From d7af67d87506412b0b9b24dcc4c4bb7bd9de49ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Tue, 23 May 2017 23:28:13 +0200
Subject: [PATCH] storage: minor error handling fix

---
 qubes/storage/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qubes/storage/__init__.py b/qubes/storage/__init__.py
index ac56ba8a..3dc7676c 100644
--- a/qubes/storage/__init__.py
+++ b/qubes/storage/__init__.py
@@ -215,7 +215,7 @@ class Storage(object):
 
     def init_volume(self, name, volume_config):
         ''' Initialize Volume instance attached to this domain '''
-        assert 'pool' in volume_config, "Pool missing in volume_config" % str(
+        assert 'pool' in volume_config, "Pool missing in volume_config " + str(
             volume_config)
 
         if 'name' not in volume_config: