1 files changed, 20 insertions, 0 deletions
diff --git a/tests/qemu-iotests/151 b/tests/qemu-iotests/151
index 06ee3585db..9b9c815db5 100755
--- a/tests/qemu-iotests/151
+++ b/tests/qemu-iotests/151
@@ -191,6 +191,26 @@ class TestActiveMirror(iotests.QMPTestCase):
 
         self.potential_writes_in_flight = False
 
+    def testUnalignedSmallerThanGranularityWriteZeroes(self):
+        # Fill the source image
+        self.vm.hmp_qemu_io('source', 'write -P 1 0 %i' % self.image_len);
+
+        # Start the block job
+        self.vm.cmd('blockdev-mirror',
+                    job_id='mirror',
+                    filter_node_name='mirror-node',
+                    device='source-node',
+                    target='target-node',
+                    sync='full',
+                    copy_mode='write-blocking')
+
+        # Wait for the READY event
+        self.wait_ready(drive='mirror')
+
+        for offset in range(6 * self.image_len // 8, 7 * self.image_len // 8, 1024 * 1024):
+            self.vm.hmp_qemu_io('source', 'aio_write -z %i 512' % (offset + 512))
+
+        self.complete_and_wait(drive='mirror', wait_ready=False)
 
 class TestThrottledWithNbdExportBase(iotests.QMPTestCase):
     image_len = 128 * 1024 * 1024  # MB