1704064885
Kdump service starts too late, so early crashes will have no chance to get kdump kernel booting, this will cause crash information to be lost. It is necessary to add a dracut module in order to load crash kernel and initramfs as early as possible. You can provide "rd.early kdump" in grub commandline to enable, then the early kdump will load those files like the normal kdump, which is disabled by default. For the normal kdump service, it can check whether the early kdump has loaded the crash kernel and initramfs. It has no conflict with the early kdump. If you rebuild the new initramfs for early kdump, the new initramfs size will become large, because it will put the vmlinuz and kdump initramfs into the new initramfs. In addition, early kdump doesn't support fadump. Signed-off-by: Lianbo Jiang <lijiang@redhat.com> Reviewed-by: Kazuhito Hagio <khagio@redhat.com> Acked-by: Dave Young <dyoung@redhat.com>
45 lines
1.0 KiB
Bash
Executable File
45 lines
1.0 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
. /etc/sysconfig/kdump
|
|
. /lib/kdump/kdump-lib.sh
|
|
|
|
KDUMP_KERNEL=""
|
|
KDUMP_INITRD=""
|
|
|
|
check() {
|
|
if [ ! -f /etc/sysconfig/kdump ] || [ ! -f /lib/kdump/kdump-lib.sh ]\
|
|
|| [ -n "${IN_KDUMP}" ]
|
|
then
|
|
return 1
|
|
fi
|
|
return 255
|
|
}
|
|
|
|
depends() {
|
|
echo "base shutdown"
|
|
return 0
|
|
}
|
|
|
|
prepare_kernel_initrd() {
|
|
KDUMP_BOOTDIR=$(check_boot_dir "${KDUMP_BOOTDIR}")
|
|
if [ -z "$KDUMP_KERNELVER" ]; then
|
|
kdump_kver=`uname -r`
|
|
else
|
|
kdump_kver=$KDUMP_KERNELVER
|
|
fi
|
|
KDUMP_KERNEL="${KDUMP_BOOTDIR}/${KDUMP_IMG}-${kdump_kver}${KDUMP_IMG_EXT}"
|
|
KDUMP_INITRD="${KDUMP_BOOTDIR}/initramfs-${kdump_kver}kdump.img"
|
|
}
|
|
|
|
install() {
|
|
inst_multiple tail find cut dirname hexdump
|
|
inst_simple "/etc/sysconfig/kdump"
|
|
inst_binary "/usr/sbin/kexec"
|
|
inst_binary "/usr/bin/gawk" "/usr/bin/awk"
|
|
inst_script "/lib/kdump/kdump-lib.sh" "/lib/kdump-lib.sh"
|
|
inst_hook cmdline 00 "$moddir/early-kdump.sh"
|
|
prepare_kernel_initrd
|
|
inst_binary "$KDUMP_KERNEL"
|
|
inst_binary "$KDUMP_INITRD"
|
|
}
|