2011-07-06 19:25:34 +00:00
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|
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#! /bin/sh
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KEXEC=/sbin/kexec
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KDUMP_KERNELVER=""
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KDUMP_COMMANDLINE=""
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KEXEC_ARGS=""
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KDUMP_CONFIG_FILE="/etc/kdump.conf"
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2012-06-06 08:24:23 +00:00
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MKDUMPRD="/sbin/mkdumprd -f"
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2012-02-22 03:16:09 +00:00
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SAVE_PATH=/var/crash
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SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
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DUMP_TARGET=""
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2011-07-06 19:25:34 +00:00
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2013-09-26 11:46:48 +00:00
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. /lib/kdump/kdump-lib.sh
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2011-07-06 19:25:34 +00:00
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standard_kexec_args="-p"
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if [ -f /etc/sysconfig/kdump ]; then
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. /etc/sysconfig/kdump
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fi
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2013-08-30 09:21:56 +00:00
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single_instance_lock()
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{
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exec 9>/var/lock/kdump
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flock 9
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}
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2013-08-02 06:22:21 +00:00
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# remove_cmdline_param <kernel cmdline> <param1> [<param2>] ... [<paramN>]
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# Remove a list of kernel parameters from a given kernel cmdline and print the result.
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# For each "arg" in the removing params list, "arg" and "arg=xxx" will be removed if exists.
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function remove_cmdline_param()
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{
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local cmdline=$1
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shift
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for arg in $@; do
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cmdline=`echo $cmdline | \
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sed -e "s/\b$arg=[^ ]*\b//g" \
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-e "s/\b$arg\b//g" \
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-e "s/\s\+/ /g"`
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done
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echo $cmdline
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}
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2011-07-06 19:25:34 +00:00
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function save_core()
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{
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coredir="/var/crash/`date +"%Y-%m-%d-%H:%M"`"
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mkdir -p $coredir
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cp --sparse=always /proc/vmcore $coredir/vmcore-incomplete
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if [ $? == 0 ]; then
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mv $coredir/vmcore-incomplete $coredir/vmcore
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2013-02-18 09:05:41 +00:00
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|
echo "saved a vmcore to $coredir"
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2011-07-06 19:25:34 +00:00
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else
|
2013-02-18 09:05:41 +00:00
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echo "failed to save a vmcore to $coredir" >&2
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2011-07-06 19:25:34 +00:00
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fi
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# pass the dmesg to Abrt tool if exists, in order
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# to collect the kernel oops message.
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# https://fedorahosted.org/abrt/
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if [ -x /usr/bin/dumpoops ]; then
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makedumpfile --dump-dmesg $coredir/vmcore $coredir/dmesg >/dev/null 2>&1
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dumpoops -d $coredir/dmesg >/dev/null 2>&1
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|
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if [ $? == 0 ]; then
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2013-02-18 09:05:41 +00:00
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|
|
echo "kernel oops has been collected by abrt tool"
|
2011-07-06 19:25:34 +00:00
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|
|
fi
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fi
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|
|
}
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|
2012-06-14 01:57:27 +00:00
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function rebuild_initrd()
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{
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$MKDUMPRD $kdump_initrd $kdump_kver
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if [ $? != 0 ]; then
|
2013-02-18 09:05:41 +00:00
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|
|
echo "mkdumprd: failed to make kdump initrd" >&2
|
2012-06-14 01:57:27 +00:00
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|
|
return 1
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|
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fi
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}
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#$1: the files to be checked with IFS=' '
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function check_exist()
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{
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for file in $1; do
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if [ ! -f "$file" ]; then
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echo -n "Error: $file not found."; echo
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return 1
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|
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fi
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|
|
done
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}
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#$1: the files to be checked with IFS=' '
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|
|
function check_executable()
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|
|
{
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for file in $1; do
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|
|
if [ ! -x "$file" ]; then
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|
|
echo -n "Error: $file is not executable."; echo
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|
|
return 1
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|
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fi
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|
|
done
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|
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}
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|
|
2013-03-11 09:31:25 +00:00
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|
|
function check_config()
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|
|
{
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local nr
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nr=$(awk 'BEGIN{cnt=0} /^raw|^ssh[[:blank:]]|^nfs|^ext[234]|^xfs|^btrfs|^minix/{cnt++} END{print cnt}' $KDUMP_CONFIG_FILE)
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[ $nr -gt 1 ] && {
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|
echo "More than one dump targets specified."
