import kexec-tools-2.0.23-8.el9
This commit is contained in:
CentOS Sources
Stepan Oksanichenko
parent
21c4026cb8
commit
9cb4deb9ee
@ -5,142 +5,9 @@ KERNEL_VERSION="$2"
|
||||
KDUMP_INITRD_DIR_ABS="$3"
|
||||
KERNEL_IMAGE="$4"
|
||||
|
||||
grub_etc_default="/etc/default/grub"
|
||||
|
||||
ver_lt() {
|
||||
[[ "$(echo -e "$1\n$2" | sort -V)" == $1$'\n'* ]] && [[ $1 != "$2" ]]
|
||||
}
|
||||
|
||||
# Read crashkernel= value in /etc/default/grub
|
||||
get_grub_etc_ck() {
|
||||
[[ -e $grub_etc_default ]] && \
|
||||
sed -n -e "s/^GRUB_CMDLINE_LINUX=.*\(crashkernel=[^\ \"]*\)[\ \"].*$/\1/p" $grub_etc_default
|
||||
}
|
||||
|
||||
# Read crashkernel.default value of specified kernel
|
||||
get_ck_default() {
|
||||
ck_file="/usr/lib/modules/$1/crashkernel.default"
|
||||
[[ -f "$ck_file" ]] && cat "$ck_file"
|
||||
}
|
||||
|
||||
# Iterate installed kernels, find the kernel with the highest version that has a
|
||||
# valid crashkernel.default file, exclude current installing/removing kernel
|
||||
#
|
||||
# $1: a string representing a crashkernel= cmdline. If given, will also check the
|
||||
# content of crashkernel.default, only crashkernel.default with the same value will match
|
||||
get_highest_ck_default_kver() {
|
||||
for kernel in $(find /usr/lib/modules -maxdepth 1 -mindepth 1 -printf "%f\n" | sort --version-sort -r); do
|
||||
[[ $kernel == "$KERNEL_VERSION" ]] && continue
|
||||
[[ -s "/usr/lib/modules/$kernel/crashkernel.default" ]] || continue
|
||||
|
||||
echo "$kernel"
|
||||
return 0
|
||||
done
|
||||
|
||||
return 1
|
||||
}
|
||||
|
||||
set_grub_ck() {
|
||||
sed -i -e "s/^\(GRUB_CMDLINE_LINUX=.*\)crashkernel=[^\ \"]*\([\ \"].*\)$/\1$1\2/" "$grub_etc_default"
|
||||
}
|
||||
|
||||
# Set specified kernel's crashkernel cmdline value
|
||||
set_kernel_ck() {
|
||||
kernel=$1
|
||||
ck_cmdline=$2
|
||||
|
||||
entry=$(grubby --info ALL | grep "^kernel=.*$kernel")
|
||||
entry=${entry#kernel=}
|
||||
entry=${entry#\"}
|
||||
entry=${entry%\"}
|
||||
|
||||
if [[ -z "$entry" ]]; then
|
||||
echo "$0: failed to find boot entry for kernel $kernel"
|
||||
return 1
|
||||
fi
|
||||
|
||||
[[ -f /etc/zipl.conf ]] && zipl_arg="--zipl"
|
||||
grubby --args "$ck_cmdline" --update-kernel "$entry" $zipl_arg
|
||||
[[ $zipl_arg ]] && zipl > /dev/null ||:
|
||||
}
|
||||
|
||||
case "$COMMAND" in
|
||||
add)
|
||||
# - If current boot kernel is using default crashkernel value, update
|
||||
# installing kernel's crashkernel value to its default value,
|
||||
# - If intalling a higher version kernel, and /etc/default/grub's
|
||||
# crashkernel value is using default value, update it to installing
|
||||
# kernel's default value.
|
||||
inst_ck_default=$(get_ck_default "$KERNEL_VERSION")
|
||||
# If installing kernel doesn't have crashkernel.default, just exit.
|
||||
[[ -z "$inst_ck_default" ]] && exit 0
|
||||
|
||||
boot_kernel=$(uname -r)
|
||||
boot_ck_cmdline=$(sed -n -e "s/^.*\(crashkernel=\S*\).*$/\1/p" /proc/cmdline)
|
||||
highest_ck_default_kver=$(get_highest_ck_default_kver)
|
||||
highest_ck_default=$(get_ck_default "$highest_ck_default_kver")
|
||||
|
||||
# Try update /etc/default/grub if present, else grub2-mkconfig could
|
||||
# override crashkernel value.
|
||||
grub_etc_ck=$(get_grub_etc_ck)
|
||||
if [[ -n "$grub_etc_ck" ]]; then
|
||||
if [[ -z "$highest_ck_default_kver" ]]; then
|
||||
# None of installed kernel have a crashkernel.default,
|
||||
# check for 'crashkernel=auto' in case of legacy kernel
|
||||
[[ "$grub_etc_ck" == "crashkernel=auto" ]] && \
|
||||
set_grub_ck "$inst_ck_default"
|
||||
else
|
||||
# There is a valid crashkernel.default, check if installing kernel
|
||||
# have a higher version and grub config is using default value
|
||||
ver_lt "$highest_ck_default_kver" "$KERNEL_VERSION" && \
|
||||
[[ "$grub_etc_ck" == "$highest_ck_default" ]] && \
|
||||
[[ "$grub_etc_ck" != "$inst_ck_default" ]] && \
|
||||
set_grub_ck "$inst_ck_default"
|
||||
fi
|
||||
fi
|
||||
|
||||
# Exit if crashkernel is not used in current cmdline
|
||||
[[ -z $boot_ck_cmdline ]] && exit 0
|
||||
|
||||
# Get current boot kernel's default value
|
||||
boot_ck_default=$(get_ck_default "$boot_kernel")
|
||||
if [[ $boot_ck_cmdline == "crashkernel=auto" ]]; then
|
||||
# Legacy RHEL kernel defaults to "auto"
|
||||
boot_ck_default="$boot_ck_cmdline"
|
||||
fi
|
||||
|
||||
# If boot kernel doesn't have a crashkernel.default, check
|
||||
# if it's using any installed kernel's crashkernel.default
|
||||
if [[ -z $boot_ck_default ]]; then
|
||||
[[ $(get_highest_ck_default_kver "$boot_ck_cmdline") ]] && boot_ck_default="$boot_ck_cmdline"
|
||||
fi
|
||||
|
||||
# If boot kernel is using a default crashkernel, update
|
||||
# installing kernel's crashkernel to new default value
|
||||
if [[ "$boot_ck_cmdline" != "$inst_ck_default" ]] && [[ "$boot_ck_cmdline" == "$boot_ck_default" ]]; then
|
||||
set_kernel_ck "$KERNEL_VERSION" "$inst_ck_default"
|
||||
fi
|
||||
|
||||
exit 0
|
||||
;;
|
||||
remove)
|
||||
# If grub default value is upgraded when this kernel was installed, try downgrade it
|
||||
grub_etc_ck=$(get_grub_etc_ck)
|
||||
[[ $grub_etc_ck ]] || exit 0
|
||||
|
||||
removing_ck_conf=$(get_ck_default "$KERNEL_VERSION")
|
||||
[[ $removing_ck_conf ]] || exit 0
|
||||
|
||||
highest_ck_default_kver=$(get_highest_ck_default_kver) || exit 0
|
||||
highest_ck_default=$(get_ck_default "$highest_ck_default_kver")
|
||||
[[ $highest_ck_default ]] || exit 0
|
||||
|
||||
if ver_lt "$highest_ck_default_kver" "$KERNEL_VERSION"; then
|
||||
if [[ $grub_etc_ck == "$removing_ck_conf" ]] && [[ $grub_etc_ck != "$highest_ck_default" ]]; then
|
||||
set_grub_ck "$highest_ck_default"
|
||||
fi
|
||||
fi
|
||||
|
||||
kdumpctl reset-crashkernel-for-installed_kernel "$KERNEL_VERSION"
|
||||
exit 0
|
||||
;;
|
||||
esac
|
||||
|
||||
@ -13,13 +13,14 @@ kdump after you updated the `crashkernel=` value or changed the dump target.
