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test/raid1: unit tests for read balancing

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Signed-off-by: Krzysztof Smolinski <krzysztof.smolinski@intel.com>
Change-Id: Ic42bfe8be2d0d76e804a82b4837391384f01f8f8
This commit is contained in:
Krzysztof Smolinski 2022-11-04 09:09:03 +01:00 committed by David Ko
parent 4d783e7255
commit 52726c9b6e
1 changed files with 162 additions and 12 deletions
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174
test/unit/lib/bdev/raid/raid1.c/raid1_ut.c
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@ -14,11 +14,8 @@
DEFINE_STUB_V(raid_bdev_module_list_add, (struct raid_bdev_module *raid_module));
DEFINE_STUB_V(raid_bdev_module_stop_done, (struct raid_bdev *raid_bdev));
DEFINE_STUB_V(raid_bdev_io_complete, (struct raid_bdev_io *raid_io,
enum spdk_bdev_io_status status));
DEFINE_STUB(raid_bdev_io_complete_part, bool, (struct raid_bdev_io *raid_io, uint64_t completed,
enum spdk_bdev_io_status status), true);
DEFINE_STUB_V(spdk_bdev_free_io, (struct spdk_bdev_io *bdev_io));
DEFINE_STUB_V(raid_bdev_queue_io_wait, (struct raid_bdev_io *raid_io, struct spdk_bdev *bdev,
struct spdk_io_channel *ch, spdk_bdev_io_wait_cb cb_fn));
DEFINE_STUB(spdk_bdev_readv_blocks_with_md, int, (struct spdk_bdev_desc *desc,
@ -95,9 +92,9 @@ create_raid1(struct raid_params *params)
}
static void
delete_raid1(struct raid1_info *r1_info)
delete_raid1(struct raid1_info *r1info)
{
struct raid_bdev *raid_bdev = r1_info->raid_bdev;
struct raid_bdev *raid_bdev = r1info->raid_bdev;
raid1_stop(raid_bdev);
@ -110,20 +107,171 @@ test_raid1_start(void)
struct raid_params *params;
RAID_PARAMS_FOR_EACH(params) {
struct raid1_info *r1_info;
struct raid1_info *r1info;
r1_info = create_raid1(params);
r1info = create_raid1(params);
SPDK_CU_ASSERT_FATAL(r1_info != NULL);
SPDK_CU_ASSERT_FATAL(r1info != NULL);
CU_ASSERT_EQUAL(r1_info->raid_bdev->level, RAID1);
CU_ASSERT_EQUAL(r1_info->raid_bdev->bdev.blockcnt, params->base_bdev_blockcnt);
CU_ASSERT_PTR_EQUAL(r1_info->raid_bdev->module, &g_raid1_module);
CU_ASSERT_EQUAL(r1info->raid_bdev->level, RAID1);
CU_ASSERT_EQUAL(r1info->raid_bdev->bdev.blockcnt, params->base_bdev_blockcnt);
CU_ASSERT_PTR_EQUAL(r1info->raid_bdev->module, &g_raid1_module);
delete_raid1(r1_info);
delete_raid1(r1info);
}
}
void
spdk_bdev_free_io(struct spdk_bdev_io *bdev_io)
{
free(bdev_io);
}
void
raid_bdev_io_complete(struct raid_bdev_io *raid_io, enum spdk_bdev_io_status status)
{
struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(raid_io);
spdk_bdev_free_io(bdev_io);
}
static struct raid_bdev_io *
get_raid_io(struct raid1_info *r1info, struct raid_bdev_io_channel *raid_ch,
enum spdk_bdev_io_type io_type, uint64_t num_blocks)
{
struct spdk_bdev_io *bdev_io;
struct raid_bdev_io *raid_io;
bdev_io = calloc(1, sizeof(struct spdk_bdev_io) + sizeof(struct raid_bdev_io));
SPDK_CU_ASSERT_FATAL(bdev_io != NULL);
bdev_io->bdev = &r1info->raid_bdev->bdev;
bdev_io->type = io_type;
bdev_io->u.bdev.offset_blocks = 0;
bdev_io->u.bdev.num_blocks = num_blocks;
bdev_io->internal.cb = NULL;
bdev_io->internal.caller_ctx = NULL;
raid_io = (void *)bdev_io->driver_ctx;
raid_io->raid_bdev = r1info->raid_bdev;
raid_io->raid_ch = raid_ch;
return raid_io;
}
static void
run_for_each_raid1_config(void (*test_fn)(struct raid_bdev *raid_bdev,
struct raid_bdev_io_channel *raid_ch))