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return 1
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|
|
}
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|
|
while read config_opt config_val; do
|
2013-09-26 11:46:48 +00:00
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|
|
# remove inline comments after the end of a directive.
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|
|
config_val=$(strip_comments $config_val)
|
2013-03-11 09:31:25 +00:00
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|
|
case "$config_opt" in
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|
|
\#* | "")
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|
|
;;
|
add dracut_args option to kdump.conf
mkdumprd call dracut to rebuilding kdump initrd, sometimes passing extra
dracut args is helpful. For example user can enable debug output with
--debug, --printsize to print roughly increased initramfs size by each module,
--omit-drivers to omit kernel modules, etc.
This patch enables dracut_args option for passing extra args to dracut.
Also it modifies add_dracut_arg() to treat a string with-in quote as single
string because for dracut options which has its own args, the args need to be
quoted and space seperated.
If add_dracut_arg() gets an string read from kdump.conf and if that string
contains double quotes, then while converting to positional parameters
those double quotes are not interpreted. Hence if /etc/kdump.conf contains
following.
dracut_args --add-drivers "driver1 driver2"
then add_dracut_args() sees following positional parameters
$1= --add-drivers
$2= "driver1
$3= driver2"
Notice, double quotes have been ignored and parameters have been broken
based on white space.
Modify add_dracut_arg() to look for parameters starting with " and
if one is found, it tries to merge all the next parameters till one
is found with ending double quote. Hence effectively simulating
following behavior.
$1= --add-drivers
$2= "driver1 driver2"
[v1->v2]: address quoted substring in dracut_args, also handle the leading
and ending spaces in substring.
[v2->v3]: fix dracut arguments seperator in kdump.conf.
[v3->v4]: improve changelog, thanks vivek.
[v4->v5]: make the manpage more verbose [vivek].
Tested with below dracut_args test cases:
1. dracut_args --add-drivers "pcspkr virtio_net" --omit-drivers "sdhci-pci hid-logitech-dj e1000"
2. dracut_args --add-drivers " pcspkr virtio_net " --omit-drivers "sdhci-pci hid-logitech-dj e1000"
Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
2013-04-15 02:12:05 +00:00
|
|
|
raw|ext2|ext3|ext4|minix|btrfs|xfs|nfs|ssh|sshkey|path|core_collector|kdump_post|kdump_pre|extra_bins|extra_modules|default|force_rebuild|dracut_args)
|
2013-03-11 09:31:25 +00:00
|
|
|
[ -z "$config_val" ] && {
|
|
|
|
echo "Invalid kdump config value for option $config_opt."
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
;;
|
2013-03-22 03:55:24 +00:00
|
|
|
net|options|link_delay|disk_timeout|debug_mem_level|blacklist)
|
2013-03-11 09:31:25 +00:00
|
|
|
echo "Deprecated kdump config option: $config_opt. Refer to kdump.conf manpage for alternatives."
|
|
|
|
return 1
|
|
|
|
;;
|
|
|
|
*)
|
|
|
|
echo "Invalid kdump config option $config_opt"
|
|
|
|
return 1;
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
done < $KDUMP_CONFIG_FILE
|
|
|
|
return 0
|
|
|
|
}
|
|
|
|
|
2013-12-17 07:00:33 +00:00
|
|
|
# check_fence_kdump <image timestamp>
|
|
|
|
# return 0 if fence_kdump is configured and kdump initrd needs to be rebuilt
|
|
|
|
function check_fence_kdump()
|
|
|
|
{
|
|
|
|
local image_time=$1
|
|
|
|
local cib_time
|
|
|
|
|
|
|
|
is_fence_kdump || return 1
|
|
|
|
|
|
|
|
