diff --git a/README.md b/README.md
index 014649e..49a1f05 100644
--- a/README.md
+++ b/README.md
@@ -178,6 +178,8 @@ func main() {
 # 重要说明
 ## 在issue中有很多实际使用的问题及回答（很多已关闭，请查看已关闭的issue）
 
+## 项目从v1.1.8开始进入稳定状态
+
 
 # Q&A
 - 在微信讨论群中大家都问到go-fastdfs性能怎样？
@@ -326,7 +328,7 @@ sts["Fs.ErrorSetSize"] = this.errorset.Cardinality()  这个会导致内存增
 ```
 
 
-- 如何编译？
+- 如何编译(go1.9.2+)？
 ```
 git clone https://github.com/sjqzhang/go-fastdfs.git
 cd go-fastdfs
@@ -381,13 +383,17 @@ culr -C - http://10.1.5.9:8080/group1/default/20190128/16/10/2G
 
 - Docker如何部署？
 ```
-
-
 步骤：
-一、构建镜像
-docker build . -t fastdfs
-二、运行容器（使用环境变量 GO_FASTDFS_DIR 指向存储目录。）
-docker run --name fastdfs -v ~:/data/fastdfs -e GO_FASTDFS_DIR=/data/fastdfs fastdfs 
+方式一、
+    一、构建镜像
+    docker build . -t fastdfs
+    二、运行容器（使用环境变量 GO_FASTDFS_DIR 指向存储目录。）
+    docker run --name fastdfs -v /data/fastdfs_data:/data -e GO_FASTDFS_DIR=/data fastdfs 
+方式二、
+    一、拉取镜像
+    docker pull sjqzhang/go-fastdfs
+    二、运行容器
+    docker run --name fastdfs -v /data/fastdfs_data:/data -e GO_FASTDFS_DIR=/data fastdfs 
 
 ```
 
diff --git a/fileserver.go b/fileserver.go
index cf4f919..d3c4006 100644
--- a/fileserver.go
+++ b/fileserver.go
@@ -1114,7 +1114,12 @@ func (this *Server) DownloadFromPeer(peer string, fileInfo *FileInfo) {
 		data     []byte
 	)
 
-	if this.CheckFileExistByMd5(fileInfo.Md5, fileInfo) {
+	filename = fileInfo.Name
+	if fileInfo.ReName != "" {
+		filename = fileInfo.ReName
+	}
+
+	if this.util.FileExists(DOCKER_DIR+fileInfo.Path+"/"+filename) && this.CheckFileExistByMd5(fileInfo.Md5, fileInfo) {
 		return
 	}
 
@@ -1122,11 +1127,6 @@ func (this *Server) DownloadFromPeer(peer string, fileInfo *FileInfo) {
 		os.MkdirAll(DOCKER_DIR+fileInfo.Path, 0775)
 	}
 
-	filename = fileInfo.Name
-	if fileInfo.ReName != "" {
-		filename = fileInfo.ReName
-	}
-
 	//fmt.Println("downloadFromPeer",fileInfo)
 	p := strings.Replace(fileInfo.Path, STORE_DIR_NAME+"/", "", 1)
 
@@ -1343,7 +1343,8 @@ func (this *Server) Download(w http.ResponseWriter, r *http.Request) {
 		}
 
 		if info, err = os.Stat(fullpath); err != nil {
-			log.Error(err)
+			notFound = true
+			goto NotFound // if return can't not repair file
 			return
 		}
 
@@ -1365,8 +1366,8 @@ func (this *Server) Download(w http.ResponseWriter, r *http.Request) {
 
 		}
 	}
-
-	if info, err = os.Stat(fullpath); err != nil {
+NotFound:
+	if info, err = os.Stat(fullpath); err != nil || info.Size() == 0 {
 		log.Error(err)
 		if isSmallFile && notFound {
 			pathMd5 = this.util.MD5(smallPath)
@@ -1379,7 +1380,6 @@ func (this *Server) Download(w http.ResponseWriter, r *http.Request) {
 				log.Error(err)
 				continue
 			}
-
 			if fileInfo.Md5 != "" {
 
 				if Config().DownloadUseToken && !isPeer {
@@ -1388,9 +1388,7 @@ func (this *Server) Download(w http.ResponseWriter, r *http.Request) {
 						return
 					}
 				}
-
 				go this.DownloadFromPeer(peer, fileInfo)
-
 				http.Redirect(w, r, peer+r.RequestURI, 302)
 				return
 			}
@@ -2305,10 +2303,10 @@ func (this *Server) RemoveFile(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if fileInfo.Path != "" && this.util.FileExists(fpath) {
-		if err=this.RemoveKeyFromLevelDB(fileInfo.Md5);err!=nil {
+		if err = this.RemoveKeyFromLevelDB(fileInfo.Md5); err != nil {
 			log.Error(err)
 		}
-		if err=this.RemoveKeyFromLevelDB(md5path);err!=nil{
+		if err = this.RemoveKeyFromLevelDB(md5path); err != nil {
 			log.Error(err)
 		}
 		if err = os.Remove(fpath); err != nil {
@@ -2668,8 +2666,10 @@ func (this *Server) SaveSmallFile(fileInfo *FileInfo) (error) {
 		largeDir string
 		destPath string
 		reName   string
+		fileExt  string
 	)
 	filename = fileInfo.Name
+	fileExt = path.Ext(filename)
 	if fileInfo.ReName != "" {
 		filename = fileInfo.ReName
 	}
@@ -2711,7 +2711,8 @@ func (this *Server) SaveSmallFile(fileInfo *FileInfo) (error) {
 		}
 		fileInfo.OffSet = fileInfo.OffSet - 1 //minus 1 byte
 		fileInfo.Size = fileInfo.Size + 1
-		fileInfo.ReName = fmt.Sprintf("%s,%d,%d", reName, fileInfo.OffSet, fileInfo.Size)
+
+		fileInfo.ReName = fmt.Sprintf("%s,%d,%d,%s", reName, fileInfo.OffSet, fileInfo.Size, fileExt)
 
 		if _, err = io.Copy(desFile, srcFile); err != nil {
 			return err
@@ -3581,7 +3582,7 @@ func (this *Server) initTus() {
 	}
 	if fileLog, err = os.OpenFile(LOG_DIR+"/tusd.log", os.O_CREATE|os.O_RDWR, 0666); err != nil {
 		log.Error(err)
-		fmt.Println(err)
+
 		panic("initTus")
 	}