Commit 2e9cdab3 authored by Kevin Wolf's avatar Kevin Wolf
Browse files

test-block-iothread: BlockBackend AioContext across root node change 



Test that BlockBackends preserve their assigned AioContext even when the
root node goes away. Inserting a new root node will move it to the right
AioContext.

Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent 48946d7d

tests/test-block-iothread.c

+33 −0
Original line number Diff line number Diff line
@@ -695,6 +695,38 @@ static void test_attach_second_node(void) 
    blk_unref(blk);

}



static void test_attach_preserve_blk_ctx(void)

{

    IOThread *iothread = iothread_new();

    AioContext *ctx = iothread_get_aio_context(iothread);

    BlockBackend *blk;

    BlockDriverState *bs;



    blk = blk_new(ctx, BLK_PERM_ALL, BLK_PERM_ALL);

    bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort);

    bs->total_sectors = 65536 / BDRV_SECTOR_SIZE;



    /* Add node to BlockBackend that has an iothread context assigned */

    blk_insert_bs(blk, bs, &error_abort);

    g_assert(blk_get_aio_context(blk) == ctx);

    g_assert(bdrv_get_aio_context(bs) == ctx);



    /* Remove the node again */

    blk_remove_bs(blk);

    /* TODO bs should move back to main context here */

    g_assert(blk_get_aio_context(blk) == ctx);

    g_assert(bdrv_get_aio_context(bs) == ctx);



    /* Re-attach the node */

    blk_insert_bs(blk, bs, &error_abort);

    g_assert(blk_get_aio_context(blk) == ctx);

    g_assert(bdrv_get_aio_context(bs) == ctx);



    blk_set_aio_context(blk, qemu_get_aio_context(), &error_abort);

    bdrv_unref(bs);

    blk_unref(blk);

}



int main(int argc, char **argv)

{

    int i;
@@ -711,6 +743,7 @@ int main(int argc, char **argv) 


    g_test_add_func("/attach/blockjob", test_attach_blockjob);

    g_test_add_func("/attach/second_node", test_attach_second_node);

    g_test_add_func("/attach/preserve_blk_ctx", test_attach_preserve_blk_ctx);

    g_test_add_func("/propagate/basic", test_propagate_basic);

    g_test_add_func("/propagate/diamond", test_propagate_diamond);

    g_test_add_func("/propagate/mirror", test_propagate_mirror);