Compare commits
No commits in common. "a9" and "c8" have entirely different histories.
6
.gitignore
vendored
6
.gitignore
vendored
@ -1,3 +1,3 @@
|
||||
SOURCES/eppic-e8844d3.tar.gz
|
||||
SOURCES/kexec-tools-2.0.27.tar.xz
|
||||
SOURCES/makedumpfile-1.7.4.tar.gz
|
||||
SOURCES/1.7.2.tar.gz
|
||||
SOURCES/eppic_050615.tar.gz
|
||||
SOURCES/kexec-tools-2.0.26.tar.xz
|
||||
|
||||
@ -1,3 +1,3 @@
|
||||
80ac3f5e77d3c79883edadf14428734db4720009 SOURCES/eppic-e8844d3.tar.gz
|
||||
ed15f191adee22ab0721ba62af1cae67eb981670 SOURCES/kexec-tools-2.0.27.tar.xz
|
||||
98cae2b1062871905795918c32b6d46ccd115074 SOURCES/makedumpfile-1.7.4.tar.gz
|
||||
24bce02cd42cdbb960ada4d9e733355582e35784 SOURCES/1.7.2.tar.gz
|
||||
a096c8e0892b559f40b01916aae240652f75b68a SOURCES/eppic_050615.tar.gz
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||||
27cea5d032ec1e93506b8110222420abf754df2d SOURCES/kexec-tools-2.0.26.tar.xz
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|
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@ -1,31 +0,0 @@
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#!/usr/bin/bash
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COMMAND="$1"
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KERNEL_VERSION="$2"
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if ! [[ ${KERNEL_INSTALL_MACHINE_ID-x} ]]; then
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exit 0
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fi
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# Currently, fadump is supported only in environments with
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# writable /boot directory.
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if [[ ! -w "/boot" ]]; then
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exit 0
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fi
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FADUMP_INITRD="/boot/.initramfs-${KERNEL_VERSION}.img.default"
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FADUMP_INITRD_CHECKSUM="$FADUMP_INITRD.checksum"
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ret=0
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case "$COMMAND" in
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add)
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# Do nothing, fadump initramfs is strictly host only
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# and managed by kdump service
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;;
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remove)
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rm -f -- "$FADUMP_INITRD"
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rm -f -- "$FADUMP_INITRD_CHECKSUM"
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ret=$?
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;;
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esac
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exit $ret
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@ -1,13 +0,0 @@
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#!/usr/bin/bash
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COMMAND="$1"
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KERNEL_VERSION="$2"
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KDUMP_INITRD_DIR_ABS="$3"
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KERNEL_IMAGE="$4"
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case "$COMMAND" in
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add)
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kdumpctl _reset-crashkernel-for-installed_kernel "$KERNEL_VERSION"
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exit 0
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;;
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esac
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@ -17,6 +17,6 @@ GOTO="kdump_reload_end"
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LABEL="kdump_reload_cpu"
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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'"
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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'"
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LABEL="kdump_reload_end"
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@ -1,120 +0,0 @@
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Introduction
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============
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This document describes features the kexec-tools package provides for setting
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and estimating the crashkernel value.
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Kdump lives in a pre-reserved chunk of memory, and the size of the reserved
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memory is specified by the `crashkernel=` kernel parameter. It's hard to
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estimate an accurate `crashkernel=` value, so it's always recommended to test
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kdump after you updated the `crashkernel=` value or changed the dump target.
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Default crashkernel value
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=========================
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Latest kexec-tools provides "kdumpctl get-default-crashkernel" to retrieve
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the default crashkernel value,
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$ echo $(kdumpctl get-default-crashkernel)
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1G-4G:192M,4G-64G:256M,64G-:512M
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It will be taken as the default value of 'crashkernel=', you can use
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this value as a reference for setting crashkernel value manually.
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New installed system
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||||
====================
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Anaconda is the OS installer which sets all the kernel boot cmdline on a newly
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installed system. If kdump is enabled during Anaconda installation, Anaconda
|
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will use the default crashkernel value as the default `crashkernel=` value on
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the newly installed system.
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Users can override the value during Anaconda installation manually.
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Auto update of crashkernel boot parameter
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=========================================
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A new release of kexec-tools could update the default crashkernel value. By
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default, kexec-tools would reset crashkernel to the new default value if it
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detects the old default crashkernel value is used by installed kernels. If you
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don't want kexec-tools to update the old default crashkernel to the new default
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crashkernel, you can change auto_reset_crashkernel to no in kdump.conf.
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Supported Bootloaders
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||||
---------------------
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This auto update only works with GRUB2 and ZIPL, as kexec-tools heavily depends
|
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on `grubby`. If other boot loaders are used, the user will have to update the
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`crashkernel=` value manually.
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Reset crashkernel to default value
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==================================
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kexec-tools only perform the auto update of crashkernel value when it can
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confirm the boot kernel's crashkernel value is using its corresponding default
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value and auto_reset_crashkernel=yes in kdump.conf. In other cases, the user
|
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can reset the crashkernel value by themselves.
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|
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Reset using kdumpctl
|
||||
--------------------
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To make it easier to reset the `crashkernel=` kernel cmdline to this default
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value properly, `kdumpctl` also provides a sub-command:
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`kdumpctl reset-crashkernel [--kernel=path_to_kernel] [--reboot]`
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This command will reset the bootloader's kernel cmdline to the default value.
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It will also update bootloader config if the bootloader has a standalone config
|
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file. User will have to reboot the machine after this command to make it take
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effect if --reboot is not specified. For more details, please refer to the
|
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reset-crashkernel command in `man kdumpctl`.
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Reset manually
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--------------
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To reset the crashkernel value manually, it's recommended to use utils like
|
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`grubby`. A one liner script for resetting `crashkernel=` value of all installed
|
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kernels to the default value is:
|
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grubby --update-kernel ALL --args "crashkernel=$(kdumpctl get-default-crashkernel)"
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NOTE: On s390x you also need to run zipl for the change to take effect.
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Estimate crashkernel
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||||
====================
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||||
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||||
The best way to estimate a usable crashkernel value is by testing kdump
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||||
manually. And you can set crashkernel to a large value, then adjust the
|
||||
crashkernel value to an acceptable value gradually.
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||||
`kdumpctl` also provides a sub-command for doing rough estimating without
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triggering kdump:
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||||
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||||
`kdumpctl estimate`
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||||
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||||
The output will be like this:
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||||
|
||||
```
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Encrypted kdump target requires extra memory, assuming using the keyslot with minimum memory requirement
|
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Reserved crashkernel: 256M
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Recommended crashkernel: 655M
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Kernel image size: 47M
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Kernel modules size: 12M
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Initramfs size: 19M
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Runtime reservation: 64M
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||||
LUKS required size: 512M
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Large modules:
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||||
xfs: 1892352
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||||
nouveau: 2318336
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||||
WARNING: Current crashkernel size is lower than recommended size 655M.
|
||||
```
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||||
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||||
It will generate a summary report about the estimated memory consumption
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of each component of kdump. The value may not be accurate enough, but
|
||||
would be a good start for finding a suitable crashkernel value.
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||||
@ -6,8 +6,9 @@ KDUMP_KERNEL=""
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KDUMP_INITRD=""
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check() {
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if [[ ! -f /etc/sysconfig/kdump ]] || [[ ! -f /lib/kdump/kdump-lib.sh ]] \
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||||
|| [[ -n ${IN_KDUMP} ]]; then
|
||||
if [ ! -f /etc/sysconfig/kdump ] || [ ! -f /lib/kdump/kdump-lib.sh ]\
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||||
|| [ -n "${IN_KDUMP}" ]
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||||
then
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||||
return 1
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||||
fi
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||||
return 255
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||||
@ -24,7 +25,7 @@ prepare_kernel_initrd() {
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prepare_kdump_bootinfo
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||||
# $kernel is a variable from dracut
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||||
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'"
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||||
fi
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||||
@ -32,12 +33,12 @@ prepare_kernel_initrd() {
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||||
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||||
install() {
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||||
prepare_kernel_initrd
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if [[ ! -f $KDUMP_KERNEL ]]; then
|
||||
if [ ! -f "$KDUMP_KERNEL" ]; then
|
||||
derror "Could not find required kernel for earlykdump," \
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||||
"earlykdump will not work!"
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||||
return 1
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||||
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!"
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||||
@ -50,9 +51,7 @@ install() {
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||||
inst_binary "/usr/bin/gawk" "/usr/bin/awk"
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||||
inst_binary "/usr/bin/logger" "/usr/bin/logger"
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||||
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 "$moddir/early-kdump.sh"
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||||
inst_binary "$KDUMP_KERNEL"
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||||
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||||
@ -14,8 +14,9 @@ EARLY_KEXEC_ARGS=""
|
||||
. /lib/kdump-lib.sh
|
||||
. /lib/kdump-logger.sh
|
||||
|
||||
# initiate the kdump logger
|
||||
if ! dlog_init; then
|
||||
#initiate the kdump logger
|
||||
dlog_init
|
||||
if [ $? -ne 0 ]; then
|
||||
echo "failed to initiate the kdump logger."
|
||||
exit 1
|
||||
fi
|
||||
@ -29,7 +30,8 @@ prepare_parameters()
|
||||
|
||||
early_kdump_load()
|
||||
{
|
||||
if ! check_kdump_feasibility; then
|
||||
check_kdump_feasibility
|
||||
if [ $? -ne 0 ]; then
|
||||
return 1
|
||||
fi
|
||||
|
||||
@ -38,7 +40,8 @@ early_kdump_load()
|
||||
return 1
|
||||
fi
|
||||
|
||||
if is_kernel_loaded "kdump"; then
|
||||
check_current_kdump_status
|
||||
if [ $? == 0 ]; then
|
||||
return 1
|
||||
fi
|
||||
|
||||
@ -53,9 +56,10 @@ early_kdump_load()
|
||||
--command-line=$EARLY_KDUMP_CMDLINE --initrd=$EARLY_KDUMP_INITRD \
|
||||
$EARLY_KDUMP_KERNEL"
|
||||
|
||||
if $KEXEC $EARLY_KEXEC_ARGS $standard_kexec_args \
|
||||
$KEXEC ${EARLY_KEXEC_ARGS} $standard_kexec_args \
|
||||
--command-line="$EARLY_KDUMP_CMDLINE" \
|
||||
--initrd=$EARLY_KDUMP_INITRD $EARLY_KDUMP_KERNEL; then
|
||||
--initrd=$EARLY_KDUMP_INITRD $EARLY_KDUMP_KERNEL
|
||||
if [ $? == 0 ]; then
|
||||
dinfo "kexec: loaded early-kdump kernel"
|
||||
return 0
|
||||
else
|
||||
|
||||
@ -1,26 +1,27 @@
|
||||
# This service will run the real kdump error handler code. Executing the
|
||||
# failure action configured in kdump.conf
|
||||
# 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 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 Error Handler
|
||||
Description=Kdump Emergency
|
||||
DefaultDependencies=no
|
||||
After=systemd-vconsole-setup.service
|
||||
Wants=systemd-vconsole-setup.service
|
||||
IgnoreOnIsolate=yes
|
||||
|
||||
[Service]
|
||||
Environment=HOME=/
|
||||
Environment=DRACUT_SYSTEMD=1
|
||||
Environment=NEWROOT=/sysroot
|
||||
WorkingDirectory=/
|
||||
ExecStart=/bin/kdump.sh --error-handler
|
||||
ExecStopPost=-/bin/rm -f -- /.console_lock
|
||||
ExecStart=/usr/bin/systemctl --no-block isolate kdump-error-handler.service
|
||||
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.
