From 16183bc22bb2aed01d029de25b68285a0b575b5a Mon Sep 17 00:00:00 2001
From: Yicheng Qin <qycqycqycqycqyc@gmail.com>
Date: Tue, 24 Mar 2015 20:19:42 -0700
Subject: [PATCH] version: not return err NotExist in Detect

---
 version/version.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/version/version.go b/version/version.go
index 2d85542bb..d21139b6f 100644
--- a/version/version.go
+++ b/version/version.go
@@ -15,6 +15,7 @@
 package version
 
 import (
+	"os"
 	"path"
 
 	"github.com/coreos/etcd/pkg/fileutil"
@@ -40,6 +41,9 @@ const (
 func DetectDataDir(dirpath string) (DataDirVersion, error) {
 	names, err := fileutil.ReadDir(dirpath)
 	if err != nil {
+		if os.IsNotExist(err) {
+			err = nil
+		}
 		// Error reading the directory
 		return DataDirUnknown, err
 	}