cib_time=`pcs cluster cib | xmllint --xpath 'string(/cib/@cib-last-written)' - | \
|
|
|
|
xargs -0 date +%s --date`
|
|
|
|
|
|
|
|
if [ -z $cib_time -o $cib_time -le $image_time ]; then
|
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
|
|
|
|
return 0
|
|
|
|
}
|
|
|
|
|
2013-03-05 08:07:37 +00:00
|
|
|
function check_rebuild()
|
2011-07-06 19:25:34 +00:00
|
|
|
{
|
2012-06-14 01:57:27 +00:00
|
|
|
local extra_modules modified_files=""
|
2012-08-06 14:01:29 +00:00
|
|
|
local _force_rebuild force_rebuild="0"
|
2012-06-14 01:57:27 +00:00
|
|
|
|
2011-07-06 19:25:34 +00:00
|
|
|
if [ -z "$KDUMP_KERNELVER" ]; then
|
2011-07-25 10:04:32 +00:00
|
|
|
kdump_kver=`uname -r`
|
2011-07-06 19:25:34 +00:00
|
|
|
else
|
|
|
|
kdump_kver=$KDUMP_KERNELVER
|
|
|
|
fi
|
|
|
|
|
|
|
|
kdump_kernel="${KDUMP_BOOTDIR}/${KDUMP_IMG}-${kdump_kver}${KDUMP_IMG_EXT}"
|
2011-07-27 10:05:04 +00:00
|
|
|
kdump_initrd="${KDUMP_BOOTDIR}/initramfs-${kdump_kver}kdump.img"
|
2011-07-06 19:25:34 +00:00
|
|
|
|
2012-08-06 14:01:29 +00:00
|
|
|
_force_rebuild=`grep ^force_rebuild $KDUMP_CONFIG_FILE 2>/dev/null`
|
|
|
|
if [ $? -eq 0 ]; then
|
|
|
|
force_rebuild=`echo $_force_rebuild | cut -d' ' -f2`
|
|
|
|
if [ "$force_rebuild" != "0" ] && [ "$force_rebuild" != "1" ];then
|
|
|
|
echo "Error: force_rebuild value is invalid"
|
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
2012-06-14 01:57:27 +00:00
|
|
|
#will rebuild every time if extra_modules are specified
|
|
|
|
extra_modules=`grep ^extra_modules $KDUMP_CONFIG_FILE`
|
2012-08-06 14:01:29 +00:00
|
|
|
[ -n "$extra_modules" ] && force_rebuild="1"
|
2011-07-06 19:25:34 +00:00
|
|
|
|
2012-06-14 01:57:27 +00:00
|
|
|
#check to see if dependent files has been modified
|
|
|
|
#since last build of the image file
|
|
|
|
if [ -f $kdump_initrd ]; then
|
|
|
|
image_time=`stat -c "%Y" $kdump_initrd 2>/dev/null`
|
|
|
|
else
|
|
|
|
image_time=0
|
2011-07-06 19:25:34 +00:00
|
|
|
fi
|
|
|
|
|
2013-12-17 07:00:33 +00:00
|
|
|
#also rebuild when cluster conf is changed and fence kdump is enabled.
|
|
|
|
check_fence_kdump $image_time && modified_files="cluster-cib"
|
|
|
|
|
2012-06-14 01:57:30 +00:00
|
|
|
EXTRA_BINS=`grep ^kdump_post $KDUMP_CONFIG_FILE | cut -d\ -f2`
|
|
|
|
CHECK_FILES=`grep ^kdump_pre $KDUMP_CONFIG_FILE | cut -d\ -f2`
|
|
|
|
EXTRA_BINS="$EXTRA_BINS $CHECK_FILES"
|
|
|
|
CHECK_FILES=`grep ^extra_bins $KDUMP_CONFIG_FILE | cut -d\ -f2-`
|
|
|
|
EXTRA_BINS="$EXTRA_BINS $CHECK_FILES"
|
2012-06-14 01:57:27 +00:00
|
|
|
files="$KDUMP_CONFIG_FILE $kdump_kernel $EXTRA_BINS"
|
|
|
|
|
2013-12-17 07:00:33 +00:00
|
|
|
if [ -f $FENCE_KDUMP_CONFIG ]; then
|
|
|
|
files="$files $FENCE_KDUMP_CONFIG"
|
|
|
|
fi
|
|
|
|
|
2012-06-14 01:57:27 +00:00
|
|
|
check_exist "$files" && check_executable "$EXTRA_BINS"
|
|
|
|
[ $? -ne 0 ] && return 1
|
|
|
|
|
|
|
|
for file in $files; do
|
|
|
|
time_stamp=`stat -c "%Y" $file`
|
|
|
|
if [ "$time_stamp" -gt "$image_time" ]; then
|
|
|
|
modified_files="$modified_files $file"
|
2011-07-06 19:25:34 +00:00
|
|
|
fi
|
2012-06-14 01:57:27 +00:00
|
|
|
done
|
|
|
|
|
|
|
|
if [ $image_time -eq 0 ]; then
|
|
|
|
echo -n "No kdump initial ramdisk found."; echo
|
2012-08-06 14:01:29 +00:00
|
|
|
elif [ "$force_rebuild" != "0" ]; then
|
2012-06-14 01:57:27 +00:00
|
|
|
echo -n "Force rebuild $kdump_initrd"; echo
|
|
|
|
elif [ -n "$modified_files" ]; then
|
|
|
|
echo "Detected change(s) the following file(s):"
|
|
|
|
echo -n " "; echo "$modified_files" | sed 's/\s/\n /g'
|
|
|
|
else
|
|
|
|
return 0
|
2011-07-06 19:25:34 +00:00
|
|
|
fi
|
|
|
|
|
2012-06-14 01:57:27 +00:00
|
|
|
echo "Rebuilding $kdump_initrd"
|
|
|
|
rebuild_initrd
|
|
|
|
return $?