|
||||
|
||||
33
SOURCES/dracut-kdump-error-handler.service
Normal file
33
SOURCES/dracut-kdump-error-handler.service
Normal file
@ -0,0 +1,33 @@
|
||||
# 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
|
||||
10
SOURCES/dracut-kdump-error-handler.sh
Executable file
10
SOURCES/dracut-kdump-error-handler.sh
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
|
||||
. /lib/kdump-lib-initramfs.sh
|
||||
|
||||
set -o pipefail
|
||||
export PATH=$PATH:$KDUMP_SCRIPT_DIR
|
||||
|
||||
get_kdump_confs
|
||||
do_failure_action
|
||||
do_final_action
|
||||
@ -1,618 +1,324 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# The main kdump routine in capture kernel, bash may not be the
|
||||
# default shell. Any code added must be POSIX compliant.
|
||||
|
||||
. /lib/dracut-lib.sh
|
||||
. /lib/kdump-logger.sh
|
||||
. /lib/kdump-lib-initramfs.sh
|
||||
|
||||
#initiate the kdump logger
|
||||
if ! dlog_init; then
|
||||
echo "failed to initiate the kdump logger."
|
||||
exit 1
|
||||
# continue here only if we have to save dump.
|
||||
if [ -f /etc/fadump.initramfs ] && [ ! -f /proc/device-tree/rtas/ibm,kernel-dump ] && [ ! -f /proc/device-tree/ibm,opal/dump/mpipl-boot ]; then
|
||||
exit 0
|
||||
fi
|
||||
|
||||
KDUMP_PATH="/var/crash"
|
||||
KDUMP_LOG_FILE="/run/initramfs/kexec-dmesg.log"
|
||||
CORE_COLLECTOR=""
|
||||
DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 7 -d 31"
|
||||
DMESG_COLLECTOR="/sbin/vmcore-dmesg"
|
||||
FAILURE_ACTION="systemctl reboot -f"
|
||||
DATEDIR=$(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
|
||||
. /lib/dracut-lib.sh
|
||||
. /lib/kdump-lib-initramfs.sh
|
||||
|
||||
set -o pipefail
|
||||
DUMP_RETVAL=0
|
||||
|
||||
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 $FINAL_ACTION
|
||||
}
|
||||
export PATH=$PATH:$KDUMP_SCRIPT_DIR
|
||||
|
||||
do_dump()
|
||||
{
|
||||
eval $DUMP_INSTRUCTION
|
||||
_ret=$?
|
||||
local _ret
|
||||
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "saving vmcore failed"
|
||||
fi
|
||||
eval $DUMP_INSTRUCTION
|
||||
_ret=$?
|
||||
|
||||
return $_ret
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "saving vmcore failed"
|
||||
fi
|
||||
|
||||
return $_ret
|
||||
}
|
||||
|
||||
do_kdump_pre()
|
||||
{
|
||||
if [ -n "$KDUMP_PRE" ]; then
|
||||
"$KDUMP_PRE"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$KDUMP_PRE exited with $_ret status"
|
||||
return $_ret
|
||||
fi
|
||||
fi
|
||||
local _ret
|
||||
|
||||
# if any script fails, it just raises warning and continues
|
||||
if [ -d /etc/kdump/pre.d ]; then
|
||||
for file in /etc/kdump/pre.d/*; do
|
||||
"$file"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$file exited with $_ret status"
|
||||
fi
|
||||
done
|
||||
fi
|
||||
return 0
|
||||
if [ -n "$KDUMP_PRE" ]; then
|
||||
"$KDUMP_PRE"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$KDUMP_PRE exited with $_ret status"
|
||||
return $_ret
|
||||
fi
|
||||
fi
|
||||
|
||||
# if any script fails, it just raises warning and continues
|
||||
if [ -d /etc/kdump/pre.d ]; then
|
||||
for file in /etc/kdump/pre.d/*; do
|
||||
"$file"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$file exited with $_ret status"
|
||||
fi
|
||||
done
|
||||
fi
|
||||
return 0
|
||||
}
|
||||
|
||||
do_kdump_post()
|
||||
{
|
||||
if [ -d /etc/kdump/post.d ]; then
|
||||
for file in /etc/kdump/post.d/*; do
|
||||
"$file" "$1"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$file exited with $_ret status"
|
||||
fi
|
||||
done
|
||||
fi
|
||||
local _ret
|
||||
|
||||
if [ -n "$KDUMP_POST" ]; then
|
||||
"$KDUMP_POST" "$1"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$KDUMP_POST exited with $_ret status"
|
||||
fi
|
||||
fi
|
||||
if [ -d /etc/kdump/post.d ]; then
|
||||
for file in /etc/kdump/post.d/*; do
|
||||
"$file" "$1"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$file exited with $_ret status"
|
||||
fi
|
||||
done
|
||||
fi
|
||||
|
||||
if [ -n "$KDUMP_POST" ]; then
|
||||
"$KDUMP_POST" "$1"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "$KDUMP_POST exited with $_ret status"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
add_dump_code()
|
||||
{
|
||||
DUMP_INSTRUCTION=$1
|
||||
}
|
||||
|
||||
# $1: block target, eg. /dev/sda
|
||||
dump_raw()
|
||||
{
|
||||
[ -b "$1" ] || return 1
|
||||
local _raw=$1
|
||||
|
||||
dinfo "saving to raw disk $1"
|
||||
[ -b "$_raw" ] || return 1
|
||||
|
||||
if ! echo "$CORE_COLLECTOR" | grep -q makedumpfile; then
|
||||
_src_size=$(stat --format %s /proc/vmcore)
|
||||
_src_size_mb=$((_src_size / 1048576))
|
||||
/kdumpscripts/monitor_dd_progress $_src_size_mb &
|
||||
fi
|
||||
dinfo "saving to raw disk $_raw"
|
||||
|
||||
dinfo "saving vmcore"
|
||||
$CORE_COLLECTOR /proc/vmcore | dd of="$1" bs=$DD_BLKSIZE >> /tmp/dd_progress_file 2>&1 || return 1
|
||||
sync
|
||||
if ! $(echo -n $CORE_COLLECTOR|grep -q makedumpfile); then
|
||||
_src_size=`ls -l /proc/vmcore | cut -d' ' -f5`
|
||||
_src_size_mb=$(($_src_size / 1048576))
|
||||
monitor_dd_progress $_src_size_mb &
|
||||
fi
|
||||
|
||||
dinfo "saving vmcore complete"
|
||||
return 0
|
||||
dinfo "saving vmcore"
|
||||
$CORE_COLLECTOR /proc/vmcore | dd of=$_raw 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()
|
||||
{
|
||||
_ret=0
|
||||
_ssh_opt="-i $1 -o BatchMode=yes -o StrictHostKeyChecking=yes"
|
||||
_ssh_dir="$KDUMP_PATH/$HOST_IP-$DATEDIR"
|
||||
if is_ipv6_address "$2"; then
|
||||
_scp_address=${2%@*}@"[${2#*@}]"
|
||||
else
|
||||
_scp_address=$2
|
||||
fi
|
||||
local _ret=0
|
||||
local _exitcode=0 _exitcode2=0
|
||||
local _opt="-i $1 -o BatchMode=yes -o StrictHostKeyChecking=yes"
|
||||
local _dir="$KDUMP_PATH/$HOST_IP-$DATEDIR"
|
||||
local _host=$2
|
||||
local _vmcore="vmcore"
|
||||
local _ipv6_addr="" _username=""
|
||||
|
||||
dinfo "saving to $2:$_ssh_dir"
|
||||
dinfo "saving to $_host:$_dir"
|
||||
|
||||
cat /var/lib/random-seed > /dev/urandom
|
||||
ssh -q $_ssh_opt "$2" mkdir -p "$_ssh_dir" || return 1
|
||||
cat /var/lib/random-seed > /dev/urandom
|
||||
ssh -q $_opt $_host mkdir -p $_dir || return 1
|
||||
|
||||
save_vmcore_dmesg_ssh "$DMESG_COLLECTOR" "$_ssh_dir" "$_ssh_opt" "$2"
|
||||
dinfo "saving vmcore"
|
||||
save_vmcore_dmesg_ssh ${DMESG_COLLECTOR} ${_dir} "${_opt}" $_host
|
||||
save_opalcore_ssh ${_dir} "${_opt}" $_host
|
||||
|
||||
save_opalcore_ssh "$_ssh_dir" "$_ssh_opt" "$2" "$_scp_address"
|
||||
dinfo "saving vmcore"
|
||||
|
||||
if [ "${CORE_COLLECTOR%%[[:blank:]]*}" = "scp" ]; then
|
||||
scp -q $_ssh_opt /proc/vmcore "$_scp_address:$_ssh_dir/vmcore-incomplete"
|
||||
_ret=$?
|
||||
_vmcore="vmcore"
|
||||
else
|
||||
$CORE_COLLECTOR /proc/vmcore | ssh $_ssh_opt "$2" "umask 0077 && dd bs=512 of='$_ssh_dir/vmcore-incomplete'"
|
||||
_ret=$?
|
||||
_vmcore="vmcore.flat"
|
||||
fi
|
||||
if is_ipv6_address "$_host"; then
|
||||
_username=${_host%@*}
|
||||
_ipv6_addr="[${_host#*@}]"
|
||||
fi
|
||||
|
||||
if [ $_ret -eq 0 ]; then
|
||||
ssh $_ssh_opt "$2" "mv '$_ssh_dir/vmcore-incomplete' '$_ssh_dir/$_vmcore'"
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
derror "moving vmcore failed, exitcode:$_ret"
|
||||
else
|
||||
dinfo "saving vmcore complete"
|
||||
fi
|
||||
else
|
||||
derror "saving vmcore failed, exitcode:$_ret"
|
||||
fi
|
||||
if [ "${CORE_COLLECTOR%%[[:blank:]]*}" = "scp" ]; then
|
||||
if [ -n "$_username" ] && [ -n "$_ipv6_addr" ]; then
|
||||
scp -q $_opt /proc/vmcore "$_username@$_ipv6_addr:$_dir/vmcore-incomplete"
|
||||
else
|
||||
scp -q $_opt /proc/vmcore "$_host:$_dir/vmcore-incomplete"
|
||||
fi
|
||||
_exitcode=$?
|
||||
else
|
||||
$CORE_COLLECTOR /proc/vmcore | ssh $_opt $_host "umask 0077 && dd bs=512 of=$_dir/vmcore-incomplete"
|
||||
_exitcode=$?
|
||||
_vmcore="vmcore.flat"
|
||||
fi
|
||||
|
||||
dinfo "saving the $KDUMP_LOG_FILE to $2:$_ssh_dir/"
|
||||
save_log
|
||||
if ! scp -q $_ssh_opt $KDUMP_LOG_FILE "$_scp_address:$_ssh_dir/"; then
|
||||
derror "saving log file failed, _exitcode:$_ret"
|
||||
fi
|
||||
if [ $_exitcode -eq 0 ]; then
|
||||
ssh $_opt $_host "mv $_dir/vmcore-incomplete $_dir/$_vmcore"
|
||||
_exitcode2=$?
