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bdev/nvme: Merge bdev_nvme_remove_trid() into bdev_nvme_delete()

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This will make us easier to maintain the operation to delete
nvme_bdev_ctrlr and its trids. The added unit test cases guard us
from degradation.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I400d4092020e89bacaebc7be045a456b8760ed8d
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6688
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Shuhei Matsumoto 2021-03-04 01:32:54 +09:00 committed by Tomasz Zawadzki
parent 3eb0b6b167
commit 83f27434d3
4 changed files with 47 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
module/bdev/nvme/bdev_nvme.c
View File

@ -2122,7 +2122,7 @@ bdev_nvme_create(struct spdk_nvme_transport_id *trid,
}
int
bdev_nvme_remove_trid(const char *name, struct spdk_nvme_transport_id *trid)
bdev_nvme_delete(const char *name, const struct spdk_nvme_transport_id *trid)
{
struct nvme_bdev_ctrlr *nvme_bdev_ctrlr;
struct nvme_bdev_ctrlr_trid *ctrlr_trid, *tmp_trid;
@ -2137,19 +2137,24 @@ bdev_nvme_remove_trid(const char *name, struct spdk_nvme_transport_id *trid)
return -ENODEV;
}
/* case 1: we are currently using the path to be removed. */
/* case 1: remove the controller itself. */
if (trid == NULL) {
return _bdev_nvme_delete(nvme_bdev_ctrlr, false);
}
/* case 2: we are currently using the path to be removed. */
if (!spdk_nvme_transport_id_compare(trid, nvme_bdev_ctrlr->connected_trid)) {
ctrlr_trid = TAILQ_FIRST(&nvme_bdev_ctrlr->trids);
assert(nvme_bdev_ctrlr->connected_trid == &ctrlr_trid->trid);
/* case 1A: the current path is the only path. */
/* case 2A: the current path is the only path. */
if (!TAILQ_NEXT(ctrlr_trid, link)) {
return bdev_nvme_delete(name);
return _bdev_nvme_delete(nvme_bdev_ctrlr, false);
}
/* case 1B: there is an alternative path. */
return bdev_nvme_failover(nvme_bdev_ctrlr, true);
}
/* case 2: We are not using the specified path. */
/* case 3: We are not using the specified path. */
TAILQ_FOREACH_SAFE(ctrlr_trid, &nvme_bdev_ctrlr->trids, link, tmp_trid) {
if (!spdk_nvme_transport_id_compare(&ctrlr_trid->trid, trid)) {
TAILQ_REMOVE(&nvme_bdev_ctrlr->trids, ctrlr_trid, link);
@ -2158,33 +2163,10 @@ bdev_nvme_remove_trid(const char *name, struct spdk_nvme_transport_id *trid)
}
}
/* case 2A: The address isn't even in the registered list. */
/* case 3A: The address isn't even in the registered list. */
return -ENXIO;
}
int
bdev_nvme_delete(const char *name)
{
struct nvme_bdev_ctrlr *nvme_bdev_ctrlr;
if (name == NULL) {
return -EINVAL;
}
pthread_mutex_lock(&g_bdev_nvme_mutex);
nvme_bdev_ctrlr = nvme_bdev_ctrlr_get_by_name(name);
if (nvme_bdev_ctrlr == NULL) {
pthread_mutex_unlock(&g_bdev_nvme_mutex);
SPDK_ERRLOG("Failed to find NVMe controller\n");
return -ENODEV;
}
pthread_mutex_unlock(&g_bdev_nvme_mutex);
return _bdev_nvme_delete(nvme_bdev_ctrlr, false);
}
static int
bdev_nvme_library_init(void)
{

7
module/bdev/nvme/bdev_nvme.h
View File

@ -82,12 +82,13 @@ int bdev_nvme_create(struct spdk_nvme_transport_id *trid,
struct spdk_nvme_ctrlr *bdev_nvme_get_ctrlr(struct spdk_bdev *bdev);
/**
* Delete NVMe controller with all bdevs on top of it.
* Requires to pass name of NVMe controller.
* Delete NVMe controller with all bdevs on top of it, or delete the specified path
* if there is any alternative path. Requires to pass name of NVMe controller.
*
* \param name NVMe controller name
* \param trid The specified transport ID to remove (optional)
* \return zero on success, -EINVAL on wrong parameters or -ENODEV if controller is not found
*/
int bdev_nvme_delete(const char *name);
int bdev_nvme_delete(const char *name, const struct spdk_nvme_transport_id *trid);
#endif /* SPDK_BDEV_NVME_H */

