port raw dump from rhel6 [v7]
Resolves: bz805783
kdumpctl: save_raw if found vmcore
mkdumprd: checking available size of raw disk
dracut module: do the dumping
Note, add a dir /kdumpscripts for monitor_dd_progress and future
kdump scripts
[v1->v2]: monitor_dd_process become a script instead of a function
add missed utils
use pipe with dc
[v2->v3]: Don: fix dd_progress_file typo
Vivek: move [ -f $conf_file ] earlier
don't split keyfile= and [ -f keyfile ]
move default core_collector earlier
move non-makedumpfile warnings to mkdumprd
make check available size a common function
Amerigo: use less pipe for grep then awk print
use shell (( )) instead of dc
use cut instead of awk
no need install dc and awk
make DD_BLKSIZE a variable
don't add 0755 file in git, chmod in module-setup.sh
[v3->v4]: vivek: kdumpctl multi raw target handling
monitor_dd_progress- fix wrong size calculation:
the tail -1 of dd pregress file is in bytes instead of blocks
only print the whole dd src file size for non-filtered case
check [ -b raw target device ] before dump
[v4->v5]: vivek: move check [ -b $1 ] before monitor_dd_progress
remove multi target function
[v5->v6]: vivek: only warning for raw dump of non-makedumpfile core_collector
[v6->v7]: kdumpctl should return 0 when there's no raw target
Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This commit is contained in:
Dave Young
parent
b71fc17869
commit
24eaa7da8f
@ -4,11 +4,15 @@
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set -x
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KDUMP_PATH="/var/crash"
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CORE_COLLECTOR="makedumpfile -d 31 -c"
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CORE_COLLECTOR="makedumpfile -c --message-level 1 -d 31"
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DEFAULT_ACTION="dump_rootfs"
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DATEDIR=`date +%d.%m.%y-%T`
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DUMP_INSTRUCTION=""
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SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
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KDUMP_SCRIPT_DIR="/kdumpscripts"
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DD_BLKSIZE=512
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export PATH=$PATH:$KDUMP_SCRIPT_DIR
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# we use manual setup nics in udev rules,
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# so we need to test network is really ok
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@ -72,8 +76,20 @@ dump_localfs()
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dump_raw()
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{
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[ -b "$1" ] || return 1
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echo "Saving to raw disk $1"
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if $(echo -n $CORE_COLLECTOR|grep -q makedumpfile); then
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_src_size_mb="Unknown"
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else
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_src_size=`ls -l /proc/vmcore | cut -d' ' -f5`
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_src_size_mb=$(($_src_size / 1048576))
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fi
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monitor_dd_progress $_src_size_mb &
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CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e's/\(^makedumpfile\)\(.*$\)/\1 -F \2/'`
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$CORE_COLLECTOR /proc/vmcore | dd of=$1 bs=512 || return 1
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$CORE_COLLECTOR /proc/vmcore | dd of=$1 bs=$DD_BLKSIZE >> /tmp/dd_progress_file 2>&1 || return 1
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return 0
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}
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@ -117,7 +133,7 @@ read_kdump_conf()
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KDUMP_PATH="$config_val"
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;;
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core_collector)
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CORE_COLLECTOR="$config_val"
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[ -n "$config_val" ] && CORE_COLLECTOR="$config_val"
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;;
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sshkey)
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if [ -f "$config_val" ]; then
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@ -86,6 +86,10 @@ install() {
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esac
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done < /etc/kdump.conf
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inst "$moddir/monitor_dd_progress" "/kdumpscripts/monitor_dd_progress"
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chmod +x ${initdir}/kdumpscripts/monitor_dd_progress
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inst "/bin/dd" "/bin/dd"
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inst "/bin/tail" "/bin/tail"
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inst "/bin/date" "/bin/date"
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inst "/bin/sync" "/bin/sync"
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inst "/bin/cut" "/bin/cut"
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26
kdump_dracut_modules/99kdumpbase/monitor_dd_progress
Normal file
26
kdump_dracut_modules/99kdumpbase/monitor_dd_progress
Normal file
@ -0,0 +1,26 @@
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#!/bin/sh
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SRC_FILE_MB=$1
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while true
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do
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DD_PID=`pidof dd`
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if [ -n "$DD_PID" ]; then
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break
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fi
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done
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while true
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do
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sleep 5
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if [ ! -d /proc/$DD_PID ]; then
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break
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fi
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kill -s USR1 $DD_PID
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CURRENT_SIZE=`tail -n 1 /tmp/dd_progress_file | sed "s/[^0-9].*//g"`
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CURRENT_MB=$(($CURRENT_SIZE / 1048576))
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echo -n -e "Copied $CURRENT_MB MB / $SRC_FILE_MB MB\r"
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done
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rm -f /tmp/dd_progress_file
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48
kdumpctl
48
kdumpctl
@ -281,6 +281,41 @@ function status()
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fi
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}
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function save_raw()
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{
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local kdump_dir
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local raw_target
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raw_target=$(awk '$1 ~ /^raw$/ { print $2; }' $KDUMP_CONFIG_FILE)
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[ -z "$raw_target" ] && return 0
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[ -b "$raw_target" ] || {
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echo "raw partition $raw_target not found"
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return 1
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}
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kdump_dir=`grep ^path $KDUMP_CONFIG_FILE | cut -d' ' -f2-`
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if [ -z "${kdump_dir}" ]; then
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coredir="/var/crash/`date +"%Y-%m-%d-%H:%M"`"
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else
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coredir="${kdump_dir}/`date +"%Y-%m-%d-%H:%M"`"
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fi
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mkdir -p "$coredir"
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[ -d "$coredir" ] || {
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echo "failed to create $coredir"
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return 1
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}
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if makedumpfile -R $coredir/vmcore <$raw_target >/dev/null 2>&1; then
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# dump found
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echo "Dump saved to $coredir/vmcore"
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# wipe makedumpfile header
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dd if=/dev/zero of=$raw_target bs=1b count=1 2>/dev/null
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else
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rm -rf "$coredir"
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fi
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return 0
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}
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function start()
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{
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local nr
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@ -290,7 +325,13 @@ function start()
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return 1
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}
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#TODO check raw partition for core dump image
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save_raw
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if [ $? -ne 0 ]; then
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echo -n "Starting kdump:"; echo
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$LOGGER "failed to start up"
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return 1
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fi
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status
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rc=$?
