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FTL: Add L2P restore path

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Adds initialization code for L2P done after shutdown (both clean and
dirty).

Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Change-Id: I7a938b298467c96d68f40cb14c3171d1533e1a08
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13361
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Kozlowski Mateusz 2022-05-31 13:58:00 +02:00 committed by Ben Walker
parent b5e2c59ad6
commit 55147295d7
7 changed files with 129 additions and 0 deletions
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6
lib/ftl/ftl_l2p.c
View File

@ -81,6 +81,12 @@ ftl_l2p_clear(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
FTL_L2P_OP(clear)(dev, cb, cb_ctx);
}
void
ftl_l2p_restore(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
{
FTL_L2P_OP(restore)(dev, cb, cb_ctx);
}
void
ftl_l2p_persist(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
{

101
lib/ftl/ftl_l2p_cache.c
View File

@ -625,6 +625,107 @@ ftl_l2p_cache_clear(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
ftl_md_clear(md, invalid_addr, NULL);
}
static void
l2p_shm_restore_clean(struct spdk_ftl_dev *dev)
{
struct ftl_l2p_cache *cache = (struct ftl_l2p_cache *)dev->l2p;
struct ftl_l2p_l1_map_entry *me = cache->l2_mapping;
struct ftl_l2p_page *page;
ftl_df_obj_id obj_id;
uint64_t page_no;
for (page_no = 0; page_no < cache->num_pages; ++page_no) {
obj_id = me[page_no].page_obj_id;
if (obj_id == FTL_DF_OBJ_ID_INVALID) {
continue;
}
page = ftl_mempool_claim_df(cache->l2_ctx_pool, obj_id);
assert(page);
assert(page->obj_id == ftl_mempool_get_df_obj_id(cache->l2_ctx_pool, page));
assert(page->page_no == page_no);
assert(page->state != L2P_CACHE_PAGE_INIT);
assert(page->state != L2P_CACHE_PAGE_CLEARING);
assert(cache->l2_pgs_avail > 0);
cache->l2_pgs_avail--;
page->page_buffer = (char *)ftl_md_get_buffer(cache->l1_md) + ftl_mempool_get_df_obj_index(
cache->l2_ctx_pool, page) * FTL_BLOCK_SIZE;
TAILQ_INIT(&page->ppe_list);
page->pin_ref_cnt = 0;
page->on_lru_list = 0;
memset(&page->ctx, 0, sizeof(page->ctx));
ftl_l2p_cache_lru_add_page(cache, page);
}
ftl_mempool_initialize_ext(cache->l2_ctx_pool);
}
static void
l2p_shm_restore_dirty(struct spdk_ftl_dev *dev)
{
struct ftl_l2p_cache *cache = (struct ftl_l2p_cache *)dev->l2p;
struct ftl_l2p_l1_map_entry *me = cache->l2_mapping;
struct ftl_l2p_page *page;
ftl_df_obj_id obj_id;
uint64_t page_no;
for (page_no = 0; page_no < cache->num_pages; ++page_no) {
obj_id = me[page_no].page_obj_id;
if (obj_id == FTL_DF_OBJ_ID_INVALID) {
continue;
}
page = ftl_mempool_claim_df(cache->l2_ctx_pool, obj_id);
assert(page);
assert(page->obj_id == ftl_mempool_get_df_obj_id(cache->l2_ctx_pool, page));
assert(page->page_no == page_no);
assert(page->state != L2P_CACHE_PAGE_CLEARING);
assert(cache->l2_pgs_avail > 0);
cache->l2_pgs_avail--;
if (page->state == L2P_CACHE_PAGE_INIT) {
me[page_no].page_obj_id = FTL_DF_OBJ_ID_INVALID;
cache->l2_pgs_avail++;
ftl_mempool_release_df(cache->l2_ctx_pool, obj_id);
continue;
}
page->state = L2P_CACHE_PAGE_READY;
/* Assume page is dirty after crash */
page->updates = 1;
page->page_buffer = (char *)ftl_md_get_buffer(cache->l1_md) + ftl_mempool_get_df_obj_index(
cache->l2_ctx_pool, page) * FTL_BLOCK_SIZE;
TAILQ_INIT(&page->ppe_list);
page->pin_ref_cnt = 0;
page->on_lru_list = 0;
memset(&page->ctx, 0, sizeof(page->ctx));
ftl_l2p_cache_lru_add_page(cache, page);
}
ftl_mempool_initialize_ext(cache->l2_ctx_pool);
}
void
ftl_l2p_cache_restore(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
{
if (ftl_fast_startup(dev)) {
l2p_shm_restore_clean(dev);
}
if (ftl_fast_recovery(dev)) {
l2p_shm_restore_dirty(dev);
}
cb(dev, 0, cb_ctx);
}
static void
process_persist(struct ftl_l2p_cache *cache)
{

1
lib/ftl/ftl_l2p_cache.h
View File

@ -17,6 +17,7 @@ void ftl_l2p_cache_unpin(struct spdk_ftl_dev *dev, uint64_t lba, uint64_t count)
ftl_addr ftl_l2p_cache_get(struct spdk_ftl_dev *dev, uint64_t lba);
void ftl_l2p_cache_set(struct spdk_ftl_dev *dev, uint64_t lba, ftl_addr addr);
void ftl_l2p_cache_clear(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
void ftl_l2p_cache_restore(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
void ftl_l2p_cache_persist(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
void ftl_l2p_cache_process(struct spdk_ftl_dev *dev);
bool ftl_l2p_cache_is_halted(struct spdk_ftl_dev *dev);

12
lib/ftl/ftl_l2p_flat.c
View File

@ -80,6 +80,18 @@ ftl_l2p_flat_clear(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
ftl_md_persist(md);
}
void
ftl_l2p_flat_restore(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
{
struct ftl_md *md;
md = get_l2p_md(dev);
md->cb = md_cb;
md->owner.cb_ctx = cb_ctx;
md->owner.private = cb;
ftl_md_restore(md);
}
void
ftl_l2p_flat_persist(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx)
{

1
lib/ftl/ftl_l2p_flat.h
View File

@ -14,6 +14,7 @@ ftl_addr ftl_l2p_flat_get(struct spdk_ftl_dev *dev, uint64_t lba);
void ftl_l2p_flat_set(struct spdk_ftl_dev *dev, uint64_t lba, ftl_addr addr);
void ftl_l2p_flat_unmap(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
void ftl_l2p_flat_clear(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
void ftl_l2p_flat_restore(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
void ftl_l2p_flat_persist(struct spdk_ftl_dev *dev, ftl_l2p_cb cb, void *cb_ctx);
void ftl_l2p_flat_process(struct spdk_ftl_dev *dev);
bool ftl_l2p_flat_is_halted(struct spdk_ftl_dev *dev);

6
lib/ftl/mngt/ftl_mngt_l2p.c
View File

@ -51,3 +51,9 @@ ftl_mngt_persist_l2p(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt)
{
ftl_l2p_persist(dev, l2p_cb, mngt);
}
void
ftl_mngt_restore_l2p(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt)
{
ftl_l2p_restore(dev, l2p_cb, mngt);
}

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

@ -64,6 +64,8 @@ void ftl_mngt_deinit_l2p(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt
void ftl_mngt_clear_l2p(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);
void ftl_mngt_restore_l2p(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);
void ftl_mngt_scrub_nv_cache(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);
void ftl_mngt_finalize_init_bands(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);