111 lines
2.3 KiB
Bash
111 lines
2.3 KiB
Bash
#! /bin/sh
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#
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# kdump
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#
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# Description: The kdump init script provides the support necessary for
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# loading a kdump kernel into memory at system bootup time,
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# and for copying away a vmcore at system panic time.
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#
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# Copyright 2005 Red Hat, Inc.
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#
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# chkconfig: 2345 20 80
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#
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# Author: Jeff Moyer <jmoyer@redhat.com>
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# Source function library.
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. /etc/init.d/functions
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KEXEC=/usr/sbin/kexec
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# Will be different for ia64, for example. For now, that architecture isn't
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# supported. Code needs to be added here when we do.
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BOOTDIR="/boot"
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KDUMP_KERNELVER=""
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KDUMP_COMMANDLINE=""
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# KEXEC_HEADERS will not be in the sysconfig file by default
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KEXEC_HEADERS="--elf32-core-headers"
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KEXEC_ARGS=""
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standard_kexec_args="-p --args-linux"
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if [ -f /etc/sysconfig/kdump ]; then
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. /etc/sysconfig/kdump
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fi
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function save_core()
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{
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coredir="/var/crash/`date +"%Y-%m-%d-%H:%M"`"
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mkdir -p $coredir
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cp /proc/vmcore $coredir/vmcore
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}
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# Load the kdump kerel specified in /etc/sysconfig/kdump
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# If none is specified, try to load a kdump kernel with the same version
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# as the currently running kernel.
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function load_kdump()
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{
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if [ -z "$KDUMP_KERNELVER" ]; then
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local running_kernel=`uname -r`
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kdump_kver=`echo $running_kernel | sed 's/smp//g'`
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kdump_kver="${kdump_kver}kdump"
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else
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kdump_kver=$KDUMP_KERNELVER
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fi
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kdump_kernel="${BOOTDIR}/vmlinux-${kdump_kver}"
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kdump_initrd="${BOOTDIR}/initrd-${kdump_kver}.img"
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if [ ! -f $kdump_kernel ]; then
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echo -n "No kdump kernel image found."; warning; echo
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echo -n "Tried to locate ${kdump_kernel}"
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exit 0
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fi
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if [ ! -f $kdump_initrd ]; then
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echo "No kdump initial ramdisk found."
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echo "Tried to locate ${kdump_initrd}"
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return 1
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fi
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if [ -z "$KDUMP_COMMANDLINE" ]; then
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KDUMP_COMMANDLINE=`cat /proc/cmdline`
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KDUMP_COMMANDLINE=`echo $KDUMP_COMMANDLINE | sed -e 's/crashkernel=[0-9]\+M@[0-9]\+M//g'`
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fi
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$KEXEC $KEXEC_ARGS $standard_kexec_args $KEXEC_HEADERS \
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"--command-line=\"$KDUMP_COMMANDLINE\"" \
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--initrd=$kdump_initrd $kdump_kernel
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}
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case "$1" in
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start)
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if [ -f /proc/vmcore ]; then
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save_core
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reboot
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else
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load_kdump
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fi
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;;
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stop)
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$KEXEC -u
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;;
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status)
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echo "not implemented"
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;;
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restart)
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echo "not implemented"
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;;
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condrestart)
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;;
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*)
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echo $"Usage: $0 {start|stop|status|restart}"
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exit 1
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esac
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exit $?
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