2017-12-05 14:05:02 +01:00
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/*
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* Block node draining tests
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*
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* Copyright (c) 2017 Kevin Wolf <kwolf@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "block/block.h"
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2017-12-12 19:10:19 +01:00
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#include "block/blockjob_int.h"
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2017-12-05 14:05:02 +01:00
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#include "sysemu/block-backend.h"
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#include "qapi/error.h"
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typedef struct BDRVTestState {
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int drain_count;
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} BDRVTestState;
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static void coroutine_fn bdrv_test_co_drain_begin(BlockDriverState *bs)
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{
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BDRVTestState *s = bs->opaque;
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s->drain_count++;
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}
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static void coroutine_fn bdrv_test_co_drain_end(BlockDriverState *bs)
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{
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BDRVTestState *s = bs->opaque;
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s->drain_count--;
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}
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static void bdrv_test_close(BlockDriverState *bs)
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{
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BDRVTestState *s = bs->opaque;
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g_assert_cmpint(s->drain_count, >, 0);
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}
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static int coroutine_fn bdrv_test_co_preadv(BlockDriverState *bs,
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uint64_t offset, uint64_t bytes,
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QEMUIOVector *qiov, int flags)
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{
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/* We want this request to stay until the polling loop in drain waits for
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* it to complete. We need to sleep a while as bdrv_drain_invoke() comes
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* first and polls its result, too, but it shouldn't accidentally complete
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* this request yet. */
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qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 100000);
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return 0;
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}
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static BlockDriver bdrv_test = {
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.format_name = "test",
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.instance_size = sizeof(BDRVTestState),
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.bdrv_close = bdrv_test_close,
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.bdrv_co_preadv = bdrv_test_co_preadv,
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.bdrv_co_drain_begin = bdrv_test_co_drain_begin,
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.bdrv_co_drain_end = bdrv_test_co_drain_end,
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2017-12-06 18:13:53 +01:00
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.bdrv_child_perm = bdrv_format_default_perms,
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2017-12-05 14:05:02 +01:00
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};
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static void aio_ret_cb(void *opaque, int ret)
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{
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int *aio_ret = opaque;
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*aio_ret = ret;
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}
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2017-12-06 18:13:53 +01:00
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enum drain_type {
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BDRV_DRAIN_ALL,
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BDRV_DRAIN,
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2017-12-06 18:13:53 +01:00
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BDRV_SUBTREE_DRAIN,
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2017-12-13 18:14:49 +01:00
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DRAIN_TYPE_MAX,
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2017-12-06 18:13:53 +01:00
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};
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static void do_drain_begin(enum drain_type drain_type, BlockDriverState *bs)
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{
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switch (drain_type) {
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case BDRV_DRAIN_ALL: bdrv_drain_all_begin(); break;
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case BDRV_DRAIN: bdrv_drained_begin(bs); break;
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2017-12-06 18:13:53 +01:00
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case BDRV_SUBTREE_DRAIN: bdrv_subtree_drained_begin(bs); break;
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2017-12-06 18:13:53 +01:00
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default: g_assert_not_reached();
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}
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}
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static void do_drain_end(enum drain_type drain_type, BlockDriverState *bs)
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{
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switch (drain_type) {
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case BDRV_DRAIN_ALL: bdrv_drain_all_end(); break;
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case BDRV_DRAIN: bdrv_drained_end(bs); break;
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2017-12-06 18:13:53 +01:00
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case BDRV_SUBTREE_DRAIN: bdrv_subtree_drained_end(bs); break;
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2017-12-06 18:13:53 +01:00
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default: g_assert_not_reached();
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}
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}
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static void test_drv_cb_common(enum drain_type drain_type, bool recursive)
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2017-12-05 14:05:02 +01:00
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{
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BlockBackend *blk;
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2017-12-06 18:13:53 +01:00
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BlockDriverState *bs, *backing;
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BDRVTestState *s, *backing_s;
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2017-12-05 14:05:02 +01:00
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BlockAIOCB *acb;
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int aio_ret;
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QEMUIOVector qiov;
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struct iovec iov = {