|
||||
Default crashkernel value
|
||||
=========================
|
||||
|
||||
Latest kernel packages include a `crashkernel.default` file installed in kernel
|
||||
modules folder, available as:
|
||||
Latest kexec-tools provides "kdumpctl get-default-crashkernel" to retrieve
|
||||
the default crashkernel value,
|
||||
|
||||
/usr/lib/modules/<kernel>/crashkernel.default
|
||||
$ echo $(kdumpctl get-default-crashkernel)
|
||||
1G-4G:192M,4G-64G:256M,64G-102400T:512M
|
||||
|
||||
The content of the file will be taken as the default value of 'crashkernel=', or
|
||||
take this file as a reference for setting crashkernel value manually.
|
||||
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
|
||||
@ -27,7 +28,7 @@ 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 `crashkernel.default` file as the default `crashkernel=` value on
|
||||
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.
|
||||
@ -36,20 +37,11 @@ Users can override the value during Anaconda installation manually.
|
||||
Auto update of crashkernel boot parameter
|
||||
=========================================
|
||||
|
||||
Following context in this section assumes all kernel packages have a
|
||||
`crashkernel.default` file bundled, which is true for the latest official kernel
|
||||
packages. For kexec-tools behavior with a kernel that doesn't have a
|
||||
`crashkernel.default` file, please refer to the “Custom Kernel” section of this
|
||||
doc.
|
||||
|
||||
When `crashkernel=` is using the default value, kexec-tools will need to update
|
||||
the `crashkernel=` value of new installed kernels, since the default value may
|
||||
change in new kernel packages.
|
||||
|
||||
kexec-tools does so by adding a kernel installation hook, which gets triggered
|
||||
every time a new kernel is installed, so kexec-tools can do necessary checks and
|
||||
updates.
|
||||
|
||||
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 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
|
||||
---------------------
|
||||
@ -59,92 +51,13 @@ on `grubby`. If other boot loaders are used, the user will have to update the
|
||||
`crashkernel=` value manually.
|
||||
|
||||
|
||||
Updating kernel package
|
||||
-----------------------
|
||||
|
||||
When a new version of package kernel is released in the official repository, the
|
||||
package will always come with a `crashkernel.default` file bundled. Kexec-tools
|
||||
will act with following rules:
|
||||
|
||||
If current boot kernel is using the default `crashkernel=` boot param value from
|
||||
its `crashkernel.default` file, then kexec-tools will update new installed
|
||||
kernel’s `crashkernel=` boot param using the value from the new installed
|
||||
kernel’s `crashkernel.default` file. This ensures `crashkernel=` is always using
|
||||
the latest default value.
|
||||
|
||||
If current boot kernel's `crashkernel=` value is set to a non-default value, the
|
||||
new installed kernel simply inherits this value.
|
||||
|
||||
On systems using GRUB2 as the bootloader, each kernel has its own boot entry,
|
||||
making it possible to set different `crashkernel=` boot param values for
|
||||
different kernels. So kexec-tools won’t touch any already installed kernel's
|
||||
boot param, only new installed kernel's `crashkernel=` boot param value will be
|
||||
updated.
|
||||
|
||||
But some utilities like `grub2-mkconfig` and `grubby` can override all boot
|
||||
entry's boot params with the boot params value from the GRUB config file
|
||||
`/etc/defaults/grub`, so kexec-tools will also update the GRUB config file in
|
||||
case old `crashkernel=` value overrides new installed kernel’s boot param.
|
||||
|
||||
|
||||
Downgrading kernel package
|
||||
--------------------------
|
||||
|
||||
When upgrading a kernel package, kexec-tools may update the `crashkernel=` value
|
||||
in GRUB2 config file to the new value. So when downgrading the kernel package,
|
||||
kexec-tools will also try to revert that update by setting GRUB2 config file’s
|
||||
`crashkernel=` value back to the default value in the older kernel package. This
|
||||
will only occur when the GRUB2 config file is using the default `crashkernel=`
|
||||
value.
|
||||
|
||||
|
||||
Custom kernel
|
||||
=============
|
||||
|
||||
To make auto crashkernel update more robust, kexec-tools will try to keep
|
||||
tracking the default 'crashkernel=` value with kernels that don’t have a
|
||||
`crashkernel.default` file, such kernels are referred to as “custom kernel” in
|
||||
this doc. This is only a best-effort support to make it easier debugging and
|
||||
testing the system.
|
||||
|
||||
When installing a custom kernel that doesn’t have a `crashkernel.default` file,
|
||||
the `crashkernel=` value will be simply inherited from the current boot kernel.
|
||||
|
||||
When installing a new official kernel package and current boot kernel is a
|
||||
custom kernel, since the boot kernel doesn’t have a `crashkernel.default` file,
|
||||
kexec-tools will iterate installed kernels and check if the boot kernel
|
||||
inherited the default value from any other existing kernels’
|
||||
`crashkernel.default` file. If a matching `crashkernel.default` file is found,
|
||||
kexec-tools will update the new installed kernel `crashkernel=` boot param using
|
||||
the value from the new installed kernel’s `crashkernel.default` file, ensures
|
||||
the auto crashkernel value update won’t break over one or two custom kernel
|
||||
installations.
|
||||
|
||||
It is possible that the auto crashkernel value update will fail when custom
|
||||
kernels are used. One example is a custom kernel inheriting the default
|
||||
`crashkernel=` value from an older official kernel package, but later that
|
||||
kernel package is uninstalled. So when booted with the custom kernel,
|
||||
kexec-tools can't determine if the boot kernel is inheriting a default
|
||||
`crashkernel=` value from any official build. In such a case, please refer to
|
||||
the "Reset crashkernel to default value" section of this doc.
|
||||
|
||||
|
||||
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 or inherited from any installed kernel.
|
||||
|
||||
kexec-tools may fail to determine if the boot kernel is using default
|
||||
crashkernel value in some use cases:
|
||||
- kexec-tools package is absent during a kernel package upgrade, and the new
|
||||
kernel package’s `crashkernel.default` value has changed.
|
||||
- Custom kernel is used and the kernel it inherits `crashkernel=` value from is
|
||||
uninstalled.
|
||||
|
||||
So it's recommended to reset the crashkernel value if users have uninstalled
|
||||
kexec-tools or using a custom kernel.
|
||||
value and auto_reset_crashkernel=yes in kdump.conf. In other cases, the user
|
||||
can reset the crashkernel value by themselves.
|
||||
|
||||
Reset using kdumpctl
|
||||
--------------------
|
||||
@ -152,21 +65,23 @@ 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 version>]`
|
||||
`kdumpctl reset-crashkernel [--kernel=path_to_kernel] [--reboot]`
|
||||
|
||||
This command will read from the `crashkernel.default` file and reset
|
||||
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.
|
||||
the machine after this command to make it take effect if --reboot is not specified.
|
||||
For ppc64le, an optional "[--fadump=[on|off|nocma]]" can also be specified to toggle
|
||||
FADump on/off.
