From 226bae038a375535ddd8f46ff07136d5473d1182 Mon Sep 17 00:00:00 2001
From: Aleksey Lim <alsroot@member.fsf.org>
Date: Wed, 10 Mar 2010 17:15:12 +0000
Subject: Do not remove internal metadata fields while rewriting object #1813

---
diff --git a/src/carquinyol/metadatastore.py b/src/carquinyol/metadatastore.py
index b75c755..5967017 100644
--- a/src/carquinyol/metadatastore.py
+++ b/src/carquinyol/metadatastore.py
@@ -4,6 +4,7 @@ from carquinyol import layoutmanager
 from carquinyol import metadatareader
 
 MAX_SIZE = 256
+_INTERNAL_KEYS = ['checksum']
 
 
 class MetadataStore(object):
@@ -14,7 +15,8 @@ class MetadataStore(object):
             os.makedirs(metadata_path)
         else:
             for key in os.listdir(metadata_path):
-                os.remove(os.path.join(metadata_path, key))
+                if key not in _INTERNAL_KEYS:
+                    os.remove(os.path.join(metadata_path, key))
 
         metadata['uid'] = uid
         for key, value in metadata.items():
--
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