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.iov_base = NULL,
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.iov_len = 0,
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};
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qemu_iovec_init_external(&qiov, &iov, 1);
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blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
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bs = bdrv_new_open_driver(&bdrv_test, "test-node", BDRV_O_RDWR,
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&error_abort);
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s = bs->opaque;
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blk_insert_bs(blk, bs, &error_abort);
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2017-12-06 18:13:53 +01:00
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backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
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backing_s = backing->opaque;
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bdrv_set_backing_hd(bs, backing, &error_abort);
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2017-12-05 14:05:02 +01:00
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/* Simple bdrv_drain_all_begin/end pair, check that CBs are called */
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g_assert_cmpint(s->drain_count, ==, 0);
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2017-12-06 18:13:53 +01:00
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g_assert_cmpint(backing_s->drain_count, ==, 0);
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do_drain_begin(drain_type, bs);
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2017-12-05 14:05:02 +01:00
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g_assert_cmpint(s->drain_count, ==, 1);
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2017-12-06 18:13:53 +01:00
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g_assert_cmpint(backing_s->drain_count, ==, !!recursive);
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do_drain_end(drain_type, bs);
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2017-12-05 14:05:02 +01:00
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g_assert_cmpint(s->drain_count, ==, 0);
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2017-12-06 18:13:53 +01:00
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g_assert_cmpint(backing_s->drain_count, ==, 0);
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2017-12-05 14:05:02 +01:00
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/* Now do the same while a request is pending */
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aio_ret = -EINPROGRESS;
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acb = blk_aio_preadv(blk, 0, &qiov, 0, aio_ret_cb, &aio_ret);
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g_assert(acb != NULL);
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g_assert_cmpint(aio_ret, ==, -EINPROGRESS);
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g_assert_cmpint(s->drain_count, ==, 0);
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2017-12-06 18:13:53 +01:00
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g_assert_cmpint(backing_s->drain_count, ==, 0);
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do_drain_begin(drain_type, bs);
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2017-12-05 14:05:02 +01:00
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g_assert_cmpint(aio_ret, ==, 0);
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g_assert_cmpint(s->drain_count, ==, 1);
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2017-12-06 18:13:53 +01:00
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g_assert_cmpint(backing_s->drain_count, ==, !!recursive);
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do_drain_end(drain_type, bs);
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2017-12-05 14:05:02 +01:00
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g_assert_cmpint(s->drain_count, ==, 0);
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2017-12-06 18:13:53 +01:00
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g_assert_cmpint(backing_s->drain_count, ==, 0);
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2017-12-05 14:05:02 +01:00
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2017-12-06 18:13:53 +01:00
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bdrv_unref(backing);
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2017-12-05 14:05:02 +01:00
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bdrv_unref(bs);
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blk_unref(blk);
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}
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2017-12-06 18:13:53 +01:00
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static void test_drv_cb_drain_all(void)
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{
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test_drv_cb_common(BDRV_DRAIN_ALL, true);
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}
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static void test_drv_cb_drain(void)
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{
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test_drv_cb_common(BDRV_DRAIN, false);
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}
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2017-12-06 18:13:53 +01:00
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static void test_drv_cb_drain_subtree(void)
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{
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test_drv_cb_common(BDRV_SUBTREE_DRAIN, true);
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}
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2017-12-07 17:00:22 +01:00
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static void test_quiesce_common(enum drain_type drain_type, bool recursive)
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{
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BlockBackend *blk;
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BlockDriverState *bs, *backing;
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blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
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bs = bdrv_new_open_driver(&bdrv_test, "test-node", BDRV_O_RDWR,
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&error_abort);
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blk_insert_bs(blk, bs, &error_abort);
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backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
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bdrv_set_backing_hd(bs, backing, &error_abort);
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g_assert_cmpint(bs->quiesce_counter, ==, 0);
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g_assert_cmpint(backing->quiesce_counter, ==, 0);
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do_drain_begin(drain_type, bs);
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g_assert_cmpint(bs->quiesce_counter, ==, 1);
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g_assert_cmpint(backing->quiesce_counter, ==, !!recursive);
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do_drain_end(drain_type, bs);
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g_assert_cmpint(bs->quiesce_counter, ==, 0);
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g_assert_cmpint(backing->quiesce_counter, ==, 0);
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bdrv_unref(backing);
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bdrv_unref(bs);
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blk_unref(blk);
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}
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static void test_quiesce_drain_all(void)
