diff --git a/glance_store/_drivers/cinder.py b/glance_store/_drivers/cinder.py
index 9d3b9ad..de2c4b4 100644
--- a/glance_store/_drivers/cinder.py
+++ b/glance_store/_drivers/cinder.py
@@ -604,18 +604,22 @@ class Store(glance_store.driver.Store):
 
         loc = location.store_location
 
+        self._check_context(context)
         try:
-            self._check_context(context)
             volume = get_cinderclient(self.conf,
                                       context).volumes.get(loc.volume_id)
-            return int(volume.metadata.get('image_size',
-                                           volume.size * units.Gi))
         except cinder_exception.NotFound:
             raise exceptions.NotFound(image=loc.volume_id)
-        except Exception:
-            LOG.exception(_LE("Failed to get image size due to "
-                              "internal error."))
-            return 0
+
+        if (is_user_overriden(self.conf) and
+                volume.metadata.get('image_owner') != context.tenant):
+            msg = _('Cannot get size of image volume %(id)s in another '
+                    'tenant') % {'id': loc.volume_id}
+            LOG.error(msg)
+            raise exceptions.BackendException(msg)
+
+        return int(volume.metadata.get('image_size',
+                                       volume.size * units.Gi))
 
     @capabilities.check
     def add(self, image_id, image_file, image_size, context=None,