#!/bin/sh exec &> /dev/console . /lib/dracut-lib.sh . /lib/kdump-lib.sh if [ -f "$initdir/lib/dracut/no-emergency-shell" ]; then rm -f -- $initdir/lib/dracut/no-emergency-shell fi set -o pipefail KDUMP_PATH="/var/crash" CORE_COLLECTOR="" DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 1 -d 31" DMESG_COLLECTOR="/sbin/vmcore-dmesg" DEFAULT_ACTION="reboot -f" DATEDIR=`date +%Y.%m.%d-%T` HOST_IP='127.0.0.1' DUMP_INSTRUCTION="" SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa" KDUMP_SCRIPT_DIR="/kdumpscripts" DD_BLKSIZE=512 FINAL_ACTION="reboot -f" DUMP_RETVAL=0 conf_file="/etc/kdump.conf" KDUMP_PRE="" KDUMP_POST="" MOUNTS="" export PATH=$PATH:$KDUMP_SCRIPT_DIR do_dump() { local _ret eval $DUMP_INSTRUCTION _ret=$? if [ $_ret -ne 0 ]; then echo "kdump: saving vmcore failed" fi return $_ret } do_umount() { if [ -n "$MOUNTS" ]; then for mount in $MOUNTS; do ismounted $mount && umount -R $mount done fi } do_final_action() { do_umount eval $FINAL_ACTION } do_default_action() { wait_for_loginit eval $DEFAULT_ACTION } do_kdump_pre() { if [ -n "$KDUMP_PRE" ]; then "$KDUMP_PRE" fi } do_kdump_post() { if [ -n "$KDUMP_POST" ]; then "$KDUMP_POST" "$1" fi } add_dump_code() { DUMP_INSTRUCTION=$1 } # dump_fs dump_fs() { local _dev=$(findmnt -k -f -n -r -o SOURCE $1) local _mp=$(findmnt -k -f -n -r -o TARGET $1) echo "kdump: dump target is $_dev" if [ -z "$_mp" ]; then echo "kdump: error: Dump target $_dev is not mounted." return 1 fi MOUNTS="$MOUNTS $_mp" # Remove -F in makedumpfile case. We don't want a flat format dump here. [[ $CORE_COLLECTOR = *makedumpfile* ]] && CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e "s/-F//g"` echo "kdump: saving to $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/" mount -o remount,rw $_mp || return 1 mkdir -p $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR || return 1 save_vmcore_dmesg_fs ${DMESG_COLLECTOR} "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/" echo "kdump: saving vmcore" $CORE_COLLECTOR /proc/vmcore $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete || return 1 mv $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore sync echo "kdump: saving vmcore complete" return 0 } dump_raw() { local _raw=$1 [ -b "$_raw" ] || return 1 echo "kdump: saving to raw disk $_raw" if ! $(echo -n $CORE_COLLECTOR|grep -q makedumpfile); then _src_size=`ls -l /proc/vmcore | cut -d' ' -f5` _src_size_mb=$(($_src_size / 1048576)) monitor_dd_progress $_src_size_mb & fi echo "kdump: saving vmcore" $CORE_COLLECTOR /proc/vmcore | dd of=$_raw bs=$DD_BLKSIZE >> /tmp/dd_progress_file 2>&1 || return 1 sync echo "kdump: saving vmcore complete" return 0 } dump_ssh() { local _opt="-i $1 -o BatchMode=yes -o StrictHostKeyChecking=yes" local _dir="$KDUMP_PATH/$HOST_IP-$DATEDIR" local _host=$2 echo "kdump: saving to $_host:$_dir" cat /var/lib/random-seed > /dev/urandom ssh -q $_opt $_host mkdir -p $_dir || return 1 save_vmcore_dmesg_ssh ${DMESG_COLLECTOR} ${_dir} "${_opt}" $_host echo "kdump: saving vmcore" if [ "${CORE_COLLECTOR%%[[:blank:]]*}" = "scp" ]; then scp -q $_opt /proc/vmcore "$_host:$_dir/vmcore-incomplete" || return 1 ssh $_opt $_host "mv $_dir/vmcore-incomplete $_dir/vmcore" || return 1 else $CORE_COLLECTOR /proc/vmcore | ssh $_opt $_host "dd bs=512 of=$_dir/vmcore-incomplete" || return 1 ssh $_opt $_host "mv $_dir/vmcore-incomplete $_dir/vmcore.flat" || return 1 fi echo "kdump: saving vmcore complete" return 0 } save_vmcore_dmesg_fs() { local _dmesg_collector=$1 local _path=$2 