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Blame SOURCES/kvm-test-bdrv-drain-AIO_WAIT_WHILE-in-job-.commit-.abort.patch

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From be943af669f0514cd0a83b1a9f1c984530459ba5 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Wed, 10 Oct 2018 20:22:10 +0100
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Subject: [PATCH 44/49] test-bdrv-drain: AIO_WAIT_WHILE() in job .commit/.abort
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20181010202213.7372-32-kwolf@redhat.com>
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Patchwork-id: 82620
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O-Subject: [RHEL-8 qemu-kvm PATCH 41/44] test-bdrv-drain: AIO_WAIT_WHILE() in job .commit/.abort
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Bugzilla: 1637976
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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This adds tests for calling AIO_WAIT_WHILE() in the .commit and .abort
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callbacks. Both reasons why .abort could be called for a single job are
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tested: Either .run or .prepare could return an error.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Max Reitz <mreitz@redhat.com>
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(cherry picked from commit d49725af46a7710cde02cc120b7f1e485154b483)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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 tests/test-bdrv-drain.c | 116 +++++++++++++++++++++++++++++++++++++++++++-----
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 1 file changed, 104 insertions(+), 12 deletions(-)
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diff --git a/tests/test-bdrv-drain.c b/tests/test-bdrv-drain.c
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index f4b57f7..d6202b2 100644
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--- a/tests/test-bdrv-drain.c
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+++ b/tests/test-bdrv-drain.c
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@@ -784,6 +784,8 @@ static void test_iothread_drain_subtree(void)
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 typedef struct TestBlockJob {
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     BlockJob common;
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+    int run_ret;
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+    int prepare_ret;
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     bool should_complete;
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 } TestBlockJob;
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@@ -793,7 +795,23 @@ static int test_job_prepare(Job *job)
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     /* Provoke an AIO_WAIT_WHILE() call to verify there is no deadlock */
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     blk_flush(s->common.blk);
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-    return 0;
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+    return s->prepare_ret;
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+}
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+
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+static void test_job_commit(Job *job)
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+{
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+    TestBlockJob *s = container_of(job, TestBlockJob, common.job);
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+
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+    /* Provoke an AIO_WAIT_WHILE() call to verify there is no deadlock */
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+    blk_flush(s->common.blk);
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+}
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+
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+static void test_job_abort(Job *job)
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+{
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+    TestBlockJob *s = container_of(job, TestBlockJob, common.job);
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+
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+    /* Provoke an AIO_WAIT_WHILE() call to verify there is no deadlock */
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+    blk_flush(s->common.blk);
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 }
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 static int coroutine_fn test_job_run(Job *job, Error **errp)
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@@ -809,7 +827,7 @@ static int coroutine_fn test_job_run(Job *job, Error **errp)
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         job_pause_point(&s->common.job);
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     }
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-    return 0;
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+    return s->run_ret;
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 }
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 static void test_job_complete(Job *job, Error **errp)
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@@ -827,14 +845,24 @@ BlockJobDriver test_job_driver = {
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         .run            = test_job_run,
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         .complete       = test_job_complete,
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         .prepare        = test_job_prepare,
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+        .commit         = test_job_commit,
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+        .abort          = test_job_abort,
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     },
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 };
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-static void test_blockjob_common(enum drain_type drain_type, bool use_iothread)
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+enum test_job_result {
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+    TEST_JOB_SUCCESS,
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+    TEST_JOB_FAIL_RUN,
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+    TEST_JOB_FAIL_PREPARE,
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+};
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+
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+static void test_blockjob_common(enum drain_type drain_type, bool use_iothread,
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+                                 enum test_job_result result)
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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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+    TestBlockJob *tjob;
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     IOThread *iothread = NULL;
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     AioContext *ctx;
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     int ret;
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@@ -858,9 +886,23 @@ static void test_blockjob_common(enum drain_type drain_type, bool use_iothread)
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     blk_insert_bs(blk_target, target, &error_abort);
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     aio_context_acquire(ctx);
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-    job = block_job_create("job0", &test_job_driver, NULL, src, 0, BLK_PERM_ALL,
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-                           0, 0, NULL, NULL, &error_abort);
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+    tjob = block_job_create("job0", &test_job_driver, NULL, src,
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+                            0, BLK_PERM_ALL,
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+                            0, 0, NULL, NULL, &error_abort);
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+    job = &tjob->common;
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     block_job_add_bdrv(job, "target", target, 0, BLK_PERM_ALL, &error_abort);
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+
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+    switch (result) {
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+    case TEST_JOB_SUCCESS:
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+        break;
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+    case TEST_JOB_FAIL_RUN:
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+        tjob->run_ret = -EIO;
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+        break;
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+    case TEST_JOB_FAIL_PREPARE:
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+        tjob->prepare_ret = -EIO;
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+        break;
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+    }
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+
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     job_start(&job->job);
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     aio_context_release(ctx);
