.gitignore

@@ -1,3 +1,3 @@
-SOURCES/1.7.2.tar.gz
+SOURCES/eppic-e8844d3.tar.gz
-SOURCES/eppic_050615.tar.gz
+SOURCES/kexec-tools-2.0.27.tar.xz
-SOURCES/kexec-tools-2.0.26.tar.xz
+SOURCES/makedumpfile-1.7.4.tar.gz

.kexec-tools.metadata

@@ -1,3 +1,3 @@
-24bce02cd42cdbb960ada4d9e733355582e35784 SOURCES/1.7.2.tar.gz
+80ac3f5e77d3c79883edadf14428734db4720009 SOURCES/eppic-e8844d3.tar.gz
-a096c8e0892b559f40b01916aae240652f75b68a SOURCES/eppic_050615.tar.gz
+ed15f191adee22ab0721ba62af1cae67eb981670 SOURCES/kexec-tools-2.0.27.tar.xz
-27cea5d032ec1e93506b8110222420abf754df2d SOURCES/kexec-tools-2.0.26.tar.xz
+98cae2b1062871905795918c32b6d46ccd115074 SOURCES/makedumpfile-1.7.4.tar.gz

SOURCES/60-fadump.install

@@ -0,0 +1,31 @@
+#!/usr/bin/bash
+
+COMMAND="$1"
+KERNEL_VERSION="$2"
+
+if ! [[ ${KERNEL_INSTALL_MACHINE_ID-x} ]]; then
+    exit 0
+fi
+
+# Currently, fadump is supported only in environments with
+# writable /boot directory.
+if [[ ! -w "/boot" ]]; then
+    exit 0
+fi
+
+FADUMP_INITRD="/boot/.initramfs-${KERNEL_VERSION}.img.default"
+FADUMP_INITRD_CHECKSUM="$FADUMP_INITRD.checksum"
+
+ret=0
+case "$COMMAND" in
+    add)
+        # Do nothing, fadump initramfs is strictly host only
+        # and managed by kdump service
+        ;;
+    remove)
+        rm -f -- "$FADUMP_INITRD"
+        rm -f -- "$FADUMP_INITRD_CHECKSUM"
+        ret=$?
+        ;;
+esac
+exit $ret

SOURCES/92-crashkernel.install

@@ -0,0 +1,13 @@
+#!/usr/bin/bash
+
+COMMAND="$1"
+KERNEL_VERSION="$2"
+KDUMP_INITRD_DIR_ABS="$3"
+KERNEL_IMAGE="$4"
+
+case "$COMMAND" in
+add)
+	kdumpctl _reset-crashkernel-for-installed_kernel "$KERNEL_VERSION"
+	exit 0
+	;;
+esac

SOURCES/98-kexec.rules.ppc64

@@ -17,6 +17,6 @@ GOTO="kdump_reload_end"
 
 LABEL="kdump_reload_cpu"
 
-RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; ! test -f /sys/kernel/fadump_enabled || cat /sys/kernel/fadump_enabled | grep 0  || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
+RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; ! test -f /sys/kernel/fadump/enabled || cat /sys/kernel/fadump/enabled | grep 0  || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
 
 LABEL="kdump_reload_end"

SOURCES/crashkernel-howto.txt

@@ -0,0 +1,120 @@
+Introduction
+============
+
+This document describes features the kexec-tools package provides for setting
+and estimating the crashkernel value.
+
+Kdump lives in a pre-reserved chunk of memory, and the size of the reserved
+memory is specified by the `crashkernel=` kernel parameter. It's hard to
+estimate an accurate `crashkernel=` value, so it's always recommended to test
+kdump after you updated the `crashkernel=` value or changed the dump target.
+
+
+Default crashkernel value
+=========================
+
+Latest kexec-tools provides "kdumpctl get-default-crashkernel" to retrieve
+the default crashkernel value,
+
+	$ echo $(kdumpctl get-default-crashkernel)
+	1G-4G:192M,4G-64G:256M,64G-:512M
+
+It will be taken as the default value of 'crashkernel=', you can use
+this value as a reference for setting crashkernel value manually.
+
+
+New installed system
+====================
+
+Anaconda is the OS installer which sets all the kernel boot cmdline on a newly
+installed system. If kdump is enabled during Anaconda installation, Anaconda
+will use the default crashkernel value as the default `crashkernel=` value on
+the newly installed system.
+
+Users can override the value during Anaconda installation manually.
+
+
+Auto update of crashkernel boot parameter
+=========================================
+
+A new release of kexec-tools could update the default crashkernel value.  By
+default, kexec-tools would reset crashkernel to the new default value if it
+detects the old default crashkernel value is used by installed kernels. If you
+don't want kexec-tools to update the old default crashkernel to the new default
+crashkernel, you can change auto_reset_crashkernel to no in kdump.conf.
+
+Supported Bootloaders
+---------------------
+
+This auto update only works with GRUB2 and ZIPL, as kexec-tools heavily depends
+on `grubby`. If other boot loaders are used, the user will have to update the
+`crashkernel=` value manually.
+
+
+Reset crashkernel to default value
+==================================
+
+kexec-tools only perform the auto update of crashkernel value when it can
+confirm the boot kernel's crashkernel value is using its corresponding default
+value and auto_reset_crashkernel=yes in kdump.conf. In other cases, the user
+can reset the crashkernel value by themselves.
+
+Reset using kdumpctl
+--------------------
+
+To make it easier to reset the `crashkernel=` kernel cmdline to this default
+value properly, `kdumpctl` also provides a sub-command:
+
+	`kdumpctl reset-crashkernel [--kernel=path_to_kernel] [--reboot]`
+
+This command will reset the bootloader's kernel cmdline to the default value.
+It will also update bootloader config if the bootloader has a standalone config
+file. User will have to reboot the machine after this command to make it take
+effect if --reboot is not specified. For more details, please refer to the
+reset-crashkernel command in `man kdumpctl`.
+
+Reset manually
+--------------
+
+To reset the crashkernel value manually, it's recommended to use utils like
+`grubby`. A one liner script for resetting `crashkernel=` value of all installed
+kernels to the default value is:
+
+	grubby --update-kernel ALL --args "crashkernel=$(kdumpctl get-default-crashkernel)"
+
+NOTE: On s390x you also need to run zipl for the change to take effect.
+
+Estimate crashkernel
+====================
+
+The best way to estimate a usable crashkernel value is by testing kdump
+manually.  And you can set crashkernel to a large value, then adjust the
+crashkernel value to an acceptable value gradually.
+
+`kdumpctl` also provides a sub-command for doing rough estimating without
+triggering kdump:
+
+	`kdumpctl estimate`
+
+The output will be like this:
+
+```
+      Encrypted kdump target requires extra memory, assuming using the keyslot with minimum memory requirement
+
+      Reserved crashkernel:    256M
+      Recommended crashkernel: 655M
+
+      Kernel image size:   47M
+      Kernel modules size: 12M
+      Initramfs size:      19M
+      Runtime reservation: 64M
+      LUKS required size:  512M
+      Large modules:
+          xfs: 1892352
+          nouveau: 2318336
+      WARNING: Current crashkernel size is lower than recommended size 655M.
+```
+
+It will generate a summary report about the estimated memory consumption
+of each component of kdump. The value may not be accurate enough, but
+would be a good start for finding a suitable crashkernel value.

SOURCES/dracut-early-kdump-module-setup.sh

@@ -6,9 +6,8 @@ KDUMP_KERNEL=""
 KDUMP_INITRD=""
 
 check() {
-    if [ ! -f /etc/sysconfig/kdump ] || [ ! -f /lib/kdump/kdump-lib.sh ]\
+    if [[ ! -f /etc/sysconfig/kdump ]] || [[ ! -f /lib/kdump/kdump-lib.sh ]] \
-        || [ -n "${IN_KDUMP}" ]
+        || [[ -n ${IN_KDUMP} ]]; then
-    then
         return 1
     fi
     return 255
@@ -25,7 +24,7 @@ prepare_kernel_initrd() {
     prepare_kdump_bootinfo
 
     # $kernel is a variable from dracut
-    if [ "$KDUMP_KERNELVER" != $kernel ]; then
+    if [[ $KDUMP_KERNELVER != "$kernel" ]]; then
         dwarn "Using kernel version '$KDUMP_KERNELVER' for early kdump," \
             "but the initramfs is generated for kernel version '$kernel'"
     fi
@@ -33,12 +32,12 @@ prepare_kernel_initrd() {
 
 install() {
     prepare_kernel_initrd
-    if [ ! -f "$KDUMP_KERNEL" ]; then
+    if [[ ! -f $KDUMP_KERNEL ]]; then
         derror "Could not find required kernel for earlykdump," \
             "earlykdump will not work!"
         return 1
     fi
-    if [ ! -f "$KDUMP_INITRD" ]; then
+    if [[ ! -f $KDUMP_INITRD ]]; then
         derror "Could not find required kdump initramfs for earlykdump," \
             "please ensure kdump initramfs is generated first," \
             "earlykdump will not work!"
@@ -51,7 +50,9 @@ install() {
     inst_binary "/usr/bin/gawk" "/usr/bin/awk"
     inst_binary "/usr/bin/logger" "/usr/bin/logger"
     inst_binary "/usr/bin/printf" "/usr/bin/printf"
+    inst_binary "/usr/bin/xargs" "/usr/bin/xargs"
     inst_script "/lib/kdump/kdump-lib.sh" "/lib/kdump-lib.sh"
+    inst_script "/lib/kdump/kdump-lib-initramfs.sh" "/lib/kdump/kdump-lib-initramfs.sh"
     inst_script "/lib/kdump/kdump-logger.sh" "/lib/kdump-logger.sh"
     inst_hook cmdline 00 "$moddir/early-kdump.sh"
     inst_binary "$KDUMP_KERNEL"

SOURCES/dracut-early-kdump.sh

@@ -14,9 +14,8 @@ EARLY_KEXEC_ARGS=""
 . /lib/kdump-lib.sh
 . /lib/kdump-logger.sh
 
-#initiate the kdump logger
+# initiate the kdump logger
-dlog_init
+if ! dlog_init; then
-if [ $? -ne 0 ]; then
         echo "failed to initiate the kdump logger."
         exit 1
 fi
@@ -30,8 +29,7 @@ prepare_parameters()
 
 early_kdump_load()
 {
-    check_kdump_feasibility
+    if ! check_kdump_feasibility; then
-    if [ $? -ne 0 ]; then
         return 1
     fi
 
@@ -40,8 +38,7 @@ early_kdump_load()
         return 1
     fi
 
-    check_current_kdump_status
+    if is_kernel_loaded "kdump"; then
-    if [ $? == 0 ]; then
         return 1
     fi
 
@@ -56,10 +53,9 @@ early_kdump_load()
 	--command-line=$EARLY_KDUMP_CMDLINE --initrd=$EARLY_KDUMP_INITRD \
 	$EARLY_KDUMP_KERNEL"
 
-    $KEXEC ${EARLY_KEXEC_ARGS} $standard_kexec_args \
+    if $KEXEC $EARLY_KEXEC_ARGS $standard_kexec_args \
         --command-line="$EARLY_KDUMP_CMDLINE" \
-        --initrd=$EARLY_KDUMP_INITRD $EARLY_KDUMP_KERNEL
+        --initrd=$EARLY_KDUMP_INITRD $EARLY_KDUMP_KERNEL; then
-    if [ $? == 0 ]; then
         dinfo "kexec: loaded early-kdump kernel"
         return 0
     else

SOURCES/dracut-kdump-emergency.service

@@ -1,27 +1,26 @@
-#  This file is part of systemd.
+# This service will run the real kdump error handler code. Executing the
-#
+# failure action configured in kdump.conf
-#  systemd is free software; you can redistribute it and/or modify it
-#  under the terms of the GNU Lesser General Public License as published by
-#  the Free Software Foundation; either version 2.1 of the License, or
-#  (at your option) any later version.
-
-# This service will be placed in kdump initramfs and replace both the systemd
-# emergency service and dracut emergency shell. IOW, any emergency will be
-# kick this service and in turn isolating to kdump error handler.
 
 [Unit]
-Description=Kdump Emergency
+Description=Kdump Error Handler
 DefaultDependencies=no
-IgnoreOnIsolate=yes
+After=systemd-vconsole-setup.service
+Wants=systemd-vconsole-setup.service
 
 [Service]
-ExecStart=/usr/bin/systemctl --no-block isolate kdump-error-handler.service
+Environment=HOME=/
+Environment=DRACUT_SYSTEMD=1
+Environment=NEWROOT=/sysroot
+WorkingDirectory=/
+ExecStart=/bin/kdump.sh --error-handler
+ExecStopPost=-/bin/rm -f -- /.console_lock
 Type=oneshot
 StandardInput=tty-force
 StandardOutput=inherit
 StandardError=inherit
 KillMode=process
 IgnoreSIGPIPE=no
+TasksMax=infinity
 
 # Bash ignores SIGTERM, so we send SIGHUP instead, to ensure that bash
 # terminates cleanly.

SOURCES/dracut-kdump-error-handler.service

@@ -1,33 +0,0 @@
-#  This file is part of systemd.
-#
-#  systemd is free software; you can redistribute it and/or modify it
-#  under the terms of the GNU Lesser General Public License as published by
-#  the Free Software Foundation; either version 2.1 of the License, or
-#  (at your option) any later version.
-
-# This service will run the real kdump error handler code. Executing the
-# failure action configured in kdump.conf
-
-[Unit]
-Description=Kdump Error Handler
-DefaultDependencies=no
-After=systemd-vconsole-setup.service
-Wants=systemd-vconsole-setup.service
-AllowIsolate=yes
-
-[Service]
-Environment=HOME=/
-Environment=DRACUT_SYSTEMD=1
-Environment=NEWROOT=/sysroot
-WorkingDirectory=/
-ExecStart=/bin/kdump-error-handler.sh
-Type=oneshot
-StandardInput=tty-force
-StandardOutput=inherit
-StandardError=inherit
-KillMode=process
-IgnoreSIGPIPE=no
-
-# Bash ignores SIGTERM, so we send SIGHUP instead, to ensure that bash
-# terminates cleanly.
-KillSignal=SIGHUP

SOURCES/dracut-kdump-error-handler.sh

@@ -1,10 +0,0 @@
-#!/bin/sh
-
-. /lib/kdump-lib-initramfs.sh
-
-set -o pipefail
-export PATH=$PATH:$KDUMP_SCRIPT_DIR
-
-get_kdump_confs
-do_failure_action
-do_final_action

SOURCES/dracut-kdump.sh

@@ -1,22 +1,311 @@
 #!/bin/sh
-
+#
-# continue here only if we have to save dump.
+# The main kdump routine in capture kernel, bash may not be the
-if [ -f /etc/fadump.initramfs ] && [ ! -f /proc/device-tree/rtas/ibm,kernel-dump ] && [ ! -f /proc/device-tree/ibm,opal/dump/mpipl-boot ]; then
+# default shell. Any code added must be POSIX compliant.
-    exit 0
-fi
 
 . /lib/dracut-lib.sh
+. /lib/kdump-logger.sh
 . /lib/kdump-lib-initramfs.sh
 
-set -o pipefail
+#initiate the kdump logger
+if ! dlog_init; then
+	echo "failed to initiate the kdump logger."
+	exit 1
+fi
+
+KDUMP_PATH="/var/crash"
+KDUMP_LOG_FILE="/run/initramfs/kexec-dmesg.log"
+CORE_COLLECTOR=""
+DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 7 -d 31"
+DMESG_COLLECTOR="/sbin/vmcore-dmesg"
+FAILURE_ACTION="systemctl reboot -f"
+DATEDIR=$(date +%Y-%m-%d-%T)
+HOST_IP='127.0.0.1'
+DUMP_INSTRUCTION=""
+SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
+DD_BLKSIZE=512
+FINAL_ACTION="systemctl reboot -f"
+KDUMP_PRE=""
+KDUMP_POST=""
+NEWROOT="/sysroot"
+OPALCORE="/sys/firmware/opal/mpipl/core"
+KDUMP_CONF_PARSED="/tmp/kdump.conf.$$"
+
+# POSIX doesn't have pipefail, only apply when using bash
+# shellcheck disable=SC3040
+[ -n "$BASH" ] && set -o pipefail
+
 DUMP_RETVAL=0
 
