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FTL: Add first startup basic initialization flow

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Scrubbing nv cache region and finalizing initialization

Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com>
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Change-Id: I654b9a92004042c773c3672a5f27b0f66200469d
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13295
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Kozlowski Mateusz 2022-06-20 11:50:06 +02:00 committed by Konrad Sztyber
parent b872e29fef
commit 5022d8f372
4 changed files with 90 additions and 0 deletions
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42
lib/ftl/mngt/ftl_mngt_misc.c
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@ -18,3 +18,45 @@ ftl_mngt_check_conf(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt)
ftl_mngt_fail_step(mngt);
}
}
static void
user_clear_cb(struct spdk_ftl_dev *dev, struct ftl_md *md, int status)
{
struct ftl_mngt_process *mngt = md->owner.cb_ctx;
if (status) {
FTL_ERRLOG(ftl_mngt_get_dev(mngt), "FTL NV Cache: ERROR of clearing user cache data\n");
ftl_mngt_fail_step(mngt);
} else {
ftl_mngt_next_step(mngt);
}
}
void
ftl_mngt_scrub_nv_cache(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt)
{
struct ftl_layout_region *region = &dev->layout.region[FTL_LAYOUT_REGION_TYPE_DATA_NVC];
struct ftl_md *md = dev->layout.md[FTL_LAYOUT_REGION_TYPE_DATA_NVC];
union ftl_md_vss vss;
FTL_NOTICELOG(dev, "First startup needs to scrub nv cache data region, this may take some time.\n");
FTL_NOTICELOG(dev, "Scrubbing %lluGiB\n", region->current.blocks * FTL_BLOCK_SIZE / GiB);
/* Need to scrub user data, so in case of dirty shutdown the recovery won't
* pull in data during open chunks recovery from any previous instance
*/
md->cb = user_clear_cb;
md->owner.cb_ctx = mngt;
vss.version.md_version = region->current.version;
vss.nv_cache.lba = FTL_ADDR_INVALID;
ftl_md_clear(md, 0, &vss);
}
void
ftl_mngt_finalize_startup(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt)
{
dev->initialized = 1;
ftl_mngt_next_step(mngt);
}

4
lib/ftl/mngt/ftl_mngt_shutdown.c
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@ -7,6 +7,10 @@
#include "ftl_mngt.h"
#include "ftl_mngt_steps.h"
/*
* Steps executed during clean shutdown - includes persisting metadata and rolling
* back any setup steps executed during startup (closing bdevs, io channels, etc)
*/
static const struct ftl_mngt_process_desc desc_shutdown = {
.name = "FTL shutdown",
.error_handler = ftl_mngt_rollback_device,

40
lib/ftl/mngt/ftl_mngt_startup.c
View File

@ -8,7 +8,23 @@
#include "ftl_mngt_steps.h"
static const struct ftl_mngt_process_desc desc_startup;
static const struct ftl_mngt_process_desc desc_first_start;
static void
ftl_mngt_select_startup_mode(struct spdk_ftl_dev *dev,
struct ftl_mngt_process *mngt)
{
if (dev->conf.mode & SPDK_FTL_MODE_CREATE) {
ftl_mngt_call_process(mngt, &desc_first_start);
} else {
ftl_mngt_fail_step(mngt);
}
}
/*
* Common startup steps required by FTL in all cases (creation, load, dirty shutdown recovery).
* Includes actions like opening the devices, calculating the expected size and version of metadata, etc.
*/
static const struct ftl_mngt_process_desc desc_startup = {
.name = "FTL startup",
.steps = {
@ -35,6 +51,30 @@ static const struct ftl_mngt_process_desc desc_startup = {
.action = ftl_mngt_init_md,
.cleanup = ftl_mngt_deinit_md
},
{
.name = "Select startup mode",
.action = ftl_mngt_select_startup_mode
},
{}
}
};
/*
* Steps executed when creating FTL for the first time - most important being scrubbing
* old data/metadata (so it's not leaked during dirty shutdown recovery) and laying out
* regions for the new metadata (initializing band states, etc).
*/
static const struct ftl_mngt_process_desc desc_first_start = {
.name = "FTL first start",
.steps = {
{
.name = "Scrub NV cache",
.action = ftl_mngt_scrub_nv_cache,
},
{
.name = "Finalize initialization",
.action = ftl_mngt_finalize_startup,
},
{}
}
};

4
lib/ftl/mngt/ftl_mngt_steps.h
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@ -18,6 +18,10 @@ void ftl_mngt_open_cache_bdev(struct spdk_ftl_dev *dev, struct ftl_mngt_process
void ftl_mngt_close_cache_bdev(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_startup(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);
void ftl_mngt_init_layout(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);
void ftl_mngt_init_md(struct spdk_ftl_dev *dev, struct ftl_mngt_process *mngt);