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test-block-iothread: Test AioContext propagation through the tree 

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2019-05-06 19:18:00 +02:00
parent 53a7d04185
commit 7e2f096a82
1 changed files with 131 additions and 0 deletions
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131
tests/test-block-iothread.c
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@ -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();
}