-export PATH=$PATH:$KDUMP_SCRIPT_DIR
+kdump_read_conf > $KDUMP_CONF_PARSED
+
+get_kdump_confs()
+{
+	while read -r config_opt config_val; do
+		# remove inline comments after the end of a directive.
+		case "$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"
+			;;
+		failure_action | default)
+			case $config_val in
+			shell)
+				FAILURE_ACTION="kdump_emergency_shell"
+				;;
+			reboot)
+				FAILURE_ACTION="systemctl reboot -f && exit"
+				;;
+			halt)
+				FAILURE_ACTION="halt && exit"
+				;;
+			poweroff)
+				FAILURE_ACTION="systemctl poweroff -f && exit"
+				;;
+			dump_to_rootfs)
+				FAILURE_ACTION="dump_to_rootfs"
+				;;
+			esac
+			;;
+		final_action)
+			case $config_val in
+			reboot)
+				FINAL_ACTION="systemctl reboot -f"
+				;;
+			halt)
+				FINAL_ACTION="halt"
+				;;
+			poweroff)
+				FINAL_ACTION="systemctl poweroff -f"
+				;;
+			esac
+			;;
+		esac
+	done < "$KDUMP_CONF_PARSED"
+
+	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
+}
+
+# store the kexec kernel log to a file.
+save_log()
+{
+	dmesg -T > $KDUMP_LOG_FILE
+
+	if command -v journalctl > /dev/null; then
+		journalctl -ab >> $KDUMP_LOG_FILE
+	fi
+	chmod 600 $KDUMP_LOG_FILE
+}
+
+# $1: dump path, must be a mount point
+dump_fs()
+{
+	ddebug "dump_fs _mp=$1"
+
+	if ! is_mounted "$1"; then
+		dinfo "dump path '$1' is not mounted, trying to mount..."
+		if ! mount --target "$1"; then
+			derror "failed to dump to '$1', it's not a mount point!"
+			return 1
+		fi
+	fi
+
+	# Remove -F in makedumpfile case. We don't want a flat format dump here.
+	case $CORE_COLLECTOR in
+	*makedumpfile*)
+		CORE_COLLECTOR=$(echo "$CORE_COLLECTOR" | sed -e "s/-F//g")
+		;;
+	esac
+
+	_dump_fs_path=$(echo "$1/$KDUMP_PATH/$HOST_IP-$DATEDIR/" | tr -s /)
+	dinfo "saving to $_dump_fs_path"
+
+	# Only remount to read-write mode if the dump target is mounted read-only.
+	_dump_mnt_op=$(get_mount_info OPTIONS target "$1" -f)
+	case $_dump_mnt_op in
+	ro*)
+		dinfo "Remounting the dump target in rw mode."
+		mount -o remount,rw "$1" || return 1
+		;;
+	esac
+
+	mkdir -p "$_dump_fs_path" || return 1
+
+	save_vmcore_dmesg_fs ${DMESG_COLLECTOR} "$_dump_fs_path"
+	save_opalcore_fs "$_dump_fs_path"
+
+	dinfo "saving vmcore"
+	$CORE_COLLECTOR /proc/vmcore "$_dump_fs_path/vmcore-incomplete"
+	_dump_exitcode=$?
+	if [ $_dump_exitcode -eq 0 ]; then
+		sync -f "$_dump_fs_path/vmcore-incomplete"
+		_sync_exitcode=$?
+		if [ $_sync_exitcode -eq 0 ]; then
+			mv "$_dump_fs_path/vmcore-incomplete" "$_dump_fs_path/vmcore"
+			dinfo "saving vmcore complete"
+		else
+			derror "sync vmcore failed, exitcode:$_sync_exitcode"
+			return 1
+		fi
+	else
+		derror "saving vmcore failed, exitcode:$_dump_exitcode"
+	fi
+
+	dinfo "saving the $KDUMP_LOG_FILE to $_dump_fs_path/"
+	save_log
+	mv "$KDUMP_LOG_FILE" "$_dump_fs_path/"
+	if [ $_dump_exitcode -ne 0 ]; then
+		return 1
+	fi
+
+	# improper kernel cmdline can cause the failure of echo, we can ignore this kind of failure
+	return 0
+}
+
+# $1: dmesg collector
+# $2: dump path
+save_vmcore_dmesg_fs()
+{
+	dinfo "saving vmcore-dmesg.txt to $2"
+	if $1 /proc/vmcore > "$2/vmcore-dmesg-incomplete.txt"; then
+		mv "$2/vmcore-dmesg-incomplete.txt" "$2/vmcore-dmesg.txt"
+		chmod 600 "$2/vmcore-dmesg.txt"
+
+		# Make sure file is on disk. There have been instances where later
+		# saving vmcore failed and system rebooted without sync and there
+		# was no vmcore-dmesg.txt available.
+		sync
+		dinfo "saving vmcore-dmesg.txt complete"
+	else
+		if [ -f "$2/vmcore-dmesg-incomplete.txt" ]; then
+			chmod 600 "$2/vmcore-dmesg-incomplete.txt"
+		fi
+		derror "saving vmcore-dmesg.txt failed"
+	fi
+}
+
+# $1: dump path
+save_opalcore_fs()
+{
+	if [ ! -f $OPALCORE ]; then
+		# Check if we are on an old kernel that uses a different path
+		if [ -f /sys/firmware/opal/core ]; then
+			OPALCORE="/sys/firmware/opal/core"
+		else
+			return 0
+		fi
+	fi
+
+	dinfo "saving opalcore:$OPALCORE to $1/opalcore"
+	if ! cp $OPALCORE "$1/opalcore"; then
+		derror "saving opalcore failed"
+		return 1
+	fi
+
+	sync
+	dinfo "saving opalcore complete"
+	return 0
+}
+
+dump_to_rootfs()
+{
+
+	if [ "$(systemctl status dracut-initqueue | sed -n "s/^\s*Active: \(\S*\)\s.*$/\1/p")" = "inactive" ]; then
+		dinfo "Trying to bring up initqueue for rootfs mount"
+		systemctl start dracut-initqueue
+	fi
+
+	dinfo "Clean up dead systemd services"
+	systemctl cancel
+	dinfo "Waiting for rootfs mount, will timeout after 90 seconds"
+	systemctl start --no-block sysroot.mount
+
+	_loop=0
+	while [ $_loop -lt 90 ] && ! is_mounted /sysroot; do
+		sleep 1
+		_loop=$((_loop + 1))
+	done
+
+	if ! is_mounted /sysroot; then
+		derror "Failed to mount rootfs"
+		return
+	fi
+
+	ddebug "NEWROOT=$NEWROOT"
+	dump_fs $NEWROOT
+}
+
+kdump_emergency_shell()
+{
+	ddebug "Switching to kdump emergency shell..."
+
+	[ -f /etc/profile ] && . /etc/profile
+	export PS1='kdump:${PWD}# '
+
+	. /lib/dracut-lib.sh
+	if [ -f /dracut-state.sh ]; then
+		. /dracut-state.sh 2> /dev/null
+	fi
+
+	source_conf /etc/conf.d
+
+	type plymouth > /dev/null 2>&1 && plymouth quit
+
+	source_hook "emergency"
+	while read -r _tty rest; do
+		(
+			echo
+			echo
+			echo 'Entering kdump emergency mode.'
+			echo 'Type "journalctl" to view system logs.'
+			echo 'Type "rdsosreport" to generate a sosreport, you can then'
+			echo 'save it elsewhere and attach it to a bug report.'
+			echo
+			echo
+		) > "/dev/$_tty"
+	done < /proc/consoles
+	sh -i -l
+	/bin/rm -f -- /.console_lock
+}
+
+do_failure_action()
+{
+	dinfo "Executing failure action $FAILURE_ACTION"
+	eval $FAILURE_ACTION
+}
+
+do_final_action()
+{
+	dinfo "Executing final action $FINAL_ACTION"
+	eval $FINAL_ACTION
+}
 
 do_dump()
 {
-    local _ret
-
 	eval $DUMP_INSTRUCTION
 	_ret=$?
 
@@ -29,8 +318,6 @@ do_dump()
 
 do_kdump_pre()
 {
-    local _ret
-
 	if [ -n "$KDUMP_PRE" ]; then
 		"$KDUMP_PRE"
 		_ret=$?
@@ -55,8 +342,6 @@ do_kdump_pre()
 
 do_kdump_post()
 {
-    local _ret
-
 	if [ -d /etc/kdump/post.d ]; then
 		for file in /etc/kdump/post.d/*; do
 			"$file" "$1"
@@ -76,110 +361,87 @@ do_kdump_post()
 	fi
 }
 
-add_dump_code()
+# $1: block target, eg. /dev/sda
-{
-    DUMP_INSTRUCTION=$1
-}
-
 dump_raw()
 {
-    local _raw=$1
+	[ -b "$1" ] || return 1
 
-    [ -b "$_raw" ] || return 1
+	dinfo "saving to raw disk $1"
 
-    dinfo "saving to raw disk $_raw"
+	if ! echo "$CORE_COLLECTOR" | grep -q makedumpfile; then
-
+		_src_size=$(stat --format %s /proc/vmcore)
-    if ! $(echo -n $CORE_COLLECTOR|grep -q makedumpfile); then
+		_src_size_mb=$((_src_size / 1048576))
-        _src_size=`ls -l /proc/vmcore | cut -d' ' -f5`
+		/kdumpscripts/monitor_dd_progress $_src_size_mb &
-        _src_size_mb=$(($_src_size / 1048576))
-        monitor_dd_progress $_src_size_mb &
 	fi
 
 	dinfo "saving vmcore"
-    $CORE_COLLECTOR /proc/vmcore | dd of=$_raw bs=$DD_BLKSIZE >> /tmp/dd_progress_file 2>&1 || return 1
+	$CORE_COLLECTOR /proc/vmcore | dd of="$1" bs=$DD_BLKSIZE >> /tmp/dd_progress_file 2>&1 || return 1
 	sync
 
 	dinfo "saving vmcore complete"
 	return 0
 }
 
+# $1: ssh key file
+# $2: ssh address in <user>@<host> format
 dump_ssh()
 {
-    local _ret=0
+	_ret=0
-    local _exitcode=0 _exitcode2=0
+	_ssh_opt="-i $1 -o BatchMode=yes -o StrictHostKeyChecking=yes"
-    local _opt="-i $1 -o BatchMode=yes -o StrictHostKeyChecking=yes"
+	_ssh_dir="$KDUMP_PATH/$HOST_IP-$DATEDIR"
-    local _dir="$KDUMP_PATH/$HOST_IP-$DATEDIR"
+	if is_ipv6_address "$2"; then
-    local _host=$2
+		_scp_address=${2%@*}@"[${2#*@}]"
-    local _vmcore="vmcore"
+	else
-    local _ipv6_addr="" _username=""
+		_scp_address=$2
+	fi
 
-    dinfo "saving to $_host:$_dir"
+	dinfo "saving to $2:$_ssh_dir"
 
 	cat /var/lib/random-seed > /dev/urandom
-    ssh -q $_opt $_host mkdir -p $_dir || return 1
+	ssh -q $_ssh_opt "$2" mkdir -p "$_ssh_dir" || return 1
-
-    save_vmcore_dmesg_ssh ${DMESG_COLLECTOR} ${_dir} "${_opt}" $_host
-    save_opalcore_ssh ${_dir} "${_opt}" $_host
 
+	save_vmcore_dmesg_ssh "$DMESG_COLLECTOR" "$_ssh_dir" "$_ssh_opt" "$2"
 	dinfo "saving vmcore"
 
-    if is_ipv6_address "$_host"; then
+	save_opalcore_ssh "$_ssh_dir" "$_ssh_opt" "$2" "$_scp_address"
-        _username=${_host%@*}
-        _ipv6_addr="[${_host#*@}]"
-    fi
 
 	if [ "${CORE_COLLECTOR%%[[:blank:]]*}" = "scp" ]; then
-        if [ -n "$_username" ] && [ -n "$_ipv6_addr" ]; then
+		scp -q $_ssh_opt /proc/vmcore "$_scp_address:$_ssh_dir/vmcore-incomplete"
-            scp -q $_opt /proc/vmcore "$_username@$_ipv6_addr:$_dir/vmcore-incomplete"
+		_ret=$?
+		_vmcore="vmcore"
 	else
-            scp -q $_opt /proc/vmcore "$_host:$_dir/vmcore-incomplete"
+		$CORE_COLLECTOR /proc/vmcore | ssh $_ssh_opt "$2" "umask 0077 && dd bs=512 of='$_ssh_dir/vmcore-incomplete'"
-        fi
+		_ret=$?
-        _exitcode=$?
-    else
-        $CORE_COLLECTOR /proc/vmcore | ssh $_opt $_host "umask 0077 && dd bs=512 of=$_dir/vmcore-incomplete"
-        _exitcode=$?
 		_vmcore="vmcore.flat"
 	fi
 
-    if [ $_exitcode -eq 0 ]; then
+	if [ $_ret -eq 0 ]; then
-        ssh $_opt $_host "mv $_dir/vmcore-incomplete $_dir/$_vmcore"
+		ssh $_ssh_opt "$2" "mv '$_ssh_dir/vmcore-incomplete' '$_ssh_dir/$_vmcore'"
-        _exitcode2=$?
+		_ret=$?
-        if [ $_exitcode2 -ne 0 ]; then
+		if [ $_ret -ne 0 ]; then
-            derror "moving vmcore failed, _exitcode:$_exitcode2"
+			derror "moving vmcore failed, exitcode:$_ret"
 		else
 			dinfo "saving vmcore complete"
 		fi
 	else
-        derror "saving vmcore failed, _exitcode:$_exitcode"
+		derror "saving vmcore failed, exitcode:$_ret"
 	fi
 
-    dinfo "saving the $KDUMP_LOG_FILE to $_host:$_dir/"
+	dinfo "saving the $KDUMP_LOG_FILE to $2:$_ssh_dir/"
 	save_log
-    if [ -n "$_username" ] && [ -n "$_ipv6_addr" ]; then
+	if ! scp -q $_ssh_opt $KDUMP_LOG_FILE "$_scp_address:$_ssh_dir/"; then
-        scp -q $_opt $KDUMP_LOG_FILE "$_username@$_ipv6_addr:$_dir/"
-    else
-        scp -q $_opt $KDUMP_LOG_FILE "$_host:$_dir/"
-    fi
-    _ret=$?
-    if [ $_ret -ne 0 ]; then
 		derror "saving log file failed, _exitcode:$_ret"
 	fi
 
-    if [ $_exitcode -ne 0 ] || [ $_exitcode2 -ne 0 ];then
+	return $_ret
-        return 1
-    fi
-
-    return 0
 }
 
-save_opalcore_ssh() {
+# $1: dump path
-    local _path=$1
+# $2: ssh opts
-    local _opts="$2"
+# $3: ssh address in <user>@<host> format
-    local _location=$3
+# $4: scp address, similar with ssh address but IPv6 addresses are quoted
-    local _user_name="" _ipv6addr=""
+save_opalcore_ssh()
-
+{
-    ddebug "_path=$_path _opts=$_opts _location=$_location"
-
 	if [ ! -f $OPALCORE ]; then
 		# Check if we are on an old kernel that uses a different path
 		if [ -f /sys/firmware/opal/core ]; then
@@ -189,120 +451,153 @@ save_opalcore_ssh() {
 		fi
 	fi
 
-    if is_ipv6_address "$_host"; then
+	dinfo "saving opalcore:$OPALCORE to $3:$1"
-        _user_name=${_location%@*}
-        _ipv6addr="[${_location#*@}]"
-    fi
 
-    dinfo "saving opalcore:$OPALCORE to $_location:$_path"
+	if ! scp $2 $OPALCORE "$4:$1/opalcore-incomplete"; then
-
-    if [ -n "$_user_name" ] && [ -n "$_ipv6addr" ]; then
-        scp $_opts $OPALCORE $_user_name@$_ipv6addr:$_path/opalcore-incomplete
-    else
-        scp $_opts $OPALCORE $_location:$_path/opalcore-incomplete
-    fi
-    if [ $? -ne 0 ]; then
 		derror "saving opalcore failed"
 		return 1
 	fi
 
