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test/reduce: allow for non-synchronous operations

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In some upcoming unit tests, we will need to test
overlapped I/O operations, so add a facility in the
reduce unit tests to allow for that.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Ia9c6a3af3db104999f5d01e1115b0f1d164cef22

Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/448329
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: wuzhouhui <wuzhouhui@kingsoft.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
This commit is contained in:
Jim Harris 2019-03-18 05:22:31 -07:00
parent 670db76047
commit 94d353ea30
1 changed files with 170 additions and 4 deletions
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174
test/unit/lib/reduce/reduce.c/reduce_ut.c
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@ -50,6 +50,28 @@ static char g_path[REDUCE_PATH_MAX];
#define TEST_MD_PATH "/tmp"
enum ut_reduce_bdev_io_type {
UT_REDUCE_IO_READV = 1,
UT_REDUCE_IO_WRITEV = 2,
UT_REDUCE_IO_UNMAP = 3,
};
struct ut_reduce_bdev_io {
enum ut_reduce_bdev_io_type type;
struct spdk_reduce_backing_dev *backing_dev;
struct iovec *iov;
int iovcnt;
uint64_t lba;
uint32_t lba_count;
struct spdk_reduce_vol_cb_args *args;
TAILQ_ENTRY(ut_reduce_bdev_io) link;
};
static bool g_defer_bdev_io = false;
static TAILQ_HEAD(, ut_reduce_bdev_io) g_pending_bdev_io =
TAILQ_HEAD_INITIALIZER(g_pending_bdev_io);
static uint32_t g_pending_bdev_io_count = 0;
static void
sync_pm_buf(const void *addr, size_t length)
{
@ -237,11 +259,39 @@ backing_dev_readv_execute(struct spdk_reduce_backing_dev *backing_dev,
args->cb_fn(args->cb_arg, 0);
}
static void
backing_dev_insert_io(enum ut_reduce_bdev_io_type type, struct spdk_reduce_backing_dev *backing_dev,
struct iovec *iov, int iovcnt, uint64_t lba, uint32_t lba_count,
struct spdk_reduce_vol_cb_args *args)
{
struct ut_reduce_bdev_io *ut_bdev_io;
ut_bdev_io = calloc(1, sizeof(*ut_bdev_io));
SPDK_CU_ASSERT_FATAL(ut_bdev_io != NULL);
ut_bdev_io->type = type;
ut_bdev_io->backing_dev = backing_dev;
ut_bdev_io->iov = iov;
ut_bdev_io->iovcnt = iovcnt;
ut_bdev_io->lba = lba;
ut_bdev_io->lba_count = lba_count;
ut_bdev_io->args = args;
TAILQ_INSERT_TAIL(&g_pending_bdev_io, ut_bdev_io, link);
g_pending_bdev_io_count++;
}
static void
backing_dev_readv(struct spdk_reduce_backing_dev *backing_dev, struct iovec *iov, int iovcnt,
uint64_t lba, uint32_t lba_count, struct spdk_reduce_vol_cb_args *args)
{
backing_dev_readv_execute(backing_dev, iov, iovcnt, lba, lba_count, args);
if (g_defer_bdev_io == false) {
CU_ASSERT(g_pending_bdev_io_count == 0);
CU_ASSERT(TAILQ_EMPTY(&g_pending_bdev_io));
backing_dev_readv_execute(backing_dev, iov, iovcnt, lba, lba_count, args);
return;
}
backing_dev_insert_io(UT_REDUCE_IO_READV, backing_dev, iov, iovcnt, lba, lba_count, args);
}
static void
@ -265,7 +315,14 @@ static void
backing_dev_writev(struct spdk_reduce_backing_dev *backing_dev, struct iovec *iov, int iovcnt,
uint64_t lba, uint32_t lba_count, struct spdk_reduce_vol_cb_args *args)
{
backing_dev_writev_execute(backing_dev, iov, iovcnt, lba, lba_count, args);
if (g_defer_bdev_io == false) {
CU_ASSERT(g_pending_bdev_io_count == 0);
CU_ASSERT(TAILQ_EMPTY(&g_pending_bdev_io));
backing_dev_writev_execute(backing_dev, iov, iovcnt, lba, lba_count, args);
return;
}
backing_dev_insert_io(UT_REDUCE_IO_WRITEV, backing_dev, iov, iovcnt, lba, lba_count, args);
}
static void
@ -284,7 +341,52 @@ static void
backing_dev_unmap(struct spdk_reduce_backing_dev *backing_dev,
uint64_t lba, uint32_t lba_count, struct spdk_reduce_vol_cb_args *args)
{
backing_dev_unmap_execute(backing_dev, lba, lba_count, args);
if (g_defer_bdev_io == false) {
