change default number of volumes to 7, so that the first volume growth

would not fail.

go/weed/volume.go

@@ -35,7 +35,7 @@ var (
 	publicUrl      = cmdVolume.Flag.String("publicUrl", "", "Publicly accessible <ip|server_name>:<port>")
 	masterNode     = cmdVolume.Flag.String("mserver", "localhost:9333", "master server location")
 	vpulse         = cmdVolume.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats, must be smaller than the master's setting")
-	maxVolumeCount = cmdVolume.Flag.Int("max", 5, "maximum number of volumes")
+	maxVolumeCount = cmdVolume.Flag.Int("max", 7, "maximum number of volumes")
 	vReadTimeout   = cmdVolume.Flag.Int("readTimeout", 3, "connection read timeout in seconds")
 	vMaxCpu        = cmdVolume.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
 	dataCenter     = cmdVolume.Flag.String("dataCenter", "", "current volume server's data center name")
@@ -165,6 +165,10 @@ func GetOrHeadHandler(w http.ResponseWriter, r *http.Request, isGetMethod bool)
 	if n.NameSize > 0 {
 		w.Header().Set("Content-Disposition", "filename="+fileNameEscaper.Replace(string(n.Name)))
 	}
+	if n.LastModified != 0 {
+		println("file time is", n.LastModified)
+		w.Header().Set("Last-Modified", time.Unix(int64(n.LastModified), 0).Format(http.TimeFormat))
+	}
 	if ext != ".gz" {
 		if n.IsGzipped() {
 			if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {