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-rw-r--r--sbin/newfs/newfs.83
1 files changed, 3 insertions, 0 deletions
diff --git a/sbin/newfs/newfs.8 b/sbin/newfs/newfs.8
index b046499..9829128 100644
--- a/sbin/newfs/newfs.8
+++ b/sbin/newfs/newfs.8
@@ -111,6 +111,9 @@ for more details on how to set this option.
.It Fl b Ar block-size
The block size of the file system, in bytes. It must be a power of 2. The
default size is 8192 bytes, and the smallest allowable size is 4096 bytes.
+The optimal block:fragment ratio is 8:1.
+Other ratios are possible, but are not recommended,
+and may produce unpredictable results.
.It Fl c Ar #cylinders/group
The number of cylinders per cylinder group in a file system. The default
is to compute the maximum allowed by the other parameters. This value is
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