-    ssh $_opts $_location mv $_path/opalcore-incomplete $_path/opalcore
+	ssh $2 "$3" mv "$1/opalcore-incomplete" "$1/opalcore"
 	dinfo "saving opalcore complete"
 	return 0
 }
 
-save_vmcore_dmesg_ssh() {
+# $1: dmesg collector
-    local _dmesg_collector=$1
+# $2: dump path
-    local _path=$2
+# $3: ssh opts
-    local _opts="$3"
+# $4: ssh address in <user>@<host> format
-    local _location=$4
+save_vmcore_dmesg_ssh()
-
+{
-    dinfo "saving vmcore-dmesg.txt to $_location:$_path"
+	dinfo "saving vmcore-dmesg.txt to $4:$2"
-    $_dmesg_collector /proc/vmcore | ssh $_opts $_location "umask 0077 && dd of=$_path/vmcore-dmesg-incomplete.txt"
+	if $1 /proc/vmcore | ssh $3 "$4" "umask 0077 && dd of='$2/vmcore-dmesg-incomplete.txt'"; then
-    _exitcode=$?
+		ssh -q $3 "$4" mv "$2/vmcore-dmesg-incomplete.txt" "$2/vmcore-dmesg.txt"
-
-    if [ $_exitcode -eq 0 ]; then
-        ssh -q $_opts $_location mv $_path/vmcore-dmesg-incomplete.txt $_path/vmcore-dmesg.txt
 		dinfo "saving vmcore-dmesg.txt complete"
 	else
 		derror "saving vmcore-dmesg.txt failed"
 	fi
 }
 
-get_host_ip()
+wait_online_network()
 {
-    local _host
+	# In some cases, network may still not be ready because nm-online is called
-    if is_nfs_dump_target || is_ssh_dump_target
+	# with "-s" which means to wait for NetworkManager startup to complete, rather
-    then
+	# than waiting for network connectivity specifically. Wait 10mins more for the
-        kdumpnic=$(getarg kdumpnic=)
+	# network to be truely ready in these cases.
-        [ -z "$kdumpnic" ] && derror "failed to get kdumpnic!" && return 1
+	_loop=0
-        _host=`ip addr show dev $kdumpnic|grep '[ ]*inet'`
+	while [ $_loop -lt 600 ]; do
-        [ $? -ne 0 ] && derror "wrong kdumpnic: $kdumpnic" && return 1
+		sleep 1
-        _host=`echo $_host | head -n 1 | cut -d' ' -f2`
+		_loop=$((_loop + 1))
-        _host="${_host%%/*}"
+		if _route=$(kdump_get_ip_route "$1" 2> /dev/null); then
-        [ -z "$_host" ] && derror "wrong kdumpnic: $kdumpnic" && return 1
+			printf "%s" "$_route"
-        HOST_IP=$_host
+			return
+		else
+			dwarn "Waiting for network to be ready (${_loop}s / 10min)"
 		fi
-    return 0
+	done
+
+	derror "Oops. The network still isn't ready after waiting 10mins."
+	exit 1
 }
 
-read_kdump_conf()
+get_host_ip()
 {
-    if [ ! -f "$KDUMP_CONF" ]; then
+
-        derror "$KDUMP_CONF not found"
+	if ! is_nfs_dump_target && ! is_ssh_dump_target; then
+		return 0
+	fi
+
+	_kdump_remote_ip=$(getarg kdump_remote_ip=)
+
+	if [ -z "$_kdump_remote_ip" ]; then
+		derror "failed to get remote IP address!"
+		return 1
+	fi
+
+	if ! _route=$(wait_online_network "$_kdump_remote_ip"); then
+		return 1
+	fi
+
+	_netdev=$(kdump_get_ip_route_field "$_route" "dev")
+
+	if ! _kdumpip=$(ip addr show dev "$_netdev" | grep '[ ]*inet'); then
+		derror "Failed to get IP of $_netdev"
+		return 1
+	fi
+
+	_kdumpip=$(echo "$_kdumpip" | head -n 1 | awk '{print $2}')
+	_kdumpip="${_kdumpip%%/*}"
+	HOST_IP=$_kdumpip
+}
+
+read_kdump_confs()
+{
+	if [ ! -f "$KDUMP_CONFIG_FILE" ]; then
+		derror "$KDUMP_CONFIG_FILE not found"
 		return
 	fi
 
 	get_kdump_confs
 
 	# rescan for add code for dump target
-    while read config_opt config_val;
+	while read -r config_opt config_val; do
-    do
 		# remove inline comments after the end of a directive.
 		case "$config_opt" in
 		dracut_args)
 			config_val=$(get_dracut_args_target "$config_val")
 			if [ -n "$config_val" ]; then
 				config_val=$(get_mntpoint_from_target "$config_val")
-                add_dump_code "dump_fs $config_val"
+				DUMP_INSTRUCTION="dump_fs $config_val"
 			fi
 			;;
-        ext[234]|xfs|btrfs|minix|nfs)
+		ext[234] | xfs | btrfs | minix | nfs | virtiofs)
 			config_val=$(get_mntpoint_from_target "$config_val")
-            add_dump_code "dump_fs $config_val"
+			DUMP_INSTRUCTION="dump_fs $config_val"
 			;;
 		raw)
-            add_dump_code "dump_raw $config_val"
+			DUMP_INSTRUCTION="dump_raw $config_val"
 			;;
 		ssh)
-            add_dump_code "dump_ssh $SSH_KEY_LOCATION $config_val"
+			DUMP_INSTRUCTION="dump_ssh $SSH_KEY_LOCATION $config_val"
 			;;
 		esac
-    done <<< "$(read_strip_comments $KDUMP_CONF)"
+	done < "$KDUMP_CONF_PARSED"
 }
 
 fence_kdump_notify()
 {
 	if [ -n "$FENCE_KDUMP_NODES" ]; then
+		# shellcheck disable=SC2086
 		$FENCE_KDUMP_SEND $FENCE_KDUMP_ARGS $FENCE_KDUMP_NODES &
 	fi
 }
 
-read_kdump_conf
+if [ "$1" = "--error-handler" ]; then
+	get_kdump_confs
+	do_failure_action
+	do_final_action
+
+	exit $?
+fi
+
+# continue here only if we have to save dump.
+if [ -f /etc/fadump.initramfs ] && [ ! -f /proc/device-tree/rtas/ibm,kernel-dump ] && [ ! -f /proc/device-tree/ibm,opal/dump/mpipl-boot ]; then
+	exit 0
+fi
+
+read_kdump_confs
 fence_kdump_notify
 
-get_host_ip
+if ! get_host_ip; then
-if [ $? -ne 0 ]; then
 	derror "get_host_ip exited with non-zero status!"
 	exit 1
 fi
 
 if [ -z "$DUMP_INSTRUCTION" ]; then
-    add_dump_code "dump_fs $NEWROOT"
+	DUMP_INSTRUCTION="dump_fs $NEWROOT"
 fi
 
-do_kdump_pre
+if ! do_kdump_pre; then
-if [ $? -ne 0 ]; then
 	derror "kdump_pre script exited with non-zero status!"
 	do_final_action
 	# During systemd service to reboot the machine, stop this shell script running
@@ -312,8 +607,7 @@ make_trace_mem "kdump saving vmcore" '1:shortmem' '2+:mem' '3+:slab'
 do_dump
 DUMP_RETVAL=$?
 
-do_kdump_post $DUMP_RETVAL
+if ! do_kdump_post $DUMP_RETVAL; then
-if [ $? -ne 0 ]; then
 	derror "kdump_post script exited with non-zero status!"
 fi
 

SOURCES/fadump-howto.txt

@@ -39,7 +39,7 @@ kernel are one and the same on ppc64.
 If you're reading this document, you should already have kexec-tools
 installed. If not, you install it via the following command:
 
-    # yum install kexec-tools
+    # dnf install kexec-tools
 
 Fadump Operational Flow:
 
@@ -82,7 +82,7 @@ How to configure fadump:
 Again, we assume if you're reading this document, you should already have
 kexec-tools installed. If not, you install it via the following command:
 
-    # yum install kexec-tools
+    # dnf install kexec-tools
 
 Make the kernel to be configured with FADump as the default boot entry, if
 it isn't already:
@@ -94,20 +94,24 @@ anything interesting in the way of debug analysis, you'll also need to install
 the kernel-debuginfo package, of the same arch as your running kernel, and the
 crash utility:
 
-    # yum --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
+    # dnf --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
 
-Next up, we need to modify some boot parameters to enable firmware assisted
+Next up, we can enable firmware assisted dump and reserve the memory for boot
-dump. With the help of grubby, it's very easy to append "fadump=on" to the end
+memory preservation as specified in in the table of 'FADump Memory Requirements'
-of your kernel boot parameters. To reserve the appropriate amount of memory
+section:
-for boot memory preservation, pass 'crashkernel=X' kernel cmdline parameter.
+
-For the recommended value of X, see 'FADump Memory Requirements' section.
+   # kdumpctl reset-crashkernel --fadump=on
+
+Alternatively, you can use grubby to reserve custom amount of memory:
 
    # grubby --args="fadump=on crashkernel=6G" --update-kernel=/boot/vmlinuz-`uname -r`
 
 By default, FADump reserved memory will be initialized as CMA area to make the
 memory available through CMA allocator on the production kernel. We can opt out
 of this, making reserved memory unavailable to production kernel, by booting the
-linux kernel with 'fadump=nocma' instead of 'fadump=on'.
+linux kernel with 'fadump=nocma' instead of 'fadump=on':
+
+   # kdumpctl reset-crashkernel --fadump=nocma
 
 The term 'boot memory' means size of the low memory chunk that is required for
 a kernel to boot successfully when booted with restricted memory.  By default,
@@ -133,7 +137,7 @@ Then, start up kdump as well:
     # systemctl start kdump.service
 
 This should turn on the firmware assisted functionality in kernel by
-echo'ing 1 to /sys/kernel/fadump_registered, leaving the system ready
+echo'ing 1 to /sys/kernel/fadump/registered, leaving the system ready
 to capture a vmcore upon crashing. For journaling filesystems like XFS an
 additional step is required to ensure bootloader does not pick the
 older initrd (without vmcore capture scripts):
@@ -344,9 +348,12 @@ or
 OR
    # grubby --update-kernel=/boot/vmlinuz-`uname -r` --args="fadump=off"
 
-If KDump is to be used as the dump capturing mechanism, update the crashkernel
+Remove "crashkernel=" from kernel cmdline parameters:
-parameter (Else, remove "crashkernel=" parameter too, using grubby):
 
-   # grubby --update-kernel=/boot/vmlinuz-$kver --args="crashkernl=auto"
+   # grubby --update-kernel=/boot/vmlinuz-`uname -r` --remove-args="crashkernel"
+
+If KDump is to be used as the dump capturing mechanism, reset the crashkernel parameter:
+
+   # kdumpctl reset-crashkernel --fadump=off
 
 Reboot the system for the settings to take effect.

SOURCES/gen-kdump-conf.sh

@@ -1,7 +1,6 @@
 #!/bin/bash
 # $1: target arch
 
-
 SED_EXP=""
 
 generate()
@@ -20,6 +19,12 @@ generate()
 #
 # Supported options:
 #
+# auto_reset_crashkernel <yes|no>
+#           - whether to reset kernel crashkernel to new default value
+#             or not when kexec-tools updates the default crashkernel value and
+#             existing kernels using the old default kernel crashkernel value.
+#             The default value is yes.
+#
 # raw <partition>
 #           - Will dd /proc/vmcore into <partition>.
 #             Use persistent device names for partition devices,
@@ -41,11 +46,12 @@ generate()
 #
 # <fs type> <partition>
 #           - Will mount -t <fs type> <partition> <mnt>, and copy
-#             /proc/vmcore to <mnt>/<path>/%DATE/.
+#             /proc/vmcore to <mnt>/<path>/%HOST_IP-%DATE/.
 #             NOTE: <partition> can be a device node, label or uuid.
 #             It's recommended to use persistent device names
 #             such as /dev/vg/<devname>.
 #             Otherwise it's suggested to use label or uuid.
+#             Supported fs types: ext[234], xfs, btrfs, minix, virtiofs
 #
 # path <path>
 #           - "path" represents the file system path in which vmcore
@@ -174,11 +180,13 @@ generate()
 #ext4 /dev/vg/lv_kdump
 #ext4 LABEL=/boot
 #ext4 UUID=03138356-5e61-4ab3-b58e-27507ac41937
+#virtiofs myfs
 #nfs my.server.com:/export/tmp
 #nfs [2001:db8::1:2:3:4]:/export/tmp
 #ssh user@my.server.com
 #ssh user@2001:db8::1:2:3:4
 #sshkey /root/.ssh/kdump_id_rsa
+auto_reset_crashkernel yes
 path /var/crash
 core_collector makedumpfile -l --message-level 7 -d 31
 #core_collector scp
@@ -201,20 +209,20 @@ update_param()
 }
 
 case "$1" in
-aarch64)
+aarch64) ;;
-	;;
+
-i386)
+i386) ;;
-	;;
+
-ppc64)
+ppc64) ;;
-	;;
+
-ppc64le)
+ppc64le) ;;
-	;;
+
 s390x)
 	update_param core_collector \
 		"makedumpfile -c --message-level 7 -d 31"
 	;;
-x86_64)
+x86_64) ;;
-	;;
+
 *)
 	echo "Warning: Unknown architecture '$1', using default kdump.conf template."
 	;;

SOURCES/kdump-lib-initramfs.sh

@@ -1,248 +1,186 @@
-# These variables and functions are useful in 2nd kernel
+#!/bin/sh
+#
+# The code in this file will be used in initramfs environment, bash may
+# not be the default shell. Any code added must be POSIX compliant.
 
