*/
#include "qemu/osdep.h"
-#include "block/block.h"
+#include "block/block_int.h"
#include "block/blockjob_int.h"
#include "sysemu/block-backend.h"
#include "qapi/error.h"
bdrv_dec_in_flight(bs);
}
-static void coroutine_fn bdrv_test_co_drain_begin(BlockDriverState *bs)
+static void bdrv_test_drain_begin(BlockDriverState *bs)
{
BDRVTestState *s = bs->opaque;
s->drain_count++;
}
}
-static void coroutine_fn bdrv_test_co_drain_end(BlockDriverState *bs)
+static void bdrv_test_drain_end(BlockDriverState *bs)
{
BDRVTestState *s = bs->opaque;
s->drain_count--;
return 0;
}
-static int bdrv_test_change_backing_file(BlockDriverState *bs,
- const char *backing_file,
- const char *backing_fmt)
+static int bdrv_test_co_change_backing_file(BlockDriverState *bs,
+ const char *backing_file,
+ const char *backing_fmt)
{
return 0;
}
.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_drain_begin = bdrv_test_drain_begin,
+ .bdrv_drain_end = bdrv_test_drain_end,
.bdrv_child_perm = bdrv_default_perms,
- .bdrv_change_backing_file = bdrv_test_change_backing_file,
+ .bdrv_co_change_backing_file = bdrv_test_co_change_backing_file,
};
static void aio_ret_cb(void *opaque, int ret)
enum drain_type {
BDRV_DRAIN_ALL,
BDRV_DRAIN,
- BDRV_SUBTREE_DRAIN,
DRAIN_TYPE_MAX,
};
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();
}
}
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 BlockBackend * no_coroutine_fn test_setup(void)
+{
+ BlockBackend *blk;
+ BlockDriverState *bs, *backing;
+
+ blk = blk_new(qemu_get_aio_context(), 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);
+
+ bdrv_unref(backing);
+ bdrv_unref(bs);
+
+ return blk;
+}
+
static void do_drain_end_unlocked(enum drain_type drain_type, BlockDriverState *bs)
{
if (drain_type != BDRV_DRAIN_ALL) {
}
}
-static void test_drv_cb_common(enum drain_type drain_type, bool recursive)
+/*
+ * Locking the block graph would be a bit cumbersome here because this function
+ * is called both in coroutine and non-coroutine context. We know this is a test
+ * and nothing else is running, so don't bother with TSA.
+ */
+static void coroutine_mixed_fn TSA_NO_TSA
+test_drv_cb_common(BlockBackend *blk, enum drain_type drain_type,
+ bool recursive)
{
- BlockBackend *blk;
- BlockDriverState *bs, *backing;
+ BlockDriverState *bs = blk_bs(blk);
+ BlockDriverState *backing = bs->backing->bs;
BDRVTestState *s, *backing_s;
BlockAIOCB *acb;
int aio_ret;
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, NULL, 0);
- blk = blk_new(qemu_get_aio_context(), 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(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);
+ BlockBackend *blk = test_setup();
+ test_drv_cb_common(blk, BDRV_DRAIN_ALL, true);
+ blk_unref(blk);
}
static void test_drv_cb_drain(void)
{
- test_drv_cb_common(BDRV_DRAIN, false);
+ BlockBackend *blk = test_setup();
+ test_drv_cb_common(blk, BDRV_DRAIN, false);
+ blk_unref(blk);
}
-static void test_drv_cb_drain_subtree(void)
+static void coroutine_fn test_drv_cb_co_drain_all_entry(void)
{
- test_drv_cb_common(BDRV_SUBTREE_DRAIN, true);
+ BlockBackend *blk = blk_all_next(NULL);
+ test_drv_cb_common(blk, BDRV_DRAIN_ALL, true);
}
static void test_drv_cb_co_drain_all(void)
{
- call_in_coroutine(test_drv_cb_drain_all);
+ BlockBackend *blk = test_setup();
+ call_in_coroutine(test_drv_cb_co_drain_all_entry);
+ blk_unref(blk);
}
-static void test_drv_cb_co_drain(void)
+static void coroutine_fn test_drv_cb_co_drain_entry(void)
{
- call_in_coroutine(test_drv_cb_drain);
+ BlockBackend *blk = blk_all_next(NULL);
+ test_drv_cb_common(blk, BDRV_DRAIN, false);
}
-static void test_drv_cb_co_drain_subtree(void)
+static void test_drv_cb_co_drain(void)
{
- call_in_coroutine(test_drv_cb_drain_subtree);
+ BlockBackend *blk = test_setup();
+ call_in_coroutine(test_drv_cb_co_drain_entry);
+ blk_unref(blk);
}
-static void test_quiesce_common(enum drain_type drain_type, bool recursive)
+/*
+ * Locking the block graph would be a bit cumbersome here because this function
+ * is called both in coroutine and non-coroutine context. We know this is a test
+ * and nothing else is running, so don't bother with TSA.
