From bcc6f91f73d30a557bed6162344ba9964ea9fee7 Mon Sep 17 00:00:00 2001
From: Will Woods <wwoods@redhat.com>
Date: Tue, 1 Nov 2011 15:58:09 -0400
Subject: [PATCH] imgutils: reduce default overhead to 128 blocks

generally we don't need ~4MB extra space.
---
 src/pylorax/imgutils.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/pylorax/imgutils.py b/src/pylorax/imgutils.py
index 04bc8696..e7526b09 100644
--- a/src/pylorax/imgutils.py
+++ b/src/pylorax/imgutils.py
@@ -140,12 +140,12 @@ def round_to_blocks(size, blocksize):
         size += blocksize - diff
     return size
 
-def estimate_size(rootdir, graft={}, fstype=None, blocksize=4096, overhead=1024):
+# TODO: move filesystem data outside this function
+def estimate_size(rootdir, graft={}, fstype=None, blocksize=4096, overhead=128):
     getsize = lambda f: os.lstat(f).st_size
     if fstype == "btrfs":
         overhead = 64*1024 # don't worry, it's all sparse
     if fstype in ("vfat", "msdos"):
-        overhead = 128
         blocksize = 2048
         getsize = lambda f: os.stat(f).st_size # no symlinks, count as copies
     total = overhead*blocksize