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bdevperf: target bdev selection

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Allow the user to select target bdev to be used by bdevperf. It's useful
when the config contains multiple bdevs, but only one is supposed to be
utilized by bdevperf directly.

Change-Id: I51aa645dcf60a4413057d86f68fe24442b280367
Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/456787
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
This commit is contained in:
Konrad Sztyber 2019-06-04 10:51:36 +02:00 committed by Darek Stojaczyk
parent 5012fcc148
commit fc3e1b6fb0
1 changed files with 20 additions and 6 deletions
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26
test/bdev/bdevperf/bdevperf.c
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@ -78,6 +78,7 @@ static bool g_zcopy = true;
static unsigned g_master_core;
static int g_time_in_sec;
static bool g_mix_specified;
static const char *g_target_bdev_name;
static struct spdk_poller *g_perf_timer = NULL;
@ -349,14 +350,24 @@ bdevperf_construct_targets(void)
struct spdk_bdev *bdev;
int rc;
bdev = spdk_bdev_first_leaf();
while (bdev != NULL) {
rc = bdevperf_construct_target(bdev);
if (rc != 0) {
if (g_target_bdev_name != NULL) {
bdev = spdk_bdev_get_by_name(g_target_bdev_name);
if (!bdev) {
fprintf(stderr, "Unable to find bdev '%s'\n", g_target_bdev_name);
return;
}
bdev = spdk_bdev_next_leaf(bdev);
bdevperf_construct_target(bdev);
} else {
bdev = spdk_bdev_first_leaf();
while (bdev != NULL) {
rc = bdevperf_construct_target(bdev);
if (rc != 0) {
return;
}
bdev = spdk_bdev_next_leaf(bdev);
}
}
}
@ -794,6 +805,7 @@ bdevperf_usage(void)
printf("\t\t(Formula: M = 2 / (n + 1), EMA[i+1] = IO/s * M + (1 - M) * EMA[i])\n");
printf("\t\t(only valid with -S)\n");
printf(" -S <period> show performance result in real time every <period> seconds\n");
printf(" -T <target> target bdev\n");
}
/*
@ -1043,6 +1055,8 @@ bdevperf_parse_arg(int ch, char *arg)
if (ch == 'w') {
g_workload_type = optarg;
} else if (ch == 'T') {
g_target_bdev_name = optarg;
} else {
tmp = spdk_strtoll(optarg, 10);
if (tmp < 0) {
@ -1102,7 +1116,7 @@ main(int argc, char **argv)
g_time_in_sec = 0;
g_mix_specified = false;
if ((rc = spdk_app_parse_args(argc, argv, &opts, "q:o:t:w:M:P:S:", NULL,
if ((rc = spdk_app_parse_args(argc, argv, &opts, "q:o:t:w:M:P:S:T:", NULL,
bdevperf_parse_arg, bdevperf_usage)) !=
SPDK_APP_PARSE_ARGS_SUCCESS) {
return rc;