Commit 73763d40 authored by Artur Paszkiewicz's avatar Artur Paszkiewicz Committed by Tomasz Zawadzki
Browse files

module/raid: raid5 module 



Add raid5 module and unit tests. Use './configure' with option
'--with-raid5' to enable it.

Change-Id: I9f07da8c3567fa65499444899c899adaa2e29550
Signed-off-by: default avatarArtur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/855


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarShuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: default avatarDarek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: default avatarPaul Luse <paul.e.luse@intel.com>
parent b992bb4e

CONFIG

+3 −0
Original line number Diff line number Diff line
@@ -160,3 +160,6 @@ CONFIG_URING_PATH= 


# Build with FUSE support

CONFIG_FUSE=n



# Build with RAID5 support

CONFIG_RAID5=n

configure

+8 −0
Original line number Diff line number Diff line
@@ -96,6 +96,8 @@ function usage() 
	echo "                           No path required."

	echo " nvme-cuse                 Build NVMe driver with support for CUSE-based character devices."

	echo "                           No path required."

	echo " raid5                     Build with bdev_raid module RAID5 support."

	echo "                           No path required."

	echo ""

	echo "Environment variables:"

	echo ""
@@ -409,6 +411,12 @@ for i in "$@"; do 
		--without-nvme-cuse)

			CONFIG[NVME_CUSE]=n

			;;

		--with-raid5)

			CONFIG[RAID5]=y

			;;

		--without-raid5)

			CONFIG[RAID5]=n

			;;

		--)

			break

			;;

module/bdev/raid/Makefile

+5 −0
Original line number Diff line number Diff line
@@ -36,6 +36,11 @@ include $(SPDK_ROOT_DIR)/mk/spdk.common.mk 


CFLAGS += -I$(SPDK_ROOT_DIR)/lib/bdev/

C_SRCS = bdev_raid.c bdev_raid_rpc.c raid0.c



ifeq ($(CONFIG_RAID5),y)

C_SRCS += raid5.c

endif



LIBNAME = bdev_raid



include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

module/bdev/raid/bdev_raid.c

+2 −0
Original line number Diff line number Diff line
@@ -846,6 +846,8 @@ static struct { 
} g_raid_level_names[] = {

	{ "raid0", RAID0 },

	{ "0", RAID0 },

	{ "raid5", RAID5 },

	{ "5", RAID5 },

	{ }

};

module/bdev/raid/bdev_raid.h

+10 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
enum raid_level {

	INVALID_RAID_LEVEL	= -1,

	RAID0			= 0,

	RAID5			= 5,

};



/*
@@ -162,6 +163,9 @@ struct raid_bdev { 


	/* Module for RAID-level specific operations */

	struct raid_bdev_module		*module;



	/* Private data for the raid module */

	void				*module_private;

};



#define RAID_FOR_EACH_BASE_BDEV(r, i) \
@@ -262,6 +266,12 @@ struct raid_bdev_module { 
	/* Minimum required number of base bdevs. Must be > 0. */

	uint8_t base_bdevs_min;



	/*

	 * Maximum number of base bdevs that can be removed without failing

	 * the array.

	 */

	uint8_t base_bdevs_max_degraded;



	/*

	 * Called when the raid is starting, right before changing the state to

	 * online and registering the bdev. Parameters of the bdev like blockcnt