|
||||
if [ $_exitcode2 -ne 0 ]; then
|
||||
derror "moving vmcore failed, _exitcode:$_exitcode2"
|
||||
else
|
||||
dinfo "saving vmcore complete"
|
||||
fi
|
||||
else
|
||||
derror "saving vmcore failed, _exitcode:$_exitcode"
|
||||
fi
|
||||
|
||||
return $_ret
|
||||
dinfo "saving the $KDUMP_LOG_FILE to $_host:$_dir/"
|
||||
save_log
|
||||
if [ -n "$_username" ] && [ -n "$_ipv6_addr" ]; 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 1
|
||||
fi
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
# $1: dump path
|
||||
# $2: ssh opts
|
||||
# $3: ssh address in <user>@<host> format
|
||||
# $4: scp address, similar with ssh address but IPv6 addresses are quoted
|
||||
save_opalcore_ssh()
|
||||
{
|
||||
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
|
||||
save_opalcore_ssh() {
|
||||
local _path=$1
|
||||
local _opts="$2"
|
||||
local _location=$3
|
||||
local _user_name="" _ipv6addr=""
|
||||
|
||||
dinfo "saving opalcore:$OPALCORE to $3:$1"
|
||||
ddebug "_path=$_path _opts=$_opts _location=$_location"
|
||||
|
||||
if ! scp $2 $OPALCORE "$4:$1/opalcore-incomplete"; then
|
||||
derror "saving opalcore failed"
|
||||
return 1
|
||||
fi
|
||||
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
|
||||
|
||||
ssh $2 "$3" mv "$1/opalcore-incomplete" "$1/opalcore"
|
||||
dinfo "saving opalcore complete"
|
||||
return 0
|
||||
if is_ipv6_address "$_host"; then
|
||||
_user_name=${_location%@*}
|
||||
_ipv6addr="[${_location#*@}]"
|
||||
fi
|
||||
|
||||
dinfo "saving opalcore:$OPALCORE to $_location:$_path"
|
||||
|
||||
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
|
||||
dinfo "saving opalcore complete"
|
||||
return 0
|
||||
}
|
||||
|
||||
# $1: dmesg collector
|
||||
# $2: dump path
|
||||
# $3: ssh opts
|
||||
# $4: ssh address in <user>@<host> format
|
||||
save_vmcore_dmesg_ssh()
|
||||
{
|
||||
dinfo "saving vmcore-dmesg.txt to $4:$2"
|
||||
if $1 /proc/vmcore | ssh $3 "$4" "umask 0077 && dd of='$2/vmcore-dmesg-incomplete.txt'"; then
|
||||
ssh -q $3 "$4" mv "$2/vmcore-dmesg-incomplete.txt" "$2/vmcore-dmesg.txt"
|
||||
dinfo "saving vmcore-dmesg.txt complete"
|
||||
else
|
||||
derror "saving vmcore-dmesg.txt failed"
|
||||
fi
|
||||
}
|
||||
save_vmcore_dmesg_ssh() {
|
||||
local _dmesg_collector=$1
|
||||
local _path=$2
|
||||
local _opts="$3"
|
||||
local _location=$4
|
||||
|
||||
wait_online_network()
|
||||
{
|
||||
# In some cases, network may still not be ready because nm-online is called
|
||||
# with "-s" which means to wait for NetworkManager startup to complete, rather
|
||||
# than waiting for network connectivity specifically. Wait 10mins more for the
|
||||
# network to be truely ready in these cases.
|
||||
_loop=0
|
||||
while [ $_loop -lt 600 ]; do
|
||||
sleep 1
|
||||
_loop=$((_loop + 1))
|
||||
if _route=$(kdump_get_ip_route "$1" 2> /dev/null); then
|
||||
printf "%s" "$_route"
|
||||
return
|
||||
else
|
||||
dwarn "Waiting for network to be ready (${_loop}s / 10min)"
|
||||
fi
|
||||
done
|
||||
dinfo "saving vmcore-dmesg.txt to $_location:$_path"
|
||||
$_dmesg_collector /proc/vmcore | ssh $_opts $_location "umask 0077 && dd of=$_path/vmcore-dmesg-incomplete.txt"
|
||||
_exitcode=$?
|
||||
|
||||
derror "Oops. The network still isn't ready after waiting 10mins."
|
||||
exit 1
|
||||
if [ $_exitcode -eq 0 ]; then
|
||||
ssh -q $_opts $_location mv $_path/vmcore-dmesg-incomplete.txt $_path/vmcore-dmesg.txt
|
||||
dinfo "saving vmcore-dmesg.txt complete"
|
||||
else
|
||||
derror "saving vmcore-dmesg.txt failed"
|
||||
fi
|
||||
}
|
||||
|
||||
get_host_ip()
|
||||
{
|
||||
|
||||
if ! is_nfs_dump_target && ! is_ssh_dump_target; then
|
||||
return 0
|
||||
fi
|
||||
|
||||
_kdump_remote_ip=$(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=$_kdumpip
|
||||
local _host
|
||||
if is_nfs_dump_target || is_ssh_dump_target
|
||||
then
|
||||
kdumpnic=$(getarg kdumpnic=)
|
||||
[ -z "$kdumpnic" ] && derror "failed to get kdumpnic!" && return 1
|
||||
_host=`ip addr show dev $kdumpnic|grep '[ ]*inet'`
|
||||
[ $? -ne 0 ] && derror "wrong kdumpnic: $kdumpnic" && return 1
|
||||
_host=`echo $_host | head -n 1 | cut -d' ' -f2`
|
||||
_host="${_host%%/*}"
|
||||
[ -z "$_host" ] && derror "wrong kdumpnic: $kdumpnic" && return 1
|
||||
HOST_IP=$_host
|
||||
fi
|
||||
return 0
|
||||
}
|
||||
|
||||
read_kdump_confs()
|
||||
read_kdump_conf()
|
||||
{
|
||||
if [ ! -f "$KDUMP_CONFIG_FILE" ]; then
|
||||
derror "$KDUMP_CONFIG_FILE not found"
|
||||
return
|
||||
fi
|
||||
if [ ! -f "$KDUMP_CONF" ]; then
|
||||
derror "$KDUMP_CONF not found"
|
||||
return
|
||||
fi
|
||||
|
||||
get_kdump_confs
|
||||
get_kdump_confs
|
||||
|
||||
# rescan for add code for dump target
|
||||
while read -r config_opt config_val; 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")
|
||||
DUMP_INSTRUCTION="dump_fs $config_val"
|
||||
fi
|
||||
;;
|
||||
ext[234] | xfs | btrfs | minix | nfs | virtiofs)
|
||||
config_val=$(get_mntpoint_from_target "$config_val")
|
||||
DUMP_INSTRUCTION="dump_fs $config_val"
|
||||
;;
|
||||
raw)
|
||||
DUMP_INSTRUCTION="dump_raw $config_val"
|
||||
;;
|
||||
ssh)
|
||||
DUMP_INSTRUCTION="dump_ssh $SSH_KEY_LOCATION $config_val"
|
||||
;;
|
||||
esac
|
||||
done < "$KDUMP_CONF_PARSED"
|
||||
# rescan for add code for dump target
|
||||
while read config_opt config_val;
|
||||
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 $config_val"
|
||||
fi
|
||||
;;
|
||||
ext[234]|xfs|btrfs|minix|nfs)
|
||||
config_val=$(get_mntpoint_from_target "$config_val")
|
||||
add_dump_code "dump_fs $config_val"
|
||||
;;
|
||||
raw)
|
||||
add_dump_code "dump_raw $config_val"
|
||||
;;
|
||||
ssh)
|
||||
add_dump_code "dump_ssh $SSH_KEY_LOCATION $config_val"
|
||||
;;
|
||||
esac
|
||||
done <<< "$(read_strip_comments $KDUMP_CONF)"
|
||||
}
|
||||
|
||||
fence_kdump_notify()
|
||||
{
|
||||
if [ -n "$FENCE_KDUMP_NODES" ]; then
|
||||
# shellcheck disable=SC2086
|
||||
$FENCE_KDUMP_SEND $FENCE_KDUMP_ARGS $FENCE_KDUMP_NODES &
|
||||
fi
|
||||
if [ -n "$FENCE_KDUMP_NODES" ]; then
|
||||
$FENCE_KDUMP_SEND $FENCE_KDUMP_ARGS $FENCE_KDUMP_NODES &
|
||||
fi
|
||||
}
|
||||
|
||||
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
|
||||
read_kdump_conf
|
||||
fence_kdump_notify
|
||||
|
||||
if ! get_host_ip; then
|
||||
derror "get_host_ip exited with non-zero status!"
|
||||
exit 1
|
||||
get_host_ip
|
||||
if [ $? -ne 0 ]; then
|
||||
derror "get_host_ip exited with non-zero status!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if [ -z "$DUMP_INSTRUCTION" ]; then
|
||||
DUMP_INSTRUCTION="dump_fs $NEWROOT"
|
||||
add_dump_code "dump_fs $NEWROOT"
|
||||
fi
|
||||
|
||||
if ! do_kdump_pre; 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
|
||||
exit 1
|
||||
do_kdump_pre
|
||||
if [ $? -ne 0 ]; then
|
||||
derror "kdump_pre script exited with non-zero status!"
|
||||
do_final_action
|
||||
# During systemd service to reboot the machine, stop this shell script running
|
||||
exit 1
|
||||
fi
|
||||
make_trace_mem "kdump saving vmcore" '1:shortmem' '2+:mem' '3+:slab'
|
||||
do_dump
|
||||
DUMP_RETVAL=$?
|
||||
|
||||
if ! do_kdump_post $DUMP_RETVAL; then
|
||||
derror "kdump_post script exited with non-zero status!"
|
||||
do_kdump_post $DUMP_RETVAL
|
||||
if [ $? -ne 0 ]; then
|
||||
derror "kdump_post script exited with non-zero status!"
|
||||
fi
|
||||
|
||||
if [ $DUMP_RETVAL -ne 0 ]; then
|
||||
exit 1
|
||||
exit 1
|
||||
fi
|
||||
|
||||
do_final_action
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -39,7 +39,7 @@ kernel are one and the same on ppc64.
|
||||
If you're reading this document, you should already have kexec-tools
|
||||
installed. If not, you install it via the following command:
|
||||
|
||||
# dnf install kexec-tools
|
||||
# yum install kexec-tools
|
||||
|
||||
Fadump Operational Flow:
|
||||
|
||||
@ -82,7 +82,7 @@ How to configure fadump:
|
||||
Again, we assume if you're reading this document, you should already have
|
||||
kexec-tools installed. If not, you install it via the following command:
|
||||
|
||||
# dnf install kexec-tools
|
||||
# yum install kexec-tools
|
||||
|
||||
Make the kernel to be configured with FADump as the default boot entry, if
|
||||
it isn't already:
|
||||
@ -94,24 +94,20 @@ anything interesting in the way of debug analysis, you'll also need to install
|
||||
the kernel-debuginfo package, of the same arch as your running kernel, and the
|
||||
crash utility:
|
||||
|
||||
# dnf --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
|
||||
# yum --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
|
||||
|
||||
Next up, we can enable firmware assisted dump and reserve the memory for boot
|
||||
memory preservation as specified in in the table of 'FADump Memory Requirements'
|
||||
section:
|
||||
|
||||
# kdumpctl reset-crashkernel --fadump=on
|
||||
|
||||
Alternatively, you can use grubby to reserve custom amount of memory:
|
||||
Next up, we need to modify some boot parameters to enable firmware assisted
|
||||
dump. With the help of grubby, it's very easy to append "fadump=on" to the end
|
||||
of your kernel boot parameters. To reserve the appropriate amount of memory
|
||||
for boot memory preservation, pass 'crashkernel=X' kernel cmdline parameter.
|
||||
For the recommended value of X, see 'FADump Memory Requirements' section.
|
||||
|
||||
# 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':
|
||||
|
||||
# kdumpctl reset-crashkernel --fadump=nocma
|
||||
linux kernel with 'fadump=nocma' instead of 'fadump=on'.
|
||||
|
||||
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,
|
||||
@ -137,7 +133,7 @@ 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):
|
||||
@ -348,12 +344,9 @@ or
|
||||
OR
|
||||
# grubby --update-kernel=/boot/vmlinuz-`uname -r` --args="fadump=off"
|
||||
|
||||
Remove "crashkernel=" from kernel cmdline parameters:
|
||||
If KDump is to be used as the dump capturing mechanism, update the crashkernel
|
||||
parameter (Else, remove "crashkernel=" parameter too, using grubby):
|
||||
|
||||
# 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
|
||||
# grubby --update-kernel=/boot/vmlinuz-$kver --args="crashkernl=auto"
|
||||
|
||||
Reboot the system for the settings to take effect.
