adjust log level

weed/util/log_buffer/log_buffer.go

@@ -166,7 +166,7 @@ func (logBuffer *LogBuffer) loopInterval() {
 		toFlush := logBuffer.copyToFlush()
 		logBuffer.Unlock()
 		if toFlush != nil {
-			glog.V(0).Infof("%s flush [%v, %v] size %d", logBuffer.name, toFlush.startTime, toFlush.stopTime, len(toFlush.data.Bytes()))
+			glog.V(4).Infof("%s flush [%v, %v] size %d", logBuffer.name, toFlush.startTime, toFlush.stopTime, len(toFlush.data.Bytes()))
 			logBuffer.flushChan <- toFlush
 		} else {
 			// glog.V(0).Infof("%s no flush", m.name)