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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 "$i"\|tr a-z A-Z) echo "$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

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