-. /lib/kdump-lib.sh
+DEFAULT_PATH="/var/crash/"
-. /lib/kdump-logger.sh
+KDUMP_CONFIG_FILE="/etc/kdump.conf"
+FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump"
+FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send"
+LVM_CONF="/etc/lvm/lvm.conf"
 
-KDUMP_PATH="/var/crash"
+# Read kdump config in well formated style
-KDUMP_LOG_FILE="/run/initramfs/kexec-dmesg.log"
+kdump_read_conf()
-CORE_COLLECTOR=""
+{
-DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 7 -d 31"
+	# Following steps are applied in order: strip trailing comment, strip trailing space,
-DMESG_COLLECTOR="/sbin/vmcore-dmesg"
+	# strip heading space, match non-empty line, remove duplicated spaces between conf name and value
-FAILURE_ACTION="systemctl reboot -f"
+	[ -f "$KDUMP_CONFIG_FILE" ] && sed -n -e "s/#.*//;s/\s*$//;s/^\s*//;s/\(\S\+\)\s*\(.*\)/\1 \2/p" $KDUMP_CONFIG_FILE
-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="systemctl reboot -f"
-KDUMP_CONF="/etc/kdump.conf"
-KDUMP_PRE=""
-KDUMP_POST=""
-NEWROOT="/sysroot"
-OPALCORE="/sys/firmware/opal/mpipl/core"
 
-#initiate the kdump logger
+# Retrieves config value defined in kdump.conf
-dlog_init
+# $1: config name, sed regexp compatible
-if [ $? -ne 0 ]; then
+kdump_get_conf_val()
-    echo "failed to initiate the kdump logger."
+{
+	# For lines matching "^\s*$1\s+", remove matched part (config name including space),
+	# remove tailing comment, space, then store in hold space. Print out the hold buffer on last line.
+	[ -f "$KDUMP_CONFIG_FILE" ] &&
+		sed -n -e "/^\s*\($1\)\s\+/{s/^\s*\($1\)\s\+//;s/#.*//;s/\s*$//;h};\${x;p}" $KDUMP_CONFIG_FILE
+}
+
+is_mounted()
+{
+	findmnt -k -n "$1" > /dev/null 2>&1
+}
+
+# $1: info type
+# $2: mount source type
+# $3: mount source
+# $4: extra args
+get_mount_info()
+{
+	__kdump_mnt=$(findmnt -k -n -r -o "$1" "--$2" "$3" $4)
+
+	[ -z "$__kdump_mnt" ] && [ -e "/etc/fstab" ] && __kdump_mnt=$(findmnt -s -n -r -o "$1" "--$2" "$3" $4)
+
+	echo "$__kdump_mnt"
+}
+
+is_ipv6_address()
+{
+	echo "$1" | grep -q ":"
+}
+
+is_fs_type_nfs()
+{
+	[ "$1" = "nfs" ] || [ "$1" = "nfs4" ]
+}
+
+is_fs_type_virtiofs()
+{
+	[ "$1" = "virtiofs" ]
+}
+
+# If $1 contains dracut_args "--mount", return <filesystem type>
+get_dracut_args_fstype()
+{
+	echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f3
+}
+
+# If $1 contains dracut_args "--mount", return <device>
+get_dracut_args_target()
+{
+	echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f1
+}
+
+get_save_path()
+{
+	__kdump_path=$(kdump_get_conf_val path)
+	[ -z "$__kdump_path" ] && __kdump_path=$DEFAULT_PATH
+
+	# strip the duplicated "/"
+	echo "$__kdump_path" | tr -s /
+}
+
+get_root_fs_device()
+{
+	findmnt -k -f -n -o SOURCE /
+}
+
+# Return the current underlying device of a path, ignore bind mounts
+get_target_from_path()
+{
+	__kdump_target=$(df "$1" 2> /dev/null | tail -1 | awk '{print $1}')
+	[ "$__kdump_target" = "/dev/root" ] && [ ! -e /dev/root ] && __kdump_target=$(get_root_fs_device)
+	echo "$__kdump_target"
+}
+
+get_fs_type_from_target()
+{
+	get_mount_info FSTYPE source "$1" -f
+}
+
+get_mntpoint_from_target()
+{
+	# --source is applied to ensure non-bind mount is returned
+	local SOURCE TARGET
+	findmnt -k --pairs -o SOURCE,TARGET "$1" | while read line; do
+		eval "$line"
+		# omit sources that are bind mounts i.e. they contain a [/path/to/subpath].
+		if [[ ! "$SOURCE" =~ \[ ]]; then
+			echo $TARGET
+			break
+		fi
+	done
+
+}
+
+is_ssh_dump_target()
+{
+	kdump_get_conf_val ssh | grep -q @
+}
+
+is_raw_dump_target()
+{
+	[ -n "$(kdump_get_conf_val raw)" ]
+}
+
+is_virtiofs_dump_target()
+{
+	if [ -n "$(kdump_get_conf_val virtiofs)" ]; then
+		return 0
+	fi
+
+	if is_fs_type_virtiofs "$(get_dracut_args_fstype "$(kdump_get_conf_val dracut_args)")"; then
+		return 0
+	fi
+
+	if is_fs_type_virtiofs "$(get_fs_type_from_target "$(get_target_from_path "$(get_save_path)")")"; then
+		return 0
+	fi
+
+	return 1
+}
+
+is_nfs_dump_target()
+{
+	if [ -n "$(kdump_get_conf_val nfs)" ]; then
+		return 0
+	fi
+
+	if is_fs_type_nfs "$(get_dracut_args_fstype "$(kdump_get_conf_val dracut_args)")"; then
+		return 0
+	fi
+
+	if is_fs_type_nfs "$(get_fs_type_from_target "$(get_target_from_path "$(get_save_path)")")"; then
+		return 0
+	fi
+
+	return 1
+}
+
+is_fs_dump_target()
+{
+	[ -n "$(kdump_get_conf_val "ext[234]\|xfs\|btrfs\|minix\|virtiofs")" ]
+}
+
+is_lvm2_thinp_device()
+{
+	_device_path=$1
+	_lvm2_thin_device=$(lvm lvs -S 'lv_layout=sparse && lv_layout=thin' \
+		--nosuffix --noheadings -o vg_name,lv_name "$_device_path" 2> /dev/null)
+
+	[ -n "$_lvm2_thin_device" ]
+}
+
+kdump_get_ip_route()
+{
+	if ! _route=$(/sbin/ip -o route get to "$1" 2>&1); then
 		exit 1
-fi
+	fi
+	echo "$_route"
+}
 
-get_kdump_confs()
+kdump_get_ip_route_field()
 {
-    local config_opt config_val
+	echo "$1" | sed -n -e "s/^.*\<$2\>\s\+\(\S\+\).*$/\1/p"
-
-    while read config_opt config_val;
-    do
-        # remove inline comments after the end of a directive.
-        case "$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"
-            ;;
-            failure_action|default)
-                case $config_val in
-                    shell)
-                        FAILURE_ACTION="kdump_emergency_shell"
-                    ;;
-                    reboot)
-                        FAILURE_ACTION="systemctl reboot -f && exit"
-                    ;;
-                    halt)
-                        FAILURE_ACTION="halt && exit"
-                    ;;
-                    poweroff)
-                        FAILURE_ACTION="systemctl poweroff -f && exit"
-                    ;;
-                    dump_to_rootfs)
-                        FAILURE_ACTION="dump_to_rootfs"
-                    ;;
-                esac
-            ;;
-            final_action)
-                case $config_val in
-                    reboot)
-                        FINAL_ACTION="systemctl reboot -f"
-                    ;;
-                    halt)
-                        FINAL_ACTION="halt"
-                    ;;
-                    poweroff)
-                        FINAL_ACTION="systemctl poweroff -f"
-                    ;;
-                esac
-            ;;
-        esac
-    done <<< "$(read_strip_comments $KDUMP_CONF)"
-
-    if [ -z "$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
-}
-
-# store the kexec kernel log to a file.
-save_log()
-{
-    dmesg -T > $KDUMP_LOG_FILE
-
-    if command -v journalctl > /dev/null; then
-        journalctl -ab >> $KDUMP_LOG_FILE
-    fi
-    chmod 600 $KDUMP_LOG_FILE
-}
-
-# dump_fs <mount point>
-dump_fs()
-{
-    local _exitcode
-    local _mp=$1
-    ddebug "dump_fs _mp=$_mp"
-
-    if ! is_mounted "$_mp"; then
-        dinfo "dump path \"$_mp\" is not mounted, trying to mount..."
-        mount --target $_mp
-        if [ $? -ne 0 ]; then
-            derror "failed to dump to \"$_mp\", it's not a mount point!"
-            return 1
-        fi
-    fi
-
-    # 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"`
-
-    dinfo "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-$DATEDIR/"
-    save_opalcore_fs "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/"
-
-    dinfo "saving vmcore"
-    $CORE_COLLECTOR /proc/vmcore $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete
-    _exitcode=$?
-    if [ $_exitcode -eq 0 ]; then
-        sync -f "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete"
-        _sync_exitcode=$?
-        if [ $_sync_exitcode -eq 0 ]; then
-            mv "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete" "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore"
-            dinfo "saving vmcore complete"
-        else
-            derror "sync vmcore failed, _exitcode:$_sync_exitcode"
-            return 1
-        fi
-    else
-        derror "saving vmcore failed, _exitcode:$_exitcode"
-    fi
-
-    dinfo "saving the $KDUMP_LOG_FILE to $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/"
-    save_log
-    mv $KDUMP_LOG_FILE $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/
-    if [ $_exitcode -ne 0 ]; then
-        return 1
-    fi
-
-    # improper kernel cmdline can cause the failure of echo, we can ignore this kind of failure
-    return 0
-}
-
-save_vmcore_dmesg_fs() {
-    local _dmesg_collector=$1
-    local _path=$2
-
-    dinfo "saving vmcore-dmesg.txt to ${_path}"
-    $_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
-        chmod 600 ${_path}/vmcore-dmesg.txt
-
-        # Make sure file is on disk. There have been instances where later
-        # saving vmcore failed and system rebooted without sync and there
-        # was no vmcore-dmesg.txt available.
-        sync
-        dinfo "saving vmcore-dmesg.txt complete"
-    else
-        derror "saving vmcore-dmesg.txt failed"
-    fi
-}
-
-save_opalcore_fs() {
-    local _path=$1
-
-    if [ ! -f $OPALCORE ]; then
-        # Check if we are on an old kernel that uses a different path
-        if [ -f /sys/firmware/opal/core ]; then
-            OPALCORE="/sys/firmware/opal/core"
-        else
-            return 0
-        fi
-    fi
-
-    dinfo "saving opalcore:$OPALCORE to ${_path}/opalcore"
-    cp $OPALCORE ${_path}/opalcore
-    if [ $? -ne 0 ]; then
-        derror "saving opalcore failed"
-        return 1
-    fi
-
-    sync
-    dinfo "saving opalcore complete"
-    return 0
-}
-
-dump_to_rootfs()
-{
-
-    dinfo "Trying to bring up rootfs device"
-    systemctl start dracut-initqueue
-    dinfo "Waiting for rootfs mount, will timeout after 90 seconds"
-    systemctl start sysroot.mount
-
-    ddebug "NEWROOT=$NEWROOT"
-
-    dump_fs $NEWROOT
-}
-
-kdump_emergency_shell()
-{
-    echo "PS1=\"kdump:\\\${PWD}# \"" >/etc/profile
-    ddebug "Switching to dracut emergency..."
-    /bin/dracut-emergency
-    rm -f /etc/profile
-}
-
-do_failure_action()
-{
-    dinfo "Executing failure action $FAILURE_ACTION"
-    eval $FAILURE_ACTION
-}
-
-do_final_action()
-{
-    dinfo "Executing final action $FINAL_ACTION"
-    eval $FINAL_ACTION
 }

SOURCES/kdump-logger.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 # This comes from the dracut-logger.sh
 #
@@ -34,6 +34,8 @@
 # First of all you have to start with dlog_init() function which initializes
 # required variables. Don't call any other logging function before that one!
 #
+# The code in this file might be run in an environment without bash.
+# Any code added must be POSIX compliant.
 
 # Define vairables for the log levels in this module.
 kdump_stdloglvl=""
@@ -53,11 +55,12 @@ fi
 #
 get_kdump_loglvl()
 {
-    (type -p getarg) && kdump_sysloglvl=$(getarg rd.kdumploglvl)
+    [ -f /lib/dracut-lib.sh ] && kdump_sysloglvl=$(getarg rd.kdumploglvl)
     [ -z "$kdump_sysloglvl" ] && return 1;
 
-    (type -p isdigit) && isdigit $kdump_sysloglvl
+    if [ -f /lib/dracut-lib.sh ] && ! isdigit "$kdump_sysloglvl"; then
-    [ $? -ne 0 ] && return 1;
+        return 1
+    fi
 
     return 0
 }
@@ -83,11 +86,10 @@ check_loglvl()
 # @retval 0 on success.
 #
 dlog_init() {
-    local ret=0; local errmsg
+    ret=0
 
     if [ -s /proc/vmcore ];then
-        get_kdump_loglvl
+        if ! get_kdump_loglvl; then
-        if [ $? -ne 0 ];then
             logger -t "kdump[$$]" -p warn -- "Kdump is using the default log level(3)."
             kdump_sysloglvl=3
         fi
@@ -104,8 +106,7 @@ dlog_init() {
     [ -z "$kdump_kmsgloglvl" ] && kdump_kmsgloglvl=0
 
     for loglvl in "$kdump_stdloglvl" "$kdump_kmsgloglvl" "$kdump_sysloglvl"; do
-        check_loglvl "$loglvl"
+        if ! check_loglvl "$loglvl"; then
-        if [ $? -ne 0 ]; then
             echo "Illegal log level: $kdump_stdloglvl $kdump_kmsgloglvl $kdump_sysloglvl"
             return 1
         fi
@@ -114,21 +115,21 @@ dlog_init() {
     # Skip initialization if it's already done.
     [ -n "$kdump_maxloglvl" ] && return 0
 
-    if [[ $UID -ne 0 ]]; then
+    if [ "$UID" -ne 0 ]; then
         kdump_kmsgloglvl=0
         kdump_sysloglvl=0
     fi
 
-    if [[ $kdump_sysloglvl -gt 0 ]]; then
+    if [ "$kdump_sysloglvl" -gt 0 ]; then
-        if [[ -d /run/systemd/journal ]] \
+        if [ -d /run/systemd/journal ] \
-            && type -P systemd-cat &>/dev/null \
+            && systemd-cat --version 1>/dev/null 2>&1 \
-            && systemctl --quiet is-active systemd-journald.socket &>/dev/null; then
+            && systemctl --quiet is-active systemd-journald.socket 1>/dev/null 2>&1; then
             readonly _systemdcatfile="/var/tmp/systemd-cat"
-            mkfifo "$_systemdcatfile" &>/dev/null
+            mkfifo "$_systemdcatfile" 1>/dev/null 2>&1
             readonly _dlogfd=15
             systemd-cat -t 'kdump' --level-prefix=true <"$_systemdcatfile" &
             exec 15>"$_systemdcatfile"
-        elif ! [ -S /dev/log -a -w /dev/log ] || ! command -v logger >/dev/null; then
+        elif ! [ -S /dev/log ] && [ -w /dev/log ] || ! command -v logger >/dev/null; then
             # We cannot log to syslog, so turn this facility off.
             kdump_kmsgloglvl=$kdump_sysloglvl
             kdump_sysloglvl=0
@@ -137,31 +138,31 @@ dlog_init() {
         fi
     fi
 
-    local lvl; local maxloglvl_l=0
+    kdump_maxloglvl=0
-    for lvl in $kdump_stdloglvl $kdump_sysloglvl $kdump_kmsgloglvl; do
+    for _dlog_lvl in $kdump_stdloglvl $kdump_sysloglvl $kdump_kmsgloglvl; do
-        [[ $lvl -gt $maxloglvl_l ]] && maxloglvl_l=$lvl
+        [ $_dlog_lvl -gt $kdump_maxloglvl ] && kdump_maxloglvl=$_dlog_lvl
     done
-    readonly kdump_maxloglvl=$maxloglvl_l
+    readonly kdump_maxloglvl
     export kdump_maxloglvl
 
-    if [[ $kdump_stdloglvl -lt 4 ]] && [[ $kdump_kmsgloglvl -lt 4 ]] && [[ $kdump_sysloglvl -lt 4 ]]; then
+    if [ $kdump_stdloglvl -lt 4 ] && [ $kdump_kmsgloglvl -lt 4 ] && [ $kdump_sysloglvl -lt 4 ]; then
         unset ddebug
         ddebug() { :; };
     fi
 
-    if [[ $kdump_stdloglvl -lt 3 ]] && [[ $kdump_kmsgloglvl -lt 3 ]] && [[ $kdump_sysloglvl -lt 3 ]]; then
+    if [ $kdump_stdloglvl -lt 3 ] && [ $kdump_kmsgloglvl -lt 3 ] && [ $kdump_sysloglvl -lt 3 ]; then
         unset dinfo
         dinfo() { :; };
     fi
 
-    if [[ $kdump_stdloglvl -lt 2 ]] && [[ $kdump_kmsgloglvl -lt 2 ]] && [[ $kdump_sysloglvl -lt 2 ]]; then
+    if [ $kdump_stdloglvl -lt 2 ] && [ $kdump_kmsgloglvl -lt 2 ] && [ $kdump_sysloglvl -lt 2 ]; then
         unset dwarn
         dwarn() { :; };
         unset dwarning
         dwarning() { :; };
     fi
 
-    if [[ $kdump_stdloglvl -lt 1 ]] && [[ $kdump_kmsgloglvl -lt 1 ]] && [[ $kdump_sysloglvl -lt 1 ]]; then
+    if [ $kdump_stdloglvl -lt 1 ] && [ $kdump_kmsgloglvl -lt 1 ] && [ $kdump_sysloglvl -lt 1 ]; then
         unset derror
         derror() { :; };
     fi
@@ -173,7 +174,7 @@ dlog_init() {
 
 ## @brief Converts numeric level to logger priority defined by POSIX.2.
 #
-# @param lvl Numeric logging level in range from 1 to 4.
+# @param $1: Numeric logging level in range from 1 to 4.
 # @retval 1 if @a lvl is out of range.
 # @retval 0 if @a lvl is correct.
 # @result Echoes logger priority.
@@ -189,7 +190,7 @@ _lvl2syspri() {
 