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@@ -918,7 +960,7 @@ static void test_blockjob_common(enum drain_type drain_type, bool use_iothread)
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     aio_context_acquire(ctx);
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     ret = job_complete_sync(&job->job, &error_abort);
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-    g_assert_cmpint(ret, ==, 0);
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+    g_assert_cmpint(ret, ==, (result == TEST_JOB_SUCCESS ? 0 : -EIO));
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     if (use_iothread) {
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         blk_set_aio_context(blk_src, qemu_get_aio_context());
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@@ -937,32 +979,68 @@ static void test_blockjob_common(enum drain_type drain_type, bool use_iothread)
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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, false);
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+    test_blockjob_common(BDRV_DRAIN_ALL, false, TEST_JOB_SUCCESS);
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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, false);
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+    test_blockjob_common(BDRV_DRAIN, false, TEST_JOB_SUCCESS);
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 }
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 static void test_blockjob_drain_subtree(void)
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 {
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-    test_blockjob_common(BDRV_SUBTREE_DRAIN, false);
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+    test_blockjob_common(BDRV_SUBTREE_DRAIN, false, TEST_JOB_SUCCESS);
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+}
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+
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+static void test_blockjob_error_drain_all(void)
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+{
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+    test_blockjob_common(BDRV_DRAIN_ALL, false, TEST_JOB_FAIL_RUN);
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+    test_blockjob_common(BDRV_DRAIN_ALL, false, TEST_JOB_FAIL_PREPARE);
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+}
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+
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+static void test_blockjob_error_drain(void)
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+{
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+    test_blockjob_common(BDRV_DRAIN, false, TEST_JOB_FAIL_RUN);
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+    test_blockjob_common(BDRV_DRAIN, false, TEST_JOB_FAIL_PREPARE);
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+}
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+
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+static void test_blockjob_error_drain_subtree(void)
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+{
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+    test_blockjob_common(BDRV_SUBTREE_DRAIN, false, TEST_JOB_FAIL_RUN);
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+    test_blockjob_common(BDRV_SUBTREE_DRAIN, false, TEST_JOB_FAIL_PREPARE);
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 }
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 static void test_blockjob_iothread_drain_all(void)
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 {
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-    test_blockjob_common(BDRV_DRAIN_ALL, true);
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+    test_blockjob_common(BDRV_DRAIN_ALL, true, TEST_JOB_SUCCESS);
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 }
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 static void test_blockjob_iothread_drain(void)
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 {
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-    test_blockjob_common(BDRV_DRAIN, true);
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+    test_blockjob_common(BDRV_DRAIN, true, TEST_JOB_SUCCESS);
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 }
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 static void test_blockjob_iothread_drain_subtree(void)
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 {
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-    test_blockjob_common(BDRV_SUBTREE_DRAIN, true);
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+    test_blockjob_common(BDRV_SUBTREE_DRAIN, true, TEST_JOB_SUCCESS);
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+}
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+
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+static void test_blockjob_iothread_error_drain_all(void)
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+{
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+    test_blockjob_common(BDRV_DRAIN_ALL, true, TEST_JOB_FAIL_RUN);
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+    test_blockjob_common(BDRV_DRAIN_ALL, true, TEST_JOB_FAIL_PREPARE);
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+}
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+
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+static void test_blockjob_iothread_error_drain(void)
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+{
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+    test_blockjob_common(BDRV_DRAIN, true, TEST_JOB_FAIL_RUN);
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+    test_blockjob_common(BDRV_DRAIN, true, TEST_JOB_FAIL_PREPARE);
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+}
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+
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+static void test_blockjob_iothread_error_drain_subtree(void)
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+{
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+    test_blockjob_common(BDRV_SUBTREE_DRAIN, true, TEST_JOB_FAIL_RUN);
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+    test_blockjob_common(BDRV_SUBTREE_DRAIN, true, TEST_JOB_FAIL_PREPARE);
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 }
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@@ -1433,6 +1511,13 @@ int main(int argc, char **argv)
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     g_test_add_func("/bdrv-drain/blockjob/drain_subtree",
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                     test_blockjob_drain_subtree);
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+    g_test_add_func("/bdrv-drain/blockjob/error/drain_all",
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+                    test_blockjob_error_drain_all);
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+    g_test_add_func("/bdrv-drain/blockjob/error/drain",
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+                    test_blockjob_error_drain);
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+    g_test_add_func("/bdrv-drain/blockjob/error/drain_subtree",
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+                    test_blockjob_error_drain_subtree);
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+
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     g_test_add_func("/bdrv-drain/blockjob/iothread/drain_all",
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                     test_blockjob_iothread_drain_all);
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     g_test_add_func("/bdrv-drain/blockjob/iothread/drain",
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@@ -1440,6 +1525,13 @@ int main(int argc, char **argv)
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     g_test_add_func("/bdrv-drain/blockjob/iothread/drain_subtree",
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                     test_blockjob_iothread_drain_subtree);
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+    g_test_add_func("/bdrv-drain/blockjob/iothread/error/drain_all",
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+                    test_blockjob_iothread_error_drain_all);
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+    g_test_add_func("/bdrv-drain/blockjob/iothread/error/drain",
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+                    test_blockjob_iothread_error_drain);
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+    g_test_add_func("/bdrv-drain/blockjob/iothread/error/drain_subtree",
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+                    test_blockjob_iothread_error_drain_subtree);
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+
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     g_test_add_func("/bdrv-drain/deletion/drain", test_delete_by_drain);
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     g_test_add_func("/bdrv-drain/detach/drain_all", test_detach_by_drain_all);
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     g_test_add_func("/bdrv-drain/detach/drain", test_detach_by_drain);
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-- 
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1.8.3.1
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