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fio_plugin: add support for mocking SGL entries

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FIO is going to always present a contiguous buffer to us. But we can
fake out the nvme driver with a couple of global variables.

Change-Id: I038e70582043e1d7c1800ed065fe126aa091c290
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/439608
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Seth Howell 2019-01-08 14:56:39 -07:00 committed by Jim Harris
parent 62700dac2e
commit 47fca7c7e8
3 changed files with 41 additions and 2 deletions
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23
examples/nvme/fio_plugin/fio_plugin.c
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@ -49,6 +49,7 @@
static bool g_spdk_env_initialized;
static int g_spdk_enable_sgl = 0;
static uint32_t g_spdk_sge_size = 4096;
static uint32_t g_spdk_pract_flag;
static uint32_t g_spdk_prchk_flags;
static uint32_t g_spdk_md_per_io_size = 4096;
@ -60,6 +61,7 @@ struct spdk_fio_options {
int mem_size;
int shm_id;
int enable_sgl;
int sge_size;
char *hostnqn;
int pi_act;
char *pi_chk;
@ -407,6 +409,7 @@ static int spdk_fio_setup(struct thread_data *td)
opts.mem_size = fio_options->mem_size;
opts.shm_id = fio_options->shm_id;
g_spdk_enable_sgl = fio_options->enable_sgl;
g_spdk_sge_size = fio_options->sge_size;
parse_pract_flag(fio_options->pi_act);
g_spdk_md_per_io_size = spdk_max(fio_options->md_per_io_size, 4096);
g_spdk_apptag = (uint16_t)fio_options->apptag;
@ -708,16 +711,22 @@ spdk_nvme_io_next_sge(void *ref, void **address, uint32_t *length)
{
struct spdk_fio_request *fio_req = (struct spdk_fio_request *)ref;
struct io_u *io_u = fio_req->io;
uint32_t iov_len;
*address = io_u->buf;
*length = io_u->xfer_buflen;
if (fio_req->iov_offset) {
assert(fio_req->iov_offset <= io_u->xfer_buflen);
*address += fio_req->iov_offset;
*length -= fio_req->iov_offset;
}
iov_len = io_u->xfer_buflen - fio_req->iov_offset;
if (iov_len > g_spdk_sge_size) {
iov_len = g_spdk_sge_size;
}
fio_req->iov_offset += iov_len;
*length = iov_len;
return 0;
}
@ -956,6 +965,16 @@ static struct fio_option options[] = {
.category = FIO_OPT_C_ENGINE,
.group = FIO_OPT_G_INVALID,
},
{
.name = "sge_size",
.lname = "SGL size used for I/O commands",
.type = FIO_OPT_INT,
.off1 = offsetof(struct spdk_fio_options, sge_size),
.def = "4096",
.help = "SGL size in bytes for I/O Commands (default 4096)",
.category = FIO_OPT_C_ENGINE,
.group = FIO_OPT_G_INVALID,
},
{
.name = "hostnqn",
.lname = "Host NQN to use when connecting to controllers.",

16
examples/nvme/fio_plugin/mock_sgl_config.fio Normal file
View File

@ -0,0 +1,16 @@
[global]
ioengine=spdk
thread=1
group_reporting=1
direct=1
verify=0
enable_sgl=1
time_based=1
ramp_time=0
runtime=2
iodepth=4
rw=randrw
bs=16k
[test]
numjobs=1

4
test/nvmf/host/fio.sh
View File

@ -50,6 +50,10 @@ PLUGIN_DIR=$rootdir/examples/nvme/fio_plugin
# Test fio_plugin as host with malloc backend
LD_PRELOAD=$PLUGIN_DIR/fio_plugin /usr/src/fio/fio $PLUGIN_DIR/example_config.fio --filename="trtype=RDMA adrfam=IPv4 \
traddr=$NVMF_FIRST_TARGET_IP trsvcid=4420 ns=1"
# second test mocking multiple SGL elements
LD_PRELOAD=$PLUGIN_DIR/fio_plugin /usr/src/fio/fio $PLUGIN_DIR/mock_sgl_config.fio --filename="trtype=RDMA adrfam=IPv4 \
traddr=$NVMF_FIRST_TARGET_IP trsvcid=4420 ns=1"
$rpc_py delete_nvmf_subsystem nqn.2016-06.io.spdk:cnode1
if [ $RUN_NIGHTLY -eq 1 ]; then