329 lines
7.8 KiB
Bash
Executable File
329 lines
7.8 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
exec &> /dev/console
|
|
. /lib/dracut-lib.sh
|
|
. /lib/kdump-lib.sh
|
|
|
|
if [ -f "$initdir/lib/dracut/no-emergency-shell" ]; then
|
|
rm -f -- $initdir/lib/dracut/no-emergency-shell
|
|
fi
|
|
|
|
set -o pipefail
|
|
KDUMP_PATH="/var/crash"
|
|
CORE_COLLECTOR=""
|
|
DEFAULT_CORE_COLLECTOR="makedumpfile -c --message-level 1 -d 31"
|
|
DMESG_COLLECTOR="/sbin/vmcore-dmesg"
|
|
DEFAULT_ACTION="reboot -f"
|
|
DATEDIR=`date +%Y.%m.%d-%T`
|
|
HOST_IP='127.0.0.1'
|
|
DUMP_INSTRUCTION=""
|
|
SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
|
|
KDUMP_SCRIPT_DIR="/kdumpscripts"
|
|
DD_BLKSIZE=512
|
|
FINAL_ACTION="reboot -f"
|
|
DUMP_RETVAL=0
|
|
conf_file="/etc/kdump.conf"
|
|
KDUMP_PRE=""
|
|
KDUMP_POST=""
|
|
MOUNTS=""
|
|
|
|
export PATH=$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=$1
|
|
}
|
|
|
|
# dump_fs <mount point| device>
|
|
dump_fs()
|
|
{
|
|
local _dev=$(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"
|
|
;;
|
|
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 < $conf_file
|
|
}
|
|
|
|
read_kdump_conf
|
|
|
|
if [ -z "$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 [ $? -ne 0 ]; then
|
|
echo "kdump: kdump_pre script exited with non-zero status!"
|
|
do_final_action
|
|
fi
|
|
|
|
do_dump
|
|
DUMP_RETVAL=$?
|
|
|
|
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
|