead of tarball"
echo " -l gather lvmetad state if running"
echo " -p gather lvmpolld state if running"
echo " -m gather LVM metadata from the PVs"
echo " -s gather system info and context"
echo " -u gather udev info and context"
echo ""
exit 1
}
advanced=0
clustered=0
metadata=0
sysreport=0
udev=0
while getopts :acd:hlpmus opt; do
case $opt in
a) advanced=1 ;;
c) clustered=1 ;;
d) userdir=$OPTARG ;;
h) usage ;;
l) lvmetad=1 ;;
p) lvmpolld=1 ;;
m) metadata=1 ;;
s) sysreport=1 ;;
u) udev=1 ;;
:) echo "$0: $OPTARG requires a value:"; usage ;;
\?) echo "$0: unknown option $OPTARG"; usage ;;
*) usage ;;
esac
done
NOW=$("$DATE" -u +%G%m%d%k%M%S | "$TR" -d ' ')
if test -n "$userdir"; then
dir=$userdir
else
dirbase="lvmdump-$HOSTNAME-$NOW"
dir="$HOME/$dirbase"
fi
if test -d "$dir" ; then
(shopt -s nullglob dotglob; test -r "$dir" -a -w "$dir" -a -x "$dir" && cd "$dir" && files=(*) && ((! ${#files[@]}))) || \
die 5 "Fatal: directory $dir already exists and is not empty or inaccessible"
else
test -e "$dir" && die 3 "Fatal: $dir already exists"
"$MKDIR" -p "$dir" || die 4 "Fatal: could not create $dir"
fi
log="$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 "\"$LVM\" lvs -a -H -o +devices,kernel_major,kernel_minor >> \"$dir/lvs\" 2>> \"$log\""
myecho " pvs..."
log "\"$LVM\" pvs -a -o +major,minor -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 "$i"|tr "[:lower:]" "[:upper:]")
echo "$cap_i:"
echo "----------------------------------"
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
} >> "$dir/cluster_info"
fi
myecho "Gathering LVM & device-mapper version info..."
{
echo "LVM VERSION:"
"$LVM" lvs --version
echo "DEVICE MAPPER VERSION:"
"$DMSETUP" --version
echo "KERNEL VERSION:"
"$UNAME" -a
echo "DM TARGETS 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\""
# cat as workaround to avoid tty ioctl (selinux)
log "\"$DMSETUP\" ls --tree 2>> \"$log\" | cat >> \"$dir/dmsetup_ls_tree\""
myecho "Gathering process info..."
log "$PS alx >> \"$dir/ps_info\" 2>> \"$log\""
myecho "Gathering console messages..."
log "$TAIL -n 75 /var/log/messages >> \"$dir/messages\" 2>> \"$log\""
myecho "Gathering /etc/lvm info..."
log "$LS -laR /etc/lvm >> \"$dir/etc_lvm_listing\" 2>> \"$log\""
log "$CP -RL --preserve=all /etc/lvm \"$dir/lvm\" 2>> \"$log\""
log "$LVM dumpconfig --type diff --file \"$dir/config_diff\" 2>> \"$log\""
log "$LVM dumpconfig --type missing --file \"$dir/config_missing\" 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\" $DDFLAGS bs=512 count=$pe_start 2>> \"$log\""
done
fi
if (( sysreport )); then
myecho "Gathering system info..."
