void-packages/srcpkgs/runit-kdump/files/90-kdump.sh

33 lines
1.1 KiB
Bash

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