Set max volume size limit for the tenant

There is a need to limit maximum size of a volume to levels
that the storage infrastructure can handle.
Setting a maximum limit on size of a volume also prevents
a tenant from creating large volumes that have not been tested
and certified to satisfy SLA objectives.

This feature allows admin to set volume size limit
[per_volume_gigabytes] for a tenant.

Change-Id: Iab584c72a34f9171000b20b2200ac12d21fc40ae
Implements: blueprint cinder-quota-define-per-volume

cinderclient/tests/unit/v2/fakes.py

@@ -539,7 +539,8 @@ class FakeHTTPClient(base_client.HTTPClient):
                           'gigabytes': 1,
                           'backups': 1,
                           'backup_gigabytes': 1,
-                          'consistencygroups': 1}})
+                          'consistencygroups': 1,
+                          'per_volume_gigabytes': 1, }})
 
     def get_os_quota_sets_test_defaults(self):
         return (200, {}, {'quota_set': {
@@ -550,7 +551,8 @@ class FakeHTTPClient(base_client.HTTPClient):
                           'gigabytes': 1,
                           'backups': 1,
                           'backup_gigabytes': 1,
-                          'consistencygroups': 1}})
+                          'consistencygroups': 1,
+                          'per_volume_gigabytes': 1, }})
 
     def put_os_quota_sets_test(self, body, **kw):
         assert list(body) == ['quota_set']
@@ -564,7 +566,8 @@ class FakeHTTPClient(base_client.HTTPClient):
                           'gigabytes': 1,
                           'backups': 1,
                           'backup_gigabytes': 1,
-                          'consistencygroups': 2}})
+                          'consistencygroups': 2,
+                          'per_volume_gigabytes': 1, }})
 
     def delete_os_quota_sets_1234(self, **kw):
         return (200, {}, {})
@@ -585,7 +588,8 @@ class FakeHTTPClient(base_client.HTTPClient):
                           'gigabytes': 1,
                           'backups': 1,
                           'backup_gigabytes': 1,
-                          'consistencygroups': 1}})
+                          'consistencygroups': 1,
+                          'per_volume_gigabytes': 1, }})
 
     def put_os_quota_class_sets_test(self, body, **kw):
         assert list(body) == ['quota_class_set']
@@ -599,7 +603,8 @@ class FakeHTTPClient(base_client.HTTPClient):
                           'gigabytes': 1,
                           'backups': 1,
                           'backup_gigabytes': 1,
-                          'consistencygroups': 2}})
+                          'consistencygroups': 2,
+                          'per_volume_gigabytes': 1}})
 
     #
     # VolumeTypes

cinderclient/tests/unit/v2/test_quota_classes.py

@@ -31,7 +31,7 @@ class QuotaClassSetsTest(utils.TestCase):
         q = cs.quota_classes.get('test')
         q.update(volumes=2, snapshots=2, gigabytes=2000,
                  backups=2, backup_gigabytes=2000,
-                 consistencygroups=2)
+                 consistencygroups=2, per_volume_gigabytes=100)
         cs.assert_called('PUT', '/os-quota-class-sets/test')
 
     def test_refresh_quota(self):
@@ -43,6 +43,7 @@ class QuotaClassSetsTest(utils.TestCase):
         self.assertEqual(q.backups, q2.backups)
         self.assertEqual(q.backup_gigabytes, q2.backup_gigabytes)
         self.assertEqual(q.consistencygroups, q2.consistencygroups)
+        self.assertEqual(q.per_volume_gigabytes, q2.per_volume_gigabytes)
         q2.volumes = 0
         self.assertNotEqual(q.volumes, q2.volumes)
         q2.snapshots = 0
@@ -55,6 +56,8 @@ class QuotaClassSetsTest(utils.TestCase):
         self.assertNotEqual(q.backup_gigabytes, q2.backup_gigabytes)
         q2.consistencygroups = 0
         self.assertNotEqual(q.consistencygroups, q2.consistencygroups)
+        q2.per_volume_gigabytes = 0
+        self.assertNotEqual(q.per_volume_gigabytes, q2.per_volume_gigabytes)
         q2.get()
         self.assertEqual(q.volumes, q2.volumes)
         self.assertEqual(q.snapshots, q2.snapshots)
@@ -62,3 +65,4 @@ class QuotaClassSetsTest(utils.TestCase):
         self.assertEqual(q.backups, q2.backups)
         self.assertEqual(q.backup_gigabytes, q2.backup_gigabytes)
         self.assertEqual(q.consistencygroups, q2.consistencygroups)
+        self.assertEqual(q.per_volume_gigabytes, q2.per_volume_gigabytes)

cinderclient/tests/unit/v2/test_quotas.py

@@ -40,6 +40,7 @@ class QuotaSetsTest(utils.TestCase):
         q.update(backups=2)
         q.update(backup_gigabytes=2000)
         q.update(consistencygroups=2)
+        q.update(per_volume_gigabytes=100)
         cs.assert_called('PUT', '/os-quota-sets/test')
 
     def test_refresh_quota(self):
@@ -51,6 +52,7 @@ class QuotaSetsTest(utils.TestCase):
         self.assertEqual(q.backups, q2.backups)
         self.assertEqual(q.backup_gigabytes, q2.backup_gigabytes)
         self.assertEqual(q.consistencygroups, q2.consistencygroups)
+        self.assertEqual(q.per_volume_gigabytes, q2.per_volume_gigabytes)
         q2.volumes = 0
         self.assertNotEqual(q.volumes, q2.volumes)
         q2.snapshots = 0
@@ -63,6 +65,8 @@ class QuotaSetsTest(utils.TestCase):
         self.assertNotEqual(q.backup_gigabytes, q2.backup_gigabytes)
         q2.consistencygroups = 0
         self.assertNotEqual(q.consistencygroups, q2.consistencygroups)
+        q2.per_volume_gigabytes = 0
+        self.assertNotEqual(q.per_volume_gigabytes, q2.per_volume_gigabytes)
         q2.get()
         self.assertEqual(q.volumes, q2.volumes)
         self.assertEqual(q.snapshots, q2.snapshots)
@@ -70,6 +74,7 @@ class QuotaSetsTest(utils.TestCase):
         self.assertEqual(q.backups, q2.backups)
         self.assertEqual(q.backup_gigabytes, q2.backup_gigabytes)
         self.assertEqual(q.consistencygroups, q2.consistencygroups)
+        self.assertEqual(q.per_volume_gigabytes, q2.per_volume_gigabytes)
 
     def test_delete_quota(self):
         tenant_id = 'test'

cinderclient/v2/shell.py

@@ -892,7 +892,7 @@ def do_credentials(cs, args):
 
 _quota_resources = ['volumes', 'snapshots', 'gigabytes',
                     'backups', 'backup_gigabytes',
-                    'consistencygroups']
+                    'consistencygroups', 'per_volume_gigabytes']
 _quota_infos = ['Type', 'In_use', 'Reserved', 'Limit']
 
 
@@ -998,6 +998,10 @@ def do_quota_defaults(cs, args):
            metavar='<volume_type_name>',
            default=None,
            help='Volume type. Default=None.')
+@utils.arg('--per-volume-gigabytes',
+           metavar='<per_volume_gigabytes>',
+           type=int, default=None,
+           help='Set max volume size limit. Default=None.')
 @utils.service_type('volumev2')
 def do_quota_update(cs, args):
     """Updates quotas for a tenant."""