From 86d400d6e81b9002e8f658492b3695cb3bb32f02 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 23 Aug 2013 20:25:46 +0530
Subject: [PATCH] dump and restore: retry after some time if rename fails

---
 src/calibre/db/backend.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/calibre/db/backend.py b/src/calibre/db/backend.py
index 2d6f88b405..fed5f002e8 100644
--- a/src/calibre/db/backend.py
+++ b/src/calibre/db/backend.py
@@ -1003,7 +1003,14 @@ class DB(object):
 
             self.close()
             try:
-                atomic_rename(tmpdb, self.dbpath)
+                try:
+                    atomic_rename(tmpdb, self.dbpath)
+                except:
+                    import gc
+                    for i in xrange(3):
+                        gc.collect()
+                    time.sleep(5)
+                    atomic_rename(tmpdb, self.dbpath)
             finally:
                 self.reopen()