+ */
+static void coroutine_mixed_fn TSA_NO_TSA
+test_quiesce_common(BlockBackend *blk, enum drain_type drain_type,
+ bool recursive)
{
- BlockBackend *blk;
- BlockDriverState *bs, *backing;
-
- blk = blk_new(qemu_get_aio_context(), 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);
+ BlockDriverState *bs = blk_bs(blk);
+ BlockDriverState *backing = bs->backing->bs;
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);
+ if (drain_type == BDRV_DRAIN_ALL) {
+ g_assert_cmpint(bs->quiesce_counter, ==, 2);
+ } else {
+ 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)
{
- test_quiesce_common(BDRV_DRAIN_ALL, true);
+ BlockBackend *blk = test_setup();
+ test_quiesce_common(blk, BDRV_DRAIN_ALL, true);
+ blk_unref(blk);
}
static void test_quiesce_drain(void)
{
- test_quiesce_common(BDRV_DRAIN, false);
+ BlockBackend *blk = test_setup();
+ test_quiesce_common(blk, BDRV_DRAIN, false);
+ blk_unref(blk);
}
-static void test_quiesce_drain_subtree(void)
+static void coroutine_fn test_quiesce_co_drain_all_entry(void)
{
- test_quiesce_common(BDRV_SUBTREE_DRAIN, true);
+ BlockBackend *blk = blk_all_next(NULL);
+ test_quiesce_common(blk, BDRV_DRAIN_ALL, true);
}
static void test_quiesce_co_drain_all(void)
{
- call_in_coroutine(test_quiesce_drain_all);
+ BlockBackend *blk = test_setup();
+ call_in_coroutine(test_quiesce_co_drain_all_entry);
+ blk_unref(blk);
}
-static void test_quiesce_co_drain(void)
+static void coroutine_fn test_quiesce_co_drain_entry(void)
{
- call_in_coroutine(test_quiesce_drain);
+ BlockBackend *blk = blk_all_next(NULL);
+ test_quiesce_common(blk, BDRV_DRAIN, false);
}
-static void test_quiesce_co_drain_subtree(void)
+static void test_quiesce_co_drain(void)
{
- call_in_coroutine(test_quiesce_drain_subtree);
+ BlockBackend *blk = test_setup();
+ call_in_coroutine(test_quiesce_co_drain_entry);
+ blk_unref(blk);
}
static void test_nested(void)
for (outer = 0; outer < DRAIN_TYPE_MAX; outer++) {
for (inner = 0; inner < DRAIN_TYPE_MAX; inner++) {
- int backing_quiesce = (outer != BDRV_DRAIN) +
- (inner != BDRV_DRAIN);
+ int backing_quiesce = (outer == BDRV_DRAIN_ALL) +
+ (inner == BDRV_DRAIN_ALL);
g_assert_cmpint(bs->quiesce_counter, ==, 0);
g_assert_cmpint(backing->quiesce_counter, ==, 0);
do_drain_begin(outer, bs);
do_drain_begin(inner, bs);
- g_assert_cmpint(bs->quiesce_counter, ==, 2);
+ g_assert_cmpint(bs->quiesce_counter, ==, 2 + !!backing_quiesce);