|
||||
|
||||
@ -1,6 +1,7 @@
|
||||
#!/bin/bash
|
||||
# $1: target arch
|
||||
|
||||
|
||||
SED_EXP=""
|
||||
|
||||
generate()
|
||||
@ -19,12 +20,6 @@ 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,
|
||||
@ -46,12 +41,11 @@ generate()
|
||||
#
|
||||
# <fs type> <partition>
|
||||
# - Will mount -t <fs type> <partition> <mnt>, and copy
|
||||
# /proc/vmcore to <mnt>/<path>/%HOST_IP-%DATE/.
|
||||
# /proc/vmcore to <mnt>/<path>/%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
|
||||
@ -180,13 +174,11 @@ 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
|
||||
@ -209,20 +201,20 @@ update_param()
|
||||
}
|
||||
|
||||
case "$1" in
|
||||
aarch64) ;;
|
||||
|
||||
i386) ;;
|
||||
|
||||
ppc64) ;;
|
||||
|
||||
ppc64le) ;;
|
||||
|
||||
aarch64)
|
||||
;;
|
||||
i386)
|
||||
;;
|
||||
ppc64)
|
||||
;;
|
||||
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."
|
||||
;;
|
||||
|
||||
@ -1,186 +1,248 @@
|
||||
#!/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.
|
||||
# These variables and functions are useful in 2nd kernel
|
||||
|
||||
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"
|
||||
LVM_CONF="/etc/lvm/lvm.conf"
|
||||
. /lib/kdump-lib.sh
|
||||
. /lib/kdump-logger.sh
|
||||
|
||||
# Read kdump config in well formated style
|
||||
kdump_read_conf()
|
||||
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"
|
||||
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
|
||||
dlog_init
|
||||
if [ $? -ne 0 ]; then
|
||||
echo "failed to initiate the kdump logger."
|
||||
exit 1
|
||||
fi
|
||||
|
||||
get_kdump_confs()
|
||||
{
|
||||
# Following steps are applied in order: strip trailing comment, strip trailing space,
|
||||
# strip heading space, match non-empty line, remove duplicated spaces between conf name and value
|
||||
[ -f "$KDUMP_CONFIG_FILE" ] && sed -n -e "s/#.*//;s/\s*$//;s/^\s*//;s/\(\S\+\)\s*\(.*\)/\1 \2/p" $KDUMP_CONFIG_FILE
|
||||
local config_opt config_val
|
||||
|
||||
while read config_opt config_val;
|
||||
do
|
||||
# remove inline comments after the end of a directive.
|
||||
case "$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
|
||||
}
|
||||
|
||||
# Retrieves config value defined in kdump.conf
|
||||
# $1: config name, sed regexp compatible
|
||||
kdump_get_conf_val()
|
||||
# store the kexec kernel log to a file.
|
||||
save_log()
|
||||
{
|
||||
# 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
|
||||
dmesg -T > $KDUMP_LOG_FILE
|
||||
|
||||
if command -v journalctl > /dev/null; then
|
||||
journalctl -ab >> $KDUMP_LOG_FILE
|
||||
fi
|
||||
chmod 600 $KDUMP_LOG_FILE
|
||||
}
|
||||
|
||||
is_mounted()
|
||||
# dump_fs <mount point>
|
||||
dump_fs()
|
||||
{
|
||||
findmnt -k -n "$1" > /dev/null 2>&1
|
||||
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
|
||||
}
|
||||
|
||||
# $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)
|
||||
save_vmcore_dmesg_fs() {
|
||||
local _dmesg_collector=$1
|
||||
local _path=$2
|
||||
|
||||
[ -z "$__kdump_mnt" ] && [ -e "/etc/fstab" ] && __kdump_mnt=$(findmnt -s -n -r -o "$1" "--$2" "$3" $4)
|
||||
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 ${_path}/vmcore-dmesg.txt
|
||||
|
||||
echo "$__kdump_mnt"
|
||||
# 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
|
||||
}
|
||||
|
||||
is_ipv6_address()
|
||||
{
|
||||
echo "$1" | grep -q ":"
|
||||
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
|
||||
}
|
||||
|
||||
is_fs_type_nfs()
|
||||
dump_to_rootfs()
|
||||
{
|
||||
[ "$1" = "nfs" ] || [ "$1" = "nfs4" ]
|
||||
|
||||
dinfo "Trying to bring up rootfs device"
|
||||
systemctl start dracut-initqueue
|
||||
dinfo "Waiting for rootfs mount, will timeout after 90 seconds"
|
||||
systemctl start sysroot.mount
|
||||
|
||||
ddebug "NEWROOT=$NEWROOT"
|
||||
|
||||
dump_fs $NEWROOT
|
||||
}
|
||||
|
||||
is_fs_type_virtiofs()
|
||||
kdump_emergency_shell()
|
||||
{
|
||||
[ "$1" = "virtiofs" ]
|
||||
echo "PS1=\"kdump:\\\${PWD}# \"" >/etc/profile
|
||||
ddebug "Switching to dracut emergency..."
|
||||
/bin/dracut-emergency
|
||||
rm -f /etc/profile
|
||||
}
|
||||
|
||||
# If $1 contains dracut_args "--mount", return <filesystem type>
|
||||
get_dracut_args_fstype()
|
||||
do_failure_action()
|
||||
{
|
||||
echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f3
|
||||
dinfo "Executing failure action $FAILURE_ACTION"
|
||||
eval $FAILURE_ACTION
|
||||
}
|
||||
|
||||
# If $1 contains dracut_args "--mount", return <device>
|
||||
get_dracut_args_target()
|
||||
do_final_action()
|
||||
{
|
||||
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 "$1" 2>&1); then
|
||||
exit 1
|
||||
fi
|
||||
echo "$_route"
|
||||
}
|
||||
|
||||
kdump_get_ip_route_field()
|
||||
{
|
||||
echo "$1" | sed -n -e "s/^.*\<$2\>\s\+\(\S\+\).*$/\1/p"
|
||||
dinfo "Executing final action $FINAL_ACTION"
|
||||
eval $FINAL_ACTION
|
||||
}
|
||||
|
||||
1661
SOURCES/kdump-lib.sh
1661
SOURCES/kdump-lib.sh
File diff suppressed because it is too large
Load Diff
@ -1,4 +1,4 @@
|
||||
#!/bin/sh
|
||||
#!/bin/bash
|
||||
#
|
||||
# This comes from the dracut-logger.sh
|
||||
#
|
||||
@ -34,8 +34,6 @@
|
||||
# First of all you have to start with dlog_init() function which initializes
|
||||
# required variables. Don't call any other logging function before that one!
|
||||
#
|
||||
# The code in this file might be run in an environment without bash.
|
||||
# Any code added must be POSIX compliant.
|
||||
|
||||
# Define vairables for the log levels in this module.
|
||||
kdump_stdloglvl=""
|
||||
@ -55,12 +53,11 @@ fi
|
||||
#
|
||||
get_kdump_loglvl()
|
||||
{
|
||||
[ -f /lib/dracut-lib.sh ] && kdump_sysloglvl=$(getarg rd.kdumploglvl)
|
||||
(type -p getarg) && kdump_sysloglvl=$(getarg rd.kdumploglvl)
|
||||
[ -z "$kdump_sysloglvl" ] && return 1;
|
||||
|
||||
if [ -f /lib/dracut-lib.sh ] && ! isdigit "$kdump_sysloglvl"; then
|
||||
return 1
|
||||
fi
|
||||
(type -p isdigit) && isdigit $kdump_sysloglvl
|
||||
[ $? -ne 0 ] && return 1;
|
||||
|
||||
return 0
|
||||
}
|
||||
@ -86,10 +83,11 @@ check_loglvl()
|
||||
# @retval 0 on success.
|
||||
#
|
||||
dlog_init() {
|
||||
ret=0
|
||||
local ret=0; local errmsg
|
||||
|
||||
if [ -s /proc/vmcore ];then
|
||||
if ! get_kdump_loglvl; then
|
||||
get_kdump_loglvl
|
||||
if [ $? -ne 0 ];then
|
||||
logger -t "kdump[$$]" -p warn -- "Kdump is using the default log level(3)."
|
||||
kdump_sysloglvl=3
|
||||
fi
|
||||
@ -106,7 +104,8 @@ dlog_init() {
|
||||
[ -z "$kdump_kmsgloglvl" ] && kdump_kmsgloglvl=0
|
||||
|
||||
for loglvl in "$kdump_stdloglvl" "$kdump_kmsgloglvl" "$kdump_sysloglvl"; do
|
||||
if ! check_loglvl "$loglvl"; then
|
||||
check_loglvl "$loglvl"
|
||||
if [ $? -ne 0 ]; then
|
||||
echo "Illegal log level: $kdump_stdloglvl $kdump_kmsgloglvl $kdump_sysloglvl"
|
||||
return 1
|
||||
fi
|
||||
@ -115,21 +114,21 @@ 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 [ -d /run/systemd/journal ] \
|
||||
&& systemd-cat --version 1>/dev/null 2>&1 \
|
||||
&& systemctl --quiet is-active systemd-journald.socket 1>/dev/null 2>&1; then
|
||||
if [[ $kdump_sysloglvl -gt 0 ]]; then
|
||||
if [[ -d /run/systemd/journal ]] \
|
||||
&& type -P systemd-cat &>/dev/null \
|
||||
&& systemctl --quiet is-active systemd-journald.socket &>/dev/null; then
|
||||
readonly _systemdcatfile="/var/tmp/systemd-cat"
|
||||
mkfifo "$_systemdcatfile" 1>/dev/null 2>&1
|
||||
mkfifo "$_systemdcatfile" &>/dev/null
|
||||
readonly _dlogfd=15
|
||||
systemd-cat -t 'kdump' --level-prefix=true <"$_systemdcatfile" &
|
||||
exec 15>"$_systemdcatfile"
|
||||
elif ! [ -S /dev/log ] && [ -w /dev/log ] || ! command -v logger >/dev/null; then
|
||||
elif ! [ -S /dev/log -a -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
|
||||
@ -138,31 +137,31 @@ dlog_init() {
|
||||
fi
|
||||
fi
|
||||
|
||||
kdump_maxloglvl=0
|
||||
for _dlog_lvl in $kdump_stdloglvl $kdump_sysloglvl $kdump_kmsgloglvl; do
|
||||
[ $_dlog_lvl -gt $kdump_maxloglvl ] && kdump_maxloglvl=$_dlog_lvl
|
||||
local lvl; local maxloglvl_l=0
|
||||
for lvl in $kdump_stdloglvl $kdump_sysloglvl $kdump_kmsgloglvl; do
|
||||
[[ $lvl -gt $maxloglvl_l ]] && maxloglvl_l=$lvl
|
||||
done
|
||||
readonly kdump_maxloglvl
|
||||
readonly kdump_maxloglvl=$maxloglvl_l
|
||||
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
|
||||
@ -174,7 +173,7 @@ dlog_init() {
|
||||
|
||||
## @brief Converts numeric level to logger priority defined by POSIX.2.
|
||||
#
|
||||
# @param $1: Numeric logging level in range from 1 to 4.
|
||||
# @param lvl 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.
|
||||
@ -190,7 +189,7 @@ _lvl2syspri() {
|
||||
|
||||
## @brief Converts logger numeric level to syslog log level
|
||||
#
|
||||
# @param $1: Numeric logging level in range from 1 to 4.
|
||||
# @param lvl 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
|
||||
@ -210,25 +209,27 @@ _lvl2syspri() {
|
||||
#
|
||||
# @see /usr/include/sys/syslog.h
|
||||
_dlvl2syslvl() {
|
||||
local lvl
|
||||
|
||||
case "$1" in
|
||||
1) set -- 3;;
|
||||
2) set -- 4;;
|
||||
3) set -- 6;;
|
||||
4) set -- 7;;
|
||||
1) lvl=3;;
|
||||
2) lvl=4;;
|
||||
3) lvl=6;;
|
||||
4) lvl=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 + $1))
|
||||
echo $((24+$lvl))
