test_system: minor comment

diff --git a/src/allmydata/test/test_system.py b/src/allmydata/test/test_system.py
index b1fc0be65d7e097b2bf486fb795523336427a7ba..afd77d5458765bf8fa34f3bbda611404bf79672e 100644 (file)
--- a/src/allmydata/test/test_system.py
+++ b/src/allmydata/test/test_system.py
@@ -126,7 +126,9 @@ class SystemTest(unittest.TestCase):
             # we crank the max segsize down to 1024b for the duration of this
             # test, so we can exercise multiple segments. It is important
             # that this is not a multiple of the segment size, so that the
-            # tail segment is not the same length as the others.
+            # tail segment is not the same length as the others. This actualy
+            # gets rounded up to 1025 to be a multiple of the number of
+            # required shares (since we use 25 out of 100 FEC).
             options = {"max_segment_size": 1024}
             d1 = u.upload_data(DATA, options)
             return d1