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bdev: add unit tests for double buffering in bdev modules

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Signed-off-by: Piotr Pelplinski <piotr.pelplinski@intel.com>
Change-Id: Idcfb328a26fc85f3c144da9c27086a71c00d0d46
Reviewed-on: https://review.gerrithub.io/427830
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
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>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Maciej Szwed <maciej.szwed@intel.com>
This commit is contained in:
Piotr Pelplinski 2018-10-22 15:08:11 +02:00 committed by Jim Harris
parent c1f1a876aa
commit dadd2a6dc0
2 changed files with 230 additions and 2 deletions
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2
test/common/lib/test_env.c
View File

@ -221,7 +221,7 @@ spdk_mempool_get(struct spdk_mempool *_mp)
return NULL;
}
if (posix_memalign(&buf, 64, 0x1000)) {
if (posix_memalign(&buf, 64, 0x10000)) {
return NULL;
} else {
if (mp) {

230
test/unit/lib/bdev/bdev.c/bdev_ut.c
View File

@ -105,6 +105,7 @@ struct bdev_ut_channel {
};
static bool g_io_done;
static struct spdk_bdev_io *g_bdev_io;
static enum spdk_bdev_io_status g_io_status;
static uint32_t g_bdev_ut_io_device;
static struct bdev_ut_channel *g_bdev_ut_channel;
@ -140,6 +141,8 @@ stub_submit_request(struct spdk_io_channel *_ch, struct spdk_bdev_io *bdev_io)
struct iovec *iov, *expected_iov;
int i;
g_bdev_io = bdev_io;
TAILQ_INSERT_TAIL(&ch->outstanding_io, bdev_io, module_link);
ch->outstanding_io_count++;
@ -178,6 +181,13 @@ stub_submit_request(struct spdk_io_channel *_ch, struct spdk_bdev_io *bdev_io)
free(expected_io);
}
static void
stub_submit_request_aligned_buffer(struct spdk_io_channel *_ch, struct spdk_bdev_io *bdev_io)
{
spdk_bdev_io_get_buf(bdev_io, stub_submit_request,
bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen);
}
static uint32_t
stub_complete_io(uint32_t num_to_complete)
{
@ -1172,6 +1182,223 @@ bdev_io_split_with_io_wait(void)
spdk_bdev_finish(bdev_fini_cb, NULL);
}
static void
bdev_io_alignment(void)
{
struct spdk_bdev *bdev;
struct spdk_bdev_desc *desc;
struct spdk_io_channel *io_ch;
struct spdk_bdev_opts bdev_opts = {
.bdev_io_pool_size = 20,
.bdev_io_cache_size = 2,
};
int rc;
void *buf;
struct iovec iovs[2];
int iovcnt;
uint64_t alignment;
rc = spdk_bdev_set_opts(&bdev_opts);
CU_ASSERT(rc == 0);
spdk_bdev_initialize(bdev_init_cb, NULL);
fn_table.submit_request = stub_submit_request_aligned_buffer;
bdev = allocate_bdev("bdev0");
rc = spdk_bdev_open(bdev, true, NULL, NULL, &desc);
CU_ASSERT(rc == 0);
CU_ASSERT(desc != NULL);
io_ch = spdk_bdev_get_io_channel(desc);
CU_ASSERT(io_ch != NULL);
/* Create aligned buffer */
rc = posix_memalign(&buf, 4096, 8192);
SPDK_CU_ASSERT_FATAL(rc == 0);
/* Pass aligned single buffer with no alignment required */
alignment = 1;
bdev->required_alignment = spdk_u32log2(alignment);
rc = spdk_bdev_write_blocks(desc, io_ch, buf, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
stub_complete_io(1);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
rc = spdk_bdev_read_blocks(desc, io_ch, buf, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
stub_complete_io(1);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
/* Pass unaligned single buffer with no alignment required */
alignment = 1;
bdev->required_alignment = spdk_u32log2(alignment);
rc = spdk_bdev_write_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == buf + 4);
stub_complete_io(1);
rc = spdk_bdev_read_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == buf + 4);
