[Unity]: Failed to delete cifs share if wrong access set

If wrong access was set, CIFS share won't be able to delete.

Change-Id: Ie1c47dcbd53f7f49d9a8669e9912bb88abd6ac30
Closes-bug: #1845452

manila/share/drivers/dell_emc/plugins/unity/client.py

@@ -275,7 +275,11 @@ class UnityClient(object):
     def cifs_deny_access(self, share_name, user_name):
         share = self.system.get_cifs_share(name=share_name)
 
-        share.delete_ace(user=user_name)
+        try:
+            share.delete_ace(user=user_name)
+        except storops_ex.UnityAclUserNotFoundError:
+            LOG.debug('ACL User "%(user)s" does not exist.',
+                      {'user': user_name})
 
     def nfs_deny_access(self, share_name, host_ip):
         share = self.system.get_nfs_share(name=share_name)

manila/share/drivers/dell_emc/plugins/unity/connection.py

@@ -40,9 +40,10 @@ from manila import utils
 """Version history:
      7.0.0 - Supports DHSS=False mode
      7.0.1 - Fix parsing management IPv6 address
+     7.0.2 - Bugfix: failed to delete CIFS share if wrong access was set
 """
 
-VERSION = "7.0.1"
+VERSION = "7.0.2"
 
 LOG = log.getLogger(__name__)
 SUPPORTED_NETWORK_TYPES = (None, 'flat', 'vlan')

manila/tests/share/drivers/dell_emc/plugins/unity/fake_exceptions.py

@@ -88,3 +88,7 @@ class SystemAPINotSupported(UnityException):
 
 class UnityVLANAlreadyHasInterfaceError(UnityException):
     pass
+
+
+class UnityAclUserNotFoundError(UnityException):
+    pass

manila/tests/share/drivers/dell_emc/plugins/unity/test_client.py

@@ -160,6 +160,13 @@ class TestClient(test.TestCase):
 
         client.delete_snapshot(snapshot)
 
+    @res_mock.patch_client
+    def test_cifs_deny_access__nonexistentuser_expt(self, client):
+        try:
+            client.cifs_deny_access('fake_share_name', 'fake_username')
+        except fake_exceptions.UnityAclUserNotFoundError:
+            self.fail("UnityAclUserNotFoundError raised unexpectedly!")
+
     @res_mock.patch_client
     def test_nfs_deny_access__nonexistent_expt(self, client):
         client.nfs_deny_access('fake_share_name', 'fake_ip_addr')

releasenotes/notes/bug-1845452-unity--fix-fail-to-delete-cifs-share-c502a10ae306e506.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - Fixed an issue with Unity driver fails to delete CIFS share if wrong
+    access was set.