Make ChecksumTree, ChunkList, and ClientList keep just one tree.

3 files changed, 3 insertions, 0 deletions

diff --git a/obnamlib/checksumtree.py b/obnamlib/checksumtree.py
index 0b5d6d87..8f2602b8 100644
--- a/obnamlib/checksumtree.py
+++ b/obnamlib/checksumtree.py
@@ -34,6 +34,7 @@ class ChecksumTree(obnamlib.StoreTree):
         key_bytes = len(self.key('', 0, 0))
         obnamlib.StoreTree.__init__(self, fs, name, key_bytes, node_size, 
                                     upload_queue_size, lru_size)
+        self.keep_just_one_tree = True
 
     def key(self, checksum, chunk_id, client_id):
         return struct.pack(self.fmt, checksum, chunk_id, client_id)
diff --git a/obnamlib/chunklist.py b/obnamlib/chunklist.py
index 10bd7a69..883d7de9 100644
--- a/obnamlib/chunklist.py
+++ b/obnamlib/chunklist.py
@@ -36,6 +36,7 @@ class ChunkList(obnamlib.StoreTree):
         self.key_bytes = len(self.key(0))
         obnamlib.StoreTree.__init__(self, fs, 'chunklist', self.key_bytes, 
                                     node_size, upload_queue_size, lru_size)
+        self.keep_just_one_tree = True
 
     def key(self, chunk_id):
         return struct.pack('!Q', chunk_id)
diff --git a/obnamlib/clientlist.py b/obnamlib/clientlist.py
index 19e9316c..73c0f573 100644
--- a/obnamlib/clientlist.py
+++ b/obnamlib/clientlist.py
@@ -44,6 +44,7 @@ class ClientList(obnamlib.StoreTree):
         self.maxkey = self.hashkey('\xff' * self.hash_len, obnamlib.MAX_ID)
         obnamlib.StoreTree.__init__(self, fs, 'clientlist', self.key_bytes, 
                                     node_size, upload_queue_size, lru_size)
+        self.keep_just_one_tree = True
 
     def hashfunc(self, string):
         return hashlib.new('md5', string).digest()