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Mon, 20 May 2019 16:15:25 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-117-208.ams2.redhat.com [10.36.117.208]) by smtp.corp.redhat.com (Postfix) with ESMTP id 57325D1E4; Mon, 20 May 2019 16:15:23 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Mon, 20 May 2019 18:14:40 +0200 Message-Id: <20190520161453.30723-12-kwolf@redhat.com> In-Reply-To: <20190520161453.30723-1-kwolf@redhat.com> References: <20190520161453.30723-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Mon, 20 May 2019 16:15:34 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 11/24] test-block-iothread: Test AioContext propagation through the tree X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Kevin Wolf --- tests/test-block-iothread.c | 131 ++++++++++++++++++++++++++++++++++++ 1 file changed, 131 insertions(+) diff --git a/tests/test-block-iothread.c b/tests/test-block-iothread.c index 036ed9a3b3..938831c9bd 100644 --- a/tests/test-block-iothread.c +++ b/tests/test-block-iothread.c @@ -27,6 +27,7 @@ #include "block/blockjob_int.h" #include "sysemu/block-backend.h" #include "qapi/error.h" +#include "qapi/qmp/qdict.h" #include "iothread.h" static int coroutine_fn bdrv_test_co_prwv(BlockDriverState *bs, @@ -459,6 +460,134 @@ static void test_attach_blockjob(void) blk_unref(blk); } +/* + * Test that changing the AioContext for one node in a tree (here through blk) + * changes all other nodes as well: + * + * blk + * | + * | bs_verify [blkverify] + * | / \ + * | / \ + * bs_a [bdrv_test] bs_b [bdrv_test] + * + */ +static void test_propagate_basic(void) +{ + IOThread *iothread = iothread_new(); + AioContext *ctx = iothread_get_aio_context(iothread); + BlockBackend *blk; + BlockDriverState *bs_a, *bs_b, *bs_verify; + QDict *options; + + /* Create bs_a and its BlockBackend */ + blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL); + bs_a = bdrv_new_open_driver(&bdrv_test, "bs_a", BDRV_O_RDWR, &error_abort); + blk_insert_bs(blk, bs_a, &error_abort); + + /* Create bs_b */ + bs_b = bdrv_new_open_driver(&bdrv_test, "bs_b", BDRV_O_RDWR, &error_abort); + + /* Create blkverify filter that references both bs_a and bs_b */ + options = qdict_new(); + qdict_put_str(options, "driver", "blkverify"); + qdict_put_str(options, "test", "bs_a"); + qdict_put_str(options, "raw", "bs_b"); + + bs_verify = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); + + /* Switch the AioContext */ + blk_set_aio_context(blk, ctx); + g_assert(blk_get_aio_context(blk) == ctx); + g_assert(bdrv_get_aio_context(bs_a) == ctx); + g_assert(bdrv_get_aio_context(bs_verify) == ctx); + g_assert(bdrv_get_aio_context(bs_b) == ctx); + + /* Switch the AioContext back */ + ctx = qemu_get_aio_context(); + blk_set_aio_context(blk, ctx); + g_assert(blk_get_aio_context(blk) == ctx); + g_assert(bdrv_get_aio_context(bs_a) == ctx); + g_assert(bdrv_get_aio_context(bs_verify) == ctx); + g_assert(bdrv_get_aio_context(bs_b) == ctx); + + bdrv_unref(bs_verify); + bdrv_unref(bs_b); + bdrv_unref(bs_a); + blk_unref(blk); +} + +/* + * Test that diamonds in the graph don't lead to endless recursion: + * + * blk + * | + * bs_verify [blkverify] + * / \ + * / \ + * bs_b [raw] bs_c[raw] + * \ / + * \ / + * bs_a [bdrv_test] + */ +static void test_propagate_diamond(void) +{ + IOThread *iothread = iothread_new(); + AioContext *ctx = iothread_get_aio_context(iothread); + BlockBackend *blk; + BlockDriverState *bs_a, *bs_b, *bs_c, *bs_verify; + QDict *options; + + /* Create bs_a */ + bs_a = bdrv_new_open_driver(&bdrv_test, "bs_a", BDRV_O_RDWR, &error_abort); + + /* Create bs_b and bc_c */ + options = qdict_new(); + qdict_put_str(options, "driver", "raw"); + qdict_put_str(options, "file", "bs_a"); + qdict_put_str(options, "node-name", "bs_b"); + bs_b = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); + + options = qdict_new(); + qdict_put_str(options, "driver", "raw"); + qdict_put_str(options, "file", "bs_a"); + qdict_put_str(options, "node-name", "bs_c"); + bs_c = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); + + /* Create blkverify filter that references both bs_b and bs_c */ + options = qdict_new(); + qdict_put_str(options, "driver", "blkverify"); + qdict_put_str(options, "test", "bs_b"); + qdict_put_str(options, "raw", "bs_c"); + + bs_verify = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); + blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL); + blk_insert_bs(blk, bs_verify, &error_abort); + + /* Switch the AioContext */ + blk_set_aio_context(blk, ctx); + g_assert(blk_get_aio_context(blk) == ctx); + g_assert(bdrv_get_aio_context(bs_verify) == ctx); + g_assert(bdrv_get_aio_context(bs_a) == ctx); + g_assert(bdrv_get_aio_context(bs_b) == ctx); + g_assert(bdrv_get_aio_context(bs_c) == ctx); + + /* Switch the AioContext back */ + ctx = qemu_get_aio_context(); + blk_set_aio_context(blk, ctx); + g_assert(blk_get_aio_context(blk) == ctx); + g_assert(bdrv_get_aio_context(bs_verify) == ctx); + g_assert(bdrv_get_aio_context(bs_a) == ctx); + g_assert(bdrv_get_aio_context(bs_b) == ctx); + g_assert(bdrv_get_aio_context(bs_c) == ctx); + + blk_unref(blk); + bdrv_unref(bs_verify); + bdrv_unref(bs_c); + bdrv_unref(bs_b); + bdrv_unref(bs_a); +} + int main(int argc, char **argv) { int i; @@ -474,6 +603,8 @@ int main(int argc, char **argv) } g_test_add_func("/attach/blockjob", test_attach_blockjob); + g_test_add_func("/propagate/basic", test_propagate_basic); + g_test_add_func("/propagate/diamond", test_propagate_diamond); return g_test_run(); }