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qemu/tests/test-bdrv-drain.c
Kevin Wolf 80fa2c756b job: Add reference counting 
This moves reference counting from BlockJob to Job.

In order to keep calling the BlockJob cleanup code when the job is
deleted via job_unref(), introduce a new JobDriver.free callback. Every
block job must use block_job_free() for this callback, this is asserted
in block_job_create().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2018-05-23 14:30:49 +02:00

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20 KiB
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/*
* Block node draining tests
*
* Copyright (c) 2017 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "block/block.h"
#include "block/blockjob_int.h"
#include "sysemu/block-backend.h"
#include "qapi/error.h"
typedef struct BDRVTestState {
int drain_count;
} BDRVTestState;
static void coroutine_fn bdrv_test_co_drain_begin(BlockDriverState *bs)
{
BDRVTestState *s = bs->opaque;
s->drain_count++;
}
static void coroutine_fn bdrv_test_co_drain_end(BlockDriverState *bs)
{
BDRVTestState *s = bs->opaque;
s->drain_count--;
}
static void bdrv_test_close(BlockDriverState *bs)
{
BDRVTestState *s = bs->opaque;
g_assert_cmpint(s->drain_count, >, 0);
}
static int coroutine_fn bdrv_test_co_preadv(BlockDriverState *bs,
uint64_t offset, uint64_t bytes,
QEMUIOVector *qiov, int flags)
{
/* We want this request to stay until the polling loop in drain waits for
* it to complete. We need to sleep a while as bdrv_drain_invoke() comes
* first and polls its result, too, but it shouldn't accidentally complete
* this request yet. */
qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 100000);
return 0;
}
static BlockDriver bdrv_test = {
.format_name = "test",
.instance_size = sizeof(BDRVTestState),
.bdrv_close = bdrv_test_close,
.bdrv_co_preadv = bdrv_test_co_preadv,
.bdrv_co_drain_begin = bdrv_test_co_drain_begin,
.bdrv_co_drain_end = bdrv_test_co_drain_end,
.bdrv_child_perm = bdrv_format_default_perms,
};
static void aio_ret_cb(void *opaque, int ret)
{
int *aio_ret = opaque;
*aio_ret = ret;
}
typedef struct CallInCoroutineData {
void (*entry)(void);
bool done;
} CallInCoroutineData;
static coroutine_fn void call_in_coroutine_entry(void *opaque)
{
CallInCoroutineData *data = opaque;
data->entry();
data->done = true;
}
static void call_in_coroutine(void (*entry)(void))
{
Coroutine *co;
CallInCoroutineData data = {
.entry = entry,
.done = false,
};
co = qemu_coroutine_create(call_in_coroutine_entry, &data);
qemu_coroutine_enter(co);
while (!data.done) {
aio_poll(qemu_get_aio_context(), true);
}
}
enum drain_type {
BDRV_DRAIN_ALL,
BDRV_DRAIN,
BDRV_SUBTREE_DRAIN,
DRAIN_TYPE_MAX,
};
static void do_drain_begin(enum drain_type drain_type, BlockDriverState *bs)
{
switch (drain_type) {
case BDRV_DRAIN_ALL: bdrv_drain_all_begin(); break;
case BDRV_DRAIN: bdrv_drained_begin(bs); break;
case BDRV_SUBTREE_DRAIN: bdrv_subtree_drained_begin(bs); break;
default: g_assert_not_reached();
}
}
static void do_drain_end(enum drain_type drain_type, BlockDriverState *bs)
{
switch (drain_type) {
case BDRV_DRAIN_ALL: bdrv_drain_all_end(); break;
case BDRV_DRAIN: bdrv_drained_end(bs); break;
case BDRV_SUBTREE_DRAIN: bdrv_subtree_drained_end(bs); break;
default: g_assert_not_reached();
}
}
static void test_drv_cb_common(enum drain_type drain_type, bool recursive)
{
BlockBackend *blk;
BlockDriverState *bs, *backing;
BDRVTestState *s, *backing_s;
BlockAIOCB *acb;
int aio_ret;
QEMUIOVector qiov;
struct iovec iov = {