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if [ $rc == 2 ]; then
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@ -338,6 +379,11 @@ function stop()
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fi
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}
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if [ ! -f "$KDUMP_CONFIG_FILE" ]; then
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echo -n "No kdump config file found!"; echo
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exit 1
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fi
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case "$1" in
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start)
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if [ -s /proc/vmcore ]; then
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130
mkdumprd
130
mkdumprd
@ -33,6 +33,33 @@ add_dracut_sshkey() {
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add_dracut_arg "--sshkey" "$1"
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}
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#Function: get_raw_size
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#$1=dump target
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get_raw_size() {
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echo -n $(fdisk -s "$1")
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}
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#Function: check_size
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#$1: dump type string ('raw', 'local', 'ssh', 'nfs')
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#$2: dump target
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check_size() {
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local avail memtotal
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memtotal=$(awk '/MemTotal/{print $2}' /proc/meminfo)
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case "$1" in
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raw)
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avail=$(get_raw_size "$2")
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;;
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*)
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return
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esac
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if [ $avail -lt $memtotal ]; then
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echo "Warning: There is not enough space to save a vmcore."
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echo " The size of $2 should be much greater than $memtotal kilo bytes."
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fi
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}
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while [ $# -gt 0 ]; do
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case $1 in
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-d)
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@ -98,60 +125,67 @@ add_mount() {
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}
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add_dracut_mount "$(to_mount "$(get_rootdev)")"
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if [ -n "$conf_file" ]; then
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# firstly get right SSH_KEY_LOCATION
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keyfile=$(awk '/sshkey/ {print $2}' $conf_file)
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if [ -f "$keyfile" ]; then
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# canonicalize the path
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SSH_KEY_LOCATION=$(/usr/bin/readlink -m $keyfile)
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fi
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while read config_opt config_val;
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do
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case "$config_opt" in
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extra_modules)
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extra_modules="$extra_modules $config_val"
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;;
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ext[234]|xfs|btrfs|minix)
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# firstly get right SSH_KEY_LOCATION
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keyfile=$(awk '/sshkey/ {print $2}' $conf_file)
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if [ -f "$keyfile" ]; then
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# canonicalize the path
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SSH_KEY_LOCATION=$(/usr/bin/readlink -m $keyfile)
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fi
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while read config_opt config_val;
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do
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case "$config_opt" in
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extra_modules)
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extra_modules="$extra_modules $config_val"
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;;
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ext[234]|xfs|btrfs|minix)
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add_mount "$config_val"
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if [ $? -ne 0 ]; then
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echo "Dump target $config_val is probably not mounted."
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exit 1
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fi
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;;
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raw)
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#checking raw disk writable
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dd if=$config_val count=1 of=/dev/null > /dev/null 2>&1 || {
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echo "Bad raw disk $config_val"
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exit 1
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}
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check_size raw $config_val
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;;
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net)
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check_remote "$config_val"
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if strstr "$config_val" "@";
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then
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add_dracut_module "ssh-client"
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add_dracut_sshkey "$SSH_KEY_LOCATION"
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else
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add_dracut_module "nfs"
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add_mount "$config_val"
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if [ $? -ne 0 ]; then
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echo "Dump target $config_val is probably not mounted."
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exit 1
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fi
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;;
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raw)
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#TODO
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;;
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net)
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check_remote "$config_val"
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if strstr "$config_val" "@";
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then
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add_dracut_module "ssh-client"
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add_dracut_sshkey "$SSH_KEY_LOCATION"
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else
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add_dracut_module "nfs"
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add_mount "$config_val"
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if [ $? -ne 0 ]; then
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echo "Dump target $config_val is probably not mounted."
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exit 1
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fi
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fi
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;;
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core_collector)
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add_dracut_arg "-I" "${config_val%% *}"
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;;
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extra_bins)
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add_dracut_arg "-I" "$config_val"
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;;
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*)
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if [ -n $(echo $config_opt | grep "^#.*$") ]
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then
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continue
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fi
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;;
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esac
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done < $conf_file
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fi
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fi
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;;
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core_collector)
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if grep -q "^raw" $conf_file && [ "${config_val%% *}" != "makedumpfile" ]; then
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echo "Warning: specifying a non-makedumpfile core collector, you will have to recover the vmcore manually."
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fi
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add_dracut_arg "-I" "${config_val%% *}"
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;;
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extra_bins)
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add_dracut_arg "-I" "$config_val"
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;;
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*)
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if [ -n $(echo $config_opt | grep "^#.*$") ]
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then
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continue
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fi
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;;
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esac
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done < $conf_file
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if [ -n "$extra_modules" ]
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then
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