echo "kdump: saving vmcore-dmesg.txt" $_dmesg_collector /proc/vmcore > ${_path}/vmcore-dmesg-incomplete.txt _exitcode=$? if [ $_exitcode -eq 0 ]; then mv ${_path}/vmcore-dmesg-incomplete.txt ${_path}/vmcore-dmesg.txt echo "kdump: saving vmcore-dmesg.txt complete" else echo "kdump: saving vmcore-dmesg.txt failed" fi } save_vmcore_dmesg_ssh() { local _dmesg_collector=$1 local _path=$2 local _opts="$3" local _location=$4 echo "kdump: saving vmcore-dmesg.txt" $_dmesg_collector /proc/vmcore | ssh $_opts $_location "dd of=$_path/vmcore-dmesg-incomplete.txt" _exitcode=$? if [ $_exitcode -eq 0 ]; then ssh -q $_opts $_location mv $_path/vmcore-dmesg-incomplete.txt $_path/vmcore-dmesg.txt echo "kdump: saving vmcore-dmesg.txt complete" else echo "kdump: saving vmcore-dmesg.txt failed" fi } get_host_ip() { local _host if is_nfs_dump_target || is_ssh_dump_target then kdumpnic=$(getarg kdumpnic=) [ -z "$kdumpnic" ] && echo "kdump: failed to get kdumpnic!" && return 1 _host=`ip addr show dev $kdumpnic|grep 'inet '` [ $? -ne 0 ] && echo "kdump: wrong kdumpnic: $kdumpnic" && return 1 _host="${_host##*inet }" _host="${_host%%/*}" [ -z "$_host" ] && echo "kdump: wrong kdumpnic: $kdumpnic" && return 1 HOST_IP=$_host fi return 0 } read_kdump_conf() { if [ ! -f "$conf_file" ]; then echo "kdump: $conf_file not found" return fi # first get the necessary variables while read config_opt config_val; do # remove inline comments after the end of a directive. config_val=$(strip_comments $config_val) case "$config_opt" in path) KDUMP_PATH="$config_val" ;; core_collector) [ -n "$config_val" ] && CORE_COLLECTOR="$config_val" ;; sshkey) if [ -f "$config_val" ]; then SSH_KEY_LOCATION=$config_val fi ;; kdump_pre) KDUMP_PRE="$config_val" ;; kdump_post) KDUMP_POST="$config_val" ;; fence_kdump_args) FENCE_KDUMP_ARGS="$config_val" ;; fence_kdump_nodes) FENCE_KDUMP_NODES="$config_val" ;; default) case $config_val in shell) DEFAULT_ACTION="_emergency_shell kdump" ;; reboot) DEFAULT_ACTION="do_umount; reboot -f" ;; halt) DEFAULT_ACTION="do_umount; halt -f" ;; poweroff) DEFAULT_ACTION="do_umount; poweroff -f" ;; dump_to_rootfs) DEFAULT_ACTION="dump_fs $NEWROOT" ;; esac ;; esac done < $conf_file # rescan for add code for dump target while read config_opt config_val; do # remove inline comments after the end of a directive. config_val=$(strip_comments $config_val) case "$config_opt" in ext[234]|xfs|btrfs|minix|nfs) add_dump_code "dump_fs $config_val" ;; raw) add_dump_code "dump_raw $config_val" ;; ssh) add_dump_code "dump_ssh $SSH_KEY_LOCATION $config_val" ;; esac done < $conf_file } fence_kdump_notify() { if [ -n "$FENCE_KDUMP_NODES" ]; then $FENCE_KDUMP_SEND $FENCE_KDUMP_ARGS $FENCE_KDUMP_NODES & fi } read_kdump_conf fence_kdump_notify if [ -z "$CORE_COLLECTOR" ];then CORE_COLLECTOR=$DEFAULT_CORE_COLLECTOR if is_ssh_dump_target || is_raw_dump_target; then CORE_COLLECTOR="$CORE_COLLECTOR -F" fi fi get_host_ip if [ $? -ne 0 ]; then echo "kdump: get_host_ip exited with non-zero status!" do_default_action do_final_action fi if [ -z "$DUMP_INSTRUCTION" ]; then add_dump_code "dump_fs $NEWROOT" fi do_kdump_pre if [ $? -ne 0 ]; then echo "kdump: kdump_pre script exited with non-zero status!" do_final_action fi make_trace_mem "kdump saving vmcore" '1:shortmem' '2+:mem' '3+:slab' do_dump DUMP_RETVAL=$? do_kdump_post $DUMP_RETVAL if [ $? -ne 0 ]; then echo "kdump: kdump_post script exited with non-zero status!" fi if [ $DUMP_RETVAL -ne 0 ]; then do_default_action fi do_final_action