From 9bde067f16ec06c18b886fd1ab3e421e034b0493 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sat, 8 Sep 2012 00:05:58 -0700
Subject: [PATCH] add comments

---
 weed-fs/src/pkg/storage/volume.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed-fs/src/pkg/storage/volume.go b/weed-fs/src/pkg/storage/volume.go
index a77cdd07c..47affeca5 100644
--- a/weed-fs/src/pkg/storage/volume.go
+++ b/weed-fs/src/pkg/storage/volume.go
@@ -53,7 +53,7 @@ func (v *Volume) maybeWriteSuperBlock() {
 	stat, _ := v.dataFile.Stat()
 	if stat.Size() == 0 {
 		header := make([]byte, SuperBlockSize)
-		header[0] = 1
+		header[0] = 1 //number of copies
 		v.dataFile.Write(header)
 	}
 }