Merge "Revert "Update volume-status waiter for new cinder attach""
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index 9ee8858..ac03cdc 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -439,7 +439,7 @@
             # is already detached.
             pass
 
-    def attach_volume(self, server, volume, device=None, check_reserved=False):
+    def attach_volume(self, server, volume, device=None):
         """Attaches volume to server and waits for 'in-use' volume status.
 
         The volume will be detached when the test tears down.
@@ -448,15 +448,10 @@
         :param volume: The volume to attach.
         :param device: Optional mountpoint for the attached volume. Note that
             this is not guaranteed for all hypervisors and is not recommended.
-        :param check_reserved: Consider a status of reserved as valid for
-            completion. This is to handle new Cinder attach where we more
-            accurately use 'reserved' for things like attaching to a shelved
-            server.
         """
         attach_kwargs = dict(volumeId=volume['id'])
         if device:
             attach_kwargs['device'] = device
-
         attachment = self.servers_client.attach_volume(
             server['id'], **attach_kwargs)['volumeAttachment']
         # On teardown detach the volume and wait for it to be available. This
@@ -467,11 +462,8 @@
         # Ignore 404s on detach in case the server is deleted or the volume
         # is already detached.
         self.addCleanup(self._detach_volume, server, volume)
-        statuses = ['in-use']
-        if check_reserved:
-            statuses.append('reserved')
         waiters.wait_for_volume_resource_status(self.volumes_client,
-                                                volume['id'], statuses)
+                                                volume['id'], 'in-use')
         return attachment
 
 
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index 9bef80f..297e8a8 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -223,8 +223,7 @@
         num_vol = self._count_volumes(server, validation_resources)
         self._shelve_server(server, validation_resources)
         attachment = self.attach_volume(server, volume,
-                                        device=('/dev/%s' % self.device),
-                                        check_reserved=True)
+                                        device=('/dev/%s' % self.device))
 
         # Unshelve the instance and check that attached volume exists
         self._unshelve_server_and_check_volumes(
@@ -250,8 +249,7 @@
         self._shelve_server(server, validation_resources)
 
         # Attach and then detach the volume
-        self.attach_volume(server, volume, device=('/dev/%s' % self.device),
-                           check_reserved=True)
+        self.attach_volume(server, volume, device=('/dev/%s' % self.device))
         self.servers_client.detach_volume(server['id'], volume['id'])
         waiters.wait_for_volume_resource_status(self.volumes_client,
                                                 volume['id'], 'available')
diff --git a/tempest/common/waiters.py b/tempest/common/waiters.py
index 10afee0..08e2a12 100644
--- a/tempest/common/waiters.py
+++ b/tempest/common/waiters.py
@@ -179,15 +179,13 @@
     raise lib_exc.TimeoutException(message)
 
 
-def wait_for_volume_resource_status(client, resource_id, statuses):
-    """Waits for a volume resource to reach any of the specified statuses.
+def wait_for_volume_resource_status(client, resource_id, status):
+    """Waits for a volume resource to reach a given status.
 
     This function is a common function for volume, snapshot and backup
     resources. The function extracts the name of the desired resource from
     the client class name of the resource.
     """
-    if not isinstance(statuses, list):
-        statuses = [statuses]
     resource_name = re.findall(
         r'(volume|group-snapshot|snapshot|backup|group)',
         client.resource_type)[-1].replace('-', '_')
@@ -195,11 +193,11 @@
     resource_status = show_resource(resource_id)[resource_name]['status']
     start = int(time.time())
 
-    while resource_status not in statuses:
+    while resource_status != status:
         time.sleep(client.build_interval)
         resource_status = show_resource(resource_id)[
             '{}'.format(resource_name)]['status']
-        if resource_status == 'error' and resource_status not in statuses:
+        if resource_status == 'error' and resource_status != status:
             raise exceptions.VolumeResourceBuildErrorException(
                 resource_name=resource_name, resource_id=resource_id)
         if resource_name == 'volume' and resource_status == 'error_restoring':
@@ -208,11 +206,11 @@
         if int(time.time()) - start >= client.build_timeout:
             message = ('%s %s failed to reach %s status (current %s) '
                        'within the required time (%s s).' %
-                       (resource_name, resource_id, statuses, resource_status,
+                       (resource_name, resource_id, status, resource_status,
                         client.build_timeout))
             raise lib_exc.TimeoutException(message)
     LOG.info('%s %s reached %s after waiting for %f seconds',
-             resource_name, resource_id, statuses, time.time() - start)
+             resource_name, resource_id, status, time.time() - start)
 
 
 def wait_for_volume_retype(client, volume_id, new_volume_type):