|
2011-07-06 19:25:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
# This function check iomem and determines if we have more than
|
|
|
|
# 4GB of ram available. Returns 1 if we do, 0 if we dont
|
|
|
|
function need_64bit_headers()
|
|
|
|
{
|
|
|
|
return `tail -n 1 /proc/iomem | awk '{ split ($1, r, "-"); \
|
|
|
|
print (strtonum("0x" r[2]) > strtonum("0xffffffff")); }'`
|
|
|
|
}
|
|
|
|
|
|
|
|
# Load the kdump kerel specified in /etc/sysconfig/kdump
|
|
|
|
# If none is specified, try to load a kdump kernel with the same version
|
|
|
|
# as the currently running kernel.
|
|
|
|
function load_kdump()
|
|
|
|
{
|
2012-11-12 08:51:03 +00:00
|
|
|
MEM_RESERVED=$(cat /sys/kernel/kexec_crash_size)
|
|
|
|
if [ $MEM_RESERVED -eq 0 ]
|
2011-07-06 19:25:34 +00:00
|
|
|
then
|
2013-02-18 09:05:41 +00:00
|
|
|
echo "No memory reserved for crash kernel." >&2
|
2011-07-06 19:25:34 +00:00
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
|
2012-11-12 08:51:03 +00:00
|
|
|
ARCH=`uname -m`
|
2011-07-06 19:25:34 +00:00
|
|
|
if [ "$ARCH" == "i686" -o "$ARCH" == "i386" ]
|
|
|
|
then
|
|
|
|
|
|
|
|
need_64bit_headers
|
|
|
|
if [ $? == 1 ]
|
|
|
|
then
|
|
|
|
FOUND_ELF_ARGS=`echo $KEXEC_ARGS | grep elf32-core-headers`
|
|
|
|
if [ -n "$FOUND_ELF_ARGS" ]
|
|
|
|
then
|
|
|
|
echo -n "Warning: elf32-core-headers overrides correct elf64 setting"
|
|
|
|
echo
|
|
|
|
else
|
|
|
|
KEXEC_ARGS="$KEXEC_ARGS --elf64-core-headers"
|
|
|
|
fi
|
|
|
|
else
|
|
|
|
FOUND_ELF_ARGS=`echo $KEXEC_ARGS | grep elf64-core-headers`
|
|
|
|
if [ -z "$FOUND_ELF_ARGS" ]
|
|
|
|
then
|
|
|
|
KEXEC_ARGS="$KEXEC_ARGS --elf32-core-headers"
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
2012-11-12 08:51:03 +00:00
|
|
|
if [ -z "$KDUMP_COMMANDLINE" ]
|
|
|
|
then
|
|
|
|
KDUMP_COMMANDLINE=`cat /proc/cmdline`
|
|
|
|
fi
|
2013-08-02 06:22:21 +00:00
|
|
|
KDUMP_COMMANDLINE=`remove_cmdline_param "$KDUMP_COMMANDLINE" crashkernel hugepages hugepagesz`
|
2012-11-12 08:51:03 +00:00
|
|
|
|
2011-07-06 19:25:34 +00:00
|
|
|
KDUMP_COMMANDLINE="${KDUMP_COMMANDLINE} ${KDUMP_COMMANDLINE_APPEND}"
|
|
|
|
|
|
|
|
$KEXEC $KEXEC_ARGS $standard_kexec_args \
|
|
|
|
--command-line="$KDUMP_COMMANDLINE" \
|
|
|
|
--initrd=$kdump_initrd $kdump_kernel 2>/dev/null
|
|
|
|
if [ $? == 0 ]; then
|
2013-02-18 09:05:41 +00:00
|
|
|
echo "kexec: loaded kdump kernel"
|
2011-07-06 19:25:34 +00:00
|
|
|
return 0
|
|
|
|
else
|
2013-02-18 09:05:41 +00:00
|
|
|
echo "kexec: failed to load kdump kernel" >&2
|
2011-07-06 19:25:34 +00:00
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2012-02-22 03:16:09 +00:00
|
|
|
function check_ssh_config()