4
module/bdev/nvme/bdev_nvme_rpc.c
View File

@ -589,9 +589,9 @@ rpc_bdev_nvme_detach_controller(struct spdk_jsonrpc_request *request,
goto cleanup;
}
memcpy(trid.subnqn, req.subnqn, len + 1);
rc = bdev_nvme_remove_trid(req.name, &trid);
rc = bdev_nvme_delete(req.name, &trid);
} else {
rc = bdev_nvme_delete(req.name);
rc = bdev_nvme_delete(req.name, NULL);
}
if (rc != 0) {

45
test/unit/lib/bdev/nvme/bdev_nvme.c/bdev_nvme_ut.c
View File

@ -834,7 +834,7 @@ test_create_ctrlr(void)
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") != NULL);
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") != NULL);
@ -942,7 +942,7 @@ test_reset_ctrlr(void)
poll_threads();
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -986,7 +986,7 @@ test_race_between_reset_and_destruct_ctrlr(void)
/* Try destructing ctrlr while ctrlr is being reset, but it will be deferred. */
set_thread(0);
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") == nvme_bdev_ctrlr);
CU_ASSERT(nvme_bdev_ctrlr->destruct == true);
@ -1148,7 +1148,7 @@ test_failover_ctrlr(void)
poll_threads();
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1230,7 +1230,7 @@ test_pending_reset(void)
set_thread(0);
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1299,7 +1299,7 @@ test_attach_ctrlr(void)
CU_ASSERT(nvme_bdev_ctrlr->ctrlr == ctrlr);
CU_ASSERT(nvme_bdev_ctrlr->num_ns == 0);
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1331,7 +1331,7 @@ test_attach_ctrlr(void)
CU_ASSERT(attached_names[0] != NULL && strcmp(attached_names[0], "nvme0n1") == 0);
attached_names[0] = NULL;
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1364,7 +1364,7 @@ test_attach_ctrlr(void)
CU_ASSERT(attached_names[0] == NULL);
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1423,7 +1423,7 @@ test_reconnect_qpair(void)
poll_threads();
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1502,7 +1502,7 @@ test_aer_cb(void)
CU_ASSERT(nvme_bdev_ctrlr->namespaces[3]->populated == true);
CU_ASSERT(bdev->disk.blockcnt == 2048);
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1644,7 +1644,7 @@ test_submit_nvme_cmd(void)
poll_threads();
rc = bdev_nvme_delete("nvme0");
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
poll_threads();
@ -1677,11 +1677,11 @@ test_remove_trid(void)
CU_ASSERT(rc == 0);
/* trid3 is not in the registered list. */
rc = bdev_nvme_remove_trid("nvme0", &trid3);
rc = bdev_nvme_delete("nvme0", &trid3);
CU_ASSERT(rc == -ENXIO);
/* trid2 is not used, and simply removed. */
rc = bdev_nvme_remove_trid("nvme0", &trid2);
rc = bdev_nvme_delete("nvme0", &trid2);
CU_ASSERT(rc == 0);
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") == nvme_bdev_ctrlr);
TAILQ_FOREACH(ctrid, &nvme_bdev_ctrlr->trids, link) {
@ -1694,7 +1694,7 @@ test_remove_trid(void)
/* trid1 is currently used and trid3 is an alternative path.
* If we remove trid1, path is changed to trid3.
*/
rc = bdev_nvme_remove_trid("nvme0", &trid1);
rc = bdev_nvme_delete("nvme0", &trid1);
CU_ASSERT(rc == 0);
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") == nvme_bdev_ctrlr);
CU_ASSERT(nvme_bdev_ctrlr->resetting == true);
@ -1710,7 +1710,22 @@ test_remove_trid(void)
/* trid3 is the current and only path. If we remove trid3, the corresponding
* nvme_bdev_ctrlr is removed.
*/
rc = bdev_nvme_remove_trid("nvme0", &trid3);
rc = bdev_nvme_delete("nvme0", &trid3);
CU_ASSERT(rc == 0);
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") == nvme_bdev_ctrlr);
poll_threads();
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") == NULL);
rc = nvme_bdev_ctrlr_create(&ctrlr, "nvme0", &trid1, 0, &nvme_bdev_ctrlr);
CU_ASSERT(rc == 0);
rc = bdev_nvme_add_trid(nvme_bdev_ctrlr, &ctrlr, &trid2);
CU_ASSERT(rc == 0);
/* If trid is not specified, nvme_bdev_ctrlr itself is removed. */
rc = bdev_nvme_delete("nvme0", NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(nvme_bdev_ctrlr_get_by_name("nvme0") == nvme_bdev_ctrlr);