|
||||
|
||||
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 current boot kernel's crashkernel.default` is:
|
||||
kernels to current boot kernel's crashkernel.default` is:
|
||||
|
||||
grubby --update-kernel ALL --args "$(cat /usr/lib/modules/$(uname -r)/crashkernel.default)"
|
||||
grubby --update-kernel ALL --args "crashkernel=$(kdumpctl get-default-crashkernel)"
|
||||
|
||||
Estimate crashkernel
|
||||
====================
|
||||
|
||||
@ -50,7 +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"
|
||||
|
||||
@ -1010,11 +1010,29 @@ kdump_install_systemd_conf() {
|
||||
echo "ForwardToConsole=yes" >> "${initdir}/etc/systemd/journald.conf.d/kdump.conf"
|
||||
}
|
||||
|
||||
remove_cpu_online_rule() {
|
||||
local file=${initdir}/usr/lib/udev/rules.d/40-redhat.rules
|
||||
|
||||
sed -i '/SUBSYSTEM=="cpu"/d' "$file"
|
||||
}
|
||||
|
||||
install() {
|
||||
local arch
|
||||
|
||||
kdump_module_init
|
||||
kdump_install_conf
|
||||
remove_sysctl_conf
|
||||
|
||||
# Onlining secondary cpus breaks kdump completely on KVM on Power hosts
|
||||
# Though we use maxcpus=1 by default but 40-redhat.rules will bring up all
|
||||
# possible cpus by default. (rhbz1270174 rhbz1266322)
|
||||
# Thus before we get the kernel fix and the systemd rule fix let's remove
|
||||
# the cpu online rule in kdump initramfs.
|
||||
arch=$(uname -m)
|
||||
if [[ "$arch" = "ppc64le" ]] || [[ "$arch" = "ppc64" ]]; then
|
||||
remove_cpu_online_rule
|
||||
fi
|
||||
|
||||
if is_ssh_dump_target; then
|
||||
kdump_install_random_seed
|
||||
fi
|
||||
|
||||
@ -5,6 +5,8 @@
|
||||
|
||||
DEFAULT_PATH="/var/crash/"
|
||||
KDUMP_CONFIG_FILE="/etc/kdump.conf"
|
||||
FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump"
|
||||
FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send"
|
||||
|
||||
# Read kdump config in well formated style
|
||||
kdump_read_conf()
|
||||
|
||||
@ -5,8 +5,6 @@
|
||||
|
||||
. /usr/lib/kdump/kdump-lib-initramfs.sh
|
||||
|
||||
FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump"
|
||||
FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send"
|
||||
FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump_enabled"
|
||||
|
||||
is_fadump_capable()
|
||||
@ -31,6 +29,11 @@ is_squash_available()
|
||||
done
|
||||
}
|
||||
|
||||
is_zstd_command_available()
|
||||
{
|
||||
[[ -x "$(command -v zstd)" ]]
|
||||
}
|
||||
|
||||
perror_exit()
|
||||
{
|
||||
derror "$@"
|
||||
@ -108,7 +111,7 @@ get_block_dump_target()
|
||||
|
||||
is_dump_to_rootfs()
|
||||
{
|
||||
[[ $(kdump_get_conf_val "failure_action|default") == dump_to_rootfs ]]
|
||||
[[ $(kdump_get_conf_val 'failure_action\|default') == dump_to_rootfs ]]
|
||||
}
|
||||
|
||||
get_failure_action_target()
|
||||
@ -443,6 +446,12 @@ is_wdt_active()
|
||||
return 1
|
||||
}
|
||||
|
||||
have_compression_in_dracut_args()
|
||||
{
|
||||
[[ "$(kdump_get_conf_val dracut_args)" =~ \
|
||||
(^|[[:space:]])--(gzip|bzip2|lzma|xz|lzo|lz4|zstd|no-compress|compress)([[:space:]]|$) ]]
|
||||
}
|
||||
|
||||
# If "dracut_args" contains "--mount" information, use it
|
||||
# directly without any check(users are expected to ensure
|
||||
# its correctness).
|
||||
@ -773,10 +782,6 @@ prepare_cmdline()
|
||||
fi
|
||||
done
|
||||
|
||||
# Remove trace_buf_size, trace_event
|
||||
cmdline=$(remove_cmdline_param "$cmdline" trace_buf_size trace_event)
|
||||
cmdline="${cmdline} trace_buf_size=1"
|
||||
|
||||
echo "$cmdline"
|
||||
}
|
||||
|
||||
@ -822,41 +827,53 @@ get_recommend_size()
|
||||
IFS="$OLDIFS"
|
||||
}
|
||||
|
||||
# get default crashkernel
|
||||
# $1 dump mode, if not specified, dump_mode will be judged by is_fadump_capable
|
||||
kdump_get_arch_recommend_crashkernel()
|
||||
{
|
||||
local _arch _ck_cmdline _dump_mode
|
||||
|
||||
if [[ -z "$1" ]]; then
|
||||
if is_fadump_capable; then
|
||||
_dump_mode=fadump
|
||||
else
|
||||
_dump_mode=kdump
|
||||
fi
|
||||
else
|
||||
_dump_mode=$1
|
||||
fi
|
||||
|
||||
_arch=$(uname -m)
|
||||
|
||||
if [[ $_arch == "x86_64" ]] || [[ $_arch == "s390x" ]]; then
|
||||
_ck_cmdline="1G-4G:192M,4G-64G:256M,64G-:512M"
|
||||
elif [[ $_arch == "aarch64" ]]; then
|
||||
_ck_cmdline="2G-:448M"
|
||||
elif [[ $_arch == "ppc64le" ]]; then
|
||||
if [[ $_dump_mode == "fadump" ]]; then
|
||||
_ck_cmdline="4G-16G:768M,16G-64G:1G,64G-128G:2G,128G-1T:4G,1T-2T:6G,2T-4T:12G,4T-8T:20G,8T-16T:36G,16T-32T:64G,32T-64T:128G,64T-:180G"
|
||||
else
|
||||
_ck_cmdline="2G-4G:384M,4G-16G:512M,16G-64G:1G,64G-128G:2G,128G-:4G"
|
||||
fi
|
||||
fi
|
||||
|
||||
echo -n "$_ck_cmdline"
|
||||
}
|
||||
|
||||
# return recommended size based on current system RAM size
|
||||
# $1: kernel version, if not set, will defaults to $(uname -r)
|
||||
kdump_get_arch_recommend_size()
|
||||
{
|
||||
local kernel=$1 arch
|
||||
local _ck_cmdline _sys_mem
|
||||
|
||||
if ! [[ -r "/proc/iomem" ]]; then
|
||||
echo "Error, can not access /proc/iomem."
