kdumpst/initramfs/dracut/module-setup.sh.in

#  Only include kdump if it is explicitly asked in the argument list
check() {
	return 255
}

installkernel() {
	load_kdumpst_config

	#  First clear all unnecessary firmwares/drivers added by drm in order
	#  to reduce the size of the minimal initramfs being created - kdump
	#  is an non-graphical environment. This should have been already done
	#  via dracut cmdline arguments, but play safe and delete here as well.
	#  Our list includes the most common GFX FW blobs (AMD, i915, Nvidia)
	#  and all GPU/DRM drivers.
	rm -rf "$initdir"/usr/lib/firmware/{amdgpu,i915,nvidia,radeon}/
	rm -rf "$initdir"/usr/lib/modules/*/kernel/drivers/gpu/drm/*

	FSMOD="$(findmnt -n -o FSTYPE --target "${MOUNT_FOLDER}")"
	if [ -z "${FSMOD}" ]; then
		logger "kdumpst: error on filesystem discovery"
		exit 1
	fi

	instmods "${FSMOD}"

	#  We try here to be comprehensive and include the most common
	#  block modules to allow mounting the target device - notice
	#  that since we use hostonly, only the ones that make sense would
	#  get added, hence this list won't bloat the minimal image!
	instmods aacraid
	instmods ahci
	instmods hpsa
	instmods megaraid_sas
	instmods mpt3sas
	instmods nvme
	instmods virtio_blk
	instmods virtio-scsi
}

install() {
	# A valid makedumpfile is essential for the kdump initrd creation.
	if ! command -v makedumpfile 1>/dev/null; then
		logger "kdumpst: failed to create dracut initrd, makedumpfile is missing"
		exit 1
	fi

	load_kdumpst_config

	#  Install necessary binaries
	inst date
	inst sync
	inst makedumpfile

	#  Copying kdumpst config/lib files is essential for a functional kdump.
	cp -LR --preserve=all /usr/share/kdumpst.d/ "$initdir"/usr/share/
	cp -LR --preserve=all /usr/lib/kdumpst/ "$initdir"/usr/lib/

	#  Finally, we need to derive the proper place to save the dump from the
	#  config files, in a way that makes possible to mount it in early boot.
	DEVNODE="$(findmnt -n -o SOURCE --target "${MOUNT_FOLDER}")"
	if [ -z "${DEVNODE}" ]; then
		logger "kdumpst: error on devnode discovery"
		exit 1
	fi
	echo "${DEVNODE}" > "$initdir"/usr/lib/kdumpst/kdump.mnt

	TGT="$(findmnt -n -o TARGET --target "${MOUNT_FOLDER}")"
	if [ -z "${TGT}" ]; then
		logger "kdumpst: error on base folder discovery"
		exit 1
	fi

	BASE_FLD="${MOUNT_FOLDER#*$TGT}"
	echo "${BASE_FLD}" > "$initdir"/usr/lib/kdumpst/kdump.dir

	inst_hook pre-mount 01 "$moddir/kdump-collect.sh"
}