qemu.tests: fix cfg typo in drive_mirror

Signed-off-by: NXu Tian <xutian@redhat.com>

qemu/tests/cfg/drive_mirror.cfg

@@ -92,7 +92,7 @@
                     negative_test = yes
                     variants:
                         - readonly_target:
-                            create_mode = existing
+                            create_mode_target = existing
                             before_start = readonly_target
                             before_cleanup = clear_readonly_bit
         - with_stress:

qemu/tests/drive_mirror_simple.py

@@ -56,12 +56,12 @@ def run(test, params, env):
             simple_test.action_before_start()
             try:
                 simple_test.start()
-            except error.TestFail, detail:
+            except Exception, detail:
                 if params.get("negative_test") == "yes":
-                    if not re.search(r"No active.*job", str(detail), re.I):
-                        raise error.TestFail("Block job not cancelled in"
-                                             "negative testing")
-                    break
+                    keywords = params.get("error_key_words", "Could not open")
+                    if simple_test.get_status():
+                        raise error.TestFail("Block job not cancel as expect")
+                    if keywords not in str(detail):
                         raise
             simple_test.action_before_steady()
             if simple_test.get_status():