test_storage.py: leave at least 512 MiB free when running test_large_share. refs...

diff --git a/src/allmydata/test/test_storage.py b/src/allmydata/test/test_storage.py
index 1c07fccfc39f2000a081b50aafcc284f18f88ef5..c9e0ae25f6f2a561562418e11ff5ca3f4e2b3b58 100644 (file)
--- a/src/allmydata/test/test_storage.py
+++ b/src/allmydata/test/test_storage.py
@@ -267,7 +267,7 @@ class Server(unittest.TestCase):
         if 'cygwin' in syslow or 'windows' in syslow or 'darwin' in syslow:
             raise unittest.SkipTest("If your filesystem doesn't support efficient sparse files then it is very expensive (Mac OS X and Windows don't support efficient sparse files).")
 
-        avail = fileutil.get_available_space('.', 2**14)
+        avail = fileutil.get_available_space('.', 512*2**20)
         if avail <= 4*2**30:
             raise unittest.SkipTest("This test will spuriously fail if you have less than 4 GiB free on your filesystem.")