.iov_base = NULL,
.iov_len = 0,
};
qemu_iovec_init_external(&qiov, &iov, 1);
blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
bs = bdrv_new_open_driver(&bdrv_test, "test-node", BDRV_O_RDWR,
&error_abort);
s = bs->opaque;
blk_insert_bs(blk, bs, &error_abort);
backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
backing_s = backing->opaque;
bdrv_set_backing_hd(bs, backing, &error_abort);
/* Simple bdrv_drain_all_begin/end pair, check that CBs are called */
g_assert_cmpint(s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
do_drain_begin(drain_type, bs);
g_assert_cmpint(s->drain_count, ==, 1);
g_assert_cmpint(backing_s->drain_count, ==, !!recursive);
do_drain_end(drain_type, bs);
g_assert_cmpint(s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
/* Now do the same while a request is pending */
aio_ret = -EINPROGRESS;
acb = blk_aio_preadv(blk, 0, &qiov, 0, aio_ret_cb, &aio_ret);
g_assert(acb != NULL);
g_assert_cmpint(aio_ret, ==, -EINPROGRESS);
g_assert_cmpint(s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
do_drain_begin(drain_type, bs);
g_assert_cmpint(aio_ret, ==, 0);
g_assert_cmpint(s->drain_count, ==, 1);
g_assert_cmpint(backing_s->drain_count, ==, !!recursive);
do_drain_end(drain_type, bs);
g_assert_cmpint(s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
bdrv_unref(backing);
bdrv_unref(bs);
blk_unref(blk);
}
static void test_drv_cb_drain_all(void)
{
test_drv_cb_common(BDRV_DRAIN_ALL, true);
}
static void test_drv_cb_drain(void)
{
test_drv_cb_common(BDRV_DRAIN, false);
}
static void test_drv_cb_drain_subtree(void)
{
test_drv_cb_common(BDRV_SUBTREE_DRAIN, true);
}
static void test_drv_cb_co_drain(void)
{
call_in_coroutine(test_drv_cb_drain);
}
static void test_drv_cb_co_drain_subtree(void)
{
call_in_coroutine(test_drv_cb_drain_subtree);
}
static void test_quiesce_common(enum drain_type drain_type, bool recursive)
{
BlockBackend *blk;
BlockDriverState *bs, *backing;
blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
bs = bdrv_new_open_driver(&bdrv_test, "test-node", BDRV_O_RDWR,
&error_abort);
blk_insert_bs(blk, bs, &error_abort);
backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
bdrv_set_backing_hd(bs, backing, &error_abort);
g_assert_cmpint(bs->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
do_drain_begin(drain_type, bs);
g_assert_cmpint(bs->quiesce_counter, ==, 1);
g_assert_cmpint(backing->quiesce_counter, ==, !!recursive);
do_drain_end(drain_type, bs);
g_assert_cmpint(bs->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
bdrv_unref(backing);
bdrv_unref(bs);
blk_unref(blk);
}
static void test_quiesce_drain_all(void)
{
// XXX drain_all doesn't quiesce
//test_quiesce_common(BDRV_DRAIN_ALL, true);
}
static void test_quiesce_drain(void)
{
test_quiesce_common(BDRV_DRAIN, false);
}
static void test_quiesce_drain_subtree(void)
{
test_quiesce_common(BDRV_SUBTREE_DRAIN, true);
}
static void test_quiesce_co_drain(void)
{
call_in_coroutine(test_quiesce_drain);
}
static void test_quiesce_co_drain_subtree(void)
{
call_in_coroutine(test_quiesce_drain_subtree);
}
static void test_nested(void)
{
BlockBackend *blk;
BlockDriverState *bs, *backing;
BDRVTestState *s, *backing_s;
enum drain_type outer, inner;
blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
bs = bdrv_new_open_driver(&bdrv_test, "test-node", BDRV_O_RDWR,
&error_abort);
s = bs->opaque;
blk_insert_bs(blk, bs, &error_abort);
backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
backing_s = backing->opaque;
bdrv_set_backing_hd(bs, backing, &error_abort);