{
struct raid_params *params;
RAID_PARAMS_FOR_EACH(params) {
struct raid1_info *r1info;
struct raid_bdev_io_channel raid_ch = { 0 };
int i;
r1info = create_raid1(params);
raid_ch.num_channels = params->num_base_bdevs;
raid_ch.base_channel = calloc(params->num_base_bdevs, sizeof(struct spdk_io_channel *));
SPDK_CU_ASSERT_FATAL(raid_ch.base_channel != NULL);
for (i = 0; i < raid_ch.num_channels; i++) {
raid_ch.base_channel[i] = calloc(1, sizeof(*raid_ch.base_channel));
}
raid_ch.module_channel = raid1_get_io_channel(r1info->raid_bdev);
SPDK_CU_ASSERT_FATAL(raid_ch.module_channel);
test_fn(r1info->raid_bdev, &raid_ch);
spdk_put_io_channel(raid_ch.module_channel);
poll_threads();
for (i = 0; i < raid_ch.num_channels; i++) {
free(raid_ch.base_channel[i]);
}
free(raid_ch.base_channel);
delete_raid1(r1info);
}
}
static void
__test_raid1_read_balancing(struct raid_bdev *raid_bdev, struct raid_bdev_io_channel *raid_ch)
{
struct raid1_info *r1info = raid_bdev->module_private;
struct raid_bdev_io *raid_io;
struct raid1_io_channel *raid1_ch = spdk_io_channel_get_ctx(raid_ch->module_channel);
uint8_t overloaded_ch_idx = 0;
uint64_t big_io_blocks = 256;
uint64_t small_io_blocks = 4;
bool found_greater = false;
raid_io = get_raid_io(r1info, raid_ch, SPDK_BDEV_IO_TYPE_READ, big_io_blocks);
raid1_submit_rw_request(raid_io);
raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_SUCCESS);
overloaded_ch_idx = raid1_ch->base_bdev_read_idx;
do {
raid_io = get_raid_io(r1info, raid_ch, SPDK_BDEV_IO_TYPE_READ, small_io_blocks);
raid1_submit_rw_request(raid_io);
raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_SUCCESS);
} while (raid1_ch->base_bdev_read_idx != overloaded_ch_idx);
for (uint8_t i = 0; i < raid_ch->num_channels; i++) {
if (i == overloaded_ch_idx) {
continue;
}
if (raid1_ch->base_bdev_read_bw[i] >= raid1_ch->base_bdev_read_bw[overloaded_ch_idx] -
small_io_blocks) {
found_greater = true;
break;
}
}
CU_ASSERT_TRUE(found_greater);
}
static void
test_raid1_read_balancing(void)
{
run_for_each_raid1_config(__test_raid1_read_balancing);
}
static void
__test_raid1_read_balancing_limit_reset(struct raid_bdev *raid_bdev,
struct raid_bdev_io_channel *raid_ch)
{
struct raid1_info *r1info = raid_bdev->module_private;
struct raid_bdev_io *raid_io;
struct raid1_io_channel *raid1_ch = spdk_io_channel_get_ctx(raid_ch->module_channel);
uint64_t read_io_blocks = 64;
raid1_ch->base_bdev_max_read_bw = UINT64_MAX - (read_io_blocks / 2);
for (uint8_t i = 0; i < raid_ch->num_channels; i++) {
raid1_ch->base_bdev_read_bw[i] = UINT64_MAX - (read_io_blocks / 2);
}
raid_io = get_raid_io(r1info, raid_ch, SPDK_BDEV_IO_TYPE_READ, read_io_blocks);
raid1_submit_rw_request(raid_io);
raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_SUCCESS);
for (uint8_t i = 0; i < raid_ch->num_channels; i++) {
if (i == raid1_ch->base_bdev_read_idx) {
continue;
}
CU_ASSERT_EQUAL(raid1_ch->base_bdev_read_bw[i], 0);
}
}
static void
test_raid1_read_balancing_limit_reset(void)
{
run_for_each_raid1_config(__test_raid1_read_balancing_limit_reset);
}
int
main(int argc, char **argv)
{
@ -135,6 +283,8 @@ main(int argc, char **argv)
suite = CU_add_suite("raid1", test_setup, test_cleanup);
CU_ADD_TEST(suite, test_raid1_start);
CU_ADD_TEST(suite, test_raid1_read_balancing);
CU_ADD_TEST(suite, test_raid1_read_balancing_limit_reset);
allocate_threads(1);
set_thread(0);