|
||||
}
|
||||
|
||||
## @brief Prints to stderr, to syslog and/or /dev/kmsg given message with
|
||||
# given level (priority).
|
||||
#
|
||||
# @param $1: Numeric logging level.
|
||||
# @param $2: Message.
|
||||
# @param lvl Numeric logging level.
|
||||
# @param msg Message.
|
||||
# @retval 0 It's always returned, even if logging failed.
|
||||
#
|
||||
# @note This function is not supposed to be called manually. Please use
|
||||
@ -250,24 +251,27 @@ _dlvl2syslvl() {
|
||||
# - @c INFO to @c info
|
||||
# - @c DEBUG to @c debug
|
||||
_do_dlog() {
|
||||
[ "$1" -le $kdump_stdloglvl ] && printf -- 'kdump: %s\n' "$2" >&2
|
||||
local lvl="$1"; shift
|
||||
local msg="$*"
|
||||
|
||||
if [ "$1" -le $kdump_sysloglvl ]; then
|
||||
if [ "$_dlogfd" ]; then
|
||||
printf -- "<%s>%s\n" "$(($(_dlvl2syslvl "$1") & 7))" "$2" 1>&$_dlogfd
|
||||
[[ $lvl -le $kdump_stdloglvl ]] && printf -- 'kdump: %s\n' "$msg" >&2
|
||||
|
||||
if [[ $lvl -le $kdump_sysloglvl ]]; then
|
||||
if [[ "$_dlogfd" ]]; then
|
||||
printf -- "<%s>%s\n" "$(($(_dlvl2syslvl $lvl) & 7))" "$msg" >&$_dlogfd
|
||||
else
|
||||
logger -t "kdump[$$]" -p "$(_lvl2syspri "$1")" -- "$2"
|
||||
logger -t "kdump[$$]" -p $(_lvl2syspri $lvl) -- "$msg"
|
||||
fi
|
||||
fi
|
||||
|
||||
[ "$1" -le $kdump_kmsgloglvl ] && \
|
||||
echo "<$(_dlvl2syslvl "$1")>kdump[$$] $2" >/dev/kmsg
|
||||
[[ $lvl -le $kdump_kmsgloglvl ]] && \
|
||||
echo "<$(_dlvl2syslvl $lvl)>kdump[$$] $msg" >/dev/kmsg
|
||||
}
|
||||
|
||||
## @brief Internal helper function for _do_dlog()
|
||||
#
|
||||
# @param $1: Numeric logging level.
|
||||
# @param $2 [...]: Message.
|
||||
# @param lvl Numeric logging level.
|
||||
# @param msg Message.
|
||||
# @retval 0 It's always returned, even if logging failed.
|
||||
#
|
||||
# @note This function is not supposed to be called manually. Please use
|
||||
@ -282,13 +286,12 @@ _do_dlog() {
|
||||
# echo "This is a warning" | dwarn
|
||||
dlog() {
|
||||
[ -z "$kdump_maxloglvl" ] && return 0
|
||||
[ "$1" -le "$kdump_maxloglvl" ] || return 0
|
||||
[[ $1 -le $kdump_maxloglvl ]] || return 0
|
||||
|
||||
if [ $# -gt 1 ]; then
|
||||
_dlog_lvl=$1; shift
|
||||
_do_dlog "$_dlog_lvl" "$*"
|
||||
if [[ $# -gt 1 ]]; then
|
||||
_do_dlog "$@"
|
||||
else
|
||||
while read -r line || [ -n "$line" ]; do
|
||||
while read line || [ -n "$line" ]; do
|
||||
_do_dlog "$1" "$line"
|
||||
done
|
||||
fi
|
||||
@ -301,9 +304,7 @@ dlog() {
|
||||
ddebug() {
|
||||
set +x
|
||||
dlog 4 "$@"
|
||||
if [ -n "$debug" ]; then
|
||||
set -x
|
||||
fi
|
||||
[ -n "$debug" ] && set -x || :
|
||||
}
|
||||
|
||||
## @brief Logs message at INFO level (3)
|
||||
@ -313,9 +314,7 @@ ddebug() {
|
||||
dinfo() {
|
||||
set +x
|
||||
dlog 3 "$@"
|
||||
if [ -n "$debug" ]; then
|
||||
set -x
|
||||
fi
|
||||
[ -n "$debug" ] && set -x || :
|
||||
}
|
||||
|
||||
## @brief Logs message at WARN level (2)
|
||||
@ -325,9 +324,7 @@ dinfo() {
|
||||
dwarn() {
|
||||
set +x
|
||||
dlog 2 "$@"
|
||||
if [ -n "$debug" ]; then
|
||||
set -x
|
||||
fi
|
||||
[ -n "$debug" ] && set -x || :
|
||||
}
|
||||
|
||||
## @brief It's an alias to dwarn() function.
|
||||
@ -337,9 +334,7 @@ dwarn() {
|
||||
dwarning() {
|
||||
set +x
|
||||
dwarn "$@"
|
||||
if [ -n "$debug" ]; then
|
||||
set -x
|
||||
fi
|
||||
[ -n "$debug" ] && set -x || :
|
||||
}
|
||||
|
||||
## @brief Logs message at ERROR level (1)
|
||||
@ -349,7 +344,5 @@ dwarning() {
|
||||
derror() {
|
||||
set +x
|
||||
dlog 1 "$@"
|
||||
if [ -n "$debug" ]; then
|
||||
set -x
|
||||
fi
|
||||
[ -n "$debug" ] && set -x || :
|
||||
}
|
||||
|
||||
@ -26,24 +26,6 @@ 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
|
||||
@ -59,7 +41,7 @@ mount point.
|
||||
|
||||
.B ssh <user@server>
|
||||
.RS
|
||||
Will save /proc/vmcore through ssh pipe to <user@server>:<path>/%HOST-%DATE/,
|
||||
Will scp /proc/vmcore 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
|
||||
@ -73,7 +55,7 @@ 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>/%HOST_IP-%DATE/. NOTE: <partition> can be a device node, label
|
||||
<mnt>/<path>/%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
|
||||
@ -139,7 +121,7 @@ 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
|
||||
|
||||
@ -163,7 +145,7 @@ 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
|
||||
|
||||
@ -314,7 +296,7 @@ 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.conf and edit
|
||||
a certain module. One can edit /etc/sysconfig/kdump 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
|
||||
|
||||
@ -11,7 +11,6 @@ ExecStop=/usr/bin/kdumpctl stop
|
||||
ExecReload=/usr/bin/kdumpctl reload
|
||||
RemainAfterExit=yes
|
||||
StartLimitInterval=0
|
||||
PrivateTmp=yes
|
||||
|
||||
[Install]
|
||||
WantedBy=multi-user.target
|
||||
|
||||
@ -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 cma hugetlb_cma ignition.firstboot"
|
||||
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len 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 cma=0 hugetlb_cma=0"
|
||||
KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices novmcoredd"
|
||||
|
||||
# Any additional kexec arguments required. In most situations, this should
|
||||
# be left empty
|
||||
|
||||
@ -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 cma hugetlb_cma ignition.firstboot"
|
||||
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb 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 cma=0 hugetlb_cma=0"
|
||||
KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices cgroup_disable=memory udev.children-max=2 panic=10 swiotlb=noforce novmcoredd"
|
||||
|
||||
# Any additional kexec arguments required. In most situations, this should
|
||||
# be left empty
|
||||
|
||||
@ -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 cma hugetlb_cma ignition.firstboot"
|
||||
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb 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 transparent_hugepage=never novmcoredd cma=0 hugetlb_cma=0"
|
||||
KDUMP_COMMANDLINE_APPEND="irqpoll nr_cpus=1 reset_devices numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never novmcoredd"
|
||||
|
||||
# Any additional kexec arguments required. In most situations, this should
|
||||
# be left empty
|
||||
|
||||
@ -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 hugetlb_cma ignition.firstboot"
|
||||
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb 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 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0"
|
||||
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"
|
||||
|
||||
# Any additional kexec arguments required. In most situations, this should
|
||||
# be left empty
|
||||
|
||||
@ -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 hugetlb_cma ignition.firstboot"
|
||||
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb 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 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0"
|
||||
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"
|
||||
|
||||
# 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 -s"
|
||||
KEXEC_ARGS="--dt-no-old-root"
|
||||
|
||||
#Where to find the boot image
|
||||
#KDUMP_BOOTDIR="/boot"
|
||||
|
||||
@ -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 vmcp_cma cma hugetlb_cma prot_virt ignition.firstboot zfcp.allow_lun_scan"
|
||||
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb 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 transparent_hugepage=never novmcoredd vmcp_cma=0 cma=0 hugetlb_cma=0"
|
||||
KDUMP_COMMANDLINE_APPEND="nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 rootflags=nofail transparent_hugepage=never novmcoredd"
|
||||
|
||||
# Any additional /sbin/mkdumprd arguments required.
|
||||
MKDUMPRD_ARGS=""
|
||||
|
||||
@ -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 cma hugetlb_cma ignition.firstboot"
|
||||
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb 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 acpi_no_memhotplug transparent_hugepage=never nokaslr hest_disable novmcoredd cma=0 hugetlb_cma=0"
|
||||
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"
|
||||
|
||||
# Any additional kexec arguments required. In most situations, this should
|
||||
# be left empty
|
||||
|
||||
1161
SOURCES/kdumpctl
1161
SOURCES/kdumpctl
File diff suppressed because it is too large
Load Diff
@ -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 debugging and a helper to set up ssh key authentication.
|
||||
provides more details for debug and a helper to setup 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 a non-zero value if kdump is not operational.
|
||||
It returns non-zero value if kdump is not operational.
|
||||
.TP
|
||||
.I restart
|
||||
Is equal to
|
||||
.I start; stop
|
||||
.TP
|
||||
.I reload
|
||||
reload the crash kernel image and initramfs without triggering a rebuild.
|
||||
reload crash kernel image and initramfs without triggering a rebuild.
|
||||
.TP
|
||||
.I rebuild
|
||||
rebuild the crash kernel initramfs.
|
||||
@ -43,29 +43,12 @@ 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 the crash kernel in megabytes.
|
||||
Prints the size of reserved memory for crash kernel in megabytes.
|
||||
.TP
|
||||
.I estimate
|
||||
Estimate a suitable crashkernel value for the current machine. This is a
|
||||
best-effort estimate. It will print a recommended crashkernel value
|
||||
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.
|
||||
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.
|
||||
|
||||
.SH "SEE ALSO"
|
||||
.BR kdump.conf (5),
|
||||
|
||||
@ -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:
|
||||
|
||||
# dnf install kexec-tools
|
||||
# yum install kexec-tools
|
||||
|
||||
Now load a kernel with kexec:
|
||||
|
||||
@ -66,31 +66,23 @@ 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:
|
||||
|
||||
# dnf install kexec-tools
|
||||
# yum 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:
|
||||
|
||||
# dnf --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
|
||||
# yum --enablerepo=\*debuginfo install kernel-debuginfo.$(uname -m) crash
|
||||
|
||||
Next up, we need to reserve a chunk of memory for the capture kernel. To use
|
||||
the default crashkernel value, you can kdumpctl:
|
||||
Next up, we need to modify some boot parameters to reserve a chunk of memory for
|
||||
the capture kernel. With the help of grubby, it's very easy to append
|
||||
"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.
|
||||
|
||||
# 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.
|
||||
# grubby --args="crashkernel=128M" --update-kernel=/boot/vmlinuz-`uname -r`
|
||||
|
||||
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
|
||||
@ -143,7 +135,7 @@ 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
|
||||
utility in conjunction with the previously installed kernel-debuginfo to
|
||||
kernel 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
|
||||
@ -195,7 +187,7 @@ 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:
|
||||
|
||||
http://kbase.redhat.com/faq/FAQ_43_5559.shtm
|
||||
https://access.redhat.com/solutions/2023
|
||||
|
||||
In addition, on PowerPC boxes, Kdump can also be triggered via Hardware
|
||||
Management Console(HMC) using 'Ctrl', 'O' and 'C' keyboard keys.