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{
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// XXX drain_all doesn't quiesce
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//test_quiesce_common(BDRV_DRAIN_ALL, true);
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}
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static void test_quiesce_drain(void)
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{
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test_quiesce_common(BDRV_DRAIN, false);
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}
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2017-12-06 18:13:53 +01:00
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static void test_quiesce_drain_subtree(void)
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{
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test_quiesce_common(BDRV_SUBTREE_DRAIN, true);
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}
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2017-12-13 18:14:49 +01:00
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static void test_nested(void)
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{
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BlockBackend *blk;
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BlockDriverState *bs, *backing;
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BDRVTestState *s, *backing_s;
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enum drain_type outer, inner;
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blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
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bs = bdrv_new_open_driver(&bdrv_test, "test-node", BDRV_O_RDWR,
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&error_abort);
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s = bs->opaque;
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blk_insert_bs(blk, bs, &error_abort);
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backing = bdrv_new_open_driver(&bdrv_test, "backing", 0, &error_abort);
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backing_s = backing->opaque;
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bdrv_set_backing_hd(bs, backing, &error_abort);
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for (outer = 0; outer < DRAIN_TYPE_MAX; outer++) {
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for (inner = 0; inner < DRAIN_TYPE_MAX; inner++) {
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/* XXX bdrv_drain_all() doesn't increase the quiesce_counter */
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int bs_quiesce = (outer != BDRV_DRAIN_ALL) +
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(inner != BDRV_DRAIN_ALL);
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2017-12-06 18:13:53 +01:00
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int backing_quiesce = (outer == BDRV_SUBTREE_DRAIN) +
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(inner == BDRV_SUBTREE_DRAIN);
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2017-12-13 18:14:49 +01:00
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int backing_cb_cnt = (outer != BDRV_DRAIN) +
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(inner != BDRV_DRAIN);
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g_assert_cmpint(bs->quiesce_counter, ==, 0);
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g_assert_cmpint(backing->quiesce_counter, ==, 0);
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g_assert_cmpint(s->drain_count, ==, 0);
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g_assert_cmpint(backing_s->drain_count, ==, 0);
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do_drain_begin(outer, bs);
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do_drain_begin(inner, bs);
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g_assert_cmpint(bs->quiesce_counter, ==, bs_quiesce);
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g_assert_cmpint(backing->quiesce_counter, ==, backing_quiesce);
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g_assert_cmpint(s->drain_count, ==, 2);
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g_assert_cmpint(backing_s->drain_count, ==, backing_cb_cnt);
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do_drain_end(inner, bs);
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do_drain_end(outer, bs);
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g_assert_cmpint(bs->quiesce_counter, ==, 0);
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g_assert_cmpint(backing->quiesce_counter, ==, 0);
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g_assert_cmpint(s->drain_count, ==, 0);
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g_assert_cmpint(backing_s->drain_count, ==, 0);
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}
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}
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bdrv_unref(backing);
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bdrv_unref(bs);
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blk_unref(blk);
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}
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2017-12-12 19:10:19 +01:00
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typedef struct TestBlockJob {
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BlockJob common;
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bool should_complete;
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} TestBlockJob;
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static void test_job_completed(BlockJob *job, void *opaque)
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{
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block_job_completed(job, 0);
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}
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static void coroutine_fn test_job_start(void *opaque)
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{
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TestBlockJob *s = opaque;
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while (!s->should_complete) {
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block_job_sleep_ns(&s->common, 100000);
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}
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block_job_defer_to_main_loop(&s->common, test_job_completed, NULL);
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}
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static void test_job_complete(BlockJob *job, Error **errp)
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{
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TestBlockJob *s = container_of(job, TestBlockJob, common);
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s->should_complete = true;
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}
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BlockJobDriver test_job_driver = {
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.instance_size = sizeof(TestBlockJob),
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.start = test_job_start,
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.complete = test_job_complete,
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};
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static void test_blockjob_common(enum drain_type drain_type)
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{
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BlockBackend *blk_src, *blk_target;
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BlockDriverState *src, *target;
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BlockJob *job;
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int ret;
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src = bdrv_new_open_driver(&bdrv_test, "source", BDRV_O_RDWR,
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&error_abort);
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blk_src = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
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blk_insert_bs(blk_src, src, &error_abort);
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target = bdrv_new_open_driver(&bdrv_test, "target", BDRV_O_RDWR,
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&error_abort);
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blk_target = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
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blk_insert_bs(blk_target, target, &error_abort);
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job = block_job_create("job0", &test_job_driver, src, 0, BLK_PERM_ALL, 0,
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0, NULL, NULL, &error_abort);
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block_job_add_bdrv(job, "target", target, 0, BLK_PERM_ALL, &error_abort);
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block_job_start(job);
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g_assert_cmpint(job->pause_count, ==, 0);
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g_assert_false(job->paused);
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g_assert_false(job->busy); /* We're in block_job_sleep_ns() */
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do_drain_begin(drain_type, src);
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if (drain_type == BDRV_DRAIN_ALL) {
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2017-12-14 10:12:42 +01:00
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/* bdrv_drain_all() drains both src and target */
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g_assert_cmpint(job->pause_count, ==, 2);
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2017-12-12 19:10:19 +01:00
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} else {
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g_assert_cmpint(job->pause_count, ==, 1);
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}
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/* XXX We don't wait until the job is actually paused. Is this okay? */
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/* g_assert_true(job->paused); */
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g_assert_false(job->busy); /* The job is paused */
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do_drain_end(drain_type, src);
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g_assert_cmpint(job->pause_count, ==, 0);
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g_assert_false(job->paused);
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g_assert_false(job->busy); /* We're in block_job_sleep_ns() */
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do_drain_begin(drain_type, target);
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if (drain_type == BDRV_DRAIN_ALL) {
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2017-12-14 10:12:42 +01:00
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/* bdrv_drain_all() drains both src and target */
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g_assert_cmpint(job->pause_count, ==, 2);
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2017-12-12 19:10:19 +01:00
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} else {
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g_assert_cmpint(job->pause_count, ==, 1);
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}
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/* XXX We don't wait until the job is actually paused. Is this okay? */
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/* g_assert_true(job->paused); */
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g_assert_false(job->busy); /* The job is paused */
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do_drain_end(drain_type, target);
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g_assert_cmpint(job->pause_count, ==, 0);
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g_assert_false(job->paused);
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g_assert_false(job->busy); /* We're in block_job_sleep_ns() */
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ret = block_job_complete_sync(job, &error_abort);
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g_assert_cmpint(ret, ==, 0);
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blk_unref(blk_src);
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blk_unref(blk_target);
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bdrv_unref(src);
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bdrv_unref(target);
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}
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static void test_blockjob_drain_all(void)
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{
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test_blockjob_common(BDRV_DRAIN_ALL);
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}
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static void test_blockjob_drain(void)
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{
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test_blockjob_common(BDRV_DRAIN);
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}
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|
2017-12-06 18:13:53 +01:00
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static void test_blockjob_drain_subtree(void)
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|
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{
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|
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test_blockjob_common(BDRV_SUBTREE_DRAIN);
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}
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|
2017-12-05 14:05:02 +01:00
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|
|
int main(int argc, char **argv)
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|
|
{
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|
|
bdrv_init();
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|
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qemu_init_main_loop(&error_abort);
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|
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g_test_init(&argc, &argv, NULL);
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g_test_add_func("/bdrv-drain/driver-cb/drain_all", test_drv_cb_drain_all);
|
2017-12-06 18:13:53 +01:00
|
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g_test_add_func("/bdrv-drain/driver-cb/drain", test_drv_cb_drain);
|
2017-12-06 18:13:53 +01:00
|
|
|
g_test_add_func("/bdrv-drain/driver-cb/drain_subtree",
|
|
|
|
test_drv_cb_drain_subtree);
|
2017-12-05 14:05:02 +01:00
|
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|
|
2017-12-07 17:00:22 +01:00
|
|
|
g_test_add_func("/bdrv-drain/quiesce/drain_all", test_quiesce_drain_all);
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g_test_add_func("/bdrv-drain/quiesce/drain", test_quiesce_drain);
|
2017-12-06 18:13:53 +01:00
|
|
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g_test_add_func("/bdrv-drain/quiesce/drain_subtree",
|
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|
|
test_quiesce_drain_subtree);
|
2017-12-07 17:00:22 +01:00
|
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|
2017-12-13 18:14:49 +01:00
|
|
|
g_test_add_func("/bdrv-drain/nested", test_nested);
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|
|
2017-12-12 19:10:19 +01:00
|
|
|
g_test_add_func("/bdrv-drain/blockjob/drain_all", test_blockjob_drain_all);
|
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|
|
g_test_add_func("/bdrv-drain/blockjob/drain", test_blockjob_drain);
|
2017-12-06 18:13:53 +01:00
|
|
|
g_test_add_func("/bdrv-drain/blockjob/drain_subtree",
|
|
|
|
test_blockjob_drain_subtree);
|
2017-12-12 19:10:19 +01:00
|
|
|
|
2017-12-05 14:05:02 +01:00
|
|
|
return g_test_run();
|
|
|
|
}
|