Don't re-read the entire file in case we are extending it when we don't

have enough blocks, just start from the last block.  This increases
performace significantly for large files

1 files changed, 7 insertions, 2 deletions

diff --git a/FuseArchive/ChunkFile.py b/FuseArchive/ChunkFile.py
index e19a9fb..b9f114f 100644
--- a/FuseArchive/ChunkFile.py
+++ b/FuseArchive/ChunkFile.py
@@ -217,7 +217,7 @@ class ChunkFile(object):
             self.chunks[ self.chunk_index ] = self.chunk
 
             # Flush if we have too many dirty chunks
-            if self.dirty_chunks > dirty_flush:
+            if self.dirty_chunks >= dirty_flush:
                 self._flush_chunks()
 
     # This flushes any cached chunks
@@ -288,7 +288,12 @@ class ChunkFile(object):
         if len( self.chunks ) - 1 < index:
             logging.debug( "Not enough chunks %d, need %d, extending" %
                 ( len( self.chunks ), index + 1 ) )
-            this_index = 0
+
+            # Start with our last block, in case we need to null pad it out
+            this_index = len( self.chunks ) - 1
+            if this_index < 0:
+                this_index = 0
+
             while this_index < index:
                 self._load_chunk( this_index )
                 fill_null = self.chunk_size - len(self.chunk)