kexec-tools/mkdumprd
2012-01-25 12:18:51 +08:00

141 lines
2.7 KiB
Bash

#!/bin/bash --norc
# New mkdumprd
#
# Copyright 2011 Red Hat, Inc.
#
# Written by Cong Wang <amwang@redhat.com>
#
export IN_KDUMP=1
conf_file="/etc/kdump.conf"
extra_modules=""
dracut_args=("-m" "kdumpbase" "--add" "dash" "--add" "fstab-sys" "-c" "/dev/null" "-I" "/sbin/makedumpfile")
add_dracut_arg() {
while [ $# -gt 0 ];
do
dracut_args+=("$1")
shift
done
}
add_dracut_module() {
add_dracut_arg "--add" "$1"
}
add_dracut_mount() {
add_dracut_arg "--mount" "$1"
}
while [ $# -gt 0 ]; do
case $1 in
-d)
shift
;;
--noconf)
conf_file=""
shift
;;
--debug)
add_dracut_arg "-v"
set -x
shift
;;
*)
break
;;
esac
done
# Generic substring function. If $2 is in $1, return 0.
strstr() { [[ $1 =~ $2 ]]; }
to_dev_name() {
local dev="$1"
case "$dev" in
UUID=*)
dev=`blkid -U "${dev#UUID=}"`
;;
LABEL=*)
dev=`blkid -L "${dev#LABEL=}"`
;;
esac
echo $dev
}
get_rootdev() {
mount | grep 'on / ' | grep -v rootfs | awk '{print $1}'
}
to_mount() {
local _dev=$(to_dev_name $1)
echo "$(grep "$_dev" /proc/mounts | cut -d' ' -f1-4)"
}
# $1 remote target
check_remote() {
return
}
add_dracut_mount "$(to_mount "$(get_rootdev)")"
if [ -n "$conf_file" ]; then
while read config_opt config_val;
do
case "$config_opt" in
extra_modules)
extra_modules="$extra_modules $config_val"
;;
ext[234]|xfs|btrfs|minix)
_dev=$(to_dev_name "$config_val")
_mnt=$(to_mount "$config_val")
if [ "$_dev" = "$(get_rootdev)" ]; then
:
elif [ -n "$_mnt" ]; then
add_dracut_mount "$_mnt"
else
echo "Dump target $config_val is probably not mounted."
exit 1
fi
;;
raw)
#TODO
;;
net)
check_remote "$config_val"
if strstr "$config_val" "@";
then
add_dracut_module "ssh-client"
else
add_dracut_module "nfs"
add_dracut_mount "$(to_mount $config_val)"
fi
;;
core_collector)
add_dracut_arg "-I" "${config_val% *}"
;;
extra_bins)
add_dracut_arg "-I" "$config_val"
;;
*)
if [ -n $(echo $config_opt | grep "^#.*$") ]
then
continue
fi
;;
esac
done < $conf_file
fi
if [ -n "$extra_modules" ]
then
add_dracut_arg "--add-drivers" "$extra_modules"
fi
dracut "${dracut_args[@]}" -M "$@"
_rc=$?
sync
exit $_rc