|
|
|
|
{
|
|
|
|
while read config_opt config_val; do
|
2013-09-26 11:46:48 +00:00
|
|
|
# remove inline comments after the end of a directive.
|
|
|
|
config_val=$(strip_comments $config_val)
|
2012-02-22 03:16:09 +00:00
|
|
|
case "$config_opt" in
|
|
|
|
sshkey)
|
|
|
|
if [ -f "$config_val" ]; then
|
|
|
|
# canonicalize the path
|
|
|
|
SSH_KEY_LOCATION=$(/usr/bin/readlink -m $config_val)
|
|
|
|
else
|
|
|
|
echo "WARNING: '$config_val' doesn't exist, using default value '$SSH_KEY_LOCATION'"
|
|
|
|
fi
|
|
|
|
;;
|
|
|
|
path)
|
|
|
|
SAVE_PATH=$config_val
|
|
|
|
;;
|
2012-07-23 07:31:28 +00:00
|
|
|
ssh)
|
2012-02-22 03:16:09 +00:00
|
|
|
DUMP_TARGET=$config_val
|
|
|
|
;;
|
|
|
|
*)
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
done < $KDUMP_CONFIG_FILE
|
|
|
|
|
|
|
|
#make sure they've configured kdump.conf for ssh dumps
|
2012-03-28 08:23:38 +00:00
|
|
|
local SSH_TARGET=`echo -n $DUMP_TARGET | sed -n '/.*@/p'`
|
2012-02-22 03:16:09 +00:00
|
|
|
if [ -z "$SSH_TARGET" ]; then
|
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
return 0
|
|
|
|
}
|
|
|
|
|
|
|
|
function check_ssh_target()
|
|
|
|
{
|
2013-02-18 09:05:43 +00:00
|
|
|
local _ret
|
|
|
|
ssh -q -i $SSH_KEY_LOCATION -o BatchMode=yes $DUMP_TARGET mkdir -p $SAVE_PATH
|
|
|
|
_ret=$?
|
|
|
|
if [ $_ret -ne 0 ]; then
|
|
|
|
echo "Could not create $DUMP_TARGET:$SAVE_PATH, you probably need to run \"kdumpctl propagate\"" >&2
|
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
return 0
|
2012-02-22 03:16:09 +00:00
|
|
|
}
|
|
|
|
|
2011-07-06 19:25:34 +00:00
|
|
|
function propagate_ssh_key()
|
|
|
|
{
|
2012-02-22 03:16:09 +00:00
|
|
|
check_ssh_config
|
|
|
|
if [ $? -ne 0 ]; then
|
2013-02-18 09:05:41 +00:00
|
|
|
echo "No ssh config specified in $KDUMP_CONFIG_FILE. Can't propagate" >&2
|
2012-02-22 03:16:09 +00:00
|
|
|
exit 1
|
|
|
|
fi
|
|
|
|
|
2011-07-06 19:25:34 +00:00
|
|
|
#Check if selinux is on... must flip to permissive mode
|
|
|
|
#for the moment to create key, then flip back...
|
|
|
|
se_enforce=`/usr/sbin/sestatus | grep -c "^Current mode.*enforcing"`
|
|
|
|
if [ "$se_enforce" -ge 1 ]; then
|
|
|
|
/usr/sbin/setenforce 0 2>&1 > /dev/null
|
|
|
|
fi
|
|
|
|
|
2012-02-22 03:16:09 +00:00
|
|
|
local KEYFILE=$SSH_KEY_LOCATION
|
2011-07-06 19:25:34 +00:00
|
|
|
local errmsg="Failed to propagate ssh key"
|
|
|
|
|
|
|
|
#Check to see if we already created key, if not, create it.
|
|
|
|
if [ -f $KEYFILE ]; then
|
|
|
|
echo "Using existing keys..."
|
|
|
|
else
|
|
|
|
echo -n "Generating new ssh keys... "
|
2012-02-22 03:16:09 +00:00
|
|
|
/usr/bin/ssh-keygen -t rsa -f $KEYFILE -N "" 2>&1 > /dev/null
|
2011-07-06 19:25:34 +00:00
|
|
|
echo "done."
|
|
|
|
fi
|
|
|
|
|
|
|
|
#If necessary, flip selinux back to enforcing
|
|
|
|
if [ "$se_enforce" -ge 1 ]; then
|
|
|
|
/usr/sbin/setenforce 1 2>&1 > /dev/null
|
|
|
|
fi
|
|
|
|
|
|
|
|
#now find the target ssh user and server to contact.
|
2012-02-22 03:16:09 +00:00
|
|
|
SSH_USER=`echo $DUMP_TARGET | cut -d\ -f2 | cut -d@ -f1`
|
|
|
|
SSH_SERVER=`echo $DUMP_TARGET | sed -e's/\(.*@\)\(.*$\)/\2/'`
|
2011-07-06 19:25:34 +00:00
|
|
|
|
|
|
|
#now send the found key to the found server
|
2012-02-22 03:16:09 +00:00
|
|
|
ssh-copy-id -i $KEYFILE $SSH_USER@$SSH_SERVER
|
2011-07-06 19:25:34 +00:00
|
|
|
RET=$?
