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UT/bdev: add IO boundary splitting unit test

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Change-Id: If7c74dec31468b2fcd5fb761e5bc4f35a8d52f3a
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/453195
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
This commit is contained in:
Changpeng Liu 2019-05-07 23:30:23 -04:00
parent 5d718951a6
commit 45f480535b
1 changed files with 138 additions and 0 deletions
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138
test/unit/lib/bdev/bdev.c/bdev_ut.c
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@ -1590,6 +1590,143 @@ bdev_io_alignment(void)
free(buf);
}
static void
bdev_io_alignment_with_boundary(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, 131072);
SPDK_CU_ASSERT_FATAL(rc == 0);
g_io_exp_status = SPDK_BDEV_IO_STATUS_SUCCESS;
/* 512 * 3 with 2 IO boundary, allocate small data buffer from bdev layer */
alignment = 512;
bdev->required_alignment = spdk_u32log2(alignment);
bdev->optimal_io_boundary = 2;
bdev->split_on_optimal_io_boundary = true;
iovcnt = 1;
iovs[0].iov_base = NULL;
iovs[0].iov_len = 512 * 3;
rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 3, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
stub_complete_io(2);
/* 8KiB with 16 IO boundary, allocate large data buffer from bdev layer */
alignment = 512;
bdev->required_alignment = spdk_u32log2(alignment);
bdev->optimal_io_boundary = 16;
bdev->split_on_optimal_io_boundary = true;
iovcnt = 1;
iovs[0].iov_base = NULL;
iovs[0].iov_len = 512 * 16;
rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 16, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
stub_complete_io(2);
/* 512 * 160 with 128 IO boundary, 63.5KiB + 16.5KiB for the two children requests */
alignment = 512;
bdev->required_alignment = spdk_u32log2(alignment);
bdev->optimal_io_boundary = 128;
bdev->split_on_optimal_io_boundary = true;
iovcnt = 1;
iovs[0].iov_base = buf + 16;
iovs[0].iov_len = 512 * 160;
rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 160, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
stub_complete_io(2);
/* 512 * 3 with 2 IO boundary */
alignment = 512;
bdev->required_alignment = spdk_u32log2(alignment);
bdev->optimal_io_boundary = 2;
bdev->split_on_optimal_io_boundary = true;
iovcnt = 2;
iovs[0].iov_base = buf + 16;
iovs[0].iov_len = 512;
iovs[1].iov_base = buf + 16 + 512 + 32;
iovs[1].iov_len = 1024;
rc = spdk_bdev_writev_blocks(desc, io_ch, iovs, iovcnt, 1, 3, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
stub_complete_io(2);
rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 3, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 2);
stub_complete_io(2);
/* 512 * 64 with 32 IO boundary */
bdev->optimal_io_boundary = 32;
iovcnt = 2;
iovs[0].iov_base = buf + 16;
iovs[0].iov_len = 16384;
iovs[1].iov_base = buf + 16 + 16384 + 32;
iovs[1].iov_len = 16384;
rc = spdk_bdev_writev_blocks(desc, io_ch, iovs, iovcnt, 1, 64, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
stub_complete_io(3);
rc = spdk_bdev_readv_blocks(desc, io_ch, iovs, iovcnt, 1, 64, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 3);
stub_complete_io(3);
/* 512 * 160 with 32 IO boundary */
iovcnt = 1;
iovs[0].iov_base = buf + 16;
iovs[0].iov_len = 16384 + 65536;
rc = spdk_bdev_writev_blocks(desc, io_ch, iovs, iovcnt, 1, 160, io_done, NULL);
CU_ASSERT(rc == 0);
CU_ASSERT(g_bdev_ut_channel->outstanding_io_count == 6);
stub_complete_io(6);
spdk_put_io_channel(io_ch);
spdk_bdev_close(desc);
free_bdev(bdev);
spdk_bdev_finish(bdev_fini_cb, NULL);
poll_threads();
free(buf);
}
static void
histogram_status_cb(void *cb_arg, int status)
{
@ -1830,6 +1967,7 @@ main(int argc, char **argv)
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_alignment_with_boundary", bdev_io_alignment_with_boundary) == NULL ||
CU_add_test(suite, "bdev_io_alignment", bdev_io_alignment) == NULL ||
CU_add_test(suite, "bdev_histograms", bdev_histograms) == NULL ||
CU_add_test(suite, "bdev_write_zeroes", bdev_write_zeroes) == NULL