[Qemu-block] [PATCH 2/4] iotests: Prefer null-co over null-aio

[Max Reitz]

We use null-co basically everywhere in the iotests.  Unless we want to
test null-aio specifically, we should use it instead (for consistency).

Signed-off-by: Max Reitz <address@hidden>
---
 tests/qemu-iotests/093 | 7 +++----
 tests/qemu-iotests/245 | 2 +-
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/tests/qemu-iotests/093 b/tests/qemu-iotests/093
index d88fbc182e..bd56c94708 100755
--- a/tests/qemu-iotests/093
+++ b/tests/qemu-iotests/093
@@ -267,13 +267,12 @@ class ThrottleTestCoroutine(ThrottleTestCase):
     test_img = "null-co://"
 
 class ThrottleTestGroupNames(iotests.QMPTestCase):
-    test_img = "null-aio://"
     max_drives = 3
 
     def setUp(self):
         self.vm = iotests.VM()
         for i in range(0, self.max_drives):
-            self.vm.add_drive(self.test_img, "throttling.iops-total=100")
+            self.vm.add_drive("null-co://", "throttling.iops-total=100")
         self.vm.launch()
 
     def tearDown(self):
@@ -377,10 +376,10 @@ class ThrottleTestRemovableMedia(iotests.QMPTestCase):
 
     def test_removable_media(self):
         # Add a couple of dummy nodes named cd0 and cd1
-        result = self.vm.qmp("blockdev-add", driver="null-aio",
+        result = self.vm.qmp("blockdev-add", driver="null-co",
                              node_name="cd0")
         self.assert_qmp(result, 'return', {})
-        result = self.vm.qmp("blockdev-add", driver="null-aio",
+        result = self.vm.qmp("blockdev-add", driver="null-co",
                              node_name="cd1")
         self.assert_qmp(result, 'return', {})
 
diff --git a/tests/qemu-iotests/245 b/tests/qemu-iotests/245
index a04c6235c1..d888a1354c 100644
--- a/tests/qemu-iotests/245
+++ b/tests/qemu-iotests/245
@@ -598,7 +598,7 @@ class TestBlockdevReopen(iotests.QMPTestCase):
         ##################
         ###### null ######
         ##################
-        opts = {'driver': 'null-aio', 'node-name': 'root', 'size': 1024}
+        opts = {'driver': 'null-co', 'node-name': 'root', 'size': 1024}
 
         result = self.vm.qmp('blockdev-add', conv_keys = False, **opts)
         self.assert_qmp(result, 'return', {})
-- 
2.21.0