 ## @brief Converts logger numeric level to syslog log level
 #
-# @param lvl Numeric logging level in range from 1 to 4.
+# @param $1: Numeric logging level in range from 1 to 4.
 # @retval 1 if @a lvl is out of range.
 # @retval 0 if @a lvl is correct.
 # @result Echoes kernel console numeric log level
@@ -209,27 +210,25 @@ _lvl2syspri() {
 #
 # @see /usr/include/sys/syslog.h
 _dlvl2syslvl() {
-    local lvl
-
     case "$1" in
-        1) lvl=3;;
+        1) set -- 3;;
-        2) lvl=4;;
+        2) set -- 4;;
-        3) lvl=6;;
+        3) set -- 6;;
-        4) lvl=7;;
+        4) set -- 7;;
         *) return 1;;
     esac
 
     # The number is constructed by multiplying the facility by 8 and then
     # adding the level.
     # About The Syslog Protocol, please refer to the RFC5424 for more details.
-    echo $((24+$lvl))
+    echo $((24 + $1))
 }
 
 ## @brief Prints to stderr, to syslog and/or /dev/kmsg given message with
 #  given level (priority).
 #
-# @param lvl Numeric logging level.
+# @param $1: Numeric logging level.
-# @param msg Message.
+# @param $2: Message.
 # @retval 0 It's always returned, even if logging failed.
 #
 # @note This function is not supposed to be called manually. Please use
@@ -251,27 +250,24 @@ _dlvl2syslvl() {
 #   - @c INFO to @c info
 #   - @c DEBUG to @c debug
 _do_dlog() {
-    local lvl="$1"; shift
+    [ "$1" -le $kdump_stdloglvl ] && printf -- 'kdump: %s\n' "$2" >&2
-    local msg="$*"
 
-    [[ $lvl -le $kdump_stdloglvl ]] && printf -- 'kdump: %s\n' "$msg" >&2
+    if [ "$1" -le $kdump_sysloglvl ]; then
-
+        if [ "$_dlogfd" ]; then
-    if [[ $lvl -le $kdump_sysloglvl ]]; then
+            printf -- "<%s>%s\n" "$(($(_dlvl2syslvl "$1") & 7))" "$2" 1>&$_dlogfd
-        if [[ "$_dlogfd" ]]; then
-            printf -- "<%s>%s\n" "$(($(_dlvl2syslvl $lvl) & 7))" "$msg" >&$_dlogfd
         else
-            logger -t "kdump[$$]" -p $(_lvl2syspri $lvl) -- "$msg"
+            logger -t "kdump[$$]" -p "$(_lvl2syspri "$1")" -- "$2"
         fi
     fi
 
-    [[ $lvl -le $kdump_kmsgloglvl ]] && \
+    [ "$1" -le $kdump_kmsgloglvl ] && \
-        echo "<$(_dlvl2syslvl $lvl)>kdump[$$] $msg" >/dev/kmsg
+        echo "<$(_dlvl2syslvl "$1")>kdump[$$] $2" >/dev/kmsg
 }
 
 ## @brief Internal helper function for _do_dlog()
 #
-# @param lvl Numeric logging level.
+# @param $1: Numeric logging level.
-# @param msg Message.
+# @param $2 [...]: Message.
 # @retval 0 It's always returned, even if logging failed.
 #
 # @note This function is not supposed to be called manually. Please use
@@ -286,12 +282,13 @@ _do_dlog() {
 # echo "This is a warning" | dwarn
 dlog() {
     [ -z "$kdump_maxloglvl" ] && return 0
-    [[ $1 -le $kdump_maxloglvl ]] || return 0
+    [ "$1" -le "$kdump_maxloglvl" ] || return 0
 
-    if [[ $# -gt 1 ]]; then
+    if [ $# -gt 1 ]; then
-        _do_dlog "$@"
+        _dlog_lvl=$1; shift
+        _do_dlog "$_dlog_lvl" "$*"
     else
-        while read line || [ -n "$line" ]; do
+        while read -r line || [ -n "$line" ]; do
             _do_dlog "$1" "$line"
         done
     fi
@@ -304,7 +301,9 @@ dlog() {
 ddebug() {
     set +x
     dlog 4 "$@"
-    [ -n "$debug" ] && set -x || :
+    if [ -n "$debug" ]; then
+        set -x
+    fi
 }
 
 ## @brief Logs message at INFO level (3)
@@ -314,7 +313,9 @@ ddebug() {
 dinfo() {
     set +x
     dlog 3 "$@"
-    [ -n "$debug" ] && set -x || :
+    if [ -n "$debug" ]; then
+        set -x
+    fi
 }
 
 ## @brief Logs message at WARN level (2)
@@ -324,7 +325,9 @@ dinfo() {
 dwarn() {
     set +x
     dlog 2 "$@"
-    [ -n "$debug" ] && set -x || :
+    if [ -n "$debug" ]; then
+        set -x
+    fi
 }
 
 ## @brief It's an alias to dwarn() function.
@@ -334,7 +337,9 @@ dwarn() {
 dwarning() {
     set +x
     dwarn "$@"
-    [ -n "$debug" ] && set -x || :
+    if [ -n "$debug" ]; then
+        set -x
+    fi
 }
 
 ## @brief Logs message at ERROR level (1)
@@ -344,5 +349,7 @@ dwarning() {
 derror() {
     set +x
     dlog 1 "$@"
-    [ -n "$debug" ] && set -x || :
+    if [ -n "$debug" ]; then
+        set -x
+    fi
 }

SOURCES/kdump.conf.5

@@ -26,6 +26,24 @@ understand how this configuration file affects the behavior of kdump.
 
 .SH OPTIONS
 
+.B auto_reset_crashkernel <yes|no>
+.RS
+determine whether to reset kernel crashkernel parameter to the default value
+or not when kexec-tools is updated or a new kernel is installed. The default
+crashkernel values are different for different architectures and also take the
+following factors into consideration,
+	- AMD Secure Memory Encryption (SME) and Secure Encrypted Virtualization (SEV)
+	- Mellanox 5th generation network driver
+	- aarch64 64k kernel
+	- Firmware-assisted dump (FADump)
+
+Since the kernel crasherkernel parameter will be only reset when kexec-tools is
+updated or a new kernel is installed, you need to call "kdumpctl
+reset-crashkernel [--kernel=path_to_kernel]" if you want to use the default
+value set after having enabled features like SME/SEV for a specific kernel. And
+you should also reboot the system for the new crashkernel value to take effect.
+Also see kdumpctl(8).
+
 .B raw <partition>
 .RS
 Will dd /proc/vmcore into <partition>.  Use persistent device names for
@@ -41,7 +59,7 @@ mount point.
 
 .B ssh <user@server>
 .RS
-Will scp /proc/vmcore to <user@server>:<path>/%HOST-%DATE/,
+Will save /proc/vmcore through ssh pipe to <user@server>:<path>/%HOST-%DATE/,
 supports DNS. NOTE: make sure user has necessary write permissions on
 server and that a fqdn is used as the server name.
 .RE
@@ -55,7 +73,7 @@ The default value is /root/.ssh/kdump_id_rsa.
 .B <fs type> <partition>
 .RS
 Will mount -t <fs type> <partition> <mnt>, and copy /proc/vmcore to
-<mnt>/<path>/%DATE/.  NOTE: <partition> can be a device node, label
+<mnt>/<path>/%HOST_IP-%DATE/.  NOTE: <partition> can be a device node, label
 or uuid.  It's recommended to use persistent device names such as
 /dev/vg/<devname>.  Otherwise it's suggested to use label or uuid.
 .RE
@@ -121,7 +139,7 @@ specified kdump_post parameter is executed.
 Note that scripts written for use with this directive must use the /bin/bash
 interpreter. And since these scripts run in kdump enviroment, the reference to
 the storage or network device in the scripts should adhere to the section
-\'Supported dump target types and requirements\' in kexec-kdump-howto.txt.
+'Supported dump target types and requirements' in kexec-kdump-howto.txt.
 
 .RE
 
@@ -145,7 +163,7 @@ returns non 0 exit status, the processing is continued.
 Note that scripts written for use with this directive must use the /bin/bash
 interpreter. And since these scripts run in kdump enviroment, the reference to
 the storage or network device in the scripts should adhere to the section
-\'Supported dump target types and requirements\' in kexec-kdump-howto.txt.
+'Supported dump target types and requirements' in kexec-kdump-howto.txt.
 
 .RE
 
@@ -296,7 +314,7 @@ retaining blacklist option creates more confusing behavior. It has been
 deprecated.
 .PP
 Instead, use rd.driver.blacklist option on second kernel to blacklist
-a certain module. One can edit /etc/sysconfig/kdump and edit
+a certain module. One can edit /etc/sysconfig/kdump.conf and edit
 KDUMP_COMMANDLINE_APPEND to pass kernel command line options. Refer
 to dracut.cmdline man page for more details on module blacklist option.
 .RE

SOURCES/kdump.service

@@ -11,6 +11,7 @@ ExecStop=/usr/bin/kdumpctl stop
 ExecReload=/usr/bin/kdumpctl reload
 RemainAfterExit=yes
 StartLimitInterval=0
+PrivateTmp=yes
 
 [Install]
 WantedBy=multi-user.target

SOURCES/kdump.sysconfig

@@ -17,11 +17,11 @@ KDUMP_COMMANDLINE=""
 # This variable lets us remove arguments from the current kdump commandline
 # as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
 # NOTE: some arguments such as crashkernel will always be removed
-KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len ignition.firstboot"
+KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb cma hugetlb_cma ignition.firstboot"
 
 # This variable lets us append arguments to the current kdump commandline
 # after processed by KDUMP_COMMANDLINE_REMOVE
-KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices novmcoredd"
+KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices novmcoredd cma=0 hugetlb_cma=0"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty

SOURCES/kdump.sysconfig.aarch64

@@ -17,11 +17,11 @@ KDUMP_COMMANDLINE=""
 # This variable lets us remove arguments from the current kdump commandline
 # as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
 # NOTE: some arguments such as crashkernel will always be removed
-KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb ignition.firstboot"
+KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb cma hugetlb_cma ignition.firstboot"
 
 # This variable lets us append arguments to the current kdump commandline
 # after processed by KDUMP_COMMANDLINE_REMOVE
-KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory udev.children-max=2 panic=10 swiotlb=noforce novmcoredd"
+KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory udev.children-max=2 panic=10 swiotlb=noforce novmcoredd cma=0 hugetlb_cma=0"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty

SOURCES/kdump.sysconfig.i386

@@ -17,11 +17,11 @@ KDUMP_COMMANDLINE=""
 # This variable lets us remove arguments from the current kdump commandline
 # as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
 # NOTE: some arguments such as crashkernel will always be removed
-KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb ignition.firstboot"
+KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb cma hugetlb_cma ignition.firstboot"
 
 # This variable lets us append arguments to the current kdump commandline
 # after processed by KDUMP_COMMANDLINE_REMOVE
-KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never novmcoredd"
+KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off udev.children-max=2 panic=10 transparent_hugepage=never novmcoredd cma=0 hugetlb_cma=0"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty

SOURCES/kdump.sysconfig.ppc64

@@ -17,11 +17,11 @@ KDUMP_COMMANDLINE=""
 # This variable lets us remove arguments from the current kdump commandline
 # as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
 # NOTE: some arguments such as crashkernel will always be removed
-KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb ignition.firstboot"
+KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb hugetlb_cma ignition.firstboot"
 
 # This variable lets us append arguments to the current kdump commandline
 # after processed by KDUMP_COMMANDLINE_REMOVE
-KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd"
+KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty

SOURCES/kdump.sysconfig.ppc64le

@@ -17,18 +17,18 @@ KDUMP_COMMANDLINE=""
 # This variable lets us remove arguments from the current kdump commandline
 # as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
 # NOTE: some arguments such as crashkernel will always be removed
-KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb ignition.firstboot"
+KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb hugetlb_cma ignition.firstboot"
 
 # This variable lets us append arguments to the current kdump commandline
 # after processed by KDUMP_COMMANDLINE_REMOVE
-KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 rootflags=nofail kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd"
+KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty
 #
 # Example:
 #   KEXEC_ARGS="--elf32-core-headers"
-KEXEC_ARGS="--dt-no-old-root"
+KEXEC_ARGS="--dt-no-old-root -s"
 
 #Where to find the boot image
 #KDUMP_BOOTDIR="/boot"

SOURCES/kdump.sysconfig.s390x

@@ -17,11 +17,11 @@ KDUMP_COMMANDLINE=""
 # This variable lets us remove arguments from the current kdump commandline
 # as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
 # NOTE: some arguments such as crashkernel will always be removed
-KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb prot_virt ignition.firstboot zfcp.allow_lun_scan"
+KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb vmcp_cma cma hugetlb_cma prot_virt ignition.firstboot zfcp.allow_lun_scan"
 
 # This variable lets us append arguments to the current kdump commandline
 # after processed by KDUMP_COMMANDLINE_REMOVE
-KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never novmcoredd"
+KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 transparent_hugepage=never novmcoredd vmcp_cma=0 cma=0 hugetlb_cma=0"
 
 # Any additional /sbin/mkdumprd arguments required.
 MKDUMPRD_ARGS=""

SOURCES/kdump.sysconfig.x86_64

@@ -17,11 +17,11 @@ KDUMP_COMMANDLINE=""
 # This variable lets us remove arguments from the current kdump commandline
 # as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
 # NOTE: some arguments such as crashkernel will always be removed
-KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb ignition.firstboot"
+KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb cma hugetlb_cma ignition.firstboot"
 
 # This variable lets us append arguments to the current kdump commandline
 # after processed by KDUMP_COMMANDLINE_REMOVE
-KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug transparent_hugepage=never nokaslr novmcoredd hest_disable"
+KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 acpi_no_memhotplug transparent_hugepage=never nokaslr hest_disable novmcoredd cma=0 hugetlb_cma=0"
 
 # Any additional kexec arguments required.  In most situations, this should
 # be left empty

SOURCES/kdumpctl.8

@@ -14,7 +14,7 @@ In most cases, you should use
 .B systemctl
 to start / stop / enable kdump service instead. However,
 .B kdumpctl
-provides more details for debug and a helper to setup ssh key authentication.
+provides more details for debugging and a helper to set up ssh key authentication.
 
 .SH COMMANDS
 .TP
@@ -26,14 +26,14 @@ Stop the service.
 .TP
 .I status
 Prints the current status of kdump service.
-It returns non-zero value if kdump is not operational.
+It returns a non-zero value if kdump is not operational.
 .TP
 .I restart
 Is equal to
 .I start; stop
 .TP
 .I reload
-reload crash kernel image and initramfs without triggering a rebuild.
+reload the crash kernel image and initramfs without triggering a rebuild.
 .TP
 .I rebuild
 rebuild the crash kernel initramfs.
@@ -43,12 +43,29 @@ Helps to setup key authentication for ssh storage since it's
 impossible to use password authentication during kdump.
 .TP
 .I showmem
-Prints the size of reserved memory for crash kernel in megabytes.
+Prints the size of reserved memory for the crash kernel in megabytes.
 .TP
 .I estimate
-Estimate a suitable crashkernel value for current machine. This is a
+Estimate a suitable crashkernel value for the current machine. This is a
-best-effort estimate. It will print a recommanded crashkernel value
+best-effort estimate. It will print a recommended crashkernel value
-based on current kdump setup, and list some details of memory usage.
+based on the current kdump setup, and list some details of memory usage.
+.TP
+.I get-default-crashkernel
+Return the default crashkernel value provided by kexec-tools.
+.TP
+.I reset-crashkernel [--kernel=path_to_kernel] [--reboot]
+Reset crashkernel to default value recommended by kexec-tools. If no kernel
+is specified, will reset KDUMP_KERNELVER if it's defined in /etc/sysconfig/kdump
+or the current running kernel's crashkernel value if KDUMP_KERNELVER is empty. You can
+also specify --kernel=ALL and --kernel=DEFAULT which have the same meaning as
+grubby's kernel-path=ALL and kernel-path=DEFAULT. ppc64le supports FADump and
+supports an additional [--fadump=[on|off|nocma]] parameter to toggle FADump
+on/off.
+
+Note: The memory requirements for kdump varies heavily depending on the
+used hardware and system configuration. Thus the recommended
+crashkernel might not work for your specific setup. Please test if
+kdump works after resetting the crashkernel value.
 
