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ftl: Add explicit values to the ftl_layout_region_type

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This should prevent accidental reordering/removal of regions from
causing problems after loading against such changed metadata.

Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Change-Id: I75c62810157db4bb0de4dfc84f5656fd187befde
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13614
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Kozlowski Mateusz 2022-07-09 01:14:11 +02:00 committed by Jim Harris
parent 7f5a982f3c
commit 4759b0b6a6
3 changed files with 28 additions and 29 deletions
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49
lib/ftl/ftl_layout.h
View File

@ -15,54 +15,53 @@ struct ftl_md;
(FTL_LAYOUT_REGION_TYPE_P2L_CKPT_MAX - FTL_LAYOUT_REGION_TYPE_P2L_CKPT_MIN + 1)
enum ftl_layout_region_type {
#ifdef SPDK_FTL_VSS_EMU
/** VSS region for NV cache VSS emulation */
FTL_LAYOUT_REGION_TYPE_VSS,
#endif
/* Superblock describing the basic FTL information */
FTL_LAYOUT_REGION_TYPE_SB,
FTL_LAYOUT_REGION_TYPE_SB = 0,
/* Mirrored instance of the superblock on the base device */
FTL_LAYOUT_REGION_TYPE_SB_BASE,
FTL_LAYOUT_REGION_TYPE_SB_BASE = 1,
/* If using cached L2P, this region stores the serialized instance of it */
FTL_LAYOUT_REGION_TYPE_L2P,
FTL_LAYOUT_REGION_TYPE_L2P = 2,
/* State of bands */
FTL_LAYOUT_REGION_TYPE_BAND_MD,
FTL_LAYOUT_REGION_TYPE_BAND_MD = 3,
/* Mirrored instance of bands state */
FTL_LAYOUT_REGION_TYPE_BAND_MD_MIRROR,
FTL_LAYOUT_REGION_TYPE_BAND_MD_MIRROR = 4,
/* Map of valid physical addresses, used for more efficient garbage collection */
FTL_LAYOUT_REGION_TYPE_VALID_MAP,
FTL_LAYOUT_REGION_TYPE_VALID_MAP = 5,
/* State of chunks */
FTL_LAYOUT_REGION_TYPE_NVC_MD,
FTL_LAYOUT_REGION_TYPE_NVC_MD = 6,
/* Mirrored instance of the state of chunks */
FTL_LAYOUT_REGION_TYPE_NVC_MD_MIRROR,
FTL_LAYOUT_REGION_TYPE_NVC_MD_MIRROR = 7,
/* User data region on the nv cache device */
FTL_LAYOUT_REGION_TYPE_DATA_NVC,
FTL_LAYOUT_REGION_TYPE_DATA_NVC = 8,
/* User data region on the base device */
FTL_LAYOUT_REGION_TYPE_DATA_BASE,
FTL_LAYOUT_REGION_TYPE_DATA_BASE = 9,
/* P2L checkpointing allows for emulation of VSS on base device.
* 4 entries are needed - 2 for each writer
* Although the naming may suggest a particular region is assigned to its corresponding writer, it's not
* the case - they can be used interchangeably
*/
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_GC,
* 4 entries are needed - 2 for each writer */
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_GC = 10,
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_MIN = FTL_LAYOUT_REGION_TYPE_P2L_CKPT_GC,
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_GC_NEXT,
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_COMP,
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_COMP_NEXT,
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_GC_NEXT = 11,
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_COMP = 12,
FTL_LAYOUT_REGION_TYPE_P2L_CKPT_COMP_NEXT = 13,
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,
FTL_LAYOUT_REGION_TYPE_TRIM_MD = 14,
/* Mirrored information about trim */
FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR,
FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR = 15,
FTL_LAYOUT_REGION_TYPE_MAX,
#ifndef SPDK_FTL_VSS_EMU
FTL_LAYOUT_REGION_TYPE_MAX = 16
#else
/* VSS region for NV cache VSS emulation */
FTL_LAYOUT_REGION_TYPE_VSS = 16,
FTL_LAYOUT_REGION_TYPE_MAX = 17,
#endif
};
/* last nvc/base region in terms of lba address space */

2
lib/ftl/mngt/ftl_mngt_md.c
View File

@ -534,7 +534,7 @@ ftl_mngt_md_init_vss_emu(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt
/* Allocate md buf */
layout->md[FTL_LAYOUT_REGION_TYPE_VSS] = ftl_md_create(dev, region->current.blocks,
region->vss_blksz, NULL, 0, region);
region->vss_blksz, NULL, FTL_MD_CREATE_HEAP, region);
if (NULL == layout->md[FTL_LAYOUT_REGION_TYPE_VSS]) {
ftl_mngt_fail_step(mngt);
return;

6
lib/ftl/upgrade/ftl_layout_upgrade.c
View File

@ -33,9 +33,6 @@ extern struct ftl_region_upgrade_desc nvc_upgrade_desc[];
extern struct ftl_region_upgrade_desc band_upgrade_desc[];
static struct ftl_layout_upgrade_desc_list layout_upgrade_desc[] = {
#ifdef SPDK_FTL_VSS_EMU
[FTL_LAYOUT_REGION_TYPE_VSS] = {},
#endif
[FTL_LAYOUT_REGION_TYPE_SB] = {
.count = FTL_SB_VERSION_CURRENT,
.desc = sb_upgrade_desc,
@ -82,6 +79,9 @@ static struct ftl_layout_upgrade_desc_list layout_upgrade_desc[] = {
},
[FTL_LAYOUT_REGION_TYPE_TRIM_MD] = {},
[FTL_LAYOUT_REGION_TYPE_TRIM_MD_MIRROR] = {},
#ifdef SPDK_FTL_VSS_EMU
[FTL_LAYOUT_REGION_TYPE_VSS] = {},
#endif
};
SPDK_STATIC_ASSERT(sizeof(layout_upgrade_desc) / sizeof(*layout_upgrade_desc) ==