|
|
|
|
if [ $RET == 0 ]; then
|
|
|
|
echo $KEYFILE has been added to ~$SSH_USER/.ssh/authorized_keys on $SSH_SERVER
|
|
|
|
return 0
|
|
|
|
else
|
2013-02-18 09:05:41 +00:00
|
|
|
echo $errmsg, $KEYFILE failed in transfer to $SSH_SERVER >&2
|
2011-07-06 19:25:34 +00:00
|
|
|
exit 1
|
|
|
|
fi
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
function status()
|
|
|
|
{
|
|
|
|
if [ ! -e /sys/kernel/kexec_crash_loaded ]
|
|
|
|
then
|
|
|
|
return 2
|
|
|
|
fi
|
|
|
|
rc=`cat /sys/kernel/kexec_crash_loaded`
|
|
|
|
if [ $rc == 1 ]; then
|
|
|
|
return 0
|
|
|
|
else
|
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2012-04-28 10:01:18 +00:00
|
|
|
function save_raw()
|
|
|
|
{
|
|
|
|
local kdump_dir
|
|
|
|
local raw_target
|
|
|
|
|
|
|
|
raw_target=$(awk '$1 ~ /^raw$/ { print $2; }' $KDUMP_CONFIG_FILE)
|
|
|
|
[ -z "$raw_target" ] && return 0
|
|
|
|
[ -b "$raw_target" ] || {
|
|
|
|
echo "raw partition $raw_target not found"
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
kdump_dir=`grep ^path $KDUMP_CONFIG_FILE | cut -d' ' -f2-`
|
|
|
|
if [ -z "${kdump_dir}" ]; then
|
|
|
|
coredir="/var/crash/`date +"%Y-%m-%d-%H:%M"`"
|
|
|
|
else
|
|
|
|
coredir="${kdump_dir}/`date +"%Y-%m-%d-%H:%M"`"
|
|
|
|
fi
|
|
|
|
|
|
|
|
mkdir -p "$coredir"
|
|
|
|
[ -d "$coredir" ] || {
|
|
|
|
echo "failed to create $coredir"
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
if makedumpfile -R $coredir/vmcore <$raw_target >/dev/null 2>&1; then
|
|
|
|
# dump found
|
|
|
|
echo "Dump saved to $coredir/vmcore"
|
|
|
|
# wipe makedumpfile header
|
|
|
|
dd if=/dev/zero of=$raw_target bs=1b count=1 2>/dev/null
|
|
|
|
else
|
|
|
|
rm -rf "$coredir"
|
|
|
|
fi
|
|
|
|
|
|
|
|
return 0
|
|
|
|
}
|
|
|
|
|
2013-06-08 06:22:31 +00:00
|
|
|
get_save_path() {
|
|
|
|
local _save_path=$(grep "^path" /etc/kdump.conf|awk '{print $2}')
|
|
|
|
if [ -z "$_save_path" ]; then
|
|
|
|
_save_path="/var/crash"
|
|
|
|
fi
|
|
|
|
|
|
|
|
echo $_save_path
|
|
|
|
}
|
|
|
|
|
|
|
|
is_dump_target_configured() {
|
|
|
|
local _target
|
|
|
|
|
|
|
|
_target=$(egrep "^ext[234]|^xfs|^btrfs|^minix|^raw|^ssh|^nfs" /etc/kdump.conf)
|
|
|
|
|
|
|
|
[ -n "$_target" ]
|
|
|
|
}
|
|
|
|
|
|
|
|
local_fs_dump_target()
|
|
|
|
{
|
|
|
|
local _target
|
|
|
|
|
|
|
|
_target=$(egrep "^ext[234]|^xfs|^btrfs|^minix" /etc/kdump.conf)
|
|
|
|
if [ $? -eq 0 ]; then
|
|
|
|
echo $_target|awk '{print $2}'
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
|
|
|
path_to_be_relabeled() {
|
|
|
|
local _path _target _mnt="/" _rmnt
|
|
|
|
|
|
|
|
if is_dump_target_configured; then
|
|
|
|
_target=$(local_fs_dump_target)
|
|
|
|
if [[ -n "$_target" ]]; then
|
|
|
|
_mnt=$(findmnt -k -f -n -r -o TARGET $_target)
|
|
|
|
if [ -z "$_mnt" ]; then
|
|
|
|
return
|
|
|
|
fi
|
|
|
|
else
|
|
|
|
return
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
|
|
|
_path=$(get_save_path)
