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test-bdrv-drain: Test bs->quiesce_counter 

This is currently only working correctly for bdrv_drain(), not for
bdrv_drain_all(). Leave a comment for the drain_all case, we'll address
it later.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
master
Kevin Wolf 2017-12-07 17:00:22 +01:00
parent 86e1c840ec
commit 89a6ceab46
1 changed files with 45 additions and 0 deletions
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45
tests/test-bdrv-drain.c
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@ -178,6 +178,48 @@ static void test_drv_cb_drain(void)
test_drv_cb_common(BDRV_DRAIN, false);
}
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);
}
int main(int argc, char **argv)
{
bdrv_init();
@ -188,5 +230,8 @@ int main(int argc, char **argv)
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/quiesce/drain_all", test_quiesce_drain_all);
g_test_add_func("/bdrv-drain/quiesce/drain", test_quiesce_drain);
return g_test_run();
}