|
||||
@ -207,7 +199,7 @@ 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.
|
||||
|
||||
http://kbase.redhat.com/faq/FAQ_85_9129.shtm
|
||||
https://access.redhat.com/solutions/125103
|
||||
|
||||
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.
|
||||
|
||||
@ -0,0 +1,72 @@
|
||||
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
|
||||
|
||||
@ -1,39 +0,0 @@
|
||||
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
|
||||
|
||||
583
SOURCES/mkdumprd
583
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
|
||||
|
||||
@ -17,21 +17,23 @@ fi
|
||||
export IN_KDUMP=1
|
||||
|
||||
#initiate the kdump logger
|
||||
if ! dlog_init; then
|
||||
dlog_init
|
||||
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 resume ifcfg earlykdump")
|
||||
dracut_args="--add kdumpbase --quiet --hostonly --hostonly-cmdline --hostonly-i18n --hostonly-mode strict --hostonly-nics '' -o \"plymouth dash resume ifcfg earlykdump\" --compress=xz"
|
||||
|
||||
MKDUMPRD_TMPDIR="$(mktemp -d -t mkdumprd.XXXXXX)"
|
||||
readonly MKDUMPRD_TMPDIR="$(mktemp -d -t mkdumprd.XXXXXX)"
|
||||
[ -d "$MKDUMPRD_TMPDIR" ] || perror_exit "dracut: mktemp -p -d -t dracut.XXXXXX failed."
|
||||
MKDUMPRD_TMPMNT="$MKDUMPRD_TMPDIR/target"
|
||||
readonly MKDUMPRD_TMPMNT="$MKDUMPRD_TMPDIR/target"
|
||||
|
||||
trap '
|
||||
ret=$?;
|
||||
@ -43,71 +45,66 @@ trap '
|
||||
# clean up after ourselves no matter how we die.
|
||||
trap 'exit 1;' SIGINT
|
||||
|
||||
add_dracut_arg()
|
||||
{
|
||||
dracut_args+=("$@")
|
||||
add_dracut_arg() {
|
||||
dracut_args="$dracut_args $@"
|
||||
}
|
||||
|
||||
add_dracut_mount()
|
||||
{
|
||||
add_dracut_arg "--mount" "$1"
|
||||
add_dracut_mount() {
|
||||
add_dracut_arg "--mount" "\"$1\""
|
||||
}
|
||||
|
||||
add_dracut_sshkey()
|
||||
{
|
||||
add_dracut_arg "--sshkey" "$1"
|
||||
add_dracut_sshkey() {
|
||||
add_dracut_arg "--sshkey" "\"$1\""
|
||||
}
|
||||
|
||||
# caller should ensure $1 is valid and mounted in 1st kernel
|
||||
to_mount()
|
||||
{
|
||||
local _target=$1 _fstype=$2 _options=$3 _sed_cmd _new_mntpoint _pdev
|
||||
to_mount() {
|
||||
local _target=$1 _fstype=$2 _options=$3 _new_mntpoint _pdev
|
||||
|
||||
_new_mntpoint=$(get_kdump_mntpoint_from_target "$_target")
|
||||
_fstype="${_fstype:-$(get_fs_type_from_target "$_target")}"
|
||||
_options="${_options:-$(get_mntopt_from_target "$_target")}"
|
||||
_options="${_options:-defaults}"
|
||||
_new_mntpoint=$(get_kdump_mntpoint_from_target $_target)
|
||||
_fstype="${_fstype:-$(get_fs_type_from_target $_target)}"
|
||||
_options="${_options:-$(get_mntopt_from_target $_target)}"
|
||||
_options="${_options:-defaults}"
|
||||
|
||||
if [[ $_fstype == "nfs"* ]]; then
|
||||
_pdev=$_target
|
||||
_sed_cmd+='s/,\(mount\)\?addr=[^,]*//g;'
|
||||
_sed_cmd+='s/,\(mount\)\?proto=[^,]*//g;'
|
||||
_sed_cmd+='s/,clientaddr=[^,]*//;'
|
||||
else
|
||||
# for non-nfs _target converting to use udev persistent name
|
||||
_pdev="$(kdump_get_persistent_dev "$_target")"
|
||||
if [[ -z $_pdev ]]; then
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
if [[ "$_fstype" == "nfs"* ]]; then
|
||||
_pdev=$_target
|
||||
_options=$(echo $_options | sed 's/,\(mount\)\?addr=[^,]*//g')
|
||||
_options=$(echo $_options | sed 's/,\(mount\)\?proto=[^,]*//g')
|
||||
_options=$(echo $_options | sed 's/,clientaddr=[^,]*//')
|
||||
else
|
||||
# for non-nfs _target converting to use udev persistent name
|
||||
_pdev="$(kdump_get_persistent_dev $_target)"
|
||||
if [ -z "$_pdev" ]; then
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# mount fs target as rw in 2nd kernel
|
||||
_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.
|
||||
_sed_cmd+='s/\(^\|,\)noauto\($\|,\)/\1/g;'
|
||||
# drop nofail or nobootwait
|
||||
_sed_cmd+='s/\(^\|,\)nofail\($\|,\)/\1/g;'
|
||||
_sed_cmd+='s/\(^\|,\)nobootwait\($\|,\)/\1/g;'
|
||||
#mount fs target as rw in 2nd kernel
|
||||
_options=$(echo $_options | sed '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')
|
||||
# use both nofail and x-systemd.before to ensure systemd will try best to
|
||||
# mount it before kdump starts, this is an attempt to improve robustness
|
||||
_options="$_options,nofail,x-systemd.before=initrd-fs.target"
|
||||
|
||||
_options=$(echo "$_options" | sed "$_sed_cmd")
|
||||
|
||||
echo "$_pdev $_new_mntpoint $_fstype $_options"
|
||||
echo "$_pdev $_new_mntpoint $_fstype $_options"
|
||||
}
|
||||
|
||||
#Function: get_ssh_size
|
||||
#$1=dump target
|
||||
#called from while loop and shouldn't read from stdin, so we're using "ssh -n"
|
||||
get_ssh_size()
|
||||
{
|
||||
local _out
|
||||
local _opt=("-i" "$SSH_KEY_LOCATION" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=yes")
|
||||
get_ssh_size() {
|
||||
local _opt _out _size
|
||||
_opt="-i $SSH_KEY_LOCATION -o BatchMode=yes -o StrictHostKeyChecking=yes"
|
||||
_out=$(ssh -q -n $_opt $1 "df -P $SAVE_PATH")
|
||||
[ $? -ne 0 ] && {
|
||||
perror_exit "checking remote ssh server available size failed."
|
||||
}
|
||||
|
||||
if ! _out=$(ssh -q -n "${_opt[@]}" "$1" "df" "--output=avail" "$SAVE_PATH"); then
|
||||
perror_exit "checking remote ssh server available size failed."
|
||||
fi
|
||||
|
||||
echo -n "$_out" | tail -1
|
||||
#ssh output removed the line break, so print field NF-2
|
||||
_size=$(echo -n $_out| awk '{avail=NF-2; print $avail}')
|
||||
echo -n $_size
|
||||
}
|
||||
|
||||
#mkdir if save path does not exist on ssh dump target
|
||||
@ -116,340 +113,323 @@ get_ssh_size()
|
||||
#called from while loop and shouldn't read from stdin, so we're using "ssh -n"
|
||||
mkdir_save_path_ssh()
|
||||
{
|
||||
local _opt _dir
|
||||
_opt=(-i "$SSH_KEY_LOCATION" -o BatchMode=yes -o StrictHostKeyChecking=yes)
|
||||
ssh -qn "${_opt[@]}" "$1" mkdir -p "$SAVE_PATH" &> /dev/null ||
|
||||
perror_exit "mkdir failed on $1:$SAVE_PATH"
|
||||
local _opt _dir
|
||||
_opt="-i $SSH_KEY_LOCATION -o BatchMode=yes -o StrictHostKeyChecking=yes"
|
||||
ssh -qn $_opt $1 mkdir -p $SAVE_PATH 2>&1 > /dev/null
|
||||
_ret=$?
|
||||
if [ $_ret -ne 0 ]; then
|
||||
perror_exit "mkdir failed on $1:$SAVE_PATH"
|
||||
fi
|
||||
|
||||
# check whether user has write permission on $1:$SAVE_PATH
|
||||
_dir=$(ssh -qn "${_opt[@]}" "$1" mktemp -dqp "$SAVE_PATH" 2> /dev/null) ||
|
||||
perror_exit "Could not create temporary directory on $1:$SAVE_PATH. Make sure user has write permission on destination"
|
||||
ssh -qn "${_opt[@]}" "$1" rmdir "$_dir"
|
||||
#check whether user has write permission on $1:$SAVE_PATH
|
||||
_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
|
||||
|
||||
return 0
|
||||
return 0
|
||||
}
|
||||
|
||||
#Function: get_fs_size
|
||||
#$1=dump target
|
||||
get_fs_size()
|
||||
{
|
||||
df --output=avail "$(get_mntpoint_from_target "$1")/$SAVE_PATH" | tail -1
|
||||
get_fs_size() {
|
||||
local _mnt=$(get_mntpoint_from_target $1)
|
||||
echo -n $(df -P "${_mnt}/$SAVE_PATH"|tail -1|awk '{print $4}')
|
||||
}
|
||||
|
||||
#Function: get_raw_size
|
||||
#$1=dump target
|
||||
get_raw_size()
|
||||
{
|
||||
fdisk -s "$1"
|
||||
get_raw_size() {
|
||||
echo -n $(fdisk -s "$1")
|
||||
}
|
||||
|
||||
#Function: check_size
|
||||
#$1: dump type string ('raw', 'fs', 'ssh')
|
||||
#$2: dump target
|
||||
check_size()
|
||||
{
|
||||
local avail memtotal
|
||||
check_size() {
|
||||
local avail memtotal
|
||||
|
||||
memtotal=$(awk '/MemTotal/{print $2}' /proc/meminfo)
|
||||
case "$1" in
|
||||
raw)
|
||||
avail=$(get_raw_size "$2")
|
||||
;;
|
||||
ssh)
|
||||
avail=$(get_ssh_size "$2")
|
||||
;;
|
||||
fs)
|
||||
avail=$(get_fs_size "$2")
|
||||
;;
|
||||
*)
|
||||
return
|
||||
;;
|
||||
esac || perror_exit "Check dump target size failed"
|
||||
memtotal=$(awk '/MemTotal/{print $2}' /proc/meminfo)
|
||||
case "$1" in
|
||||
raw)
|
||||
avail=$(get_raw_size "$2")
|
||||
;;
|
||||
ssh)
|
||||
avail=$(get_ssh_size "$2")
|
||||
;;
|
||||
fs)
|
||||
avail=$(get_fs_size "$2")
|
||||
;;
|
||||
*)
|
||||
return
|
||||
esac
|
||||
|
||||
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
|
||||
if [ $? -ne 0 ]; 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
|
||||
}
|
||||
|
||||
check_save_path_fs()
|
||||
{
|
||||
local _path=$1
|
||||
local _path=$1
|
||||
|
||||
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"
|
||||
if [ ! -d $_path ]; then
|
||||
perror_exit "Dump path $_path does not exist."
