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lib/nvmf: Add current qpair count to poll group statistic

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In struct spdk_nvmf_poll_group_stat, there are statistics of cumulative IO and
admin queue pair counts. But current qpair counts are not reflected. Use
this patch to add current admin and io qpair counts for a poll group.

Signed-off-by: Rui Chang <rui.chang@arm.com>
Change-Id: I7d40aed8b3fb09f9d34e5b5232380d162b97882b
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7969
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
Reviewed-by: Eugene Kochetov <evgeniik@nvidia.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: GangCao <gang.cao@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
This commit is contained in:
Rui Chang 2021-05-20 09:44:00 +08:00 committed by Tomasz Zawadzki
parent 75a507736b
commit 080118cd83
4 changed files with 23 additions and 0 deletions
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3
doc/jsonrpc.md
View File

@ -6770,6 +6770,7 @@ tgt_name | Optional | string | Parent NVMe-oF target nam
### Response
The response is an object containing NVMf subsystem statistics.
In the response, `admin_qpairs` and `io_qpairs` are reflecting cumulative queue pair counts while `current_admin_qpairs` and `current_io_qpairs` are showing the current number.
### Example
@ -6794,6 +6795,8 @@ Example response:
"name": "app_thread",
"admin_qpairs": 1,
"io_qpairs": 4,
"current_admin_qpairs": 1,
"current_io_qpairs": 2,
"pending_bdev_io": 1721,
"transports": [
{

6
include/spdk/nvmf.h
View File

@ -120,8 +120,14 @@ struct spdk_nvmf_listen_opts {
void spdk_nvmf_listen_opts_init(struct spdk_nvmf_listen_opts *opts, size_t opts_size);
struct spdk_nvmf_poll_group_stat {
/* cumulative admin qpair count */
uint32_t admin_qpairs;
/* cumulative io qpair count */
uint32_t io_qpairs;
/* current admin qpair count */
uint32_t current_admin_qpairs;
/* current io qpair count */
uint32_t current_io_qpairs;
uint64_t pending_bdev_io;
};

2
lib/nvmf/ctrlr.c
View File

@ -711,8 +711,10 @@ _nvmf_ctrlr_connect(struct spdk_nvmf_request *req)
if (0 == qpair->qid) {
qpair->group->stat.admin_qpairs++;
qpair->group->stat.current_admin_qpairs++;
} else {
qpair->group->stat.io_qpairs++;
qpair->group->stat.current_io_qpairs++;
}
if (cmd->qid == 0) {

12
lib/nvmf/nvmf.c
View File

@ -999,6 +999,16 @@ _nvmf_qpair_destroy(void *ctx, int status)
assert(qpair->state == SPDK_NVMF_QPAIR_DEACTIVATING);
qpair_ctx->qid = qpair->qid;
if (ctrlr) {
if (0 == qpair->qid) {
assert(qpair->group->stat.current_admin_qpairs > 0);
qpair->group->stat.current_admin_qpairs--;
} else {
assert(qpair->group->stat.current_io_qpairs > 0);
qpair->group->stat.current_io_qpairs--;
}
}
if (!ctrlr || !ctrlr->thread) {
spdk_nvmf_poll_group_remove(qpair);
nvmf_transport_qpair_fini(qpair, _nvmf_transport_qpair_fini_complete, qpair_ctx);
@ -1607,6 +1617,8 @@ spdk_nvmf_poll_group_dump_stat(struct spdk_nvmf_poll_group *group, struct spdk_j
spdk_json_write_named_string(w, "name", spdk_thread_get_name(spdk_get_thread()));
spdk_json_write_named_uint32(w, "admin_qpairs", group->stat.admin_qpairs);
spdk_json_write_named_uint32(w, "io_qpairs", group->stat.io_qpairs);
spdk_json_write_named_uint32(w, "current_admin_qpairs", group->stat.current_admin_qpairs);
spdk_json_write_named_uint32(w, "current_io_qpairs", group->stat.current_io_qpairs);
spdk_json_write_named_uint64(w, "pending_bdev_io", group->stat.pending_bdev_io);
spdk_json_write_named_array_begin(w, "transports");