144 lines
3.2 KiB
Bash
144 lines
3.2 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: - 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=/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_ARGS=""
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KDUMP_CONFIG_FILE="/etc/kdump.conf"
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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 $coredir/vmcore
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}
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function check_config()
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{
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if [ -z "$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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#check to see if config file has been modified after
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#last build of the image file
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config_time=0
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if [ -f $KDUMP_CONFIG_FILE ]; then
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config_time=`stat -c "%Y" $KDUMP_CONFIG_FILE`
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fi
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kernel_time=`stat -c "%Y" $kdump_kernel`
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image_time=`stat -c "%Y" $kdump_initrd`
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if [ "$config_time" -gt "$image_time" ] ||
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[ "$kernel_time" -gt "$image_time" ]; then
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echo "Detected $KDUMP_CONFIG_FILE or $kdump_kernel change"
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echo "Rebuilding $kdump_initrd"
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/sbin/mkdumprd -d -f $kdump_initrd $kdump_kver
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fi
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#hack until we stop making initrd for kdump during rpm install
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#allow initrd 120 seconds to be created before considering it new
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module_time=`stat -c "%Y" /lib/modules/${kdump_kver}`
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let module_time=module_time+120
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if [ ! "$image_time" -gt "$module_time" ]; then
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echo "Detected initial rpm install"
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echo "Rebuilding $kdump_initrd"
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/sbin/mkdumprd -d -f $kdump_initrd $kdump_kver
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fi
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}
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# Load the kdump kerel specified in /etc/sysconfig/kdump
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# If none is specified, try to load a kdump kernel with the same version
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# as the currently running kernel.
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function load_kdump()
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{
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if [ -z "$KDUMP_COMMANDLINE" ]; then
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KDUMP_COMMANDLINE=`cat /proc/cmdline`
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KDUMP_COMMANDLINE=`echo $KDUMP_COMMANDLINE | sed -e 's/crashkernel=[0-9]\+M@[0-9]\+M//g'`
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KDUMP_COMMANDLINE="${KDUMP_COMMANDLINE} irqpoll"
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fi
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$KEXEC $KEXEC_ARGS $standard_kexec_args \
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--command-line="$KDUMP_COMMANDLINE" \
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--initrd=$kdump_initrd $kdump_kernel
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}
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case "$1" in
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start)
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if [ -f /proc/vmcore ]; then
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save_core
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reboot
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else
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#TODO check raw partition for core dump image
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check_config
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load_kdump
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fi
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;;
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stop)
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$KEXEC -p -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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$KEXEC -p -u
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check_config
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load_kdump
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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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