for (outer = 0; outer < DRAIN_TYPE_MAX; outer++) {
for (inner = 0; inner < DRAIN_TYPE_MAX; inner++) {
/* XXX bdrv_drain_all() doesn't increase the quiesce_counter */
int bs_quiesce = (outer != BDRV_DRAIN_ALL) +
(inner != BDRV_DRAIN_ALL);
int backing_quiesce = (outer == BDRV_SUBTREE_DRAIN) +
(inner == BDRV_SUBTREE_DRAIN);
int backing_cb_cnt = (outer != BDRV_DRAIN) +
(inner != BDRV_DRAIN);
g_assert_cmpint(bs->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
g_assert_cmpint(s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
do_drain_begin(outer, bs);
do_drain_begin(inner, bs);
g_assert_cmpint(bs->quiesce_counter, ==, bs_quiesce);
g_assert_cmpint(backing->quiesce_counter, ==, backing_quiesce);
g_assert_cmpint(s->drain_count, ==, 2);
g_assert_cmpint(backing_s->drain_count, ==, backing_cb_cnt);
do_drain_end(inner, bs);
do_drain_end(outer, bs);
g_assert_cmpint(bs->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
g_assert_cmpint(s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
}
}
bdrv_unref(backing);
bdrv_unref(bs);
blk_unref(blk);
}
static void test_multiparent(void)
{
BlockBackend *blk_a, *blk_b;
BlockDriverState *bs_a, *bs_b, *backing;
BDRVTestState *a_s, *b_s, *backing_s;
blk_a = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
bs_a = bdrv_new_open_driver(&bdrv_test, "test-node-a", BDRV_O_RDWR,
&error_abort);
a_s = bs_a->opaque;
blk_insert_bs(blk_a, bs_a, &error_abort);
blk_b = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
bs_b = bdrv_new_open_driver(&bdrv_test, "test-node-b", BDRV_O_RDWR,
&error_abort);
b_s = bs_b->opaque;
blk_insert_bs(blk_b, bs_b, &error_abort);
backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
backing_s = backing->opaque;
bdrv_set_backing_hd(bs_a, backing, &error_abort);
bdrv_set_backing_hd(bs_b, backing, &error_abort);
g_assert_cmpint(bs_a->quiesce_counter, ==, 0);
g_assert_cmpint(bs_b->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
g_assert_cmpint(a_s->drain_count, ==, 0);
g_assert_cmpint(b_s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
do_drain_begin(BDRV_SUBTREE_DRAIN, bs_a);
g_assert_cmpint(bs_a->quiesce_counter, ==, 1);
g_assert_cmpint(bs_b->quiesce_counter, ==, 1);
g_assert_cmpint(backing->quiesce_counter, ==, 1);
g_assert_cmpint(a_s->drain_count, ==, 1);
g_assert_cmpint(b_s->drain_count, ==, 1);
g_assert_cmpint(backing_s->drain_count, ==, 1);
do_drain_begin(BDRV_SUBTREE_DRAIN, bs_b);
g_assert_cmpint(bs_a->quiesce_counter, ==, 2);
g_assert_cmpint(bs_b->quiesce_counter, ==, 2);
g_assert_cmpint(backing->quiesce_counter, ==, 2);
g_assert_cmpint(a_s->drain_count, ==, 2);
g_assert_cmpint(b_s->drain_count, ==, 2);
g_assert_cmpint(backing_s->drain_count, ==, 2);
do_drain_end(BDRV_SUBTREE_DRAIN, bs_b);
g_assert_cmpint(bs_a->quiesce_counter, ==, 1);
g_assert_cmpint(bs_b->quiesce_counter, ==, 1);
g_assert_cmpint(backing->quiesce_counter, ==, 1);
g_assert_cmpint(a_s->drain_count, ==, 1);
g_assert_cmpint(b_s->drain_count, ==, 1);
g_assert_cmpint(backing_s->drain_count, ==, 1);
do_drain_end(BDRV_SUBTREE_DRAIN, bs_a);
g_assert_cmpint(bs_a->quiesce_counter, ==, 0);
g_assert_cmpint(bs_b->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
g_assert_cmpint(a_s->drain_count, ==, 0);
g_assert_cmpint(b_s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
bdrv_unref(backing);
bdrv_unref(bs_a);
bdrv_unref(bs_b);
blk_unref(blk_a);
blk_unref(blk_b);
}
static void test_graph_change(void)
{
BlockBackend *blk_a, *blk_b;
BlockDriverState *bs_a, *bs_b, *backing;
BDRVTestState *a_s, *b_s, *backing_s;
blk_a = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
