Commit 78c3cbf4 authored by Artur Paszkiewicz's avatar Artur Paszkiewicz Committed by Jim Harris
Browse files

ftl: metadata for unmap support 



Setup trim metadata layout.

Signed-off-by: default avatarArtur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: default avatarKozlowski Mateusz <mateusz.kozlowski@intel.com>
Change-Id: I9395119cb8d5f7a5de4fde7b3f9506eb06452d7b
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13377


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 ea80f87e

lib/ftl/ftl_layout.c

+33 −1
Original line number Diff line number Diff line
@@ -128,7 +128,7 @@ static int 
setup_layout_nvc(struct spdk_ftl_dev *dev)

{

	int region_type;

	uint64_t left, offset = 0;

	uint64_t left, offset = 0, l2p_blocks;

	struct ftl_layout *layout = &dev->layout;

	struct ftl_layout_region *region, *mirror;

	static const char *p2l_region_name[] = {
@@ -222,6 +222,38 @@ setup_layout_nvc(struct spdk_ftl_dev *dev) 
		offset += region->current.blocks;

	}



	/*

	 * Initialize trim metadata region

	 */

	if (offset >= layout->nvc.total_blocks) {

		goto error;

	}

	l2p_blocks = layout->region[FTL_LAYOUT_REGION_TYPE_L2P].current.blocks;

	region = &layout->region[FTL_LAYOUT_REGION_TYPE_TRIM_MD];

	region->type = FTL_LAYOUT_REGION_TYPE_TRIM_MD;

	region->mirror_type = FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR;

	region->name = "trim_md";

	region->current.version = 0;

	region->prev.version = 0;

	region->current.offset = offset;

	region->current.blocks = blocks_region(l2p_blocks * sizeof(uint64_t));

	region->entry_size = 1;

	region->num_entries = region->current.blocks;

	set_region_bdev_nvc(region, dev);

	offset += region->current.blocks;



	/* Initialize trim metadata mirror region */

	if (offset >= layout->nvc.total_blocks) {

		goto error;

	}

	mirror = &layout->region[FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR];

	*mirror = *region;

	mirror->type = FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR;

	mirror->mirror_type = FTL_LAYOUT_REGION_TYPE_INVALID;

	mirror->name = "trim_md_mirror";

	mirror->current.offset += region->current.blocks;

	offset += mirror->current.blocks;



	/*

	 * Initialize NV Cache metadata

	 */

lib/ftl/ftl_layout.h

+5 −0
Original line number Diff line number Diff line
@@ -57,6 +57,11 @@ enum ftl_layout_region_type { 
	FTL_LAYOUT_REGION_TYPE_P2L_CKPT_COMP_NEXT,

	FTL_LAYOUT_REGION_TYPE_P2L_CKPT_MAX = FTL_LAYOUT_REGION_TYPE_P2L_CKPT_COMP_NEXT,



	/* Information about trimmed space in FTL */

	FTL_LAYOUT_REGION_TYPE_TRIM_MD,

	/* Mirrored information about trim */

	FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR,



	FTL_LAYOUT_REGION_TYPE_MAX,

};

lib/ftl/mngt/ftl_mngt_md.c

+1 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ is_buffer_needed(enum ftl_layout_region_type type) 
#ifndef SPDK_FTL_L2P_FLAT

	case FTL_LAYOUT_REGION_TYPE_L2P:

#endif

	case FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR:

		return false;



	default:

lib/ftl/utils/ftl_md.c

+2 −0
Original line number Diff line number Diff line
@@ -1126,6 +1126,7 @@ ftl_md_create_region_flags(struct spdk_ftl_dev *dev, int region_type) 
		}

		break;

	case FTL_LAYOUT_REGION_TYPE_VALID_MAP:

	case FTL_LAYOUT_REGION_TYPE_TRIM_MD:

		if (!ftl_fast_startup(dev) && !ftl_fast_recovery(dev)) {

			flags |= FTL_MD_CREATE_SHM_NEW;

		}
@@ -1145,6 +1146,7 @@ ftl_md_destroy_region_flags(struct spdk_ftl_dev *dev, int region_type) 
	case FTL_LAYOUT_REGION_TYPE_BAND_MD:

	case FTL_LAYOUT_REGION_TYPE_VALID_MAP:

	case FTL_LAYOUT_REGION_TYPE_NVC_MD:

	case FTL_LAYOUT_REGION_TYPE_TRIM_MD:

		if (dev->conf.fast_shutdown) {

			return FTL_MD_DESTROY_SHM_KEEP;

		}