|
||||
return 1
|
||||
fi
|
||||
|
||||
[[ -z $kernel ]] && kernel=$(uname -r)
|
||||
ck_cmdline=$(cat "/usr/lib/modules/$kernel/crashkernel.default" 2> /dev/null)
|
||||
|
||||
if [[ -n $ck_cmdline ]]; then
|
||||
ck_cmdline=${ck_cmdline#crashkernel=}
|
||||
else
|
||||
arch=$(lscpu | grep Architecture | awk -F ":" '{ print $2 }' | tr '[:lower:]' '[:upper:]')
|
||||
if [[ $arch == "X86_64" ]] || [[ $arch == "S390X" ]]; then
|
||||
ck_cmdline="1G-4G:160M,4G-64G:192M,64G-1T:256M,1T-:512M"
|
||||
elif [[ $arch == "AARCH64" ]]; then
|
||||
ck_cmdline="2G-:448M"
|
||||
elif [[ $arch == "PPC64LE" ]]; then
|
||||
if is_fadump_capable; then
|
||||
ck_cmdline="4G-16G:768M,16G-64G:1G,64G-128G:2G,128G-1T:4G,1T-2T:6G,2T-4T:12G,4T-8T:20G,8T-16T:36G,16T-32T:64G,32T-64T:128G,64T-:180G"
|
||||
else
|
||||
ck_cmdline="2G-4G:384M,4G-16G:512M,16G-64G:1G,64G-128G:2G,128G-:4G"
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
ck_cmdline=${ck_cmdline//-:/-102400T:}
|
||||
sys_mem=$(get_system_size)
|
||||
|
||||
get_recommend_size "$sys_mem" "$ck_cmdline"
|
||||
_sys_mem=$(get_system_size)
|
||||
_ck_cmdline=$(kdump_get_arch_recommend_crashkernel)
|
||||
_ck_cmdline=${_ck_cmdline//-:/-102400T:}
|
||||
get_recommend_size "$_sys_mem" "$_ck_cmdline"
|
||||
}
|
||||
|
||||
# Print all underlying crypt devices of a block device
|
||||
|
||||
@ -11,6 +11,12 @@
|
||||
#
|
||||
# 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,
|
||||
@ -170,6 +176,7 @@
|
||||
#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
|
||||
|
||||
@ -26,6 +26,12 @@ 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 to new default value
|
||||
or not when kexec-tools updates the default crashkernel value and
|
||||
existing kernels using the old default kernel crashkernel value
|
||||
|
||||
.B raw <partition>
|
||||
.RS
|
||||
Will dd /proc/vmcore into <partition>. Use persistent device names for
|
||||
|
||||
381
SOURCES/kdumpctl
381
SOURCES/kdumpctl
@ -235,7 +235,7 @@ check_config()
|
||||
ext[234] | minix | btrfs | xfs | nfs | ssh)
|
||||
config_opt=_target
|
||||
;;
|
||||
sshkey | path | core_collector | kdump_post | kdump_pre | extra_bins | extra_modules | failure_action | default | final_action | force_rebuild | force_no_rebuild | fence_kdump_args | fence_kdump_nodes) ;;
|
||||
sshkey | path | core_collector | kdump_post | kdump_pre | extra_bins | extra_modules | failure_action | default | final_action | force_rebuild | force_no_rebuild | fence_kdump_args | fence_kdump_nodes | auto_reset_crashkernel) ;;
|
||||
|
||||
net | options | link_delay | disk_timeout | debug_mem_level | blacklist)
|
||||
derror "Deprecated kdump config option: $config_opt. Refer to kdump.conf manpage for alternatives."
|
||||
@ -1299,38 +1299,363 @@ do_estimate()
|
||||
fi
|
||||
}
|
||||
|
||||
reset_crashkernel()
|
||||
get_default_crashkernel()
|
||||
{
|
||||
local kernel=$1 entry crashkernel_default
|
||||
local grub_etc_default="/etc/default/grub"
|
||||
local _dump_mode=$1
|
||||
|
||||
[[ -z $kernel ]] && kernel=$(uname -r)
|
||||
crashkernel_default=$(cat "/usr/lib/modules/$kernel/crashkernel.default" 2> /dev/null)
|
||||
kdump_get_arch_recommend_crashkernel "$_dump_mode"
|
||||
}
|
||||
|
||||
if [[ -z $crashkernel_default ]]; then
|
||||
derror "$kernel doesn't have a crashkernel.default"
|
||||
exit 1
|
||||
# Read kernel cmdline parameter for a specific kernel
|
||||
# $1: kernel path, DEFAULT or kernel path, ALL not accepted
|
||||
# $2: kernel cmldine parameter
|
||||
get_grub_kernel_boot_parameter()
|
||||
{
|
||||
local _kernel_path=$1 _para=$2
|
||||
|
||||
[[ $_kernel_path == ALL ]] && derror "kernel_path=ALL invalid for get_grub_kernel_boot_parameter" && return 1
|
||||
grubby --info="$_kernel_path" | sed -En -e "/^args=.*$/{s/^.*(\s|\")${_para}=(\S*).*\"$/\2/p;q}"
|
||||
}
|
||||
|
||||
# get dump mode by fadump value
|
||||
# return
|
||||
# - fadump, if fadump=on or fadump=nocma
|
||||
# - kdump, if fadump=off or empty fadump, return kdump
|
||||
# - error if otherwise
|
||||
get_dump_mode_by_fadump_val()
|
||||
{
|
||||
local _fadump_val=$1
|
||||
|
||||
if [[ -z $_fadump_val ]] || [[ $_fadump_val == off ]]; then
|
||||
echo -n kdump
|
||||
elif [[ $_fadump_val == on ]] || [[ $_fadump_val == nocma ]]; then
|
||||
echo -n fadump
|
||||
else
|
||||
derror "invalid fadump=$_fadump_val"
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
# get dump mode of a specific kernel
|
||||
# based on its fadump kernel cmdline parameter
|
||||
get_dump_mode_by_kernel()
|
||||
{
|
||||
local _kernel_path=$1 _fadump_val _dump_mode
|
||||
|
||||
_fadump_val=$(get_grub_kernel_boot_parameter "$_kernel_path" fadump)
|
||||
if _dump_mode=$(get_dump_mode_by_fadump_val "$_fadump_val"); then
|
||||
echo -n "$_dump_mode"
|
||||
else
|
||||
derror "failed to get dump mode for kernel $_kernel_path"
|
||||
exit
|
||||
fi
|
||||
}
|
||||
|
||||
_filter_grubby_kernel_str()
|
||||
{
|
||||
local _grubby_kernel_str=$1
|
||||
echo -n "$_grubby_kernel_str" | sed -n -e 's/^kernel="\(.*\)"/\1/p'
|
||||
}
|
||||
|
||||
_find_kernel_path_by_release()
|
||||
{
|
||||
local _release="$1" _grubby_kernel_str _kernel_path
|
||||
_grubby_kernel_str=$(grubby --info ALL | grep "^kernel=.*$_release")
|
||||
_kernel_path=$(_filter_grubby_kernel_str "$_grubby_kernel_str")
|
||||
if [[ -z $_kernel_path ]]; then
|
||||
derror "kernel $_release doesn't exist"
|
||||
return 1
|
||||
fi
|
||||
echo -n "$_kernel_path"
|
||||
}
|
||||
|
||||
_get_current_running_kernel_path()
|
||||
{
|
||||
local _release _path
|
||||
|
||||
_release=$(uname -r)
|
||||
if _path=$(_find_kernel_path_by_release "$_release"); then
|
||||
echo -n "$_path"
|
||||
else
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
_update_grub()
|
||||
{
|
||||
local _kernel_path=$1 _crashkernel=$2 _dump_mode=$3 _fadump_val=$4
|
||||
|
||||
if is_atomic; then
|
||||
if rpm-ostree kargs | grep -q "crashkernel="; then
|
||||
rpm-ostree --replace="crashkernel=$crashkernel_default"
|
||||
rpm-ostree kargs --replace="crashkernel=$_crashkernel"
|
||||
else
|
||||
rpm-ostree --append="crashkernel=$crashkernel_default"
|
||||
rpm-ostree kargs --append="crashkernel=$_crashkernel"
|
||||
fi
|
||||
else
|
||||
entry=$(grubby --info ALL | grep "^kernel=.*$kernel")
|
||||
entry=${entry#kernel=}
|
||||
entry=${entry#\"}
|
||||
entry=${entry%\"}
|
||||
[[ -f /etc/zipl.conf ]] && zipl_arg="--zipl"
|
||||
grubby --args "crashkernel=$_crashkernel" --update-kernel "$_kernel_path" $zipl_arg
|
||||
if [[ $_dump_mode == kdump ]]; then
|
||||
grubby --remove-args="fadump" --update-kernel "$_kernel_path"
|
||||
else
|
||||
grubby --args="fadump=$_fadump_val" --update-kernel "$_kernel_path"
|
||||
fi
|
||||
fi
|
||||
[[ $zipl_arg ]] && zipl > /dev/null
|
||||
}
|
||||
|
||||
if [[ -f $grub_etc_default ]]; then
|
||||
