New package: runit-kdump-20150226

This commit is contained in:
Christian Neukirchen 2015-02-26 20:53:11 +01:00
parent 91a8fad34a
commit 31ce88c14a
3 changed files with 55 additions and 0 deletions

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To enable loading the crash kernel, append crashkernel=128M to the
Linux command line.
By default, crash dumping will use the default initrd and dump in
runit stage 1 to /var/crash.
You can place a custom initrd used for crash dumping as
/boot/initramfs-${KERNELVERSION}kdump.img.

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if [ -e /proc/vmcore ] && ! grep -q nokdump /proc/cmdline ; then
DIR="/var/crash/$(date +%Y%m%d-%H%M%S)"
msg "Found kernel crash dump, saving vmcore to $DIR...\n"
mkdir -p "$DIR"
makedumpfile -l --message-level 1 -d 31 /proc/vmcore "$DIR"/vmcore.incomplete &&
mv "$DIR"/vmcore.incomplete "$DIR"/vmcore
msg "Found kernel crash dump, saving dmesg to $DIR...\n"
vmcore-dmesg /proc/vmcore >"$DIR"/vmcore-dmesg.txt.incomplete &&
mv "$DIR"/vmcore-dmesg.txt.incomplete "$DIR"/vmcore-dmesg.txt
sync
touch /run/runit/reboot
msg "Crash dump done, triggering reboot.\n"
exit 100 # force reboot
fi
if [ $(cat /sys/kernel/kexec_crash_size) = 0 ]; then
msg_warn "Loading crash kernel skipped, booted without crashkernel=NNN.\n"
else
KVER="$(uname -r)"
if [ -f /boot/initramfs-${KVER}kdump.img ]; then
INITRD=/boot/initramfs-${KVER}kdump.img
else
INITRD=/boot/initramfs-${KVER}.img
fi
APPEND="irqpoll nr_cpus=1 maxcpus=1 reset_devices udev.children-max=2 panic=10 cgroup_disable=memory mce=off numa=off"
msg "Loading crash kernel..."
kexec --load-panic /boot/vmlinuz-${KVER} \
--initrd="$INITRD" --reuse-cmdline --append="$APPEND" &&
msg_ok
fi

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# Template file for 'runit-kdump'
pkgname=runit-kdump
version=20150226
revision=1
noarch=yes
make_dirs="/var/crash 0755 root root"
depends="runit-void makedumpfile kexec-tools"
short_desc="Crashkernel/kdump support for runit to save vmcore to disk"
maintainer="Christian Neukirchen <chneukirchen@gmail.com>"
license="Public Domain"
homepage="http://www.voidlinux.eu/"
do_install() {
vinstall ${FILESDIR}/90-kdump.sh 0644 etc/runit/core-services
}