g_assert_cmpint(backing->quiesce_counter, ==, backing_quiesce);
- g_assert_cmpint(s->drain_count, ==, 2);
- g_assert_cmpint(backing_s->drain_count, ==, backing_quiesce);
+ g_assert_cmpint(s->drain_count, ==, 1);
+ g_assert_cmpint(backing_s->drain_count, ==, !!backing_quiesce);
do_drain_end(inner, bs);
do_drain_end(outer, 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(qemu_get_aio_context(), 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(qemu_get_aio_context(), 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_drain_subtree(void)
-{
- BlockBackend *blk_a, *blk_b;
- BlockDriverState *bs_a, *bs_b, *backing;
- BDRVTestState *a_s, *b_s, *backing_s;
-
- blk_a = blk_new(qemu_get_aio_context(), 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(qemu_get_aio_context(), 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);
-}
-
static void test_graph_change_drain_all(void)
{
BlockBackend *blk_a, *blk_b;
g_assert_cmpint(bs_b->quiesce_counter, ==, 0);
g_assert_cmpint(b_s->drain_count, ==, 0);
- g_assert_cmpint(qemu_get_aio_context()->external_disable_cnt, ==, 0);
bdrv_unref(bs_b);
blk_unref(blk_b);
BlockDriverState *bs;
enum drain_type drain_type;
int *aio_ret;
+ bool co_done;
};
-static void test_iothread_drain_entry(void *opaque)
+static void coroutine_fn test_iothread_drain_co_entry(void *opaque)
{
struct test_iothread_data *data = opaque;
- aio_context_acquire(bdrv_get_aio_context(data->bs));
do_drain_begin(data->drain_type, data->bs);
g_assert_cmpint(*data->aio_ret, ==, 0);
do_drain_end(data->drain_type, data->bs);
- aio_context_release(bdrv_get_aio_context(data->bs));
- qemu_event_set(&done_event);
+ data->co_done = true;
+ aio_wait_kick();
}
static void test_iothread_aio_cb(void *opaque, int ret)
* executed during drain, otherwise this would deadlock. */
aio_context_acquire(bdrv_get_aio_context(data->bs));
bdrv_flush(data->bs);
+ bdrv_dec_in_flight(data->bs); /* incremented by test_iothread_common() */
aio_context_release(bdrv_get_aio_context(data->bs));
}
BlockDriverState *bs;
BDRVTestState *s;
BlockAIOCB *acb;
+ Coroutine *co;
int aio_ret;
struct test_iothread_data data;
aio_context_acquire(ctx_a);
}
+ /*
+ * Increment in_flight so that do_drain_begin() waits for
+ * test_iothread_main_thread_bh(). This prevents the race between
+ * test_iothread_main_thread_bh() in IOThread a and do_drain_begin() in
+ * this thread. test_iothread_main_thread_bh() decrements in_flight.
