diff --git a/fio/connection.py b/fio/connection.py
index 6d82179..40018c4 100644
--- a/fio/connection.py
+++ b/fio/connection.py
@@ -78,13 +78,25 @@
 
 
 def detach_volume(
+    att: openstack.compute.v2.volume_attachment.VolumeAttachment,
     srv: openstack.compute.v2.server.Server,
     vol: openstack.block_storage.v3.volume.Volume
 ) -> None:
-    cloud.compute.delete_volume_attachment(srv, vol)
+    cloud.compute.delete_volume_attachment(att, srv)
     cloud.volume.wait_for_status(vol, status='available')
 
 
+def find_server_group(
+        name: str
+) -> Union[openstack.compute.v2.server_group.ServerGroup, None]:
+    server_groups = cloud.compute.server_groups(all_projects=True)
+    matching_server_groups = [s for s in server_groups
+                              if s.name == name]
+    server_group = matching_server_groups[0] \
+        if matching_server_groups else None
+    return server_group
+
+
 if __name__ == "__main__":
     print(UBUNTU_IMAGE_NAME)
     print(FIO_SG_NAME)