sysreport_dir="$dir/sysreport"
log_lines=10000
SYSTEMCTL=$(which systemctl 2>> "$log")
JOURNALCTL=$(which journalctl 2>> "$log")
LSBLK=$(which lsblk 2>> "$log")
log "$MKDIR -p \"$sysreport_dir\""
if test -z "LSBLK"; then
myecho "WARNING: lsblk not found"
else
if "$LSBLK" --help | "$GREP" -- --output-all >/dev/null; then
log "$LSBLK -O >> \"$sysreport_dir/lsblk_O\""
else
log "$LSBLK >> \"$sysreport_dir/lsblk\""
fi
if "$LSBLK" --help | "$GREP" -- --inverse >/dev/null; then
log "$LSBLK -s >> \"$sysreport_dir/lsblk_s\""
fi
fi
if test -z "$SYSTEMCTL"; then
myecho "WARNING: systemctl not found"
elif test -z "$JOURNALCTL"; then
myecho "WARNING: journalctl not found"
else
log "$JOURNALCTL -b --no-pager -o short-precise > \"$sysreport_dir/journal_content\" 2>> \"$log\""
log "$SYSTEMCTL status -l --no-pager -n $log_lines -o short-precise dm-event.socket dm-event.service \
lvm2-monitor.service \
lvm2-lvmetad.socket lvm2-lvmetad.service \
lvm2-lvmpolld.socket lvm2-lvmpolld.service \
lvm2-cluster-activation.service \
lvm2-clvmd.service \
lvm2-cmirrord.service \
lvm2-activation-early.service \
lvm2-activation.service \
lvm2-activation-net.service \
> \"$sysreport_dir/systemd_lvm2_services_status\" 2>> \"$log\""
log "$SYSTEMCTL list-units -l -a --no-legend --no-pager > \"$sysreport_dir/systemd_unit_list\" 2>> \"$log\""
for unit in $("$GREP" lvm2-pvscan "$sysreport_dir/systemd_unit_list" | cut -d " " -f 1); do
log "$SYSTEMCTL status -l --no-pager -n $log_lines -o short-precise $unit >> \"$sysreport_dir/systemd_lvm2_pvscan_service_status\""
done
fi
fi
if (( udev )); then
myecho "Gathering udev info..."
udev_dir="$dir/udev"
log "$MKDIR -p \"$udev_dir\""
log "$UDEVADM info --version >> \"$udev_dir/version\" 2>> \"$log\""
log "$UDEVADM info --export-db >> \"$udev_dir/db\" 2>> \"$log\""
log "$CP -a /etc/udev/udev.conf \"$udev_dir/conf\" 2>> \"$log\""
log "$LS -la /lib/udev >> \"$udev_dir/lib_dir\" 2>> \"$log\""
log "$CP -RL --preserve=all /etc/udev/rules.d \"$udev_dir/rules_etc\" 2>> \"$log\""
log "$CP -RL --preserve=all /lib/udev/rules.d \"$udev_dir/rules_lib\" 2>> \"$log\""
fi
if (( lvmetad )); then
(echo 'request="dump"'; echo '##') | {
if type -p "$SOCAT" >& /dev/null; then
echo "$SOCAT unix-connect:$LVMETAD_SOCKET -" >> "$log"
"$SOCAT" "unix-connect:$LVMETAD_SOCKET" - 2>> "$log"
elif echo | "$NC" -U "$LVMETAD_SOCKET"; then
echo "$NC -U $LVMETAD_SOCKET" >> "$log"
"$NC" -U "$LVMETAD_SOCKET" 2>> "$log"
else
myecho "WARNING: Neither socat nor nc -U seems to be available." 1>&2
echo "# DUMP FAILED"
return 1
fi
} > "$dir/lvmetad.txt"
fi
if (( lvmpolld )); then
(echo 'request="dump"'; echo '##') | {
if type -p "$SOCAT" >& /dev/null; then
echo "$SOCAT unix-connect:$LVMPOLLD_SOCKET -" >> "$log"
"$SOCAT" "unix-connect:$LVMPOLLD_SOCKET" - 2>> "$log"
elif echo | "$NC" -U "$LVMPOLLD_SOCKET"; then
echo "$NC -U $LVMPOLLD_SOCKET" >> "$log"
"$NC" -U "$LVMPOLLD_SOCKET" 2>> "$log"
else
myecho "WARNING: Neither socat nor nc -U seems to be available." 1>&2
echo "# DUMP FAILED"
return 1
fi
} > "$dir/lvmpolld.txt"
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