+ */
+ bdrv_inc_in_flight(bs);
aio_bh_schedule_oneshot(ctx_a, test_iothread_main_thread_bh, &data);
/* The request is running on the IOThread a. Draining its block device
}
break;
case 1:
- aio_bh_schedule_oneshot(ctx_a, test_iothread_drain_entry, &data);
- qemu_event_wait(&done_event);
+ co = qemu_coroutine_create(test_iothread_drain_co_entry, &data);
+ aio_co_enter(ctx_a, co);
+ AIO_WAIT_WHILE_UNLOCKED(NULL, !data.co_done);
break;
default:
g_assert_not_reached();
test_iothread_common(BDRV_DRAIN, 1);
}
-static void test_iothread_drain_subtree(void)
-{
- test_iothread_common(BDRV_SUBTREE_DRAIN, 0);
- test_iothread_common(BDRV_SUBTREE_DRAIN, 1);
-}
-
typedef struct TestBlockJob {
BlockJob common;
enum test_job_drain_node {
TEST_JOB_DRAIN_SRC,
TEST_JOB_DRAIN_SRC_CHILD,
- TEST_JOB_DRAIN_SRC_PARENT,
};
static void test_blockjob_common_drain_node(enum drain_type drain_type,
case TEST_JOB_DRAIN_SRC_CHILD:
drain_bs = src_backing;
break;
- case TEST_JOB_DRAIN_SRC_PARENT:
- drain_bs = src_overlay;
- break;
default:
g_assert_not_reached();
}
0, 0, NULL, NULL, &error_abort);
tjob->bs = src;
job = &tjob->common;
+
+ bdrv_graph_wrlock(target);
block_job_add_bdrv(job, "target", target, 0, BLK_PERM_ALL, &error_abort);
+ bdrv_graph_wrunlock(target);
switch (result) {
case TEST_JOB_SUCCESS:
TEST_JOB_DRAIN_SRC);
test_blockjob_common_drain_node(drain_type, use_iothread, result,
TEST_JOB_DRAIN_SRC_CHILD);
- if (drain_type == BDRV_SUBTREE_DRAIN) {
- test_blockjob_common_drain_node(drain_type, use_iothread, result,
- TEST_JOB_DRAIN_SRC_PARENT);
- }
}
static void test_blockjob_drain_all(void)
test_blockjob_common(BDRV_DRAIN, false, TEST_JOB_SUCCESS);
}
-static void test_blockjob_drain_subtree(void)
-{
- test_blockjob_common(BDRV_SUBTREE_DRAIN, false, TEST_JOB_SUCCESS);
-}
-
static void test_blockjob_error_drain_all(void)
{
test_blockjob_common(BDRV_DRAIN_ALL, false, TEST_JOB_FAIL_RUN);
test_blockjob_common(BDRV_DRAIN, false, TEST_JOB_FAIL_PREPARE);
}
-static void test_blockjob_error_drain_subtree(void)
-{
- test_blockjob_common(BDRV_SUBTREE_DRAIN, false, TEST_JOB_FAIL_RUN);
- test_blockjob_common(BDRV_SUBTREE_DRAIN, false, TEST_JOB_FAIL_PREPARE);
-}
-
static void test_blockjob_iothread_drain_all(void)
{
test_blockjob_common(BDRV_DRAIN_ALL, true, TEST_JOB_SUCCESS);
test_blockjob_common(BDRV_DRAIN, true, TEST_JOB_SUCCESS);
}
-static void test_blockjob_iothread_drain_subtree(void)
-{
- test_blockjob_common(BDRV_SUBTREE_DRAIN, true, TEST_JOB_SUCCESS);
-}
-
static void test_blockjob_iothread_error_drain_all(void)
{
test_blockjob_common(BDRV_DRAIN_ALL, true, TEST_JOB_FAIL_RUN);
test_blockjob_common(BDRV_DRAIN, true, TEST_JOB_FAIL_PREPARE);
}
-static void test_blockjob_iothread_error_drain_subtree(void)
-{
- test_blockjob_common(BDRV_SUBTREE_DRAIN, true, TEST_JOB_FAIL_RUN);
- test_blockjob_common(BDRV_SUBTREE_DRAIN, true, TEST_JOB_FAIL_PREPARE);
-}
-
typedef struct BDRVTestTopState {
BdrvChild *wait_child;
static void bdrv_test_top_close(BlockDriverState *bs)
{