 .SH "SEE ALSO"
 .BR kdump.conf (5),

SOURCES/kexec-kdump-howto.txt

@@ -44,7 +44,7 @@ ia64 and ppc64.
 If you're reading this document, you should already have kexec-tools
 installed. If not, you install it via the following command:
 
-    # yum install kexec-tools
+    # dnf install kexec-tools
 
 Now load a kernel with kexec:
 
@@ -66,23 +66,31 @@ How to configure kdump
 Again, we assume if you're reading this document, you should already have
 kexec-tools installed. If not, you install it via the following command:
 
-    # yum install kexec-tools
+    # dnf install kexec-tools
 
 To be able to do much of anything interesting in the way of debug analysis,
 you'll also need to install the kernel-debuginfo package, of the same arch
 as your running kernel, and the crash utility:
 
-    # yum --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
+    # dnf --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
 
-Next up, we need to modify some boot parameters to reserve a chunk of memory for
+Next up, we need to reserve a chunk of memory for the capture kernel. To use
-the capture kernel. With the help of grubby, it's very easy to append
+the default crashkernel value, you can kdumpctl:
-"crashkernel=128M" to the end of your kernel boot parameters. Note that the X
-values are such that X = the amount of memory to reserve for the capture kernel.
-And based on arch and system configuration, one might require more than 128M to
-be reserved for kdump. One need to experiment and test kdump, if 128M is not
-sufficient, try reserving more memory.
 
-   # grubby --args="crashkernel=128M" --update-kernel=/boot/vmlinuz-`uname -r`
+    # kdumpctl reset-crashkernel --kernel=/boot/vmlinuz-`uname -r`
+
+If the default value does not work for your setup you can use
+
+  # grubby --args="crashkernel=256M" --update-kernel=/boot/vmlinuz-`uname -r`
+
+to specify a larger value, in this case 256M. You need to experiment to
+find the best value that works for your setup. To begin with
+
+  # kdumpctl estimate
+
+gives you an estimation for the crashkernel value based on the currently
+running kernel. For more details, please refer to the "Estimate crashkernel"
+section in /usr/share/doc/kexec-tools/crashkernel-howto.txt.
 
 Note that there is an alternative form in which to specify a crashkernel
 memory reservation, in the event that more control is needed over the size and
@@ -135,7 +143,7 @@ in /var/crash/<YYYY-MM-DD-HH:MM>/vmcore), then the system rebooted back into
 your normal kernel.
 
 Once back to your normal kernel, you can use the previously installed crash
-kernel in conjunction with the previously installed kernel-debuginfo to
+utility in conjunction with the previously installed kernel-debuginfo to
 perform postmortem analysis:
 
     # crash /usr/lib/debug/lib/modules/2.6.17-1.2621.el5/vmlinux
@@ -187,7 +195,7 @@ on your system, with the scripts enabled as described in the section above.
 Kdump can be triggered with the combination of the 'Alt','SysRq' and 'C'
 keyboard keys. Please refer to the following link for more details:
 
-https://access.redhat.com/solutions/2023
+http://kbase.redhat.com/faq/FAQ_43_5559.shtm
 
 In addition, on PowerPC boxes, Kdump can also be triggered via Hardware
 Management Console(HMC) using 'Ctrl', 'O' and 'C' keyboard keys.
@@ -199,7 +207,7 @@ respond to keyboard interrupts. As a result 'Alt-SysRq' keys will not help
 trigger a dump. In such scenarios Nmi Watchdog feature can prove to be useful.
 The following link has more details on configuring Nmi watchdog option.
 
-https://access.redhat.com/solutions/125103
+http://kbase.redhat.com/faq/FAQ_85_9129.shtm
 
 Once this feature has been enabled in the kernel, any lockups will result in an
 OOPs message to be generated, followed by Kdump being triggered.

SOURCES/kexec-tools-2.0.26-makedumpfile-sadump-fix-failure-of-reading-memory-when-5-le.patch

@@ -1,72 +0,0 @@
-From 58553ad03187f0cf208d6c4a0dc026c6338e5edd Mon Sep 17 00:00:00 2001
-From: "Daisuke Hatayama (Fujitsu)" <d.hatayama@fujitsu.com>
-Date: Wed, 29 Mar 2023 12:44:10 +0000
-Subject: [PATCH] [PATCH] sadump: fix failure of reading memory when 5-level
- paging is enabled
-
-makedumpfile fails as follows for memory dumps collected by sadump
-when 5-level paging is enabled on the corresponding systems:
-
-    # makedumpfile -l -d 31 -x ./vmlinux ./dump.sadump dump.sadump-ld31
-    __vtop4_x86_64: Can't get a valid pgd.
-    ...snip...
-    __vtop4_x86_64: Can't get a valid pgd.
-    calc_kaslr_offset: failed to calculate kaslr_offset and phys_base; default to 0
-    __vtop4_x86_64: Can't get a valid pgd.
-    readmem: Can't convert a virtual address(ffffffff82fce960) to physical address.
-    readmem: type_addr: 0, addr:ffffffff82fce960, size:1024
-    cpu_online_mask_init: Can't read cpu_online_mask memory.
-
-    makedumpfile Failed.
-
-This is because 5-level paging support has not been done yet for
-sadump; the work of the 5-level paging support was done by the commit
-30a3214a7193e94c551c0cebda5918a72a35c589 (PATCH 4/4 arch/x86_64: Add
-5-level paging support) but that was focused on the core part only.
-
-Having said that, most of things has already been finished in the
-commit. What needs to be newly added for sadump is just how to check
-if 5-level paging is enabled for a given memory dump.
-
-For that purpose, let's refer to CR4.LA57, bit 12 of CR4, representing
-whether 5-level paging is enabled or not. We can do this because
-memory dumps collected by sadump have SMRAM as note information and
-they include CR4 together with the other control registers.
-
-Signed-off-by: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
----
- sadump_info.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/makedumpfile-1.7.2/sadump_info.c b/makedumpfile-1.7.2/sadump_info.c
-index adfa8dc..2c44068 100644
---- a/makedumpfile-1.7.2/sadump_info.c
-+++ b/makedumpfile-1.7.2/sadump_info.c
-@@ -1362,6 +1362,7 @@ static int linux_banner_sanity_check(ulong cr3)
- #define PTI_USER_PGTABLE_BIT		(info->page_shift)
- #define PTI_USER_PGTABLE_MASK		(1 << PTI_USER_PGTABLE_BIT)
- #define CR3_PCID_MASK			0xFFFull
-+#define CR4_LA57			(1 << 12)
- int
- calc_kaslr_offset(void)
- {
-@@ -1397,6 +1398,8 @@ calc_kaslr_offset(void)
- 		else
- 			cr3 = smram.Cr3 & ~CR3_PCID_MASK;
- 
-+		NUMBER(pgtable_l5_enabled) = !!(smram.Cr4 & CR4_LA57);
-+
- 		/* Convert virtual address of IDT table to physical address */
- 		idtr_paddr = vtop4_x86_64_pagetable(idtr, cr3);
- 		if (idtr_paddr == NOT_PADDR) {
-@@ -1417,6 +1420,7 @@ calc_kaslr_offset(void)
- 
- 		DEBUG_MSG("sadump: idtr=%" PRIx64 "\n", idtr);
- 		DEBUG_MSG("sadump: cr3=%" PRIx64 "\n", cr3);
-+		DEBUG_MSG("sadump: cr4=%" PRIx32 "\n", smram.Cr4);
- 		DEBUG_MSG("sadump: idtr(phys)=%" PRIx64 "\n", idtr_paddr);
- 		DEBUG_MSG("sadump: devide_error(vmlinux)=%lx\n",
- 			  divide_error_vmlinux);
--- 
-2.31.1
-

SOURCES/kexec-update-manpage-with-explicit-mention-of-clean-.patch

@@ -0,0 +1,39 @@
+From bd0200c47c45dd420244b39ddabcecdab1fb9a8e Mon Sep 17 00:00:00 2001
+From: Hari Bathini <hbathini@linux.ibm.com>
+Date: Wed, 20 Sep 2023 17:29:27 +0530
+Subject: [PATCH] kexec: update manpage with explicit mention of clean kexec
+
+While the manpage does mention about kexec boot with a clean shutdown,
+it is not explicit about it. Make it explicit.
+
+Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
+Signed-off-by: Simon Horman <horms@kernel.org>
+---
+ kexec/kexec.8 | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/kexec/kexec.8 b/kexec/kexec.8
+index 3a344c5..179dcf2 100644
+--- a/kexec/kexec.8
++++ b/kexec/kexec.8
+@@ -95,8 +95,15 @@ then you would use the following command to load the kernel:
+ .RB "\-\-append=" "root=/dev/hda1" "\ \-\-initrd=" /boot/initrd
+ .RE
+ .PP
+-After this kernel is loaded, it can be booted to at any time using the
+-command:
++After this kernel is loaded, assuming the user-space supports kexec-based
++rebooting, it can be booted to, with a clean shutdown, using the command:
++
++.RS
++.BR reboot
++.RE
++.PP
++Alternatively, it can also be booted to, without calling shutdown(8), with
++the command:
+
+ .RS
+ .BR kexec \ \-e
+--
+2.41.0
+

SOURCES/mkdumprd

@@ -6,7 +6,7 @@
 # Written by Cong Wang <amwang@redhat.com>
 #
 
-if [ -f /etc/sysconfig/kdump ]; then
+if [[ -f /etc/sysconfig/kdump ]]; then
 	. /etc/sysconfig/kdump
 fi
 
@@ -17,23 +17,21 @@ fi
 export IN_KDUMP=1
 
 #initiate the kdump logger
-dlog_init
+if ! dlog_init; then
-if [ $? -ne 0 ]; then
 	echo "failed to initiate the kdump logger."
 	exit 1
 fi
 
-conf_file="/etc/kdump.conf"
 SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
 SAVE_PATH=$(get_save_path)
 OVERRIDE_RESETTABLE=0
 
 extra_modules=""
-dracut_args="--add kdumpbase --quiet --hostonly --hostonly-cmdline --hostonly-i18n --hostonly-mode strict --hostonly-nics '' -o \"plymouth dash resume ifcfg earlykdump\" --compress=xz"
+dracut_args=(--add kdumpbase --quiet --hostonly --hostonly-cmdline --hostonly-i18n --hostonly-mode strict --hostonly-nics '' -o "plymouth resume ifcfg earlykdump")
 
-readonly MKDUMPRD_TMPDIR="$(mktemp -d -t mkdumprd.XXXXXX)"
+MKDUMPRD_TMPDIR="$(mktemp -d -t mkdumprd.XXXXXX)"
 [ -d "$MKDUMPRD_TMPDIR" ] || perror_exit "dracut: mktemp -p -d -t dracut.XXXXXX failed."
-readonly MKDUMPRD_TMPMNT="$MKDUMPRD_TMPDIR/target"
+MKDUMPRD_TMPMNT="$MKDUMPRD_TMPDIR/target"
 
 trap '
     ret=$?;
@@ -45,48 +43,54 @@ trap '
 # clean up after ourselves no matter how we die.
 trap 'exit 1;' SIGINT
 
-add_dracut_arg() {
+add_dracut_arg()
-    dracut_args="$dracut_args $@"
+{
+	dracut_args+=("$@")
 }
 
-add_dracut_mount() {
+add_dracut_mount()
-    add_dracut_arg "--mount" "\"$1\""
+{
+	add_dracut_arg "--mount" "$1"
 }
 
-add_dracut_sshkey() {
+add_dracut_sshkey()
-    add_dracut_arg "--sshkey" "\"$1\""
+{
+	add_dracut_arg "--sshkey" "$1"
 }
 
 # caller should ensure $1 is valid and mounted in 1st kernel
-to_mount() {
+to_mount()
-    local _target=$1 _fstype=$2 _options=$3 _new_mntpoint _pdev
+{
+	local _target=$1 _fstype=$2 _options=$3 _sed_cmd _new_mntpoint _pdev
 
-    _new_mntpoint=$(get_kdump_mntpoint_from_target $_target)
+	_new_mntpoint=$(get_kdump_mntpoint_from_target "$_target")
-    _fstype="${_fstype:-$(get_fs_type_from_target $_target)}"
+	_fstype="${_fstype:-$(get_fs_type_from_target "$_target")}"
-    _options="${_options:-$(get_mntopt_from_target $_target)}"
+	_options="${_options:-$(get_mntopt_from_target "$_target")}"
 	_options="${_options:-defaults}"
 
-    if [[ "$_fstype" == "nfs"* ]]; then
+	if [[ $_fstype == "nfs"* ]]; then
 		_pdev=$_target
-        _options=$(echo $_options | sed 's/,\(mount\)\?addr=[^,]*//g')
+		_sed_cmd+='s/,\(mount\)\?addr=[^,]*//g;'
-        _options=$(echo $_options | sed 's/,\(mount\)\?proto=[^,]*//g')
+		_sed_cmd+='s/,\(mount\)\?proto=[^,]*//g;'
-        _options=$(echo $_options | sed 's/,clientaddr=[^,]*//')
+		_sed_cmd+='s/,clientaddr=[^,]*//;'
 	else
 		# for non-nfs _target converting to use udev persistent name
-        _pdev="$(kdump_get_persistent_dev $_target)"
+		_pdev="$(kdump_get_persistent_dev "$_target")"
-        if [ -z "$_pdev" ]; then
+		if [[ -z $_pdev ]]; then
 			return 1
 		fi
 	fi
 
-    #mount fs target as rw in 2nd kernel
+	# mount fs target as rw in 2nd kernel
-    _options=$(echo $_options | sed 's/\(^\|,\)ro\($\|,\)/\1rw\2/g')
+	_sed_cmd+='s/\(^\|,\)ro\($\|,\)/\1rw\2/g;'
 	# with 'noauto' in fstab nfs and non-root disk mount will fail in 2nd
 	# kernel, filter it out here.
-    _options=$(echo $_options | sed 's/\(^\|,\)noauto\($\|,\)/\1/g')
+	_sed_cmd+='s/\(^\|,\)noauto\($\|,\)/\1/g;'
-    # use both nofail and x-systemd.before to ensure systemd will try best to
+	# drop nofail or nobootwait
-    # mount it before kdump starts, this is an attempt to improve robustness
+	_sed_cmd+='s/\(^\|,\)nofail\($\|,\)/\1/g;'
-    _options="$_options,nofail,x-systemd.before=initrd-fs.target"
+	_sed_cmd+='s/\(^\|,\)nobootwait\($\|,\)/\1/g;'
+
+	_options=$(echo "$_options" | sed "$_sed_cmd")
 
 	echo "$_pdev $_new_mntpoint $_fstype $_options"
 }
@@ -94,17 +98,16 @@ to_mount() {
 #Function: get_ssh_size
 #$1=dump target
 #called from while loop and shouldn't read from stdin, so we're using "ssh -n"
-get_ssh_size() {
+get_ssh_size()
-    local _opt _out _size
+{
-    _opt="-i $SSH_KEY_LOCATION -o BatchMode=yes -o StrictHostKeyChecking=yes"
+	local _out
-    _out=$(ssh -q -n $_opt $1 "df -P $SAVE_PATH")
+	local _opt=("-i" "$SSH_KEY_LOCATION" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=yes")
-    [ $? -ne 0 ] && {
-        perror_exit "checking remote ssh server available size failed."
-    }
 
-    #ssh output removed the line break, so print field NF-2
+	if ! _out=$(ssh -q -n "${_opt[@]}" "$1" "df" "--output=avail" "$SAVE_PATH"); then
-    _size=$(echo -n $_out| awk '{avail=NF-2; print $avail}')
+		perror_exit "checking remote ssh server available size failed."
-    echo -n $_size
+	fi
+
+	echo -n "$_out" | tail -1
 }
 