sed -i -e "s/^\(GRUB_CMDLINE_LINUX=.*\)crashkernel=[^\ \"]*\([\ \"].*\)$/\1$crashkernel_default\2/" "$grub_etc_default"
|
||||
_valid_grubby_kernel_path()
|
||||
{
|
||||
[[ -n "$1" ]] && grubby --info="$1" > /dev/null 2>&1
|
||||
}
|
||||
|
||||
# return all the kernel paths given a grubby kernel-path
|
||||
#
|
||||
# $1: kernel path accepted by grubby, e.g. DEFAULT, ALL,
|
||||
# /boot/vmlinuz-`uname -r`
|
||||
# return: kernel paths separated by space
|
||||
_get_all_kernels_from_grubby()
|
||||
{
|
||||
local _kernels _line _kernel_path _grubby_kernel_path=$1
|
||||
|
||||
for _line in $(grubby --info "$_grubby_kernel_path" | grep "^kernel="); do
|
||||
_kernel_path=$(_filter_grubby_kernel_str "$_line")
|
||||
_kernels="$_kernels $_kernel_path"
|
||||
done
|
||||
echo -n "$_kernels"
|
||||
}
|
||||
|
||||
GRUB_ETC_DEFAULT="/etc/default/grub"
|
||||
# modify the kernel command line parameter in default grub conf
|
||||
#
|
||||
# $1: the name of the kernel command line parameter
|
||||
# $2: new value. If empty, the parameter would be removed
|
||||
_update_kernel_cmdline_in_grub_etc_default()
|
||||
{
|
||||
local _para=$1 _val=$2 _para_val _regex
|
||||
|
||||
if [[ -n $_val ]]; then
|
||||
_para_val="$_para=$_val"
|
||||
fi
|
||||
|
||||
_regex='^(GRUB_CMDLINE_LINUX=.*)([[:space:]"])'"$_para"'=[^[:space:]"]*(.*)$'
|
||||
if grep -q -E "$_regex" "$GRUB_ETC_DEFAULT"; then
|
||||
sed -i -E 's/'"$_regex"'/\1\2'"$_para_val"'\3/' "$GRUB_ETC_DEFAULT"
|
||||
elif [[ -n $_para_val ]]; then
|
||||
# If the kernel parameter doesn't exist, put it in the first
|
||||
sed -i -E 's/^(GRUB_CMDLINE_LINUX=")/\1'"$_para_val"' /' "$GRUB_ETC_DEFAULT"
|
||||
fi
|
||||
}
|
||||
|
||||
reset_crashkernel()
|
||||
{
|
||||
local _opt _val _dump_mode _fadump_val _reboot _grubby_kernel_path _kernel _kernels
|
||||
local _old_crashkernel _new_crashkernel _new_dump_mode _crashkernel_changed
|
||||
local _new_fadump_val _old_fadump_val _what_is_updated
|
||||
|
||||
for _opt in "$@"; do
|
||||
case "$_opt" in
|
||||
--fadump=*)
|
||||
_val=${_opt#*=}
|
||||
if _dump_mode=$(get_dump_mode_by_fadump_val $_val); then
|
||||
_fadump_val=$_val
|
||||
else
|
||||
derror "failed to determine dump mode"
|
||||
exit
|
||||
fi
|
||||
;;
|
||||
--kernel=*)
|
||||
_val=${_opt#*=}
|
||||
if ! _valid_grubby_kernel_path $_val; then
|
||||
derror "Invalid $_opt, please specify a valid kernel path, ALL or DEFAULT"
|
||||
exit
|
||||
fi
|
||||
_grubby_kernel_path=$_val
|
||||
;;
|
||||
--reboot)
|
||||
_reboot=yes
|
||||
;;
|
||||
*)
|
||||
derror "$_opt not recognized"
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
done
|
||||
|
||||
# 1. CoreOS uses "rpm-ostree kargs" instead of grubby to manage kernel command
|
||||
# line. --kernel=ALL doesn't make sense for CoreOS.
|
||||
# 2. CoreOS doesn't support POWER so the dump mode is always kdump.
|
||||
# 3. "rpm-ostree kargs" would prompt the user to reboot the system after
|
||||
# modifying the kernel command line so there is no need for kexec-tools
|
||||
# to repeat it.
|
||||
if is_atomic; then
|
||||
_old_crashkernel=$(rpm-ostree kargs | sed -n -E 's/.*(^|\s)crashkernel=(\S*).*/\2/p')
|
||||
_new_dump_mode=kdump
|
||||
_new_crashkernel=$(kdump_get_arch_recommend_crashkernel "$_new_dump_mode")
|
||||
if [[ $_old_crashkernel != "$_new_crashkernel" ]]; then
|
||||
_update_grub "" "$_new_crashkernel" "$_new_dump_mode" ""
|
||||
if [[ $_reboot == yes ]]; then
|
||||
systemctl reboot
|
||||
fi
|
||||
fi
|
||||
return
|
||||
fi
|
||||
|
||||
# For non-ppc64le systems, the dump mode is always kdump since only ppc64le
|
||||
# has FADump.
|
||||
if [[ -z $_dump_mode && $(uname -m) != ppc64le ]]; then
|
||||
_dump_mode=kdump
|
||||
_fadump_val=off
|
||||
fi
|
||||
|
||||
# If the dump mode is determined, we can also know the default crashkernel value
|
||||
if [[ -n $_dump_mode ]]; then
|
||||
_crashkernel=$(kdump_get_arch_recommend_crashkernel "$_dump_mode")
|
||||
fi
|
||||
|
||||
# If --kernel-path=ALL, update GRUB_CMDLINE_LINUX in /etc/default/grub.
|
||||
#
|
||||
# An exception case is when the ppc64le user doesn't specify the fadump value.
|
||||
# In this case, the dump mode would be determined by parsing the kernel
|
||||
# command line of the kernel(s) to be updated thus don't update GRUB_CMDLINE_LINUX.
|
||||
#
|
||||
# The following code has been simplified because of what has been done early,
|
||||
# - set the dump mode as kdump for non-ppc64le cases
|
||||
# - retrieved the default crashkernel value for given dump mode
|
||||
if [[ $_grubby_kernel_path == ALL && -n $_dump_mode ]]; then
|
||||
_update_kernel_cmdline_in_grub_etc_default crashkernel "$_crashkernel"
|
||||
# remove the fadump if fadump is disabled
|
||||
[[ $_fadump_val == off ]] && _fadump_val=""
|
||||
_update_kernel_cmdline_in_grub_etc_default fadump "$_fadump_val"
|
||||
fi
|
||||
|
||||
# If kernel-path not specified, either
|
||||
# - use KDUMP_KERNELVER if it's defined
|
||||
# - use current running kernel
|
||||
if [[ -z $_grubby_kernel_path ]]; then
|
||||
if [[ -z $KDUMP_KERNELVER ]] ||
|
||||
! _kernel_path=$(_find_kernel_path_by_release "$KDUMP_KERNELVER"); then
|
||||
if ! _kernel_path=$(_get_current_running_kernel_path); then
|
||||
derror "no running kernel found"
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
_kernels=$_kernel_path
|
||||
else
|
||||
_kernels=$(_get_all_kernels_from_grubby "$_grubby_kernel_path")
|
||||
fi
|
||||
|
||||
for _kernel in $_kernels; do
|
||||
if [[ -z $_dump_mode ]]; then
|
||||
_new_dump_mode=$(get_dump_mode_by_kernel "$_kernel")
|
||||
_new_crashkernel=$(kdump_get_arch_recommend_crashkernel "$_new_dump_mode")
|
||||
_new_fadump_val=$(get_grub_kernel_boot_parameter "$_kernel" fadump)
|
||||
else
|
||||
_new_dump_mode=$_dump_mode
|
||||
_new_crashkernel=$_crashkernel
|
||||
_new_fadump_val=$_fadump_val
|
||||
fi
|
||||
|
||||
[[ -f /etc/zipl.conf ]] && zipl_arg="--zipl"
|
||||
grubby --args "$crashkernel_default" --update-kernel "$entry" $zipl_arg
|
||||
[[ $zipl_arg ]] && zipl > /dev/null
|
||||
_old_crashkernel=$(get_grub_kernel_boot_parameter "$_kernel" crashkernel)
|
||||
_old_fadump_val=$(get_grub_kernel_boot_parameter "$_kernel" fadump)
|
||||
if [[ $_old_crashkernel != "$_new_crashkernel" || $_old_fadump_val != "$_new_fadump_val" ]]; then
|
||||
_update_grub "$_kernel" "$_new_crashkernel" "$_new_dump_mode" "$_new_fadump_val"
|
||||
if [[ $_reboot != yes ]]; then
|
||||
if [[ $_old_crashkernel != "$_new_crashkernel" ]]; then
|
||||
_what_is_updated="Updated crashkernel=$_new_crashkernel"
|
||||
else
|
||||
# This case happens only when switching between fadump=on and fadump=nocma
|
||||
_what_is_updated="Updated fadump=$_new_fadump_val"
|
||||
fi
|
||||
dwarn "$_what_is_updated for kernel=$_kernel. Please reboot the system for the change to take effect."