BdrvChild *c, *next_c;
+
+ bdrv_graph_wrlock(NULL);
QLIST_FOREACH_SAFE(c, &bs->children, next, next_c) {
bdrv_unref_child(bs, c);
}
+ bdrv_graph_wrunlock(NULL);
}
-static int coroutine_fn bdrv_test_top_co_preadv(BlockDriverState *bs,
- int64_t offset, int64_t bytes,
- QEMUIOVector *qiov,
- BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+bdrv_test_top_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
+ QEMUIOVector *qiov, BdrvRequestFlags flags)
{
BDRVTestTopState *tts = bs->opaque;
return bdrv_co_preadv(tts->wait_child, offset, bytes, qiov, flags);
* everything will be drained before we go back down the tree, but
* we do not want that. We want to be in the middle of draining
* when this following requests returns. */
+ bdrv_graph_co_rdlock();
bdrv_co_preadv(tts->wait_child, 0, 65536, &qiov, 0);
+ bdrv_graph_co_rdunlock();
g_assert_cmpint(bs->refcnt, ==, 1);
if (!dbdd->detach_instead_of_delete) {
- blk_unref(blk);
+ blk_co_unref(blk);
} else {
BdrvChild *c, *next_c;
+ bdrv_graph_co_rdlock();
QLIST_FOREACH_SAFE(c, &bs->children, next, next_c) {
- bdrv_unref_child(bs, c);
+ bdrv_graph_co_rdunlock();
+ bdrv_co_unref_child(bs, c);
+ bdrv_graph_co_rdlock();
}
+ bdrv_graph_co_rdunlock();
}
dbdd->done = true;
null_bs = bdrv_open("null-co://", NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
&error_abort);
+ bdrv_graph_wrlock(NULL);
bdrv_attach_child(bs, null_bs, "null-child", &child_of_bds,
BDRV_CHILD_DATA, &error_abort);
+ bdrv_graph_wrunlock(NULL);
/* This child will be the one to pass to requests through to, and
* it will stall until a drain occurs */
&error_abort);
child_bs->total_sectors = 65536 >> BDRV_SECTOR_BITS;
/* Takes our reference to child_bs */
+ bdrv_graph_wrlock(NULL);
tts->wait_child = bdrv_attach_child(bs, child_bs, "wait-child",
&child_of_bds,
BDRV_CHILD_DATA | BDRV_CHILD_PRIMARY,
&error_abort);
+ bdrv_graph_wrunlock(NULL);
/* This child is just there to be deleted
* (for detach_instead_of_delete == true) */
null_bs = bdrv_open("null-co://", NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
&error_abort);
+ bdrv_graph_wrlock(NULL);
bdrv_attach_child(bs, null_bs, "null-child", &child_of_bds, BDRV_CHILD_DATA,
&error_abort);
+ bdrv_graph_wrunlock(NULL);
blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL);
blk_insert_bs(blk, bs, &error_abort);
bdrv_drain(child_bs);
bdrv_unref(child_bs);
break;
- case BDRV_SUBTREE_DRAIN:
- /* Would have to ref/unref bs here for !detach_instead_of_delete, but
- * then the whole test becomes pointless because the graph changes
- * don't occur during the drain any more. */
- assert(detach_instead_of_delete);
- bdrv_subtree_drained_begin(bs);
- bdrv_subtree_drained_end(bs);
- break;
case BDRV_DRAIN_ALL:
bdrv_drain_all_begin();
bdrv_drain_all_end();
do_test_delete_by_drain(true, BDRV_DRAIN);
}
-static void test_detach_by_drain_subtree(void)
-{
- do_test_delete_by_drain(true, BDRV_SUBTREE_DRAIN);
-}
-
struct detach_by_parent_data {
BlockDriverState *parent_b;
BlockDriverState *c;