 #mkdir if save path does not exist on ssh dump target
@@ -114,41 +117,37 @@ get_ssh_size() {
 mkdir_save_path_ssh()
 {
 	local _opt _dir
-    _opt="-i $SSH_KEY_LOCATION -o BatchMode=yes -o StrictHostKeyChecking=yes"
+	_opt=(-i "$SSH_KEY_LOCATION" -o BatchMode=yes -o StrictHostKeyChecking=yes)
-    ssh -qn $_opt $1 mkdir -p $SAVE_PATH 2>&1 > /dev/null
+	ssh -qn "${_opt[@]}" "$1" mkdir -p "$SAVE_PATH" &> /dev/null ||
-    _ret=$?
-    if [ $_ret -ne 0 ]; then
 		perror_exit "mkdir failed on $1:$SAVE_PATH"
-    fi
 
-    #check whether user has write permission on $1:$SAVE_PATH
+	# check whether user has write permission on $1:$SAVE_PATH
-    _dir=$(ssh -qn $_opt $1 mktemp -dqp $SAVE_PATH 2>/dev/null)
+	_dir=$(ssh -qn "${_opt[@]}" "$1" mktemp -dqp "$SAVE_PATH" 2> /dev/null) ||
-    _ret=$?
-    if [ $_ret -ne 0 ]; then
 		perror_exit "Could not create temporary directory on $1:$SAVE_PATH. Make sure user has write permission on destination"
-    fi
+	ssh -qn "${_opt[@]}" "$1" rmdir "$_dir"
-    ssh -qn $_opt $1 rmdir $_dir
 
 	return 0
 }
 
 #Function: get_fs_size
 #$1=dump target
-get_fs_size() {
+get_fs_size()
-    local _mnt=$(get_mntpoint_from_target $1)
+{
-    echo -n $(df -P "${_mnt}/$SAVE_PATH"|tail -1|awk '{print $4}')
+	df --output=avail "$(get_mntpoint_from_target "$1")/$SAVE_PATH" | tail -1
 }
 
 #Function: get_raw_size
 #$1=dump target
-get_raw_size() {
+get_raw_size()
-        echo -n $(fdisk -s "$1")
+{
+	fdisk -s "$1"
 }
 
 #Function: check_size
 #$1: dump type string ('raw', 'fs', 'ssh')
 #$2: dump target
-check_size() {
+check_size()
+{
 	local avail memtotal
 
 	memtotal=$(awk '/MemTotal/{print $2}' /proc/meminfo)
@@ -164,13 +163,10 @@ check_size() {
 		;;
 	*)
 		return
-    esac
+		;;
+	esac || perror_exit "Check dump target size failed"
 
-    if [ $? -ne 0 ]; then
+	if [[ $avail -lt $memtotal ]]; then
-            perror_exit "Check dump target size failed"
-    fi
-
-    if [ $avail -lt $memtotal ]; then
 		dwarn "Warning: There might not be enough space to save a vmcore."
 		dwarn "         The size of $2 should be greater than $memtotal kilo bytes."
 	fi
@@ -180,23 +176,45 @@ check_save_path_fs()
 {
 	local _path=$1
 
-    if [ ! -d $_path ]; then
+	if [[ ! -d $_path ]]; then
 		perror_exit "Dump path $_path does not exist."
 	fi
 }
 
+mount_failure()
+{
+	local _target=$1
+	local _mnt=$2
+	local _fstype=$3
+	local msg="Failed to mount $_target"
+
+	if [[ -n $_mnt ]]; then
+		msg="$msg on $_mnt"
+	fi
+
+	msg="$msg for kdump preflight check."
+
+	if [[ $_fstype == "nfs" ]]; then
+		msg="$msg Please make sure nfs-utils has been installed."
+	fi
+
+	perror_exit "$msg"
+}
+
 check_user_configured_target()
 {
 	local _target=$1 _cfg_fs_type=$2 _mounted
-    local _mnt=$(get_mntpoint_from_target $_target)
+	local _mnt _opt _fstype
-    local _opt=$(get_mntopt_from_target $_target)
-    local _fstype=$(get_fs_type_from_target $_target)
 
-    if [ -n "$_fstype" ]; then
+	_mnt=$(get_mntpoint_from_target "$_target")
+	_opt=$(get_mntopt_from_target "$_target")
+	_fstype=$(get_fs_type_from_target "$_target")
+
+	if [[ -n $_fstype ]]; then
 		# In case of nfs4, nfs should be used instead, nfs* options is deprecated in kdump.conf
-        [[ $_fstype = "nfs"* ]] && _fstype=nfs
+		[[ $_fstype == "nfs"* ]] && _fstype=nfs
 
-        if [ -n "$_cfg_fs_type" ] && [ "$_fstype" != "$_cfg_fs_type" ]; then
+		if [[ -n $_cfg_fs_type ]] && [[ $_fstype != "$_cfg_fs_type" ]]; then
 			perror_exit "\"$_target\" have a wrong type config \"$_cfg_fs_type\", expected \"$_fstype\""
 		fi
 	else
@@ -206,11 +224,10 @@ check_user_configured_target()
 
 	# For noauto mount, mount it inplace with default value.
 	# Else use the temporary target directory
-    if [ -n "$_mnt" ]; then
+	if [[ -n $_mnt ]]; then
 		if ! is_mounted "$_mnt"; then
-            if [[ $_opt  = *",noauto"* ]]; then
+			if [[ $_opt == *",noauto"* ]]; then
-                mount $_mnt
+				mount "$_mnt" || mount_failure "$_target" "$_mnt" "$_fstype"
-                [ $? -ne 0 ] && perror_exit "Failed to mount $_target on $_mnt for kdump preflight check."
 				_mounted=$_mnt
 			else
 				perror_exit "Dump target \"$_target\" is neither mounted nor configured as \"noauto\""
@@ -218,31 +235,31 @@ check_user_configured_target()
 		fi
 	else
 		_mnt=$MKDUMPRD_TMPMNT
-        mkdir -p $_mnt
+		mkdir -p "$_mnt"
-        mount $_target $_mnt -t $_fstype -o defaults
+		mount "$_target" "$_mnt" -t "$_fstype" -o defaults || mount_failure "$_target" "" "$_fstype"
-        [ $? -ne 0 ] && perror_exit "Failed to mount $_target for kdump preflight check."
 		_mounted=$_mnt
 	fi
 
 	# For user configured target, use $SAVE_PATH as the dump path within the target
-    if [ ! -d "$_mnt/$SAVE_PATH" ]; then
+	if [[ ! -d "$_mnt/$SAVE_PATH" ]]; then
 		perror_exit "Dump path \"$SAVE_PATH\" does not exist in dump target \"$_target\""
 	fi
 
 	check_size fs "$_target"
 
 	# Unmount it early, if function is interrupted and didn't reach here, the shell trap will clear it up anyway
-    if [ -n "$_mounted" ]; then
+	if [[ -n $_mounted ]]; then
-        umount -f -- $_mounted
+		umount -f -- "$_mounted"
 	fi
 }
 
 # $1: core_collector config value
-verify_core_collector() {
+verify_core_collector()
+{
 	local _cmd="${1%% *}"
 	local _params="${1#${_cmd}}"
 
-    if [ "$_cmd" != "makedumpfile" ]; then
+	if [[ $_cmd != "makedumpfile" ]]; then
 		if is_raw_dump_target; then
 			dwarn "Warning: specifying a non-makedumpfile core collector, you will have to recover the vmcore manually."
 		fi
@@ -251,24 +268,24 @@ verify_core_collector() {
 
 	if is_ssh_dump_target || is_raw_dump_target; then
 		if ! strstr "$_params" "-F"; then
-            perror_exit "The specified dump target needs makedumpfile \"-F\" option."
+			perror_exit 'The specified dump target needs makedumpfile "-F" option.'
 		fi
 		_params="$_params vmcore"
 	else
 		_params="$_params vmcore dumpfile"
 	fi
 
+	# shellcheck disable=SC2086
 	if ! $_cmd --check-params $_params; then
 		perror_exit "makedumpfile parameter check failed."
 	fi
 }
 
-add_mount() {
+add_mount()
-    local _mnt=$(to_mount $@)
+{
+	local _mnt
 
-    if [ $? -ne 0 ]; then
+	_mnt=$(to_mount "$@") || exit 1
-        exit 1
-    fi
 
 	add_dracut_mount "$_mnt"
 }
@@ -281,28 +298,15 @@ handle_default_dump_target()
 
 	is_user_configured_dump_target && return
 
-    check_save_path_fs $SAVE_PATH
+	check_save_path_fs "$SAVE_PATH"
 
-    _save_path=$(get_bind_mount_source $SAVE_PATH)
+	_save_path=$(get_bind_mount_source "$SAVE_PATH")
-    _target=$(get_target_from_path $_save_path)
+	_target=$(get_target_from_path "$_save_path")
-    _mntpoint=$(get_mntpoint_from_target $_target)
+	_mntpoint=$(get_mntpoint_from_target "$_target")
 
 	SAVE_PATH=${_save_path##"$_mntpoint"}
 	add_mount "$_target"
-    check_size fs $_target
+	check_size fs "$_target"
-}
-
-get_override_resettable()
-{
-    local override_resettable
-
-    override_resettable=$(grep "^override_resettable" $conf_file)
-    if [ -n "$override_resettable" ]; then
-        OVERRIDE_RESETTABLE=$(echo $override_resettable | cut -d' '  -f2)
-        if [ "$OVERRIDE_RESETTABLE" != "0" ] && [ "$OVERRIDE_RESETTABLE" != "1" ];then
-            perror_exit "override_resettable value $OVERRIDE_RESETTABLE is invalid"
-        fi
-    fi
 }
 
 # $1: function name
@@ -311,9 +315,9 @@ for_each_block_target()
 	local dev majmin
 
 	for dev in $(get_kdump_targets); do
-        [ -b "$dev" ] || continue
+		[[ -b $dev ]] || continue
-        majmin=$(get_maj_min $dev)
+		majmin=$(get_maj_min "$dev")
-        check_block_and_slaves $1 $majmin && return 1
+		check_block_and_slaves "$1" "$majmin" && return 1
 	done
 
 	return 0
@@ -323,14 +327,13 @@ for_each_block_target()
 #return false if unresettable.
 is_unresettable()
 {
-    local path="/sys/$(udevadm info --query=all --path=/sys/dev/block/$1 | awk '/^P:/ {print $2}' | sed -e 's/\(cciss[0-9]\+\/\).*/\1/g' -e 's/\/block\/.*$//')/resettable"
+	local path device resettable=1
-    local resettable=1
 
-    if [ -f "$path" ]
+	path="/sys/$(udevadm info --query=all --path="/sys/dev/block/$1" | awk '/^P:/ {print $2}' | sed -e 's/\(cciss[0-9]\+\/\).*/\1/g' -e 's/\/block\/.*$//')/resettable"
-    then
+	if [[ -f $path ]]; then
-        resettable="$(cat $path)"
+		resettable="$(< "$path")"
-        [ $resettable -eq 0 -a "$OVERRIDE_RESETTABLE" -eq 0 ] && {
+		[[ $resettable -eq 0 ]] && [[ $OVERRIDE_RESETTABLE -eq 0 ]] && {
-            local device=$(udevadm info --query=all --path=/sys/dev/block/$1 | awk -F= '/DEVNAME/{print $2}')
+			device=$(udevadm info --query=all --path="/sys/dev/block/$1" | awk -F= '/DEVNAME/{print $2}')
 			derror "Error: Can not save vmcore because device $device is unresettable"
 			return 0
 		}
@@ -343,14 +346,15 @@ is_unresettable()
 #return true if resettable
 check_resettable()
 {
-    local _ret _target
+	local _target _override_resettable
 
-    get_override_resettable
+	_override_resettable=$(kdump_get_conf_val override_resettable)
+	OVERRIDE_RESETTABLE=${_override_resettable:-$OVERRIDE_RESETTABLE}
+	if [ "$OVERRIDE_RESETTABLE" != "0" ] && [ "$OVERRIDE_RESETTABLE" != "1" ]; then
+		perror_exit "override_resettable value '$OVERRIDE_RESETTABLE' is invalid"
+	fi
 
-    for_each_block_target is_unresettable
+	for_each_block_target is_unresettable && return
-    _ret=$?
-
-    [ $_ret -eq 0 ] && return
 
 	return 1
 }
@@ -371,44 +375,42 @@ if ! check_resettable; then
 fi
 
 if ! check_crypt; then
-    dwarn "Warning: Encrypted device is in dump path. User will prompted for password during second kernel boot." 
+	dwarn "Warning: Encrypted device is in dump path, which is not recommended, see kexec-kdump-howto.txt for more details."
 fi
 
 # firstly get right SSH_KEY_LOCATION
-keyfile=$(awk '/^sshkey/ {print $2}' $conf_file)
+keyfile=$(kdump_get_conf_val sshkey)
-if [ -f "$keyfile" ]; then
+if [[ -f $keyfile ]]; then
 	# canonicalize the path
-    SSH_KEY_LOCATION=$(/usr/bin/readlink -m $keyfile)
+	SSH_KEY_LOCATION=$(/usr/bin/readlink -m "$keyfile")
 fi
 
-while read config_opt config_val;
+while read -r config_opt config_val; do
-do
 	# remove inline comments after the end of a directive.
 	case "$config_opt" in
 	extra_modules)
 		extra_modules="$extra_modules $config_val"
 		;;
-    ext[234]|xfs|btrfs|minix|nfs)
+	ext[234] | xfs | btrfs | minix | nfs | virtiofs)
 		check_user_configured_target "$config_val" "$config_opt"
 		add_mount "$config_val" "$config_opt"
 		;;
 	raw)
 		# checking raw disk writable
-        dd if=$config_val count=1 of=/dev/null > /dev/null 2>&1 || {
+		dd if="$config_val" count=1 of=/dev/null > /dev/null 2>&1 || {
 			perror_exit "Bad raw disk $config_val"
 		}
-        _praw=$(persistent_policy="by-id" kdump_get_persistent_dev $config_val)
+		_praw=$(persistent_policy="by-id" kdump_get_persistent_dev "$config_val")
-        if [ -z "$_praw" ]; then
+		if [[ -z $_praw ]]; then
 			exit 1
 		fi
 		add_dracut_arg "--device" "$_praw"
-        check_size raw $config_val
+		check_size raw "$config_val"
 		;;
 	ssh)
-        if strstr "$config_val" "@";
+		if strstr "$config_val" "@"; then
-        then
+			mkdir_save_path_ssh "$config_val"
-            mkdir_save_path_ssh $config_val
+			check_size ssh "$config_val"
-            check_size ssh $config_val
 			add_dracut_sshkey "$SSH_KEY_LOCATION"
 		else
 			perror_exit "Bad ssh dump target $config_val"
@@ -418,18 +420,36 @@ do
 		verify_core_collector "$config_val"
 		;;
 	dracut_args)
-        add_dracut_arg $config_val
+
-        ;;
+		# When users specify nfs dumping via dracut_args, kexec-tools won't
-    *)
+		# mount nfs fs beforehand thus nfsv4-related drivers won't be installed
+		# because we call dracut with --hostonly-mode strict. So manually install
+		# nfsv4-related drivers.
+		if [[ $(get_dracut_args_fstype "$config_val") == nfs* ]]; then
+			add_dracut_arg "--add-drivers" nfs_layout_nfsv41_files
+		fi
+
+		while read -r dracut_arg; do
+			add_dracut_arg "$dracut_arg"
+		done <<< "$(echo "$config_val" | xargs -n 1 echo)"
 		;;
+	*) ;;
+
 	esac
-done <<< "$(read_strip_comments $conf_file)"
+done <<< "$(kdump_read_conf)"
 
 handle_default_dump_target
 
-if [ -n "$extra_modules" ]
+if ! have_compression_in_dracut_args; then
-then
+	if is_squash_available && dracut_have_option "--squash-compressor"; then
-    add_dracut_arg "--add-drivers" \"$extra_modules\"
+		add_dracut_arg "--squash-compressor" "zstd"
+	elif is_zstd_command_available; then
+		add_dracut_arg "--compress" "zstd"
+	fi
+fi
+
+if [[ -n $extra_modules ]]; then
+	add_dracut_arg "--add-drivers" "$extra_modules"
 fi
 
 # TODO: The below check is not needed anymore with the introduction of
@@ -440,7 +460,7 @@ fi
 if ! is_fadump_capable; then
 	# The 2nd rootfs mount stays behind the normal dump target mount,
 	# so it doesn't affect the logic of check_dump_fs_modified().
-    is_dump_to_rootfs && add_mount "$(to_dev_name $(get_root_fs_device))"
+	is_dump_to_rootfs && add_mount "$(to_dev_name "$(get_root_fs_device)")"
 
 	add_dracut_arg "--no-hostonly-default-device"
 
@@ -449,4 +469,13 @@ if ! is_fadump_capable; then
 	fi
 fi
 
-echo "$dracut_args $@" | xargs dracut
+# This is RHEL-only to work around nvme problem, then real fix should go to dracut
+if [[ -d /sys/module/nvme ]]; then
+	add_dracut_arg "--add-drivers" "nvme"
+fi
+
+dracut "${dracut_args[@]}" "$@"
+
+_rc=$?
+sync
+exit $_rc

SOURCES/mkfadumprd

@@ -2,7 +2,7 @@
 # Generate an initramfs image that isolates dump capture capability within
 # the default initramfs using zz-fadumpinit dracut module.
 