|
||||
fi
|
||||
_crashkernel_changed=yes
|
||||
fi
|
||||
done
|
||||
|
||||
if [[ $_reboot == yes && $_crashkernel_changed == yes ]]; then
|
||||
reboot
|
||||
fi
|
||||
}
|
||||
|
||||
# shellcheck disable=SC2154 # false positive when dereferencing an array
|
||||
reset_crashkernel_after_update()
|
||||
{
|
||||
local _kernel _crashkernel _dump_mode _fadump_val _old_default_crashkernel _new_default_crashkernel
|
||||
declare -A _crashkernel_vals
|
||||
|
||||
_crashkernel_vals[old_kdump]=$(cat /tmp/old_default_crashkernel 2> /dev/null)
|
||||
_crashkernel_vals[old_fadump]=$(cat /tmp/old_default_crashkernel_fadump 2> /dev/null)
|
||||
_crashkernel_vals[new_kdump]=$(get_default_crashkernel kdump)
|
||||
_crashkernel_vals[new_fadump]=$(get_default_crashkernel fadump)
|
||||
|
||||
for _kernel in $(_get_all_kernels_from_grubby ALL); do
|
||||
_crashkernel=$(get_grub_kernel_boot_parameter "$_kernel" crashkernel)
|
||||
if [[ $_crashkernel == auto ]]; then
|
||||
reset_crashkernel "--kernel=$_kernel"
|
||||
elif [[ -n $_crashkernel ]]; then
|
||||
_dump_mode=$(get_dump_mode_by_kernel "$_kernel")
|
||||
_old_default_crashkernel=${_crashkernel_vals[old_${_dump_mode}]}
|
||||
_new_default_crashkernel=${_crashkernel_vals[new_${_dump_mode}]}
|
||||
if [[ $_crashkernel == "$_old_default_crashkernel" ]] &&
|
||||
[[ $_new_default_crashkernel != "$_old_default_crashkernel" ]]; then
|
||||
_fadump_val=$(get_grub_kernel_boot_parameter "$_kernel" fadump)
|
||||
if _update_grub "$_kernel" "$_new_default_crashkernel" "$_dump_mode" "$_fadump_val"; then
|
||||
echo "For kernel=$_kernel, crashkernel=$_new_default_crashkernel now."
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
# read the value of an environ variable from given environ file path
|
||||
#
|
||||
# The environment variable entries in /proc/[pid]/environ are separated
|
||||
# by null bytes instead of by spaces.
|
||||
#
|
||||
# $1: environment variable
|
||||
# $2: environ file path
|
||||
read_proc_environ_var()
|
||||
{
|
||||
local _var=$1 _environ_path=$2
|
||||
sed -n -E "s/.*(^|\x00)${_var}=([^\x00]*).*/\2/p" < "$_environ_path"
|
||||
}
|
||||
|
||||
_OSBUILD_ENVIRON_PATH='/proc/1/environ'
|
||||
_is_osbuild()
|
||||
{
|
||||
[[ $(read_proc_environ_var container "$_OSBUILD_ENVIRON_PATH") == bwrap-osbuild ]]
|
||||
}
|
||||
|
||||
reset_crashkernel_for_installed_kernel()
|
||||
{
|
||||
local _installed_kernel _running_kernel _crashkernel _crashkernel_running
|
||||
local _dump_mode_running _fadump_val_running
|
||||
|
||||
if ! _installed_kernel=$(_find_kernel_path_by_release "$1"); then
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if _is_osbuild; then
|
||||
if ! grep -qs crashkernel= /etc/kernel/cmdline; then
|
||||
reset_crashkernel "--kernel=$_installed_kernel"
|
||||
fi
|
||||
return
|
||||
fi
|
||||
|
||||
if ! _running_kernel=$(_get_current_running_kernel_path); then
|
||||
derror "Couldn't find current running kernel"
|
||||
exit
|
||||
fi
|
||||
|
||||
_crashkernel=$(get_grub_kernel_boot_parameter "$_installed_kernel" crashkernel)
|
||||
_crashkernel_running=$(get_grub_kernel_boot_parameter "$_running_kernel" crashkernel)
|
||||
_dump_mode_running=$(get_dump_mode_by_kernel "$_running_kernel")
|
||||
_fadump_val_running=$(get_grub_kernel_boot_parameter "$_kernel" fadump)
|
||||
|
||||
if [[ $_crashkernel != "$_crashkernel_running" ]]; then
|
||||
if _update_grub "$_installed_kernel" "$_crashkernel_running" "$_dump_mode_running" "$_fadump_val_running"; then
|
||||
echo "kexec-tools has reset $_installed_kernel to use the new default crashkernel value $_crashkernel_running"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
@ -1392,8 +1717,22 @@ main()
|
||||
estimate)
|
||||
do_estimate
|
||||
;;
|
||||
get-default-crashkernel)
|
||||
get_default_crashkernel "$2"
|
||||
;;
|
||||
reset-crashkernel)
|
||||
reset_crashkernel "$2"
|
||||
shift
|
||||
reset_crashkernel "$@"
|
||||
;;
|
||||
reset-crashkernel-after-update)
|
||||
if [[ $(kdump_get_conf_val auto_reset_crashkernel) != no ]]; then
|
||||
reset_crashkernel_after_update
|
||||
fi
|
||||
;;
|
||||
reset-crashkernel-for-installed_kernel)
|
||||
if [[ $(kdump_get_conf_val auto_reset_crashkernel) != no ]]; then
|
||||
reset_crashkernel_for_installed_kernel "$2"
|
||||
fi
|
||||
;;
|
||||
*)
|
||||
dinfo $"Usage: $0 {estimate|start|stop|status|restart|reload|rebuild|reset-crashkernel|propagate|showmem}"
|
||||
|
||||
@ -50,14 +50,19 @@ Estimate a suitable crashkernel value for current machine. This is a
|
||||
best-effort estimate. It will print a recommanded crashkernel value
|
||||
based on current kdump setup, and list some details of memory usage.
|
||||
.TP
|
||||
.I reset-crashkernel [KERNEL]
|
||||
Reset crashkernel value to default value. kdumpctl will try to read
|
||||
from /usr/lib/modules/<KERNEL>/crashkernel.default and reset specified
|
||||
kernel's crashkernel cmdline value. If no kernel is
|
||||
specified, will reset current running kernel's crashkernel value.