stub_complete_io(1);
/* Pass unaligned single buffer with 512 alignment required */
alignment = 512;
bdev->required_alignment = spdk_u32log2(alignment);
rc = spdk_bdev_write_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
rc = spdk_bdev_read_blocks(desc, io_ch, buf + 4, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
/* Pass unaligned single buffer with 4096 alignment required */
alignment = 4096;
bdev->required_alignment = spdk_u32log2(alignment);
rc = spdk_bdev_write_blocks(desc, io_ch, buf + 8, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
rc = spdk_bdev_read_blocks(desc, io_ch, buf + 8, 0, 1, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 1);
CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
/* Pass aligned iovs with no alignment required */
alignment = 1;
bdev->required_alignment = spdk_u32log2(alignment);
iovcnt = 1;
iovs[0].iov_base = buf;
iovs[0].iov_len = 512;
rc = spdk_bdev_writev(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
stub_complete_io(1);
CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
stub_complete_io(1);
CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
/* Pass unaligned iovs with no alignment required */
alignment = 1;
bdev->required_alignment = spdk_u32log2(alignment);
iovcnt = 2;
iovs[0].iov_base = buf + 16;
iovs[0].iov_len = 256;
iovs[1].iov_base = buf + 16 + 256 + 32;
iovs[1].iov_len = 256;
rc = spdk_bdev_writev(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
stub_complete_io(1);
CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
stub_complete_io(1);
CU_ASSERT(g_bdev_io->u.bdev.iovs[0].iov_base == iovs[0].iov_base);
/* Pass unaligned iov with 2048 alignment required */
alignment = 2048;
bdev->required_alignment = spdk_u32log2(alignment);
iovcnt = 2;
iovs[0].iov_base = buf + 16;
iovs[0].iov_len = 256;
iovs[1].iov_base = buf + 16 + 256 + 32;
iovs[1].iov_len = 256;
rc = spdk_bdev_writev(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == iovcnt);
CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == iovcnt);
CU_ASSERT(g_bdev_io->u.bdev.iovs == &g_bdev_io->internal.bounce_iov);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
/* Pass iov without allocated buffer without alignment required */
alignment = 1;
bdev->required_alignment = spdk_u32log2(alignment);
iovcnt = 1;
iovs[0].iov_base = NULL;
iovs[0].iov_len = 0;
rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
/* Pass iov without allocated buffer with 1024 alignment required */
alignment = 1024;
bdev->required_alignment = spdk_u32log2(alignment);
iovcnt = 1;
iovs[0].iov_base = NULL;
iovs[0].iov_len = 0;
rc = spdk_bdev_readv(desc, io_ch, iovs, iovcnt, 0, 512, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_io->internal.orig_iovcnt == 0);
CU_ASSERT(_are_iovs_aligned(g_bdev_io->u.bdev.iovs, g_bdev_io->u.bdev.iovcnt,
alignment));
stub_complete_io(1);
spdk_put_io_channel(io_ch);
spdk_bdev_close(desc);
free_bdev(bdev);
spdk_bdev_finish(bdev_fini_cb, NULL);
free(buf);
}
int
main(int argc, char **argv)
{
@ -1198,7 +1425,8 @@ main(int argc, char **argv)
CU_add_test(suite, "bdev_io_wait", bdev_io_wait_test) == NULL ||
CU_add_test(suite, "bdev_io_spans_boundary", bdev_io_spans_boundary_test) == NULL ||
CU_add_test(suite, "bdev_io_split", bdev_io_split) == NULL ||
CU_add_test(suite, "bdev_io_split_with_io_wait", bdev_io_split_with_io_wait) == NULL
CU_add_test(suite, "bdev_io_split_with_io_wait", bdev_io_split_with_io_wait) == NULL ||
CU_add_test(suite, "bdev_io_alignment", bdev_io_alignment) == NULL
) {
CU_cleanup_registry();
return CU_get_error();