-if [ -f /etc/sysconfig/kdump ]; then
+if [[ -f /etc/sysconfig/kdump ]]; then
 	. /etc/sysconfig/kdump
 fi
 
@@ -17,7 +17,7 @@ if ! dlog_init; then
 	exit 1
 fi
 
-readonly MKFADUMPRD_TMPDIR="$(mktemp -d -t mkfadumprd.XXXXXX)"
+MKFADUMPRD_TMPDIR="$(mktemp -d -t mkfadumprd.XXXXXX)"
 [ -d "$MKFADUMPRD_TMPDIR" ] || perror_exit "mkfadumprd: mktemp -d -t mkfadumprd.XXXXXX failed."
 trap '
     ret=$?;
@@ -38,27 +38,37 @@ FADUMP_INITRD="$MKFADUMPRD_TMPDIR/fadump.img"
 # this file tells the initrd is fadump enabled
 touch "$MKFADUMPRD_TMPDIR/fadump.initramfs"
 ddebug "rebuild fadump initrd: $FADUMP_INITRD $DEFAULT_INITRD $KDUMP_KERNELVER"
-if ! $MKDUMPRD "$FADUMP_INITRD" -i "$MKFADUMPRD_TMPDIR/fadump.initramfs" /etc/fadump.initramfs; then
+# Don't use squash for capture image or default image as it negatively impacts
+# compression ratio and increases the size of the initramfs image.
+# Don't compress the capture image as uncompressed image is needed immediately.
+# Also, early microcode would not be needed here.
+if ! $MKDUMPRD "$FADUMP_INITRD" -i "$MKFADUMPRD_TMPDIR/fadump.initramfs" /etc/fadump.initramfs --omit squash --no-compress --no-early-microcode; then
 	perror_exit "mkfadumprd: failed to build image with dump capture support"
 fi
 
-### Unpack the initramfs having dump capture capability
+### Unpack the initramfs having dump capture capability retaining previous file modification time.
+# This helps in saving space by hardlinking identical files.
 mkdir -p "$MKFADUMPRD_TMPDIR/fadumproot"
-if ! (pushd "$MKFADUMPRD_TMPDIR/fadumproot" > /dev/null && lsinitrd --unpack "$FADUMP_INITRD" && \
+if ! cpio -id --preserve-modification-time --quiet -D "$MKFADUMPRD_TMPDIR/fadumproot" < "$FADUMP_INITRD"; then
-	popd > /dev/null); then
 	derror "mkfadumprd: failed to unpack '$MKFADUMPRD_TMPDIR'"
 	exit 1
 fi
 
 ### Pack it into the normal boot initramfs with zz-fadumpinit module
-_dracut_isolate_args="--rebuild $REBUILD_INITRD --add zz-fadumpinit \
+_dracut_isolate_args=(
-	-i $MKFADUMPRD_TMPDIR/fadumproot /fadumproot \
+	--rebuild "$REBUILD_INITRD" --add zz-fadumpinit
-	-i $MKFADUMPRD_TMPDIR/fadumproot/usr/lib/dracut/loaded-kernel-modules.txt
+	-i "$MKFADUMPRD_TMPDIR/fadumproot" /fadumproot
-	   /usr/lib/dracut/fadump-kernel-modules.txt"
+	-i "$MKFADUMPRD_TMPDIR/fadumproot/usr/lib/dracut/hostonly-kernel-modules.txt"
+	/usr/lib/dracut/fadump-kernel-modules.txt
+)
 
-if is_squash_available; then
+# Use zstd compression method, if available
-	_dracut_isolate_args="$_dracut_isolate_args --add squash"
+if ! have_compression_in_dracut_args; then
+	if is_zstd_command_available; then
+		_dracut_isolate_args+=(--compress zstd)
+	fi
 fi
-if ! dracut --force --quiet $_dracut_isolate_args $@ "$TARGET_INITRD"; then
+
+if ! dracut --force --quiet "${_dracut_isolate_args[@]}" "$@" "$TARGET_INITRD"; then
 	perror_exit "mkfadumprd: failed to setup '$TARGET_INITRD' with dump capture capability"
 fi

SOURCES/rhelonly-kexec-tools-2.0.16-koji-build-fail-workaround.patch

@@ -1,13 +0,0 @@
-diff --git a/purgatory/Makefile b/purgatory/Makefile
-index 49ce80a..97b7a03 100644
---- a/purgatory/Makefile
-+++ b/purgatory/Makefile
-@@ -67,7 +67,7 @@ $(PURGATORY): $(PURGATORY_OBJS)
- 	$(MKDIR) -p $(@D)
- 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@.sym $^
- #	$(LD) $(LDFLAGS) $(EXTRA_LDFLAGS) --no-undefined -e purgatory_start -r -o $@ $(PURGATORY_OBJS) $(UTIL_LIB)
--	$(STRIP) --strip-debug -o $@ $@.sym
-+	$(STRIP) --strip-debug --no-merge-notes -o $@ $@.sym
- 
- echo::
- 	@echo "PURGATORY_SRCS $(PURGATORY_SRCS)"

SOURCES/rhelonly-kexec-tools-2.0.18-eppic-fix-issues-with-hardening-flags.patch

@@ -1,51 +0,0 @@
-From ce720608d5933e62f77f2c2f216859cf4f06adf8 Mon Sep 17 00:00:00 2001
-From: Kairui Song <kasong@redhat.com>
-Date: Wed, 13 Feb 2019 00:03:51 +0800
-Subject: [PATCH] Fix eppic issue with hardening flags
-
-This is stash of two commits:
-
-commit f98cf5fe07f390554696755f0a5843f6bb9c4716
-Author: ryncsn <ryncsn@gmail.com>
-Date:   Tue Mar 19 13:39:25 2019 +0800
-
-    Tell gcc not to omit frame pointer
-
-    After commit 0209874, it's now possible to enable optimization above O0.
-    But eppic might call __builtin_return_address(1). With O1,
-    -fomit-frame-pointer is enabled gcc may omit frame pointer.
-    __builtin_return_address(1) relies on callee preserves RBP as the stack
-    base, which is untrue if optimization is usded. In this case it may return
-    wrong value or crash.
-
-    In case of any potential failure, use -fno-omit-frame-pointer globally.
-
-    Signed-off-by: Kairui Song <ryncsn@gmail.com>
-
-commit 0209874f4b46b8af5a2d42662ba6775cf5a1dc44
-Author: Kairui Song <kasong@redhat.com>
-Date:   Wed Feb 13 00:03:51 2019 +0800
-
-    Drop O0 CFLAGS override in Makefile
-
-Signed-off-by: Kairui Song <kasong@redhat.com>
----
- libeppic/Makefile | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/libeppic/Makefile b/libeppic/Makefile
-index bcf2edf..8b97c87 100644
---- a/eppic/libeppic/Makefile
-+++ b/eppic/libeppic/Makefile
-@@ -24,7 +24,7 @@ LDIRT    = lex.eppic.c lex.eppicpp.c eppic.tab.c eppic.tab.h eppicpp.tab.c \
- LIBDIR	 = /usr/lib
- TARGETS  = libeppic.a
- 
--CFLAGS += -O0 -g -fPIC
-+CFLAGS += -g -fno-omit-frame-pointer -fPIC
- ifeq ($(TARGET), PPC64)
- 	CFLAGS += -m64
- endif
--- 
-2.20.1
-

SOURCES/rhelonly-kexec-tools-2.0.20-makedumpfile-arm64-Add-support-for-ARMv8.2-LVA-52-bi.patch

@@ -1,88 +0,0 @@
-From 0f632fa180e5a44219ab6bbe0879c3583f8c65cf Mon Sep 17 00:00:00 2001
-From: Pingfan Liu <piliu@redhat.com>
-Date: Tue, 9 Nov 2021 11:24:22 +0800
-Subject: [PATCH] RHEL-only
-
-Cope with RHEL8 kernel
-
-Signed-off-by: Pingfan Liu <piliu@redhat.com>
----
- arch/arm64.c   | 14 +++++++++++++-
- makedumpfile.c |  2 ++
- makedumpfile.h |  1 +
- 3 files changed, 16 insertions(+), 1 deletion(-)
-
-diff --git a/makedumpfile-1.7.2/arch/arm64.c b/makedumpfile-1.7.2/arch/arm64.c
-index 1072178..95beae6 100644
---- a/makedumpfile-1.7.2/arch/arm64.c
-+++ b/makedumpfile-1.7.2/arch/arm64.c
-@@ -50,6 +50,7 @@ static int va_bits;
- static int vabits_actual;
- static int flipped_va;
- static unsigned long kimage_voffset;
-+static int max_user_va_bits;
- 
- #define SZ_4K			4096
- #define SZ_16K			16384
-@@ -108,7 +109,7 @@ typedef unsigned long pgdval_t;
- #define PGDIR_SHIFT		ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - (pgtable_level))
- #define PGDIR_SIZE		(_AC(1, UL) << PGDIR_SHIFT)
- #define PGDIR_MASK		(~(PGDIR_SIZE-1))
--#define PTRS_PER_PGD		(1 << ((va_bits) - PGDIR_SHIFT))
-+#define PTRS_PER_PGD           (1 << ((max_user_va_bits) - PGDIR_SHIFT))
- 
- /*
-  * Section address mask and size definitions.
-@@ -449,6 +450,17 @@ get_machdep_info_arm64(void)
- 		ERRMSG("Can't determine platform config values\n");
- 		return FALSE;
- 	}
-+	if (NUMBER(MAX_USER_VA_BITS) != NOT_FOUND_NUMBER) {
-+		max_user_va_bits = NUMBER(MAX_USER_VA_BITS);
-+		DEBUG_MSG("max_user_va_bits : %d (vmcoreinfo)\n",
-+		                max_user_va_bits);
-+	}
-+	if (!max_user_va_bits) {
-+		max_user_va_bits = va_bits;
-+		DEBUG_MSG("max_user_va_bits : %d (default = va_bits)\n",
-+		                max_user_va_bits);
-+	}
-+
- 
- 	kimage_voffset = NUMBER(kimage_voffset);
- 	info->section_size_bits = SECTIONS_SIZE_BITS;
-diff --git a/makedumpfile-1.7.2/makedumpfile.c b/makedumpfile-1.7.2/makedumpfile.c
-index 3ad4443..018ea4c 100644
---- a/makedumpfile-1.7.2/makedumpfile.c
-+++ b/makedumpfile-1.7.2/makedumpfile.c
-@@ -2417,6 +2417,7 @@ write_vmcoreinfo_data(void)
- 
- 	WRITE_NUMBER("HUGETLB_PAGE_DTOR", HUGETLB_PAGE_DTOR);
- #ifdef __aarch64__
-+	WRITE_NUMBER("MAX_USER_VA_BITS", MAX_USER_VA_BITS);
- 	WRITE_NUMBER("VA_BITS", VA_BITS);
- 	/* WRITE_NUMBER("TCR_EL1_T1SZ", TCR_EL1_T1SZ); should not exists */
- 	WRITE_NUMBER_UNSIGNED("PHYS_OFFSET", PHYS_OFFSET);
-@@ -2863,6 +2864,7 @@ read_vmcoreinfo(void)
- 	READ_NUMBER("phys_base", phys_base);
- 	READ_NUMBER("KERNEL_IMAGE_SIZE", KERNEL_IMAGE_SIZE);
- #ifdef __aarch64__
-+	READ_NUMBER("MAX_USER_VA_BITS", MAX_USER_VA_BITS);
- 	READ_NUMBER("VA_BITS", VA_BITS);
- 	READ_NUMBER("TCR_EL1_T1SZ", TCR_EL1_T1SZ);
- 	READ_NUMBER_UNSIGNED("PHYS_OFFSET", PHYS_OFFSET);
-diff --git a/makedumpfile-1.7.2/makedumpfile.h b/makedumpfile-1.7.2/makedumpfile.h
-index e59239d..b6236dd 100644
---- a/makedumpfile-1.7.2/makedumpfile.h
-+++ b/makedumpfile-1.7.2/makedumpfile.h
-@@ -2064,6 +2064,7 @@ struct number_table {
- 	long	phys_base;
- 	long	KERNEL_IMAGE_SIZE;
- #ifdef __aarch64__
-+	long    MAX_USER_VA_BITS;
- 	long 	VA_BITS;
- 	long	TCR_EL1_T1SZ;
- 	unsigned long	PHYS_OFFSET;
--- 
-2.31.1
-

SOURCES/supported-kdump-targets.txt

@@ -40,24 +40,24 @@ storage:
         FC disks (qla2xxx, lpfc, bnx2fc, bfa)
         software initiator based iSCSI
         software RAID (mdraid)
-        hardware RAID (cciss, hpsa, megaraid_sas, mpt2sas, aacraid)
+        hardware RAID (smartpqi, hpsa, megaraid, mpt3sas, aacraid, mpi3mr)
         SCSI/SATA disks
         iSCSI HBA (all offload)
         hardware FCoE (qla2xxx, lpfc)
         software FCoE (bnx2fc) (Extra configuration required,
             please read "Note on FCoE" section below)
+        NVMe-FC (qla2xxx, lpfc)
 
 network:
-        Hardware using kernel modules: (tg3, igb, ixgbe, sfc, e1000e, bna,
+        Hardware using kernel modules: (igb, ixgbe, ice, i40e, e1000e, igc,
-              cnic, netxen_nic, qlge, bnx2x, bnx, qlcnic, be2net, enic,
+              tg3, bnx2x, bnxt_en, qede, cxgb4, be2net, enic, sfc, mlx4_en,
-              virtio-net, ixgbevf, igbvf)
+              mlx5_core, r8169, atlantic, nfp, ionic; nicvf (aarch64 only))
         protocol: ipv4
         bonding
         vlan
         bridge
-        team
         vlan tagged bonding
-        bridge over bond/team/vlan
+        bridge over bond/vlan
 
 hypervisor:
         kvm
@@ -67,14 +67,17 @@ filesystem:
         ext[234]
         xfs
         nfs
+        virtiofs
 
 firmware:
         BIOS
         UEFI
 
 hypervisor:
-        VMWare ESXi 4.1 and 5.1
+        VMWare ESXi 4.x 5.x would not be tested/supported any more.
-        Hyper-V 2012 R2 (RHEL Gen1 UP Guest only)
+            only support ESXi 6.6, 6.7, 7.0
+        Hyper-V 2012 R2 (RHEL Gen1 UP Guest only), later version will
+	    also be tested/supported
 
 Unsupported Dump targets
 ------------------------
@@ -114,15 +117,5 @@ issue, because some software FCoE requires more memory to work. In such case,
 you may need to increase the kdump reserved memory size in "crashkernel="
 kernel parameter.
 
-By default, RHEL systems have "crashkernel=auto" in kernel boot arguments.
-The auto reserved memory size is designed to balance the coverage of use cases
-and an acceptable memory overhead, so not every use case could fit in, software
-FCoE is one of the case.
-
 For hardware FCoE, kdump should work naturally as firmware will do the
 initialization job. The capture kernel and kdump tools will run just fine.
-
-Useful Links
-============
-[1] RHEL6: Enabling kdump for full-virt (HVM) Xen DomU
-    (https://access.redhat.com/knowledge/solutions/92943)