|
||||
If /usr/lib/modules/<KERNEL>/crashkernel.default doesn't exist, will
|
||||
simply exit return 1.
|
||||
.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 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 additonal [--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),
|
||||
|
||||
@ -0,0 +1,95 @@
|
||||
commit 186e7b0752d8fce1618fa37519671c834c46340e
|
||||
Author: Alexander Egorenkov <egorenar@linux.ibm.com>
|
||||
Date: Wed Dec 15 18:48:53 2021 +0100
|
||||
|
||||
s390: handle R_390_PLT32DBL reloc entries in machine_apply_elf_rel()
|
||||
|
||||
Starting with gcc 11.3, the C compiler will generate PLT-relative function
|
||||
calls even if they are local and do not require it. Later on during linking,
|
||||
the linker will replace all PLT-relative calls to local functions with
|
||||
PC-relative ones. Unfortunately, the purgatory code of kexec/kdump is
|
||||
not being linked as a regular executable or shared library would have been,
|
||||
and therefore, all PLT-relative addresses remain in the generated purgatory
|
||||
object code unresolved. This in turn lets kexec-tools fail with
|
||||
"Unknown rela relocation: 0x14 0x73c0901c" for such relocation types.
|
||||
|
||||
Furthermore, the clang C compiler has always behaved like described above
|
||||
and this commit should fix the purgatory code built with the latter.
|
||||
|
||||
Because the purgatory code is no regular executable or shared library,
|
||||
contains only calls to local functions and has no PLT, all R_390_PLT32DBL
|
||||
relocation entries can be resolved just like a R_390_PC32DBL one.
|
||||
|
||||
* https://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_zSeries/x1633.html#AEN1699
|
||||
|
||||
Relocation entries of purgatory code generated with gcc 11.3
|
||||
------------------------------------------------------------
|
||||
|
||||
$ readelf -r purgatory/purgatory.o
|
||||
|
||||
Relocation section '.rela.text' at offset 0x6e8 contains 27 entries:
|
||||
Offset Info Type Sym. Value Sym. Name + Addend
|
||||
00000000000c 000300000013 R_390_PC32DBL 0000000000000000 .data + 2
|
||||
00000000001a 001000000014 R_390_PLT32DBL 0000000000000000 sha256_starts + 2
|
||||
000000000030 001100000014 R_390_PLT32DBL 0000000000000000 sha256_update + 2
|
||||
000000000046 001200000014 R_390_PLT32DBL 0000000000000000 sha256_finish + 2
|
||||
000000000050 000300000013 R_390_PC32DBL 0000000000000000 .data + 102
|
||||
00000000005a 001300000014 R_390_PLT32DBL 0000000000000000 memcmp + 2
|
||||
...
|
||||
000000000118 001600000014 R_390_PLT32DBL 0000000000000000 setup_arch + 2
|
||||
00000000011e 000300000013 R_390_PC32DBL 0000000000000000 .data + 2
|
||||
00000000012c 000f00000014 R_390_PLT32DBL 0000000000000000 verify_sha256_digest + 2
|
||||
000000000142 001700000014 R_390_PLT32DBL 0000000000000000
|
||||
post_verification[...] + 2
|
||||
|
||||
Relocation entries of purgatory code generated with gcc 11.2
|
||||
------------------------------------------------------------
|
||||
|
||||
$ readelf -r purgatory/purgatory.o
|
||||
|
||||
Relocation section '.rela.text' at offset 0x6e8 contains 27 entries:
|
||||
Offset Info Type Sym. Value Sym. Name + Addend
|
||||
00000000000e 000300000013 R_390_PC32DBL 0000000000000000 .data + 2
|
||||
00000000001c 001000000013 R_390_PC32DBL 0000000000000000 sha256_starts + 2
|
||||
000000000036 001100000013 R_390_PC32DBL 0000000000000000 sha256_update + 2
|
||||
000000000048 001200000013 R_390_PC32DBL 0000000000000000 sha256_finish + 2
|
||||
000000000052 000300000013 R_390_PC32DBL 0000000000000000 .data + 102
|
||||
00000000005c 001300000013 R_390_PC32DBL 0000000000000000 memcmp + 2
|
||||
...
|
||||
00000000011a 001600000013 R_390_PC32DBL 0000000000000000 setup_arch + 2
|
||||
000000000120 000300000013 R_390_PC32DBL 0000000000000000 .data + 122
|
||||
000000000130 000f00000013 R_390_PC32DBL 0000000000000000 verify_sha256_digest + 2
|
||||
000000000146 001700000013 R_390_PC32DBL 0000000000000000 post_verification[...] + 2
|
||||
|
||||
Corresponding s390 kernel discussion:
|
||||
* https://lore.kernel.org/linux-s390/20211208105801.188140-1-egorenar@linux.ibm.com/T/#u
|
||||
|
||||
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
|
||||
Reported-by: Tao Liu <ltao@redhat.com>
|
||||
Suggested-by: Philipp Rudo <prudo@redhat.com>
|
||||
Reviewed-by: Philipp Rudo <prudo@redhat.com>
|
||||
[hca@linux.ibm.com: changed commit message as requested by Philipp Rudo]
|
||||
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
||||
Signed-off-by: Simon Horman <horms@verge.net.au>
|
||||
|
||||
diff --git a/kexec/arch/s390/kexec-elf-rel-s390.c b/kexec/arch/s390/kexec-elf-rel-s390.c
|
||||
index a5e1b73455785ae3bc3aa72b3beee13ae202e82f..91ba86a9991dad4271b834fc3b24861c40309e52 100644
|
||||
--- a/kexec/arch/s390/kexec-elf-rel-s390.c
|
||||
+++ b/kexec/arch/s390/kexec-elf-rel-s390.c
|
||||
@@ -56,6 +56,7 @@ void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
|
||||
case R_390_PC16: /* PC relative 16 bit. */
|
||||
case R_390_PC16DBL: /* PC relative 16 bit shifted by 1. */
|
||||
case R_390_PC32DBL: /* PC relative 32 bit shifted by 1. */
|
||||
+ case R_390_PLT32DBL: /* 32 bit PC rel. PLT shifted by 1. */
|
||||
case R_390_PC32: /* PC relative 32 bit. */
|
||||
case R_390_PC64: /* PC relative 64 bit. */
|
||||
val -= address;
|
||||
@@ -63,7 +64,7 @@ void machine_apply_elf_rel(struct mem_ehdr *UNUSED(ehdr),
|
||||
*(unsigned short *) loc = val;
|
||||
else if (r_type == R_390_PC16DBL)
|
||||
*(unsigned short *) loc = val >> 1;
|
||||
- else if (r_type == R_390_PC32DBL)
|
||||
+ else if (r_type == R_390_PC32DBL || r_type == R_390_PLT32DBL)
|
||||
*(unsigned int *) loc = val >> 1;
|
||||
else if (r_type == R_390_PC32)
|
||||
*(unsigned int *) loc = val;
|
||||
@ -431,6 +431,15 @@ done <<< "$(kdump_read_conf)"
|
||||
|
||||
handle_default_dump_target
|
||||
|
||||
if ! have_compression_in_dracut_args; then
|
||||
# Here zstd is set as the default compression method. If squash module
|
||||
# is available for dracut, libzstd will be used by mksquashfs. If
|
||||
# squash module is unavailable, command zstd will be used instead.
|
||||
if is_squash_available || 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
|
||||
@ -448,6 +457,11 @@ if ! is_fadump_capable; then
|
||||
add_dracut_arg "--no-hostonly-default-device"
