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From 6d374393478f0d57ec8cd338342687d043565662 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Wed, 10 Oct 2018 20:21:58 +0100
Subject: test-bdrv-drain: Drain with block jobs in an I/O thread
RH-Author: Kevin Wolf <kwolf@redhat.com>
Message-id: <20181010202213.7372-20-kwolf@redhat.com>
Patchwork-id: 82608
O-Subject: [RHEL-8 qemu-kvm PATCH 29/44] test-bdrv-drain: Drain with block jobs in an I/O thread
Bugzilla: 1637976
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: John Snow <jsnow@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
This extends the existing drain test with a block job to include
variants where the block job runs in a different AioContext.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
(cherry picked from commit f62c172959cd2b6de4dd8ba782e855d64d94764b)
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tests/test-bdrv-drain.c | 92 +++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 86 insertions(+), 6 deletions(-)
diff --git a/tests/test-bdrv-drain.c b/tests/test-bdrv-drain.c
index 9bcb3c7..3cf3ba3 100644
--- a/tests/test-bdrv-drain.c
+++ b/tests/test-bdrv-drain.c
@@ -174,6 +174,28 @@ static void do_drain_end(enum drain_type drain_type, BlockDriverState *bs)
}
}
+static void do_drain_begin_unlocked(enum drain_type drain_type, BlockDriverState *bs)
+{
+ if (drain_type != BDRV_DRAIN_ALL) {
+ aio_context_acquire(bdrv_get_aio_context(bs));
+ }
+ do_drain_begin(drain_type, bs);
+ if (drain_type != BDRV_DRAIN_ALL) {
+ aio_context_release(bdrv_get_aio_context(bs));
+ }
+}
+
+static void do_drain_end_unlocked(enum drain_type drain_type, BlockDriverState *bs)
+{
+ if (drain_type != BDRV_DRAIN_ALL) {
+ aio_context_acquire(bdrv_get_aio_context(bs));
+ }
+ do_drain_end(drain_type, bs);
+ if (drain_type != BDRV_DRAIN_ALL) {
+ aio_context_release(bdrv_get_aio_context(bs));
+ }
+}
+
static void test_drv_cb_common(enum drain_type drain_type, bool recursive)
{
BlockBackend *blk;
@@ -785,11 +807,13 @@ BlockJobDriver test_job_driver = {
},
};
-static void test_blockjob_common(enum drain_type drain_type)
+static void test_blockjob_common(enum drain_type drain_type, bool use_iothread)
{
BlockBackend *blk_src, *blk_target;
BlockDriverState *src, *target;
BlockJob *job;
+ IOThread *iothread = NULL;
+ AioContext *ctx;
int ret;
src = bdrv_new_open_driver(&bdrv_test, "source", BDRV_O_RDWR,
@@ -797,21 +821,31 @@ static void test_blockjob_common(enum drain_type drain_type)
blk_src = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk_insert_bs(blk_src, src, &error_abort);
+ if (use_iothread) {
+ iothread = iothread_new();
+ ctx = iothread_get_aio_context(iothread);
+ blk_set_aio_context(blk_src, ctx);
+ } else {
+ ctx = qemu_get_aio_context();
+ }
+
target = bdrv_new_open_driver(&bdrv_test, "target", BDRV_O_RDWR,
&error_abort);
blk_target = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk_insert_bs(blk_target, target, &error_abort);
+ aio_context_acquire(ctx);
job = block_job_create("job0", &test_job_driver, NULL, src, 0, BLK_PERM_ALL,
0, 0, NULL, NULL, &error_abort);
block_job_add_bdrv(job, "target", target, 0, BLK_PERM_ALL, &error_abort);
job_start(&job->job);
+ aio_context_release(ctx);
g_assert_cmpint(job->job.pause_count, ==, 0);
g_assert_false(job->job.paused);
g_assert_true(job->job.busy); /* We're in job_sleep_ns() */
- do_drain_begin(drain_type, src);
+ do_drain_begin_unlocked(drain_type, src);
if (drain_type == BDRV_DRAIN_ALL) {
/* bdrv_drain_all() drains both src and target */
@@ -822,7 +856,14 @@ static void test_blockjob_common(enum drain_type drain_type)
g_assert_true(job->job.paused);
g_assert_false(job->job.busy); /* The job is paused */
- do_drain_end(drain_type, src);
+ do_drain_end_unlocked(drain_type, src);
+
+ if (use_iothread) {
+ /* paused is reset in the I/O thread, wait for it */
+ while (job->job.paused) {
+ aio_poll(qemu_get_aio_context(), false);
+ }
+ }
g_assert_cmpint(job->job.pause_count, ==, 0);
g_assert_false(job->job.paused);
@@ -841,32 +882,64 @@ static void test_blockjob_common(enum drain_type drain_type)
do_drain_end(drain_type, target);
+ if (use_iothread) {
+ /* paused is reset in the I/O thread, wait for it */
+ while (job->job.paused) {
+ aio_poll(qemu_get_aio_context(), false);
+ }
+ }
+
g_assert_cmpint(job->job.pause_count, ==, 0);
g_assert_false(job->job.paused);
g_assert_true(job->job.busy); /* We're in job_sleep_ns() */
+ aio_context_acquire(ctx);
ret = job_complete_sync(&job->job, &error_abort);
g_assert_cmpint(ret, ==, 0);
+ if (use_iothread) {
+ blk_set_aio_context(blk_src, qemu_get_aio_context());
+ }
+ aio_context_release(ctx);
+
blk_unref(blk_src);
blk_unref(blk_target);
bdrv_unref(src);
bdrv_unref(target);
+
+ if (iothread) {
+ iothread_join(iothread);
+ }
}
static void test_blockjob_drain_all(void)
{
- test_blockjob_common(BDRV_DRAIN_ALL);
+ test_blockjob_common(BDRV_DRAIN_ALL, false);
}
static void test_blockjob_drain(void)
{
- test_blockjob_common(BDRV_DRAIN);
+ test_blockjob_common(BDRV_DRAIN, false);
}
static void test_blockjob_drain_subtree(void)
{
- test_blockjob_common(BDRV_SUBTREE_DRAIN);
+ test_blockjob_common(BDRV_SUBTREE_DRAIN, false);
+}
+
+static void test_blockjob_iothread_drain_all(void)
+{
+ test_blockjob_common(BDRV_DRAIN_ALL, true);
+}
+
+static void test_blockjob_iothread_drain(void)
+{
+ test_blockjob_common(BDRV_DRAIN, true);
+}
+
+static void test_blockjob_iothread_drain_subtree(void)
+{
+ test_blockjob_common(BDRV_SUBTREE_DRAIN, true);
}
@@ -1337,6 +1410,13 @@ int main(int argc, char **argv)
g_test_add_func("/bdrv-drain/blockjob/drain_subtree",
test_blockjob_drain_subtree);
+ g_test_add_func("/bdrv-drain/blockjob/iothread/drain_all",
+ test_blockjob_iothread_drain_all);
+ g_test_add_func("/bdrv-drain/blockjob/iothread/drain",
+ test_blockjob_iothread_drain);
+ g_test_add_func("/bdrv-drain/blockjob/iothread/drain_subtree",
+ test_blockjob_iothread_drain_subtree);
+
g_test_add_func("/bdrv-drain/deletion/drain", test_delete_by_drain);
g_test_add_func("/bdrv-drain/detach/drain_all", test_detach_by_drain_all);
g_test_add_func("/bdrv-drain/detach/drain", test_detach_by_drain);
--
1.8.3.1
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