CU_ASSERT(g_pending_bdev_io_count == 0);
CU_ASSERT(TAILQ_EMPTY(&g_pending_bdev_io));
backing_dev_unmap_execute(backing_dev, lba, lba_count, args);
return;
}
backing_dev_insert_io(UT_REDUCE_IO_UNMAP, backing_dev, NULL, 0, lba, lba_count, args);
}
static void
backing_dev_io_execute(uint32_t count)
{
struct ut_reduce_bdev_io *ut_bdev_io;
uint32_t done = 0;
CU_ASSERT(g_defer_bdev_io == true);
while (!TAILQ_EMPTY(&g_pending_bdev_io) && (count == 0 || done < count)) {
ut_bdev_io = TAILQ_FIRST(&g_pending_bdev_io);
TAILQ_REMOVE(&g_pending_bdev_io, ut_bdev_io, link);
g_pending_bdev_io_count--;
switch (ut_bdev_io->type) {
case UT_REDUCE_IO_READV:
backing_dev_readv_execute(ut_bdev_io->backing_dev,
ut_bdev_io->iov, ut_bdev_io->iovcnt,
ut_bdev_io->lba, ut_bdev_io->lba_count,
ut_bdev_io->args);
break;
case UT_REDUCE_IO_WRITEV:
backing_dev_writev_execute(ut_bdev_io->backing_dev,
ut_bdev_io->iov, ut_bdev_io->iovcnt,
ut_bdev_io->lba, ut_bdev_io->lba_count,
ut_bdev_io->args);
break;
case UT_REDUCE_IO_UNMAP:
backing_dev_unmap_execute(ut_bdev_io->backing_dev,
ut_bdev_io->lba, ut_bdev_io->lba_count,
ut_bdev_io->args);
break;
default:
CU_ASSERT(false);
break;
}
free(ut_bdev_io);
done++;
}
}
static void
@ -796,6 +898,69 @@ destroy(void)
backing_dev_destroy(&backing_dev);
}
/* This test primarily checks that the reduce unit test infrastructure for asynchronous
* backing device I/O operations is working correctly.
*/
static void
defer_bdev_io(void)
{
struct spdk_reduce_vol_params params = {};
struct spdk_reduce_backing_dev backing_dev = {};
const uint32_t logical_block_size = 512;
struct iovec iov;
char buf[logical_block_size];
char compare_buf[logical_block_size];
params.chunk_size = 16 * 1024;
params.backing_io_unit_size = 4096;
params.logical_block_size = logical_block_size;
spdk_uuid_generate(&params.uuid);
backing_dev_init(&backing_dev, &params, 512);
g_vol = NULL;
g_reduce_errno = -1;
spdk_reduce_vol_init(&params, &backing_dev, TEST_MD_PATH, init_cb, NULL);
CU_ASSERT(g_reduce_errno == 0);
SPDK_CU_ASSERT_FATAL(g_vol != NULL);
/* Write 0xAA to 1 512-byte logical block. */
memset(buf, 0xAA, params.logical_block_size);
iov.iov_base = buf;
iov.iov_len = params.logical_block_size;
g_reduce_errno = -100;
g_defer_bdev_io = true;
spdk_reduce_vol_writev(g_vol, &iov, 1, 0, 1, write_cb, NULL);
/* Callback should not have executed, so this should still equal -100. */
CU_ASSERT(g_reduce_errno == -100);
CU_ASSERT(!TAILQ_EMPTY(&g_pending_bdev_io));
/* We wrote to part of one chunk which was previously unallocated. This should result in
* 4 pending I/O - one for each backing io unit in the chunk.
*/
CU_ASSERT(g_pending_bdev_io_count == params.chunk_size / params.backing_io_unit_size);
backing_dev_io_execute(0);
CU_ASSERT(TAILQ_EMPTY(&g_pending_bdev_io));
CU_ASSERT(g_reduce_errno == 0);
g_defer_bdev_io = false;
memset(compare_buf, 0xAA, sizeof(compare_buf));
memset(buf, 0xFF, sizeof(buf));
iov.iov_base = buf;
iov.iov_len = params.logical_block_size;
g_reduce_errno = -100;
spdk_reduce_vol_readv(g_vol, &iov, 1, 0, 1, read_cb, NULL);
CU_ASSERT(g_reduce_errno == 0);
CU_ASSERT(memcmp(buf, compare_buf, sizeof(buf)) == 0);
g_reduce_errno = -1;
spdk_reduce_vol_unload(g_vol, unload_cb, NULL);
CU_ASSERT(g_reduce_errno == 0);
persistent_pm_buf_destroy();
backing_dev_destroy(&backing_dev);
}
int
main(int argc, char **argv)
{
@ -821,7 +986,8 @@ main(int argc, char **argv)
CU_add_test(suite, "load", load) == NULL ||
CU_add_test(suite, "write_maps", write_maps) == NULL ||
CU_add_test(suite, "read_write", read_write) == NULL ||
CU_add_test(suite, "destroy", destroy) == NULL
CU_add_test(suite, "destroy", destroy) == NULL ||
CU_add_test(suite, "defer_bdev_io", defer_bdev_io) == NULL
) {
CU_cleanup_registry();
return CU_get_error();