|
|
|
|
# if $_path is masked by other mount, we will not relabel it.
|
|
|
|
_rmnt=$(df $_mnt/$_path 2>/dev/null | tail -1 | awk '{ print $NF }')
|
|
|
|
if [ "$_rmnt" == "$_mnt" ]; then
|
|
|
|
echo $_mnt/$_path
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
|
|
|
selinux_relabel()
|
|
|
|
{
|
|
|
|
local _path _i _attr
|
|
|
|
|
|
|
|
_path=$(path_to_be_relabeled)
|
|
|
|
if [ -z "$_path" ] || ! [ -d "$_path" ] ; then
|
|
|
|
return
|
|
|
|
fi
|
|
|
|
|
|
|
|
for _i in $(find $_path); do
|
|
|
|
_attr=$(getfattr -m "security.selinux" $_i 2>/dev/null)
|
|
|
|
if [ -z "$_attr" ]; then
|
|
|
|
restorecon $_i;
|
|
|
|
fi
|
|
|
|
done
|
|
|
|
}
|
|
|
|
|
2014-02-12 02:31:41 +00:00
|
|
|
# Check if secure boot is being enforced.
|
|
|
|
#
|
|
|
|
# Per Peter Jones, we need check efivar SecureBoot-$(the UUID) and
|
|
|
|
# SetupMode-$(the UUID), they are both 5 bytes binary data. The first four
|
|
|
|
# bytes are the attributes associated with the variable and can safely be
|
|
|
|
# ignored, the last bytes are one-byte true-or-false variables. If SecureBoot
|
|
|
|
# is 1 and SetupMode is 0, then secure boot is being enforced.
|
|
|
|
#
|
|
|
|
# Assume efivars is mounted at /sys/firmware/efi/efivars.
|
|
|
|
function is_secure_boot_enforced()
|
|
|
|
{
|
|
|
|
local secure_boot_file setup_mode_file
|
|
|
|
local secure_boot_byte setup_mode_byte
|
|
|
|
|
|
|
|
secure_boot_file=$(find /sys/firmware/efi/efivars -name SecureBoot-* 2>/dev/null)
|
|
|
|
setup_mode_file=$(find /sys/firmware/efi/efivars -name SetupMode-* 2>/dev/null)
|
|
|
|
|
|
|
|
if [ -f "$secure_boot_file" ] && [ -f "$setup_mode_file" ]; then
|
|
|
|
secure_boot_byte=$(hexdump -v -e '/1 "%d\ "' $secure_boot_file|cut -d' ' -f 5)
|
|
|
|
setup_mode_byte=$(hexdump -v -e '/1 "%d\ "' $setup_mode_file|cut -d' ' -f 5)
|
|
|
|
|
|
|
|
if [ "$secure_boot_byte" = "1" ] && [ "$setup_mode_byte" = "0" ]; then
|
|
|
|
return 0
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
|
|
|
return 1
|
|
|
|
}
|
|
|
|
|
|
|
|
function check_kdump_feasibility()
|
|
|
|
{
|
|
|
|
if is_secure_boot_enforced; then
|
|
|
|
echo "Secure Boot is Enabled. Kdump service can't be started. Disable Secure Boot and retry"
|
|
|
|
return 1;
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2011-07-06 19:25:34 +00:00
|
|
|
function start()
|
|
|
|
{
|
2013-03-11 09:31:25 +00:00
|
|
|
check_config
|
|
|
|
if [ $? -ne 0 ]; then
|
|
|
|
echo "Starting kdump: [FAILED]"
|
2012-04-28 07:17:13 +00:00
|
|
|
return 1
|
2013-03-11 09:31:25 +00:00
|
|
|
fi
|
2012-04-28 07:17:13 +00:00
|
|
|
|
2013-06-08 06:22:31 +00:00
|
|
|
if sestatus 2>/dev/null | grep -q "SELinux status.*enabled"; then
|
|
|
|
selinux_relabel
|
|
|
|
fi
|
2012-04-28 10:01:18 +00:00
|
|
|
save_raw
|
|
|
|
if [ $? -ne 0 ]; then
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "Starting kdump: [FAILED]"
|
2012-04-28 10:01:18 +00:00
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
|
2014-02-12 02:31:41 +00:00
|
|
|
check_kdump_feasibility
|
|
|
|
if [ $? -ne 0 ]; then
|
|
|
|
echo "Starting kdump: [FAILED]"
|
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
|
2011-07-06 19:25:34 +00:00
|
|
|
status
|
|
|
|
rc=$?