bs_a = bdrv_new_open_driver(&bdrv_test, "test-node-a", BDRV_O_RDWR,
&error_abort);
a_s = bs_a->opaque;
blk_insert_bs(blk_a, bs_a, &error_abort);
blk_b = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
bs_b = bdrv_new_open_driver(&bdrv_test, "test-node-b", BDRV_O_RDWR,
&error_abort);
b_s = bs_b->opaque;
blk_insert_bs(blk_b, bs_b, &error_abort);
backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
backing_s = backing->opaque;
bdrv_set_backing_hd(bs_a, backing, &error_abort);
g_assert_cmpint(bs_a->quiesce_counter, ==, 0);
g_assert_cmpint(bs_b->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
g_assert_cmpint(a_s->drain_count, ==, 0);
g_assert_cmpint(b_s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
do_drain_begin(BDRV_SUBTREE_DRAIN, bs_a);
do_drain_begin(BDRV_SUBTREE_DRAIN, bs_a);
do_drain_begin(BDRV_SUBTREE_DRAIN, bs_a);
do_drain_begin(BDRV_SUBTREE_DRAIN, bs_b);
do_drain_begin(BDRV_SUBTREE_DRAIN, bs_b);
bdrv_set_backing_hd(bs_b, backing, &error_abort);
g_assert_cmpint(bs_a->quiesce_counter, ==, 5);
g_assert_cmpint(bs_b->quiesce_counter, ==, 5);
g_assert_cmpint(backing->quiesce_counter, ==, 5);
g_assert_cmpint(a_s->drain_count, ==, 5);
g_assert_cmpint(b_s->drain_count, ==, 5);
g_assert_cmpint(backing_s->drain_count, ==, 5);
bdrv_set_backing_hd(bs_b, NULL, &error_abort);
g_assert_cmpint(bs_a->quiesce_counter, ==, 3);
g_assert_cmpint(bs_b->quiesce_counter, ==, 2);
g_assert_cmpint(backing->quiesce_counter, ==, 3);
g_assert_cmpint(a_s->drain_count, ==, 3);
g_assert_cmpint(b_s->drain_count, ==, 2);
g_assert_cmpint(backing_s->drain_count, ==, 3);
bdrv_set_backing_hd(bs_b, backing, &error_abort);
g_assert_cmpint(bs_a->quiesce_counter, ==, 5);
g_assert_cmpint(bs_b->quiesce_counter, ==, 5);
g_assert_cmpint(backing->quiesce_counter, ==, 5);
g_assert_cmpint(a_s->drain_count, ==, 5);
g_assert_cmpint(b_s->drain_count, ==, 5);
g_assert_cmpint(backing_s->drain_count, ==, 5);
do_drain_end(BDRV_SUBTREE_DRAIN, bs_b);
do_drain_end(BDRV_SUBTREE_DRAIN, bs_b);
do_drain_end(BDRV_SUBTREE_DRAIN, bs_a);
do_drain_end(BDRV_SUBTREE_DRAIN, bs_a);
do_drain_end(BDRV_SUBTREE_DRAIN, bs_a);
g_assert_cmpint(bs_a->quiesce_counter, ==, 0);
g_assert_cmpint(bs_b->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
g_assert_cmpint(a_s->drain_count, ==, 0);
g_assert_cmpint(b_s->drain_count, ==, 0);
g_assert_cmpint(backing_s->drain_count, ==, 0);
bdrv_unref(backing);
bdrv_unref(bs_a);
bdrv_unref(bs_b);
blk_unref(blk_a);
blk_unref(blk_b);
}
typedef struct TestBlockJob {
BlockJob common;
bool should_complete;
} TestBlockJob;
static void test_job_completed(BlockJob *job, void *opaque)
{
block_job_completed(job, 0);
}
static void coroutine_fn test_job_start(void *opaque)
{
TestBlockJob *s = opaque;
block_job_event_ready(&s->common);
while (!s->should_complete) {
block_job_sleep_ns(&s->common, 100000);
}
block_job_defer_to_main_loop(&s->common, test_job_completed, NULL);
}
static void test_job_complete(BlockJob *job, Error **errp)
{
TestBlockJob *s = container_of(job, TestBlockJob, common);
s->should_complete = true;
}
BlockJobDriver test_job_driver = {
.job_driver = {
.instance_size = sizeof(TestBlockJob),
.free = block_job_free,
},
.start = test_job_start,
.complete = test_job_complete,
};
static void test_blockjob_common(enum drain_type drain_type)
{
BlockBackend *blk_src, *blk_target;
BlockDriverState *src, *target;
BlockJob *job;
int ret;
src = bdrv_new_open_driver(&bdrv_test, "source", BDRV_O_RDWR,
&error_abort);
blk_src = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk_insert_bs(blk_src, src, &error_abort);