|
||||
fi
|
||||
}
|
||||
|
||||
check_user_configured_target()
|
||||
{
|
||||
local _target=$1 _cfg_fs_type=$2 _mounted
|
||||
local _mnt _opt _fstype
|
||||
local _target=$1 _cfg_fs_type=$2 _mounted
|
||||
local _mnt=$(get_mntpoint_from_target $_target)
|
||||
local _opt=$(get_mntopt_from_target $_target)
|
||||
local _fstype=$(get_fs_type_from_target $_target)
|
||||
|
||||
_mnt=$(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
|
||||
|
||||
if [[ -n $_fstype ]]; then
|
||||
# In case of nfs4, nfs should be used instead, nfs* options is deprecated in kdump.conf
|
||||
[[ $_fstype == "nfs"* ]] && _fstype=nfs
|
||||
if [ -n "$_cfg_fs_type" ] && [ "$_fstype" != "$_cfg_fs_type" ]; then
|
||||
perror_exit "\"$_target\" have a wrong type config \"$_cfg_fs_type\", expected \"$_fstype\""
|
||||
fi
|
||||
else
|
||||
_fstype="$_cfg_fs_type"
|
||||
_fstype="$_cfg_fs_type"
|
||||
fi
|
||||
|
||||
if [[ -n $_cfg_fs_type ]] && [[ $_fstype != "$_cfg_fs_type" ]]; then
|
||||
perror_exit "\"$_target\" have a wrong type config \"$_cfg_fs_type\", expected \"$_fstype\""
|
||||
fi
|
||||
else
|
||||
_fstype="$_cfg_fs_type"
|
||||
_fstype="$_cfg_fs_type"
|
||||
fi
|
||||
# For noauto mount, mount it inplace with default value.
|
||||
# Else use the temporary target directory
|
||||
if [ -n "$_mnt" ]; then
|
||||
if ! is_mounted "$_mnt"; then
|
||||
if [[ $_opt = *",noauto"* ]]; then
|
||||
mount $_mnt
|
||||
[ $? -ne 0 ] && perror_exit "Failed to mount $_target on $_mnt for kdump preflight check."
|
||||
_mounted=$_mnt
|
||||
else
|
||||
perror_exit "Dump target \"$_target\" is neither mounted nor configured as \"noauto\""
|
||||
fi
|
||||
fi
|
||||
else
|
||||
_mnt=$MKDUMPRD_TMPMNT
|
||||
mkdir -p $_mnt
|
||||
mount $_target $_mnt -t $_fstype -o defaults
|
||||
[ $? -ne 0 ] && perror_exit "Failed to mount $_target for kdump preflight check."
|
||||
_mounted=$_mnt
|
||||
fi
|
||||
|
||||
# For noauto mount, mount it inplace with default value.
|
||||
# Else use the temporary target directory
|
||||
if [[ -n $_mnt ]]; then
|
||||
if ! is_mounted "$_mnt"; then
|
||||
if [[ $_opt == *",noauto"* ]]; then
|
||||
mount "$_mnt" || mount_failure "$_target" "$_mnt" "$_fstype"
|
||||
_mounted=$_mnt
|
||||
else
|
||||
perror_exit "Dump target \"$_target\" is neither mounted nor configured as \"noauto\""
|
||||
fi
|
||||
fi
|
||||
else
|
||||
_mnt=$MKDUMPRD_TMPMNT
|
||||
mkdir -p "$_mnt"
|
||||
mount "$_target" "$_mnt" -t "$_fstype" -o defaults || mount_failure "$_target" "" "$_fstype"
|
||||
_mounted=$_mnt
|
||||
fi
|
||||
# For user configured target, use $SAVE_PATH as the dump path within the target
|
||||
if [ ! -d "$_mnt/$SAVE_PATH" ]; then
|
||||
perror_exit "Dump path \"$SAVE_PATH\" does not exist in dump target \"$_target\""
|
||||
fi
|
||||
|
||||
# For user configured target, use $SAVE_PATH as the dump path within the target
|
||||
if [[ ! -d "$_mnt/$SAVE_PATH" ]]; then
|
||||
perror_exit "Dump path \"$SAVE_PATH\" does not exist in dump target \"$_target\""
|
||||
fi
|
||||
check_size fs "$_target"
|
||||
|
||||
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 $_mounted ]]; then
|
||||
umount -f -- "$_mounted"
|
||||
fi
|
||||
# Unmount it early, if function is interrupted and didn't reach here, the shell trap will clear it up anyway
|
||||
if [ -n "$_mounted" ]; then
|
||||
umount -f -- $_mounted
|
||||
fi
|
||||
}
|
||||
|
||||
# $1: core_collector config value
|
||||
verify_core_collector()
|
||||
{
|
||||
local _cmd="${1%% *}"
|
||||
local _params="${1#${_cmd}}"
|
||||
verify_core_collector() {
|
||||
local _cmd="${1%% *}"
|
||||
local _params="${1#${_cmd}}"
|
||||
|
||||
if [[ $_cmd != "makedumpfile" ]]; then
|
||||
if is_raw_dump_target; then
|
||||
dwarn "Warning: specifying a non-makedumpfile core collector, you will have to recover the vmcore manually."
|
||||
fi
|
||||
return
|
||||
fi
|
||||
if [ "$_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
|
||||
return
|
||||
fi
|
||||
|
||||
if is_ssh_dump_target || is_raw_dump_target; then
|
||||
if ! strstr "$_params" "-F"; then
|
||||
perror_exit 'The specified dump target needs makedumpfile "-F" option.'
|
||||
fi
|
||||
_params="$_params vmcore"
|
||||
else
|
||||
_params="$_params vmcore dumpfile"
|
||||
fi
|
||||
if is_ssh_dump_target || is_raw_dump_target; then
|
||||
if ! strstr "$_params" "-F"; then
|
||||
perror_exit "The specified dump target needs makedumpfile \"-F\" option."
|
||||
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
|
||||
if ! $_cmd --check-params $_params; then
|
||||
perror_exit "makedumpfile parameter check failed."
|
||||
fi
|
||||
}
|
||||
|
||||
add_mount()
|
||||
{
|
||||
local _mnt
|
||||
add_mount() {
|
||||
local _mnt=$(to_mount $@)
|
||||
|
||||
_mnt=$(to_mount "$@") || exit 1
|
||||
if [ $? -ne 0 ]; then
|
||||
exit 1
|
||||
fi
|
||||
|
||||
add_dracut_mount "$_mnt"
|
||||
add_dracut_mount "$_mnt"
|
||||
}
|
||||
|
||||
#handle the case user does not specify the dump target explicitly
|
||||
handle_default_dump_target()
|
||||
{
|
||||
local _target
|
||||
local _mntpoint
|
||||
local _target
|
||||
local _mntpoint
|
||||
|
||||
is_user_configured_dump_target && return
|
||||
is_user_configured_dump_target && return
|
||||
|
||||
check_save_path_fs "$SAVE_PATH"
|
||||
check_save_path_fs $SAVE_PATH
|
||||
|
||||
_save_path=$(get_bind_mount_source "$SAVE_PATH")
|
||||
_target=$(get_target_from_path "$_save_path")
|
||||
_mntpoint=$(get_mntpoint_from_target "$_target")
|
||||
_save_path=$(get_bind_mount_source $SAVE_PATH)
|
||||
_target=$(get_target_from_path $_save_path)
|
||||
_mntpoint=$(get_mntpoint_from_target $_target)
|
||||
|
||||
SAVE_PATH=${_save_path##"$_mntpoint"}
|
||||
add_mount "$_target"
|
||||
check_size fs "$_target"
|
||||
SAVE_PATH=${_save_path##"$_mntpoint"}
|
||||
add_mount "$_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
|
||||
for_each_block_target()
|
||||
{
|
||||
local dev majmin
|
||||
local dev majmin
|
||||
|
||||
for dev in $(get_kdump_targets); do
|
||||
[[ -b $dev ]] || continue
|
||||
majmin=$(get_maj_min "$dev")
|
||||
check_block_and_slaves "$1" "$majmin" && return 1
|
||||
done
|
||||
for dev in $(get_kdump_targets); do
|
||||
[ -b "$dev" ] || continue
|
||||
majmin=$(get_maj_min $dev)
|
||||
check_block_and_slaves $1 $majmin && return 1
|
||||
done
|
||||
|
||||
return 0
|
||||
return 0
|
||||
}
|
||||
|
||||
#judge if a specific device with $1 is unresettable
|
||||
#return false if unresettable.
|
||||
is_unresettable()
|
||||
{
|
||||
local path device resettable=1
|
||||
local path="/sys/$(udevadm info --query=all --path=/sys/dev/block/$1 | awk '/^P:/ {print $2}' | sed -e 's/\(cciss[0-9]\+\/\).*/\1/g' -e 's/\/block\/.*$//')/resettable"
|
||||
local resettable=1
|
||||
|
||||
path="/sys/$(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"
|
||||
if [[ -f $path ]]; then
|
||||
resettable="$(< "$path")"
|
||||
[[ $resettable -eq 0 ]] && [[ $OVERRIDE_RESETTABLE -eq 0 ]] && {
|
||||
device=$(udevadm info --query=all --path="/sys/dev/block/$1" | awk -F= '/DEVNAME/{print $2}')
|
||||
derror "Error: Can not save vmcore because device $device is unresettable"
|
||||
return 0
|
||||
}
|
||||
fi
|
||||
if [ -f "$path" ]
|
||||
then
|
||||
resettable="$(cat $path)"
|
||||
[ $resettable -eq 0 -a "$OVERRIDE_RESETTABLE" -eq 0 ] && {
|
||||
local device=$(udevadm info --query=all --path=/sys/dev/block/$1 | awk -F= '/DEVNAME/{print $2}')
|
||||
derror "Error: Can not save vmcore because device $device is unresettable"
|
||||
return 0
|
||||
}
|
||||
fi
|
||||
|
||||
return 1
|
||||
return 1
|
||||
}
|
||||
|
||||
#check if machine is resettable.
|
||||
#return true if resettable
|
||||
check_resettable()
|
||||
{
|
||||
local _target _override_resettable
|
||||
local _ret _target
|
||||
|
||||
_override_resettable=$(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 '$OVERRIDE_RESETTABLE' is invalid"
|
||||
fi
|
||||
get_override_resettable
|
||||
|
||||
for_each_block_target is_unresettable && return
|
||||
for_each_block_target is_unresettable
|
||||
_ret=$?
|
||||
|
||||
return 1
|
||||
[ $_ret -eq 0 ] && return
|
||||
|
||||
return 1
|
||||
}
|
||||
|
||||
check_crypt()
|
||||
{
|
||||
local _dev
|
||||
local _dev
|
||||
|
||||
for _dev in $(get_kdump_targets); do
|
||||
if [[ -n $(get_luks_crypt_dev "$(get_maj_min "$_dev")") ]]; then
|
||||
derror "Device $_dev is encrypted." && return 1
|
||||
fi
|
||||
done
|
||||
for _dev in $(get_kdump_targets); do
|
||||
if [[ -n $(get_luks_crypt_dev "$(get_maj_min "$_dev")") ]]; then
|
||||
derror "Device $_dev is encrypted." && return 1
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
if ! check_resettable; then
|
||||
exit 1
|
||||
exit 1
|
||||
fi
|
||||
|
||||
if ! check_crypt; then
|
||||
dwarn "Warning: Encrypted device is in dump path, which is not recommended, see kexec-kdump-howto.txt for more details."
|
||||
dwarn "Warning: Encrypted device is in dump path. User will prompted for password during second kernel boot."