|
|
|
|
if [ $rc == 2 ]; then
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "Kdump is not supported on this kernel: [WARNING]"
|
2011-07-06 19:25:34 +00:00
|
|
|
return 1;
|
|
|
|
else
|
|
|
|
if [ $rc == 0 ]; then
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "Kdump already running: [WARNING]"
|
2011-07-06 19:25:34 +00:00
|
|
|
return 0
|
|
|
|
fi
|
|
|
|
fi
|
2012-02-22 03:16:09 +00:00
|
|
|
|
2013-02-18 09:05:43 +00:00
|
|
|
if check_ssh_config; then
|
|
|
|
if ! check_ssh_target; then
|
|
|
|
echo "Starting kdump: [FAILED]"
|
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
fi
|
|
|
|
|
2013-03-05 08:07:37 +00:00
|
|
|
check_rebuild
|
2011-07-06 19:25:34 +00:00
|
|
|
if [ $? != 0 ]; then
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "Starting kdump: [FAILED]"
|
2011-07-06 19:25:34 +00:00
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
load_kdump
|
|
|
|
if [ $? != 0 ]; then
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "Starting kdump: [FAILED]"
|
2011-07-06 19:25:34 +00:00
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "Starting kdump: [OK]"
|
2011-07-06 19:25:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
function stop()
|
|
|
|
{
|
|
|
|
$KEXEC -p -u 2>/dev/null
|
|
|
|
if [ $? == 0 ]; then
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "kexec: unloaded kdump kernel"
|
|
|
|
echo "Stopping kdump: [OK]"
|
2011-07-06 19:25:34 +00:00
|
|
|
return 0
|
|
|
|
else
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "kexec: failed to unloaded kdump kernel"
|
|
|
|
echo "Stopping kdump: [FAILED]"
|
2011-07-06 19:25:34 +00:00
|
|
|
return 1
|
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2012-04-28 10:01:18 +00:00
|
|
|
if [ ! -f "$KDUMP_CONFIG_FILE" ]; then
|
2013-02-18 09:05:42 +00:00
|
|
|
echo "Error: No kdump config file found!" >&2
|
2012-04-28 10:01:18 +00:00
|
|
|
exit 1
|
|
|
|
fi
|
|
|
|
|
2013-11-25 16:23:11 +00:00
|
|
|
main ()
|
|
|
|
{
|
|
|
|
case "$1" in
|
|
|
|
start)
|
|
|
|
if [ -s /proc/vmcore ]; then
|
|
|
|
save_core
|
|
|
|
reboot
|
|
|
|
else
|
|
|
|
start
|
|
|
|
fi
|
|
|
|
;;
|
|
|
|
stop)
|
|
|
|
stop
|
|
|
|
;;
|
|
|
|
status)
|
2011-07-06 19:25:34 +00:00
|
|
|
EXIT_CODE=0
|
2013-11-25 16:23:11 +00:00
|
|
|
status
|
|
|
|
case "$?" in
|
|
|
|
0)
|
|
|
|
echo "Kdump is operational"
|
|
|
|
EXIT_CODE=0
|
|
|
|
;;
|
|
|
|
1)
|
|
|
|
echo "Kdump is not operational"
|
|
|
|
EXIT_CODE=3
|
|
|
|
;;
|
|
|
|
2)
|
|
|
|
echo "Kdump is unsupported on this kernel"
|
|
|
|
EXIT_CODE=3
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
exit $EXIT_CODE
|
2011-07-06 19:25:34 +00:00
|
|
|
;;
|
2013-11-25 16:23:11 +00:00
|
|
|
restart)
|
|
|
|
stop
|
|
|
|
start
|
|
|
|
;;
|
|
|
|
condrestart)
|
2011-07-06 19:25:34 +00:00
|
|
|
;;
|
2013-11-25 16:23:11 +00:00
|
|
|
propagate)
|
|
|
|
propagate_ssh_key
|
2011-07-06 19:25:34 +00:00
|
|
|
;;
|
2013-11-25 16:23:11 +00:00
|
|
|
*)
|
|
|
|
echo $"Usage: $0 {start|stop|status|restart|propagate}"
|
|
|
|
exit 1
|
2011-07-06 19:25:34 +00:00
|
|
|
esac
|
2013-11-25 16:23:11 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
# Other kdumpctl instances will block in queue, until this one exits
|
|
|
|
single_instance_lock
|
|
|
|
|
|
|
|
# To avoid fd 9 leaking, we invoke a subshell, close fd 9 and call main.
|
|
|
|
# So that fd isn't leaking when main is invoking a subshell.
|
|
|
|
(exec 9<&-; main $1)
|
2011-07-06 19:25:34 +00:00
|
|
|
|
|
|
|
exit $?
|