target = bdrv_new_open_driver(&bdrv_test, "target", BDRV_O_RDWR,
&error_abort);
blk_target = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk_insert_bs(blk_target, target, &error_abort);
job = block_job_create("job0", &test_job_driver, NULL, src, 0, BLK_PERM_ALL,
0, 0, NULL, NULL, &error_abort);
block_job_add_bdrv(job, "target", target, 0, BLK_PERM_ALL, &error_abort);
block_job_start(job);
g_assert_cmpint(job->pause_count, ==, 0);
g_assert_false(job->paused);
g_assert_false(job->busy); /* We're in block_job_sleep_ns() */
do_drain_begin(drain_type, src);
if (drain_type == BDRV_DRAIN_ALL) {
/* bdrv_drain_all() drains both src and target */
g_assert_cmpint(job->pause_count, ==, 2);
} else {
g_assert_cmpint(job->pause_count, ==, 1);
}
/* XXX We don't wait until the job is actually paused. Is this okay? */
/* g_assert_true(job->paused); */
g_assert_false(job->busy); /* The job is paused */
do_drain_end(drain_type, src);
g_assert_cmpint(job->pause_count, ==, 0);
g_assert_false(job->paused);
g_assert_false(job->busy); /* We're in block_job_sleep_ns() */
do_drain_begin(drain_type, target);
if (drain_type == BDRV_DRAIN_ALL) {
/* bdrv_drain_all() drains both src and target */
g_assert_cmpint(job->pause_count, ==, 2);
} else {
g_assert_cmpint(job->pause_count, ==, 1);
}
/* XXX We don't wait until the job is actually paused. Is this okay? */
/* g_assert_true(job->paused); */
g_assert_false(job->busy); /* The job is paused */
do_drain_end(drain_type, target);
g_assert_cmpint(job->pause_count, ==, 0);
g_assert_false(job->paused);
g_assert_false(job->busy); /* We're in block_job_sleep_ns() */
ret = block_job_complete_sync(job, &error_abort);
g_assert_cmpint(ret, ==, 0);
blk_unref(blk_src);
blk_unref(blk_target);
bdrv_unref(src);
bdrv_unref(target);
}
static void test_blockjob_drain_all(void)
{
test_blockjob_common(BDRV_DRAIN_ALL);
}
static void test_blockjob_drain(void)
{
test_blockjob_common(BDRV_DRAIN);
}
static void test_blockjob_drain_subtree(void)
{
test_blockjob_common(BDRV_SUBTREE_DRAIN);
}
int main(int argc, char **argv)
{
bdrv_init();
qemu_init_main_loop(&error_abort);
g_test_init(&argc, &argv, NULL);
g_test_add_func("/bdrv-drain/driver-cb/drain_all", test_drv_cb_drain_all);
g_test_add_func("/bdrv-drain/driver-cb/drain", test_drv_cb_drain);
g_test_add_func("/bdrv-drain/driver-cb/drain_subtree",
test_drv_cb_drain_subtree);
// XXX bdrv_drain_all() doesn't work in coroutine context
g_test_add_func("/bdrv-drain/driver-cb/co/drain", test_drv_cb_co_drain);
g_test_add_func("/bdrv-drain/driver-cb/co/drain_subtree",
test_drv_cb_co_drain_subtree);
g_test_add_func("/bdrv-drain/quiesce/drain_all", test_quiesce_drain_all);
g_test_add_func("/bdrv-drain/quiesce/drain", test_quiesce_drain);
g_test_add_func("/bdrv-drain/quiesce/drain_subtree",
test_quiesce_drain_subtree);
// XXX bdrv_drain_all() doesn't work in coroutine context
g_test_add_func("/bdrv-drain/quiesce/co/drain", test_quiesce_co_drain);
g_test_add_func("/bdrv-drain/quiesce/co/drain_subtree",
test_quiesce_co_drain_subtree);
g_test_add_func("/bdrv-drain/nested", test_nested);
g_test_add_func("/bdrv-drain/multiparent", test_multiparent);
g_test_add_func("/bdrv-drain/graph-change", test_graph_change);
g_test_add_func("/bdrv-drain/blockjob/drain_all", test_blockjob_drain_all);
g_test_add_func("/bdrv-drain/blockjob/drain", test_blockjob_drain);
g_test_add_func("/bdrv-drain/blockjob/drain_subtree",
test_blockjob_drain_subtree);
return g_test_run();
}
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