BdrvChild *child_c;
bool by_parent_cb;
+ bool detach_on_drain;
};
static struct detach_by_parent_data detach_by_parent_data;
-static void detach_indirect_bh(void *opaque)
+static void no_coroutine_fn detach_indirect_bh(void *opaque)
{
struct detach_by_parent_data *data = opaque;
+ bdrv_dec_in_flight(data->child_b->bs);
+
+ bdrv_graph_wrlock(NULL);
bdrv_unref_child(data->parent_b, data->child_b);
bdrv_ref(data->c);
data->child_c = bdrv_attach_child(data->parent_b, data->c, "PB-C",
&child_of_bds, BDRV_CHILD_DATA,
&error_abort);
+ bdrv_graph_wrunlock(NULL);
}
-static void detach_by_parent_aio_cb(void *opaque, int ret)
+static void coroutine_mixed_fn detach_by_parent_aio_cb(void *opaque, int ret)
{
struct detach_by_parent_data *data = &detach_by_parent_data;
g_assert_cmpint(ret, ==, 0);
if (data->by_parent_cb) {
- detach_indirect_bh(data);
+ bdrv_inc_in_flight(data->child_b->bs);
+ aio_bh_schedule_oneshot(qemu_get_current_aio_context(),
+ detach_indirect_bh, &detach_by_parent_data);
}
}
-static void detach_by_driver_cb_drained_begin(BdrvChild *child)
+static void GRAPH_RDLOCK detach_by_driver_cb_drained_begin(BdrvChild *child)
{
+ struct detach_by_parent_data *data = &detach_by_parent_data;
+
+ if (!data->detach_on_drain) {
+ return;
+ }
+ data->detach_on_drain = false;
+
+ bdrv_inc_in_flight(data->child_b->bs);
aio_bh_schedule_oneshot(qemu_get_current_aio_context(),
detach_indirect_bh, &detach_by_parent_data);
child_of_bds.drained_begin(child);
* state is messed up, but if it is only polled in the single
* BDRV_POLL_WHILE() at the end of the drain, this should work fine.
*/
-static void test_detach_indirect(bool by_parent_cb)
+static void TSA_NO_TSA test_detach_indirect(bool by_parent_cb)
{
BlockBackend *blk;
BlockDriverState *parent_a, *parent_b, *a, *b, *c;
detach_by_driver_cb_class = child_of_bds;
detach_by_driver_cb_class.drained_begin =
detach_by_driver_cb_drained_begin;
+ detach_by_driver_cb_class.drained_end = NULL;
+ detach_by_driver_cb_class.drained_poll = NULL;
}
+ detach_by_parent_data = (struct detach_by_parent_data) {
+ .detach_on_drain = false,
+ };
+
/* Create all involved nodes */
parent_a = bdrv_new_open_driver(&bdrv_test, "parent-a", BDRV_O_RDWR,
&error_abort);
/* Set child relationships */
bdrv_ref(b);
bdrv_ref(a);
+ bdrv_graph_wrlock(NULL);
child_b = bdrv_attach_child(parent_b, b, "PB-B", &child_of_bds,
BDRV_CHILD_DATA, &error_abort);
child_a = bdrv_attach_child(parent_b, a, "PB-A", &child_of_bds,
bdrv_attach_child(parent_a, a, "PA-A",
by_parent_cb ? &child_of_bds : &detach_by_driver_cb_class,
BDRV_CHILD_DATA, &error_abort);
+ bdrv_graph_wrunlock(NULL);
g_assert_cmpint(parent_a->refcnt, ==, 1);
g_assert_cmpint(parent_b->refcnt, ==, 1);
.child_b = child_b,
.c = c,
.by_parent_cb = by_parent_cb,
+ .detach_on_drain = true,
};
acb = blk_aio_preadv(blk, 0, &qiov, 0, detach_by_parent_aio_cb, NULL);
g_assert(acb != NULL);
/* Drain and check the expected result */
- bdrv_subtree_drained_begin(parent_b);
