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imgutils: reduce default overhead to 128 blocks

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generally we don't need ~4MB extra space.
This commit is contained in:
Will Woods 2011-11-01 15:58:09 -04:00
parent d7f05f1386
commit bcc6f91f73
1 changed files with 2 additions and 2 deletions
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src/pylorax/imgutils.py
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@ -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