Commit f45c0075 authored by Artur Paszkiewicz's avatar Artur Paszkiewicz Committed by Jim Harris
Browse files

ftl: superblock in shared memory 



Signed-off-by: default avatarArtur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: default avatarKozlowski Mateusz <mateusz.kozlowski@intel.com>
Change-Id: I86e2cbf364ae3075aad2e09429754027df33eadf
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13342


Community-CI: Mellanox Build Bot
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
parent 818b9c05

lib/ftl/ftl_core.h

+7 −0
Original line number Diff line number Diff line
@@ -47,6 +47,10 @@ struct spdk_ftl_dev { 
	/* FTL superblock */

	struct ftl_superblock		*sb;



	/* FTL shm superblock */

	struct ftl_superblock_shm	*sb_shm;

	struct ftl_md			*sb_shm_md;



	/* Queue of registered IO channels */

	TAILQ_HEAD(, ftl_io_channel)	ioch_queue;
@@ -145,6 +149,9 @@ struct spdk_ftl_dev { 


	/* Writer for GC IOs */

	struct ftl_writer		writer_gc;



	/* Retry init sequence */

	bool				init_retry;

};



void ftl_apply_limits(struct spdk_ftl_dev *dev);

lib/ftl/ftl_init.c

+12 −0
Original line number Diff line number Diff line
@@ -132,8 +132,20 @@ static void 
dev_init_cb(struct spdk_ftl_dev *dev, void *_ctx, int status)

{

	struct ftl_dev_init_ctx *ctx = _ctx;

	int rc;



	if (status) {

		if (dev->init_retry) {

			FTL_NOTICELOG(dev, "Startup retry\n");

			rc = spdk_ftl_dev_init(&dev->conf, ctx->cb_fn, ctx->cb_arg);

			if (!rc) {

				free_dev(dev);

				free(ctx);

				return;

			}

			FTL_NOTICELOG(dev, "Startup retry failed: %d\n", rc);

		}



		free_dev(dev);

		dev = NULL;

	}

lib/ftl/ftl_sb_common.h

+17 −0
Original line number Diff line number Diff line
@@ -47,4 +47,21 @@ struct ftl_superblock_md_region { 
	uint64_t		blk_sz;

};



struct ftl_superblock_shm {

	/* SHM initialization completed */

	bool				shm_ready;



	/* SHM status - fast restart */

	bool				shm_clean;



	/* Used to continue trim after SHM recovery */

	struct {

		bool			in_progress;

		uint64_t		start_lba;

		uint64_t		num_blocks;

	} trim;



	struct ftl_superblock_gc_info	gc_info;

};



#endif /* FTL_SB_COMMON_H */

lib/ftl/mngt/ftl_mngt_md.c

+18 −0
Original line number Diff line number Diff line
@@ -170,6 +170,7 @@ ftl_mngt_init_default_sb(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt 
	sb->header.version = FTL_METADATA_VERSION_CURRENT;

	sb->uuid = dev->conf.uuid;

	sb->clean = 0;

	dev->sb_shm->shm_clean = false;



	/* Max 16 IO depth per band relocate */

	sb->max_reloc_qdepth = 16;
@@ -191,6 +192,7 @@ ftl_mngt_set_dirty(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt) 
	struct ftl_superblock *sb = dev->sb;



	sb->clean = 0;

	dev->sb_shm->shm_clean = false;

	sb->header.crc = get_sb_crc(sb);

	persist(dev, mngt, FTL_LAYOUT_REGION_TYPE_SB);

}
@@ -258,6 +260,18 @@ ftl_mngt_superblock_init(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt 
		FTL_NOTICELOG(dev, "Create new FTL, UUID %s\n", uuid);

	}



	/* Allocate md buf */

	dev->sb_shm = NULL;

	dev->sb_shm_md = ftl_md_create(dev, spdk_divide_round_up(sizeof(*dev->sb_shm), FTL_BLOCK_SIZE),

				       0, "sb_shm",

				       md_create_flags, NULL);

	if (dev->sb_shm_md == NULL) {

		ftl_mngt_fail_step(mngt);

		return;

	}



	dev->sb_shm = ftl_md_get_buffer(dev->sb_shm_md);



	/* Setup the layout of a superblock */

	if (ftl_layout_setup_superblock(dev)) {

		ftl_mngt_fail_step(mngt);
@@ -308,5 +322,9 @@ ftl_mngt_superblock_deinit(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mn 
		layout->md[FTL_LAYOUT_REGION_TYPE_SB_BASE] = NULL;

	}



	ftl_md_destroy(dev->sb_shm_md);

	dev->sb_shm_md = NULL;

	dev->sb_shm = NULL;



	ftl_mngt_next_step(mngt);

}

lib/ftl/mngt/ftl_mngt_misc.c

+1 −0
Original line number Diff line number Diff line
@@ -139,6 +139,7 @@ void 
ftl_mngt_finalize_startup(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt)

{

	dev->initialized = 1;

	dev->sb_shm->shm_ready = true;



	ftl_writer_resume(&dev->writer_user);

	ftl_writer_resume(&dev->writer_gc);