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bdev: add bdev_auto_examine in bdev_set_options

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The bdev_auto_examine flage will impact how bdev layer examine a
disk. If bdev_auto_examine is true, the bdev layer will examine all
bdevs as usual. If bdev_auto_examine is false, the bdev layer will
only examine a bdev if it is in a whitelist.

Signed-off-by: Peng Yu <yupeng0921@gmail.com>
Change-Id: If5b26283905f97f8a95ae9065226fa3dae6c27a9
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/2114
Community-CI: Mellanox Build Bot
Community-CI: Broadcom CI
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
yupeng 2020-04-30 06:00:42 +00:00 committed by Tomasz Zawadzki
parent f2ede6b486
commit f233c376b1
3 changed files with 30 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/spdk/bdev.h
View File

@ -185,6 +185,7 @@ struct spdk_bdev_io_stat {
struct spdk_bdev_opts {
uint32_t bdev_io_pool_size;
uint32_t bdev_io_cache_size;
bool bdev_auto_examine;
};
void spdk_bdev_get_opts(struct spdk_bdev_opts *opts);

28
lib/bdev/bdev.c
View File

@ -62,6 +62,7 @@ int __itt_init_ittlib(const char *, __itt_group_id);
#define SPDK_BDEV_IO_POOL_SIZE (64 * 1024 - 1)
#define SPDK_BDEV_IO_CACHE_SIZE 256
#define SPDK_BDEV_AUTO_EXAMINE true
#define BUF_SMALL_POOL_SIZE 8191
#define BUF_LARGE_POOL_SIZE 1023
#define NOMEM_THRESHOLD_COUNT 8
@ -137,6 +138,7 @@ struct lba_range {
static struct spdk_bdev_opts g_bdev_opts = {
.bdev_io_pool_size = SPDK_BDEV_IO_POOL_SIZE,
.bdev_io_cache_size = SPDK_BDEV_IO_CACHE_SIZE,
.bdev_auto_examine = SPDK_BDEV_AUTO_EXAMINE,
};
static spdk_bdev_init_cb g_init_cb_fn = NULL;
@ -398,6 +400,25 @@ spdk_bdev_set_opts(struct spdk_bdev_opts *opts)
return 0;
}
/*
* Will implement the whitelist in the furture
*/
static inline bool
bdev_in_examine_whitelist(struct spdk_bdev *bdev)
{
return false;
}
static inline bool
bdev_ok_to_examine(struct spdk_bdev *bdev)
{
if (g_bdev_opts.bdev_auto_examine) {
return true;
} else {
return bdev_in_examine_whitelist(bdev);
}
}
struct spdk_bdev *
spdk_bdev_first(void)
{
@ -894,6 +915,7 @@ spdk_bdev_subsystem_config_json(struct spdk_json_write_ctx *w)
spdk_json_write_named_object_begin(w, "params");
spdk_json_write_named_uint32(w, "bdev_io_pool_size", g_bdev_opts.bdev_io_pool_size);
spdk_json_write_named_uint32(w, "bdev_io_cache_size", g_bdev_opts.bdev_io_cache_size);
spdk_json_write_named_bool(w, "bdev_auto_examine", g_bdev_opts.bdev_auto_examine);
spdk_json_write_object_end(w);
spdk_json_write_object_end(w);
@ -5015,7 +5037,7 @@ bdev_start(struct spdk_bdev *bdev)
/* Examine configuration before initializing I/O */
TAILQ_FOREACH(module, &g_bdev_mgr.bdev_modules, internal.tailq) {
if (module->examine_config) {
if (module->examine_config && bdev_ok_to_examine(bdev)) {
action = module->internal.action_in_progress;
module->internal.action_in_progress++;
module->examine_config(bdev);
@ -5026,7 +5048,7 @@ bdev_start(struct spdk_bdev *bdev)
}
}
if (bdev->internal.claim_module) {
if (bdev->internal.claim_module && bdev_ok_to_examine(bdev)) {
if (bdev->internal.claim_module->examine_disk) {
bdev->internal.claim_module->internal.action_in_progress++;
bdev->internal.claim_module->examine_disk(bdev);
@ -5035,7 +5057,7 @@ bdev_start(struct spdk_bdev *bdev)
}
TAILQ_FOREACH(module, &g_bdev_mgr.bdev_modules, internal.tailq) {
if (module->examine_disk) {
if (module->examine_disk && bdev_ok_to_examine(bdev)) {
module->internal.action_in_progress++;
module->examine_disk(bdev);
}

4
lib/bdev/bdev_rpc.c
View File

@ -42,11 +42,13 @@
struct spdk_rpc_set_bdev_opts {
uint32_t bdev_io_pool_size;
uint32_t bdev_io_cache_size;
bool bdev_auto_examine;
};
static const struct spdk_json_object_decoder rpc_set_bdev_opts_decoders[] = {
{"bdev_io_pool_size", offsetof(struct spdk_rpc_set_bdev_opts, bdev_io_pool_size), spdk_json_decode_uint32, true},
{"bdev_io_cache_size", offsetof(struct spdk_rpc_set_bdev_opts, bdev_io_cache_size), spdk_json_decode_uint32, true},
{"bdev_auto_examine", offsetof(struct spdk_rpc_set_bdev_opts, bdev_auto_examine), spdk_json_decode_bool, true},
};
static void
@ -59,6 +61,7 @@ spdk_rpc_bdev_set_options(struct spdk_jsonrpc_request *request, const struct spd
rpc_opts.bdev_io_pool_size = UINT32_MAX;
rpc_opts.bdev_io_cache_size = UINT32_MAX;
rpc_opts.bdev_auto_examine = true;
if (params != NULL) {
if (spdk_json_decode_object(params, rpc_set_bdev_opts_decoders,
@ -77,6 +80,7 @@ spdk_rpc_bdev_set_options(struct spdk_jsonrpc_request *request, const struct spd
if (rpc_opts.bdev_io_cache_size != UINT32_MAX) {
bdev_opts.bdev_io_cache_size = rpc_opts.bdev_io_cache_size;
}
bdev_opts.bdev_auto_examine = rpc_opts.bdev_auto_examine;
rc = spdk_bdev_set_opts(&bdev_opts);
if (rc != 0) {