Merge pull request #2036 from hellohellenmao/1785120

New case of image_creation_lock_release

qemu/tests/cfg/image_creation_lock_release.cfg

+- image_creation_lock_release:
+    virt_test_type = qemu
+    type = image_creation_lock_release
+    start_vm = no
+    create_image = no
+    remove_image = yes
+    images = "lock_test"

qemu/tests/image_creation_lock_release.py

+from avocado.utils import process
+
+from virttest import data_dir
+from virttest.qemu_storage import QemuImg
+
+
+def run(test, params, env):
+    """
+    Image creation locking should be properly released.
+    1. Create raw image and close it after 0.5 sec.
+    2. Check there is no lock error of the CML.
+    :param test: Qemu test object.
+    :param params: Dictionary with the test parameters.
+    :param env: Dictionary with test environment.
+    """
+    lock_test = params["images"]
+    root_dir = data_dir.get_data_dir()
+    test_image = QemuImg(params.object_params(lock_test), root_dir, lock_test)
+    test_filename = test_image.image_filename
+    lock_err_info = 'Failed to get "consistent read" lock'
+    try:
+        process.run("qemu-img create -f raw -o preallocation=full %s 1G & "
+                    "sleep 0.5;qemu-io -c info -c close -r %s"
+                    % (test_filename, test_filename), shell=True)
+    except process.CmdError as err:
+        if lock_err_info in err.result.stderr.decode():
+            test.fail("Image lock not released: %s" % err)
+        else:
+            test.error("Command line failed: %s" % err)