+ bdrv_drained_begin(parent_b);
+ bdrv_drained_begin(a);
+ bdrv_drained_begin(b);
+ bdrv_drained_begin(c);
g_assert(detach_by_parent_data.child_c != NULL);
g_assert(QLIST_NEXT(child_a, next) == NULL);
g_assert_cmpint(parent_a->quiesce_counter, ==, 1);
- g_assert_cmpint(parent_b->quiesce_counter, ==, 1);
+ g_assert_cmpint(parent_b->quiesce_counter, ==, 3);
g_assert_cmpint(a->quiesce_counter, ==, 1);
- g_assert_cmpint(b->quiesce_counter, ==, 0);
+ g_assert_cmpint(b->quiesce_counter, ==, 1);
g_assert_cmpint(c->quiesce_counter, ==, 1);
- bdrv_subtree_drained_end(parent_b);
+ bdrv_drained_end(parent_b);
+ bdrv_drained_end(a);
+ bdrv_drained_end(b);
+ bdrv_drained_end(c);
bdrv_unref(parent_b);
blk_unref(blk);
g_assert_cmpint(base_s->drain_count, ==, 1);
g_assert_cmpint(base->in_flight, ==, 0);
+ aio_context_acquire(qemu_get_aio_context());
bdrv_append(overlay, base, &error_abort);
+ aio_context_release(qemu_get_aio_context());
+
g_assert_cmpint(base->in_flight, ==, 0);
g_assert_cmpint(overlay->in_flight, ==, 0);
bdrv_drained_begin(bs_child);
g_assert(!job_has_completed);
bdrv_drained_end(bs_child);
+ aio_poll(qemu_get_aio_context(), false);
g_assert(job_has_completed);
bdrv_unref(bs_parents[0]);
* Establish the chain last, so the chain links are the first
* elements in the BDS.parents lists
*/
+ bdrv_graph_wrlock(NULL);
for (i = 0; i < 3; i++) {
if (i) {
/* Takes the reference to chain[i - 1] */
&chain_child_class, BDRV_CHILD_COW, &error_abort);
}
}
+ bdrv_graph_wrunlock(NULL);
job = block_job_create("job", &test_simple_job_driver, NULL, job_node,
0, BLK_PERM_ALL, 0, 0, NULL, NULL, &error_abort);
g_assert(!job_has_completed);
ret = bdrv_drop_intermediate(chain[1], chain[0], NULL);
+ aio_poll(qemu_get_aio_context(), false);
g_assert(ret == 0);
g_assert(job_has_completed);
typedef struct BDRVReplaceTestState {
+ bool setup_completed;
bool was_drained;
bool was_undrained;
bool has_read;
* Otherwise:
* Set .has_read to true and return success.
*/
-static int coroutine_fn bdrv_replace_test_co_preadv(BlockDriverState *bs,
- int64_t offset,
- int64_t bytes,
- QEMUIOVector *qiov,
- BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+bdrv_replace_test_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
+ QEMUIOVector *qiov, BdrvRequestFlags flags)
{
BDRVReplaceTestState *s = bs->opaque;
* .was_drained.
* Increment .drain_count.
*/
-static void coroutine_fn bdrv_replace_test_co_drain_begin(BlockDriverState *bs)
+static void bdrv_replace_test_drain_begin(BlockDriverState *bs)
{
BDRVReplaceTestState *s = bs->opaque;
+ if (!s->setup_completed) {
+ return;
+ }
+
if (!s->drain_count) {
s->drain_co = qemu_coroutine_create(bdrv_replace_test_drain_co, bs);
bdrv_inc_in_flight(bs);
int ret;
/* Queue a read request post-drain */
+ bdrv_graph_co_rdlock();
ret = bdrv_replace_test_co_preadv(bs, 0, 1, &qiov, 0);
+ bdrv_graph_co_rdunlock();
+
g_assert(ret >= 0);
bdrv_dec_in_flight(bs);
}
* If .drain_count reaches 0 and the node has a backing file, issue a
* read request.
