This test case checks that it's possible to launch several stream
operations in parallel in the same snapshot chain, each one involving
a different set of nodes.
Signed-off-by: Alberto Garcia <be...@igalia.com>
Reviewed-by: Max Reitz <mre...@redhat.com>
---
tests/qemu-iotests/030 | 80 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/030.out | 4 +--
2 files changed, 82 insertions(+), 2 deletions(-)
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index 0927457..c199cef 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -145,6 +145,86 @@ class TestSingleDrive(iotests.QMPTestCase):
self.assert_qmp(result, 'error/class', 'GenericError')
+class TestParallelOps(iotests.QMPTestCase):
+ image_len = 2 * 1024 * 1024 # MB
+ num_ops = 4 # Number of parallel block-stream operations
+ num_imgs = num_ops * 2 + 1
+ imgs = []
+
+ def setUp(self):
+ opts = []
+ self.imgs = []
+
+ # Initialize file names and command-line options
+ for i in range(self.num_imgs):
+ img_depth = self.num_imgs - i - 1
+ opts.append("backing." * img_depth + "node-name=node%d" % i)
+ self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i))
+
+ # Create all images
+ iotests.create_image(self.imgs[0], self.image_len)
+ for i in range(1, self.num_imgs):
+ qemu_img('create', '-f', iotests.imgfmt,
+ '-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i])
+
+ # Put data into the images we are copying data from
+ for i in range(1, self.num_imgs, 2):
+ qemu_io('-f', iotests.imgfmt,
+ '-c', 'write -P %d %d 128K' % (i, i*128*1024),
self.imgs[i])
+
+ # Attach the drive to the VM
+ self.vm = iotests.VM()
+ self.vm.add_drive("blkdebug::" + self.imgs[-1], ','.join(opts))
+ self.vm.launch()
+
+ def tearDown(self):
+ self.vm.shutdown()
+ for img in self.imgs:
+ os.remove(img)
+
+ # Test that it's possible to run several block-stream operations
+ # in parallel in the same snapshot chain
+ def test_stream_parallel(self):
+ self.assert_no_active_block_jobs()
+
+ # Check that the maps don't match before the streaming operations
+ for i in range(2, self.num_imgs, 2):
+ self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map',
self.imgs[i]),
+ qemu_io('-f', iotests.imgfmt, '-c', 'map',
self.imgs[i-1]),
+ 'image file map matches backing file before
streaming')
+
+ # Create all streaming jobs
+ pending_jobs = []
+ for i in range(2, self.num_imgs, 2):
+ node_name = 'node%d' % i
+ pending_jobs.append(node_name)
+ result = self.vm.qmp('block-stream', device=node_name,
base=self.imgs[i-2], speed=32768)
+ self.assert_qmp(result, 'return', {})
+
+ # The block job on the active image is always referenced by
+ # its device name. Therefore we have to replace the node name
+ # with the device name in the list of pending jobs
+ pending_jobs.pop()
+ pending_jobs.append("drive0")
+
+ # Wait for all jobs to be finished.
+ while len(pending_jobs) > 0:
+ for event in self.vm.get_qmp_events(wait=True):
+ if event['event'] == 'BLOCK_JOB_COMPLETED':
+ node_name = self.dictpath(event, 'data/device')
+ self.assertTrue(node_name in pending_jobs)
+ self.assert_qmp_absent(event, 'data/error')
+ pending_jobs.remove(node_name)
+
+ self.assert_no_active_block_jobs()
+ self.vm.shutdown()
+
+ # Check that all maps match now
+ for i in range(2, self.num_imgs, 2):
+ self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map',
self.imgs[i]),
+ qemu_io('-f', iotests.imgfmt, '-c', 'map',
self.imgs[i-1]),
+ 'image file map does not match backing file after
streaming')
+
class TestSmallerBackingFile(iotests.QMPTestCase):
backing_len = 1 * 1024 * 1024 # MB
image_len = 2 * backing_len
diff --git a/tests/qemu-iotests/030.out b/tests/qemu-iotests/030.out
index 96961ed..b6f2576 100644
--- a/tests/qemu-iotests/030.out
+++ b/tests/qemu-iotests/030.out
@@ -1,5 +1,5 @@
-...............
+................
----------------------------------------------------------------------
-Ran 15 tests
+Ran 16 tests
OK
--
2.1.4