|
||||
fi
|
||||
|
||||
# firstly get right SSH_KEY_LOCATION
|
||||
keyfile=$(kdump_get_conf_val sshkey)
|
||||
if [[ -f $keyfile ]]; then
|
||||
# canonicalize the path
|
||||
SSH_KEY_LOCATION=$(/usr/bin/readlink -m "$keyfile")
|
||||
keyfile=$(awk '/^sshkey/ {print $2}' $conf_file)
|
||||
if [ -f "$keyfile" ]; then
|
||||
# canonicalize the path
|
||||
SSH_KEY_LOCATION=$(/usr/bin/readlink -m $keyfile)
|
||||
fi
|
||||
|
||||
while read -r config_opt config_val; do
|
||||
# remove inline comments after the end of a directive.
|
||||
case "$config_opt" in
|
||||
extra_modules)
|
||||
extra_modules="$extra_modules $config_val"
|
||||
;;
|
||||
ext[234] | xfs | btrfs | minix | nfs | virtiofs)
|
||||
check_user_configured_target "$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 || {
|
||||
perror_exit "Bad raw disk $config_val"
|
||||
}
|
||||
_praw=$(persistent_policy="by-id" kdump_get_persistent_dev "$config_val")
|
||||
if [[ -z $_praw ]]; then
|
||||
exit 1
|
||||
fi
|
||||
add_dracut_arg "--device" "$_praw"
|
||||
check_size raw "$config_val"
|
||||
;;
|
||||
ssh)
|
||||
if strstr "$config_val" "@"; then
|
||||
mkdir_save_path_ssh "$config_val"
|
||||
check_size ssh "$config_val"
|
||||
add_dracut_sshkey "$SSH_KEY_LOCATION"
|
||||
else
|
||||
perror_exit "Bad ssh dump target $config_val"
|
||||
fi
|
||||
;;
|
||||
core_collector)
|
||||
verify_core_collector "$config_val"
|
||||
;;
|
||||
dracut_args)
|
||||
|
||||
# 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 "$config_val" | xargs -n 1 echo)"
|
||||
;;
|
||||
*) ;;
|
||||
|
||||
esac
|
||||
done <<< "$(kdump_read_conf)"
|
||||
while read config_opt config_val;
|
||||
do
|
||||
# remove inline comments after the end of a directive.
|
||||
case "$config_opt" in
|
||||
extra_modules)
|
||||
extra_modules="$extra_modules $config_val"
|
||||
;;
|
||||
ext[234]|xfs|btrfs|minix|nfs)
|
||||
check_user_configured_target "$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 || {
|
||||
perror_exit "Bad raw disk $config_val"
|
||||
}
|
||||
_praw=$(persistent_policy="by-id" kdump_get_persistent_dev $config_val)
|
||||
if [ -z "$_praw" ]; then
|
||||
exit 1
|
||||
fi
|
||||
add_dracut_arg "--device" "$_praw"
|
||||
check_size raw $config_val
|
||||
;;
|
||||
ssh)
|
||||
if strstr "$config_val" "@";
|
||||
then
|
||||
mkdir_save_path_ssh $config_val
|
||||
check_size ssh $config_val
|
||||
add_dracut_sshkey "$SSH_KEY_LOCATION"
|
||||
else
|
||||
perror_exit "Bad ssh dump target $config_val"
|
||||
fi
|
||||
;;
|
||||
core_collector)
|
||||
verify_core_collector "$config_val"
|
||||
;;
|
||||
dracut_args)
|
||||
add_dracut_arg $config_val
|
||||
;;
|
||||
*)
|
||||
;;
|
||||
esac
|
||||
done <<< "$(read_strip_comments $conf_file)"
|
||||
|
||||
handle_default_dump_target
|
||||
|
||||
if ! have_compression_in_dracut_args; then
|
||||
if is_squash_available && dracut_have_option "--squash-compressor"; then
|
||||
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"
|
||||
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
|
||||
@ -458,9 +438,9 @@ fi
|
||||
# parameter available in fadump case. So, find a way to fix that first
|
||||
# before removing this check.
|
||||
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)")"
|
||||
# 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 $(get_root_fs_device))"
|
||||
|
||||
add_dracut_arg "--no-hostonly-default-device"
|
||||
|
||||
@ -469,13 +449,4 @@ if ! is_fadump_capable; then
|
||||
fi
|
||||
fi
|
||||
|
||||
# This is RHEL-only to work around nvme problem, then real fix should go to dracut
|
||||
if [[ -d /sys/module/nvme ]]; then
|
||||
add_dracut_arg "--add-drivers" "nvme"
|
||||
fi
|
||||
|
||||
dracut "${dracut_args[@]}" "$@"
|
||||
|
||||
_rc=$?
|
||||
sync
|
||||
exit $_rc
|
||||
echo "$dracut_args $@" | xargs dracut
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
# Generate an initramfs image that isolates dump capture capability within
|
||||
# the default initramfs using zz-fadumpinit dracut module.
|
||||
|
||||
if [[ -f /etc/sysconfig/kdump ]]; then
|
||||
if [ -f /etc/sysconfig/kdump ]; then
|
||||
. /etc/sysconfig/kdump
|
||||
fi
|
||||
|
||||
@ -17,7 +17,7 @@ if ! dlog_init; then
|
||||
exit 1
|
||||
fi
|
||||
|
||||
MKFADUMPRD_TMPDIR="$(mktemp -d -t mkfadumprd.XXXXXX)"
|
||||
readonly MKFADUMPRD_TMPDIR="$(mktemp -d -t mkfadumprd.XXXXXX)"
|
||||
[ -d "$MKFADUMPRD_TMPDIR" ] || perror_exit "mkfadumprd: mktemp -d -t mkfadumprd.XXXXXX failed."
|
||||
trap '
|
||||
ret=$?;
|
||||
@ -38,37 +38,27 @@ FADUMP_INITRD="$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"
|
||||
# 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
|
||||
if ! $MKDUMPRD "$FADUMP_INITRD" -i "$MKFADUMPRD_TMPDIR/fadump.initramfs" /etc/fadump.initramfs; then
|
||||
perror_exit "mkfadumprd: failed to build image with dump capture support"
|
||||
fi
|
||||
|
||||
### Unpack the initramfs having dump capture capability retaining previous file modification time.
|
||||
# This helps in saving space by hardlinking identical files.
|
||||
### Unpack the initramfs having dump capture capability
|
||||
mkdir -p "$MKFADUMPRD_TMPDIR/fadumproot"
|
||||
if ! cpio -id --preserve-modification-time --quiet -D "$MKFADUMPRD_TMPDIR/fadumproot" < "$FADUMP_INITRD"; then
|
||||
if ! (pushd "$MKFADUMPRD_TMPDIR/fadumproot" > /dev/null && lsinitrd --unpack "$FADUMP_INITRD" && \
|
||||
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
|
||||
-i "$MKFADUMPRD_TMPDIR/fadumproot" /fadumproot
|
||||
-i "$MKFADUMPRD_TMPDIR/fadumproot/usr/lib/dracut/hostonly-kernel-modules.txt"
|
||||
/usr/lib/dracut/fadump-kernel-modules.txt
|
||||
)
|
||||
_dracut_isolate_args="--rebuild $REBUILD_INITRD --add zz-fadumpinit \
|
||||
-i $MKFADUMPRD_TMPDIR/fadumproot /fadumproot \
|
||||
-i $MKFADUMPRD_TMPDIR/fadumproot/usr/lib/dracut/loaded-kernel-modules.txt
|
||||
/usr/lib/dracut/fadump-kernel-modules.txt"
|
||||
|
||||
# Use zstd compression method, if available
|
||||
if ! have_compression_in_dracut_args; then
|
||||
if is_zstd_command_available; then
|
||||
_dracut_isolate_args+=(--compress zstd)
|
||||
fi
|
||||
if is_squash_available; then
|
||||
_dracut_isolate_args="$_dracut_isolate_args --add squash"
|
||||
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
|
||||
|
||||
@ -0,0 +1,13 @@
|
||||
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 $(PURGATORY_SRCS)"
|
||||
@ -0,0 +1,51 @@
|
||||
From ce720608d5933e62f77f2c2f216859cf4f06adf8 Mon Sep 17 00:00:00 2001
|
||||
From: Kairui Song <kasong@redhat.com>
|
||||
Date: Wed, 13 Feb 2019 00:03:51 +0800
|
||||
Subject: [PATCH] Fix eppic issue with hardening flags
|
||||
|
||||
This is stash of two commits:
|
||||
|
||||
commit f98cf5fe07f390554696755f0a5843f6bb9c4716
|
||||
Author: ryncsn <ryncsn@gmail.com>
|
||||
Date: Tue Mar 19 13:39:25 2019 +0800
|
||||
|
||||
Tell gcc not to omit frame pointer
|
||||
|
||||
After commit 0209874, it's now possible to enable optimization above O0.
|
||||
But eppic might call __builtin_return_address(1). With O1,
|
||||
-fomit-frame-pointer is enabled gcc may omit frame pointer.
|
||||
__builtin_return_address(1) relies on callee preserves RBP as the stack
|
||||
base, which is untrue if optimization is usded. In this case it may return
|
||||
wrong value or crash.
|
||||
|
||||
In case of any potential failure, use -fno-omit-frame-pointer globally.
|
||||
|
||||
Signed-off-by: Kairui Song <ryncsn@gmail.com>
|
||||
|
||||
commit 0209874f4b46b8af5a2d42662ba6775cf5a1dc44
|
||||
Author: Kairui Song <kasong@redhat.com>
|
||||
Date: Wed Feb 13 00:03:51 2019 +0800
|
||||
|
||||
Drop O0 CFLAGS override in Makefile
|
||||
|
||||
Signed-off-by: Kairui Song <kasong@redhat.com>
|
||||
---
|
||||
libeppic/Makefile | 2 +-
|
||||
1 file changed, 1 insertion(+), 1 deletion(-)
|
||||
|
||||
diff --git a/libeppic/Makefile b/libeppic/Makefile
|
||||
index bcf2edf..8b97c87 100644
|
||||
--- a/eppic/libeppic/Makefile
|
||||
+++ b/eppic/libeppic/Makefile
|
||||
@@ -24,7 +24,7 @@ LDIRT = lex.eppic.c lex.eppicpp.c eppic.tab.c eppic.tab.h eppicpp.tab.c \
|
||||
LIBDIR = /usr/lib
|
||||
TARGETS = libeppic.a
|
||||
|
||||
-CFLAGS += -O0 -g -fPIC
|
||||
+CFLAGS += -g -fno-omit-frame-pointer -fPIC
|
||||
ifeq ($(TARGET), PPC64)
|
||||
CFLAGS += -m64
|
||||
endif
|
||||
--
|
||||
2.20.1
|
||||
|
||||
@ -0,0 +1,88 @@
|
||||
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
|
||||
|
||||
@ -40,24 +40,24 @@ storage:
|
||||
FC disks (qla2xxx, lpfc, bnx2fc, bfa)
|
||||
software initiator based iSCSI
|
||||
software RAID (mdraid)
|
||||
hardware RAID (smartpqi, hpsa, megaraid, mpt3sas, aacraid, mpi3mr)
|
||||
hardware RAID (cciss, hpsa, megaraid_sas, mpt2sas, aacraid)
|
||||
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: (igb, ixgbe, ice, i40e, e1000e, igc,
|
||||
tg3, bnx2x, bnxt_en, qede, cxgb4, be2net, enic, sfc, mlx4_en,
|
||||
mlx5_core, r8169, atlantic, nfp, ionic; nicvf (aarch64 only))
|
||||
Hardware using kernel modules: (tg3, igb, ixgbe, sfc, e1000e, bna,
|
||||
cnic, netxen_nic, qlge, bnx2x, bnx, qlcnic, be2net, enic,
|
||||
virtio-net, ixgbevf, igbvf)
|
||||
protocol: ipv4
|
||||
bonding
|
||||
vlan
|
||||
bridge
|
||||
team
|
||||
vlan tagged bonding
|
||||
bridge over bond/vlan
|
||||
bridge over bond/team/vlan
|
||||
|
||||
hypervisor:
|
||||
kvm
|
||||
@ -67,17 +67,14 @@ filesystem:
|
||||
ext[234]
|
||||
xfs
|
||||
nfs
|
||||
virtiofs
|
||||
|
||||
firmware:
|
||||
BIOS
|
||||
UEFI
|
||||
|
||||
hypervisor:
|
||||
VMWare ESXi 4.x 5.x would not be tested/supported any more.
|
||||
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
|
||||
VMWare ESXi 4.1 and 5.1
|
||||
Hyper-V 2012 R2 (RHEL Gen1 UP Guest only)
|
||||
|
||||
Unsupported Dump targets
|
||||
------------------------
|
||||
@ -117,5 +114,15 @@ 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)
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
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Reference in New Issue
Block a user