[PATCH v4 06/10] iotests/129: Use throttle node

[Max Reitz]

Throttling on the BB has not affected block jobs in a while, so it is
possible that one of the jobs in 129 finishes before the VM is stopped.
We can fix that by running the job from a throttle node.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/129 | 37 +++++++++++++------------------------
 1 file changed, 13 insertions(+), 24 deletions(-)

diff --git a/tests/qemu-iotests/129 b/tests/qemu-iotests/129
index dd23bb2e5a..d40e2db24e 100755
--- a/tests/qemu-iotests/129
+++ b/tests/qemu-iotests/129
@@ -32,20 +32,18 @@ class TestStopWithBlockJob(iotests.QMPTestCase):
         iotests.qemu_img('create', '-f', iotests.imgfmt, self.test_img,
                          "-b", self.base_img, '-F', iotests.imgfmt)
         iotests.qemu_io('-f', iotests.imgfmt, '-c', 'write -P0x5d 1M 128M', 
self.test_img)
-        self.vm = iotests.VM().add_drive(self.test_img)
+        self.vm = iotests.VM()
+        self.vm.add_object('throttle-group,id=tg0,x-bps-total=1024')
+
+        source_drive = 'driver=throttle,' \
+                       'throttle-group=tg0,' \
+                       f'file.driver={iotests.imgfmt},' \
+                       f'file.file.filename={self.test_img}'
+
+        self.vm.add_drive(None, source_drive)
         self.vm.launch()
 
     def tearDown(self):
-        params = {"device": "drive0",
-                  "bps": 0,
-                  "bps_rd": 0,
-                  "bps_wr": 0,
-                  "iops": 0,
-                  "iops_rd": 0,
-                  "iops_wr": 0,
-                 }
-        result = self.vm.qmp("block_set_io_throttle", conv_keys=False,
-                             **params)
         self.vm.shutdown()
         for img in (self.test_img, self.target_img, self.base_img):
             iotests.try_remove(img)
@@ -53,33 +51,24 @@ class TestStopWithBlockJob(iotests.QMPTestCase):
     def do_test_stop(self, cmd, **args):
         """Test 'stop' while block job is running on a throttled drive.
         The 'stop' command shouldn't drain the job"""
-        params = {"device": "drive0",
-                  "bps": 1024,
-                  "bps_rd": 0,
-                  "bps_wr": 0,
-                  "iops": 0,
-                  "iops_rd": 0,
-                  "iops_wr": 0,
-                 }
-        result = self.vm.qmp("block_set_io_throttle", conv_keys=False,
-                             **params)
-        self.assert_qmp(result, 'return', {})
         result = self.vm.qmp(cmd, **args)
         self.assert_qmp(result, 'return', {})
+
         result = self.vm.qmp("stop")
         self.assert_qmp(result, 'return', {})
         result = self.vm.qmp("query-block-jobs")
+
         self.assert_qmp(result, 'return[0]/status', 'running')
         self.assert_qmp(result, 'return[0]/ready', False)
 
     def test_drive_mirror(self):
         self.do_test_stop("drive-mirror", device="drive0",
-                          target=self.target_img,
+                          target=self.target_img, format=iotests.imgfmt,
                           sync="full")
 
     def test_drive_backup(self):
         self.do_test_stop("drive-backup", device="drive0",
-                          target=self.target_img,
+                          target=self.target_img, format=iotests.imgfmt,
                           sync="full")
 
     def test_block_commit(self):
-- 
2.29.2