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ftl: metadata for unmap support

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Setup trim metadata layout.

Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Change-Id: I9395119cb8d5f7a5de4fde7b3f9506eb06452d7b
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13377
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Artur Paszkiewicz 2022-05-31 11:25:31 +02:00 committed by Jim Harris
parent ea80f87e0e
commit 78c3cbf4c9
4 changed files with 41 additions and 1 deletions
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34
lib/ftl/ftl_layout.c
View File

@ -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
*/

5
lib/ftl/ftl_layout.h
View File

@ -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,
};

1
lib/ftl/mngt/ftl_mngt_md.c
View File

@ -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:

2
lib/ftl/utils/ftl_md.c
View File

@ -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;
}