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FTL: Initialize nv_cache metadata on startup

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Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Change-Id: Ie1a60ec8d1e05b1e4dec85a7187cffad24496460
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13320
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:
Kozlowski Mateusz 2022-06-13 10:59:05 +02:00 committed by Tomasz Zawadzki
parent ece0e0eee7
commit 506315a651
5 changed files with 57 additions and 0 deletions
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38
lib/ftl/ftl_nv_cache.c
View File

@ -325,6 +325,44 @@ chunk_free_p2l_map(struct ftl_nv_cache_chunk *chunk)
ftl_chunk_free_md_entry(chunk);
}
int
ftl_nv_cache_save_state(struct ftl_nv_cache *nv_cache)
{
struct spdk_ftl_dev *dev = SPDK_CONTAINEROF(nv_cache, struct spdk_ftl_dev, nv_cache);
struct ftl_nv_cache_chunk *chunk;
int status = 0;
uint64_t i;
assert(nv_cache->chunk_open_count == 0);
chunk = nv_cache->chunks;
if (!chunk) {
FTL_ERRLOG(dev, "Cannot save NV cache state, no NV cache metadata\n");
return -ENOMEM;
}
for (i = 0; i < nv_cache->chunk_count; i++, chunk++) {
nvc_validate_md(nv_cache, chunk->md);
if (chunk->md->blocks_written == nv_cache->chunk_blocks) {
/* Full chunk */
} else if (0 == chunk->md->blocks_written) {
/* Empty chunk */
} else {
assert(0);
status = -EINVAL;
break;
}
}
if (status) {
FTL_ERRLOG(dev, "Cannot save NV cache state, inconsistent NV cache"
"metadata\n");
}
return status;
}
static int
chunk_alloc_p2l_map(struct ftl_nv_cache_chunk *chunk)
{

2
lib/ftl/ftl_nv_cache.h
View File

@ -137,6 +137,8 @@ int ftl_nv_cache_read(struct ftl_io *io, ftl_addr addr, uint32_t num_blocks,
bool ftl_nv_cache_full(struct ftl_nv_cache *nv_cache);
void ftl_nv_cache_process(struct spdk_ftl_dev *dev);
int ftl_nv_cache_save_state(struct ftl_nv_cache *nv_cache);
void ftl_nv_cache_halt(struct ftl_nv_cache *nv_cache);
int ftl_nv_cache_chunks_busy(struct ftl_nv_cache *nv_cache);

11
lib/ftl/mngt/ftl_mngt_md.c
View File

@ -120,6 +120,17 @@ persist(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt,
ftl_md_persist(md);
}
void
ftl_mngt_persist_nv_cache_metadata(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt)
{
if (ftl_nv_cache_save_state(&dev->nv_cache)) {
ftl_mngt_fail_step(mngt);
return;
}
persist(dev, mngt, FTL_LAYOUT_REGION_TYPE_NVC_MD);
}
static uint32_t
get_sb_crc(struct ftl_superblock *sb)
{

4
lib/ftl/mngt/ftl_mngt_startup.c
View File

@ -108,6 +108,10 @@ static const struct ftl_mngt_process_desc desc_first_start = {
.name = "Scrub NV cache",
.action = ftl_mngt_scrub_nv_cache,
},
{
.name = "Save initial chunk info metadata",
.action = ftl_mngt_persist_nv_cache_metadata,
},
{
.name = "Set FTL dirty state",
.action = ftl_mngt_set_dirty,

2
lib/ftl/mngt/ftl_mngt_steps.h
View File

@ -68,4 +68,6 @@ void ftl_mngt_init_default_sb(struct spdk_ftl_dev *dev, struct ftl_mngt_process
void ftl_mngt_set_dirty(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);
void ftl_mngt_persist_nv_cache_metadata(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);
#endif /* FTL_MNGT_STEPS_H */