From 7e3c04cae6be4ff4b0e5c016f656650b0cf73ed3 Mon Sep 17 00:00:00 2001
From: Steve Slaven <bpk@hoopajoo.net>
Date: Fri, 7 Aug 2009 16:36:35 -0700
Subject: Update chunk references on chunk flush too, so we don't lose
 partially used chunks that never get locked or unlocked because we haven't
 sync'd the whole file yet


diff --git a/FuseArchive/ChunkFile.py b/FuseArchive/ChunkFile.py
index b9f114f..6a0ea34 100644
--- a/FuseArchive/ChunkFile.py
+++ b/FuseArchive/ChunkFile.py
@@ -230,6 +230,8 @@ class ChunkFile(object):
                 logging.debug( "Key was %s" % key )
                 self.dirty_chunks = 0
 
+        self._update_chunk_references()
+
     def read(self, length, offset):
         logging.debug( "Reading from %s offset: %d (0x%x) length: %d (0x%d)" %
             ( self.orig_path, offset, offset, length, length ) )
@@ -435,43 +437,7 @@ class ChunkFile(object):
                 lock_chunk( key )
                 self.original_key = key
 
-            # Now update our chunk ref counts
-            logging.debug( "Updating chunk references" )
-            for index in range( len( self.chunks ) ):
-                # Is this chunk changed from what was here before?
-                oldkey = None
-                key = self.chunks[ index ]
-
-                changed = False
-                # Is the old chunks at least this big?
-                if index >= len( self.original_chunks ):
-                    logging.debug( "No old chunk at this spot, changed for sure" )
-                    changed = True
-                else:
-                    oldkey = self.original_chunks[ index ]
-                    if oldkey != key:
-                        logging.debug( "Key has changed at index %d" % index )
-                        changed = True
-                        logging.debug( "%s is now %s" % (oldkey, key) )
-
-                if changed:
-                    logging.debug( "Chunk at index %d has changed" % index )
-                    if oldkey != None:
-                        unlock_chunk( oldkey )
-
-                    lock_chunk( key )
-
-            # Free any unused chunks because of ftruncate
-            logging.debug( "Freeing chunks beyond our new chunk count" )
-            index = len( self.chunks )
-            while index < len( self.original_chunks ):
-                logging.debug( "Unlocking chunk at index %d" % index )
-                unlock_chunk( self.original_chunks[ index ] )
-                index += 1
-
-            # Update our original_chunks since we've locked/unlocked some
-            # things
-            self.original_chunks = copy.deepcopy( self.chunks )
+            self._update_chunk_references()
 
             # Not dirty anymore
             if self.orig_path in dirty_cache:
@@ -481,6 +447,47 @@ class ChunkFile(object):
         logging.debug( "_fflush exit" )
         return 1
 
+
+    def _update_chunk_references(self):
+        # Now update our chunk ref counts
+        logging.debug( "Updating chunk references" )
+        for index in range( len( self.chunks ) ):
+            # Is this chunk changed from what was here before?
+            oldkey = None
+            key = self.chunks[ index ]
+
+            changed = False
+            # Is the old chunks at least this big?
+            if index >= len( self.original_chunks ):
+                logging.debug( "No old chunk at this spot, changed for sure" )
+                changed = True
+            else:
+                oldkey = self.original_chunks[ index ]
+                if oldkey != key:
+                    logging.debug( "Key has changed at index %d" % index )
+                    changed = True
+                    logging.debug( "%s is now %s" % (oldkey, key) )
+
+            if changed:
+                logging.debug( "Chunk at index %d has changed" % index )
+                if oldkey != None:
+                    unlock_chunk( oldkey )
+
+                lock_chunk( key )
+
+        # Free any unused chunks because of ftruncate
+        logging.debug( "Freeing chunks beyond our new chunk count" )
+        index = len( self.chunks )
+        while index < len( self.original_chunks ):
+            logging.debug( "Unlocking chunk at index %d" % index )
+            unlock_chunk( self.original_chunks[ index ] )
+            index += 1
+
+        # Update our original_chunks since we've locked/unlocked some
+        # things
+        self.original_chunks = copy.deepcopy( self.chunks )
+
+
     def pre_unlink(self):
         # Release all our blocks and our main file key
         logging.debug( "Unlocking all our chunks for unlink" )
-- 
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