|
||||
fi
|
||||
|
||||
# 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=$?
|
||||
|
||||
@ -62,6 +62,13 @@ if is_squash_available; then
|
||||
_dracut_isolate_args+=(--add squash)
|
||||
fi
|
||||
|
||||
# Same as setting zstd in mkdumprd
|
||||
if ! have_compression_in_dracut_args; then
|
||||
if is_squash_available || is_zstd_command_available; then
|
||||
_dracut_isolate_args+=(--compress zstd)
|
||||
fi
|
||||
fi
|
||||
|
||||
if ! dracut --force --quiet "${_dracut_isolate_args[@]}" "$@" "$TARGET_INITRD"; then
|
||||
perror_exit "mkfadumprd: failed to setup '$TARGET_INITRD' with dump capture capability"
|
||||
fi
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
|
||||
Name: kexec-tools
|
||||
Version: 2.0.23
|
||||
Release: 3%{?dist}
|
||||
Release: 8%{?dist}
|
||||
License: GPLv2
|
||||
Summary: The kexec/kdump userspace component
|
||||
|
||||
@ -71,7 +71,9 @@ Requires: dracut >= 050
|
||||
Requires: dracut-network >= 050
|
||||
Requires: dracut-squash >= 050
|
||||
Requires: ethtool
|
||||
Recommends: zstd
|
||||
Recommends: grubby
|
||||
Recommends: hostname
|
||||
BuildRequires: make
|
||||
BuildRequires: zlib-devel elfutils-devel glib2-devel bzip2-devel ncurses-devel bison flex lzo-devel snappy-devel libzstd-devel
|
||||
BuildRequires: pkgconfig intltool gettext
|
||||
@ -109,6 +111,7 @@ Requires: systemd-udev%{?_isa}
|
||||
#
|
||||
# Patches 601 onward are generic patches
|
||||
#
|
||||
Patch601: ./kexec-tools-2.0.22-01-s390_handle_R_390_PLT32DBL_reloc_entries_in_machine_apply_elf_rel_.patch
|
||||
|
||||
%description
|
||||
kexec-tools provides /sbin/kexec binary that facilitates a new
|
||||
@ -124,6 +127,8 @@ mkdir -p -m755 kcp
|
||||
tar -z -x -v -f %{SOURCE9}
|
||||
tar -z -x -v -f %{SOURCE19}
|
||||
|
||||
%patch601 -p1
|
||||
|
||||
%ifarch ppc
|
||||
%define archdef ARCH=ppc
|
||||
%endif
|
||||
@ -259,6 +264,15 @@ chmod 755 $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99zz-fadumpini
|
||||
mkdir -p $RPM_BUILD_ROOT/%{dracutlibdir}/modules.d/
|
||||
mv $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/* $RPM_BUILD_ROOT/%{dracutlibdir}/modules.d/
|
||||
|
||||
%pre
|
||||
# save the old default crashkernel values to /tmp/ when upgrading the package
|
||||
if ! grep -qs "ostree" /proc/cmdline && [ $1 == 2 ] && grep -q get-default-crashkernel /usr/bin/kdumpctl; then
|
||||
kdumpctl get-default-crashkernel kdump > /tmp/old_default_crashkernel 2>/dev/null
|
||||
%ifarch ppc64 ppc64le
|
||||
kdumpctl get-default-crashkernel fadump > /tmp/old_default_crashkernel_fadump 2>/dev/null
|
||||
%endif
|
||||
fi
|
||||
|
||||
%post
|
||||
# Initial installation
|
||||
%systemd_post kdump.service
|
||||
@ -324,6 +338,21 @@ do
|
||||
fi
|
||||
done
|
||||
|
||||
%posttrans
|
||||
# try to reset kernel crashkernel value to new default value when upgrading
|
||||
# the package
|
||||
if ! grep -qs "ostree" /proc/cmdline && [ $1 == 1 ]; then
|
||||
kdumpctl reset-crashkernel-after-update
|
||||
rm /tmp/old_default_crashkernel 2>/dev/null
|
||||
%ifarch ppc64 ppc64le
|
||||
rm /tmp/old_default_crashkernel_fadump 2>/dev/null
|
||||
%endif
|
||||
# dnf would complain about the exit code not being 0. To keep it happy,
|
||||
# always return 0
|
||||
:
|
||||
fi
|
||||
|
||||
|
||||
%files
|
||||
/usr/sbin/kexec
|
||||
%ifarch %{ix86} x86_64 ppc64 s390x ppc64le aarch64
|
||||
@ -378,6 +407,48 @@ done
|
||||
%endif
|
||||
|
||||
%changelog
|
||||
* Mon Feb 21 2022 Tao Liu <ltao@redhat.com> - 2.0.23-8
|
||||
- update kernel crashkernel in posttrans RPM scriptlet when updating kexec-tools
|
||||
|
||||
* Mon Feb 14 2022 Tao Liu <ltao@redhat.com> - 2.0.23-7
|
||||
- fix incorrect usage of _get_all_kernels_from_grubby
|
||||
- fix the mistake of swapping function parameters of read_proc_environ_var
|
||||
|
||||
* Wed Jan 26 2022 Tao Liu <ltao@redhat.com> - 2.0.23-6
|
||||
- Revert "Remove trace_buf_size and trace_event from the kernel bootparameters of the kdump kernel"
|
||||
- fix broken kdump_get_arch_recommend_size
|
||||
- remove the upper bound of 102400T for the range in default crashkernel
|
||||
- fix the error of parsing the container environ variable for osbuild
|
||||
- mkdumprd (RHEL-only): add nvme module by force
|
||||
- Remove dropped patches
|
||||
- s390: handle R_390_PLT32DBL reloc entries in machine_apply_elf_rel()
|
||||
- spec: add hostname.rpm into Recommends list
|
||||
- move variable FENCE_KDUMP_SEND from kdump-lib.sh to kdump-lib-initramfs.sh
|
||||
|
||||
* Tue Jan 11 2022 Tao Liu <ltao@redhat.com> - 2.0.23-5
|
||||
- Set zstd as recommented for kexec-tools
|
||||
- fix "kdump: Invalid kdump config option auto_reset_crashkernel" error
|
||||
- use grep -s to suppress error messages about nonexistent or unreadable files
|
||||
|
||||
* Thu Jan 6 2022 Tao Liu <ltao@redhat.com> - 2.0.23-4
|
||||
- Set zstd as the default compression method for kdump initrd
|
||||
- kdump-lib.sh: Escape '|' for 'failure_action|default' in is_dump_to_rootfs
|
||||
- dracut-early-kdump-module-setup.sh: install xargs and kdump-lib-initramfs.sh
|
||||
- update crashkernel-howto
|
||||
- set up kernel crashkernel for osbuild in kernel hook
|
||||
- reset kernel crashkernel for the special case where the kernel is updated right after kexec-tools
|
||||
- try to reset kernel crashkernel when kexec-tools updates the default crashkernel value
|
||||
- introduce the auto_reset_crashkernel option to kdump.conf
|
||||
- rewrite reset_crashkernel to support fadump and to used by RPM scriptlet
|
||||
- fix incorrect usage of rpm-ostree to update kernel command line parameters
|
||||
- add helper functions to get kernel path by kernel release and the path of current running kernel
|
||||
- add helper functions to get dump mode
|
||||
- add a helper function to read kernel cmdline parameter from grubby --info
|
||||
- provide kdumpctl get-default-crashkernel for kdump_anaconda_addon and RPM scriptlet
|
||||
- factor out kdump_get_arch_recommend_crashkernel
|
||||
- update default crashkernel value
|
||||
- ppc64/ppc64le: drop cpu online rule in 40-redhat.rules in kdump initramfs
|
||||
|
||||
* Wed Dec 8 2021 Tao Liu <ltao@redhat.com> - 2.0.23-3
|
||||
- Update eppic to latest upstream snapshot
|
||||
- Update crashkernel-howto.txt
|
||||
|
||||
Loading…
Reference in New Issue
Block a user