*/
-static void coroutine_fn bdrv_replace_test_co_drain_end(BlockDriverState *bs)
+static void bdrv_replace_test_drain_end(BlockDriverState *bs)
{
BDRVReplaceTestState *s = bs->opaque;
+ GRAPH_RDLOCK_GUARD_MAINLOOP();
+
+ if (!s->setup_completed) {
+ return;
+ }
+
g_assert(s->drain_count > 0);
if (!--s->drain_count) {
s->was_undrained = true;
.bdrv_close = bdrv_replace_test_close,
.bdrv_co_preadv = bdrv_replace_test_co_preadv,
- .bdrv_co_drain_begin = bdrv_replace_test_co_drain_begin,
- .bdrv_co_drain_end = bdrv_replace_test_co_drain_end,
+ .bdrv_drain_begin = bdrv_replace_test_drain_begin,
+ .bdrv_drain_end = bdrv_replace_test_drain_end,
.bdrv_child_perm = bdrv_default_perms,
};
new_child_bs->total_sectors = 1;
bdrv_ref(old_child_bs);
+ bdrv_graph_wrlock(NULL);
bdrv_attach_child(parent_bs, old_child_bs, "child", &child_of_bds,
BDRV_CHILD_COW, &error_abort);
+ bdrv_graph_wrunlock(NULL);
+ parent_s->setup_completed = true;
for (i = 0; i < old_drain_count; i++) {
bdrv_drained_begin(old_child_bs);
parent_s->was_undrained = false;
g_assert(parent_bs->quiesce_counter == old_drain_count);
+ bdrv_drained_begin(old_child_bs);
+ bdrv_drained_begin(new_child_bs);
+ bdrv_graph_wrlock(NULL);
bdrv_replace_node(old_child_bs, new_child_bs, &error_abort);
+ bdrv_graph_wrunlock(NULL);
+ bdrv_drained_end(new_child_bs);
+ bdrv_drained_end(old_child_bs);
g_assert(parent_bs->quiesce_counter == new_drain_count);
if (!old_drain_count && !new_drain_count) {
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);
g_test_add_func("/bdrv-drain/driver-cb/co/drain_all",
test_drv_cb_co_drain_all);
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);
g_test_add_func("/bdrv-drain/quiesce/co/drain_all",
test_quiesce_co_drain_all);
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/drain_subtree",
- test_graph_change_drain_subtree);
g_test_add_func("/bdrv-drain/graph-change/drain_all",
test_graph_change_drain_all);
g_test_add_func("/bdrv-drain/iothread/drain_all", test_iothread_drain_all);
g_test_add_func("/bdrv-drain/iothread/drain", test_iothread_drain);
- g_test_add_func("/bdrv-drain/iothread/drain_subtree",
- test_iothread_drain_subtree);
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);
g_test_add_func("/bdrv-drain/blockjob/error/drain_all",
test_blockjob_error_drain_all);
g_test_add_func("/bdrv-drain/blockjob/error/drain",
test_blockjob_error_drain);
- g_test_add_func("/bdrv-drain/blockjob/error/drain_subtree",
- test_blockjob_error_drain_subtree);
g_test_add_func("/bdrv-drain/blockjob/iothread/drain_all",
test_blockjob_iothread_drain_all);
g_test_add_func("/bdrv-drain/blockjob/iothread/drain",
test_blockjob_iothread_drain);
- g_test_add_func("/bdrv-drain/blockjob/iothread/drain_subtree",
- test_blockjob_iothread_drain_subtree);
g_test_add_func("/bdrv-drain/blockjob/iothread/error/drain_all",
test_blockjob_iothread_error_drain_all);
g_test_add_func("/bdrv-drain/blockjob/iothread/error/drain",
test_blockjob_iothread_error_drain);
- g_test_add_func("/bdrv-drain/blockjob/iothread/error/drain_subtree",
- test_blockjob_iothread_error_drain_subtree);
g_test_add_func("/bdrv-drain/deletion/drain", test_delete_by_drain);
g_test_add_func("/bdrv-drain/detach/drain_all", test_detach_by_drain_all);
g_test_add_func("/bdrv-drain/detach/drain", test_detach_by_drain);
- g_test_add_func("/bdrv-drain/detach/drain_subtree", test_detach_by_drain_subtree);
g_test_add_func("/bdrv-drain/detach/parent_cb", test_detach_by_parent_cb);
g_test_add_func("/bdrv-drain/detach/driver_cb", test_detach_by_driver_cb);
projects / mirror_qemu.git / blobdiff