volumeFolders=cmdVolume.Flag.String("dir",os.TempDir(),"directories to store data files. dir[,dir]...")
maxVolumeCounts=cmdVolume.Flag.String("max","8","maximum numbers of volumes, count[,count]... If set to zero, the limit will be auto configured.")
volumeWhiteListOption=cmdVolume.Flag.String("whiteList","","comma separated Ip addresses having write permission. No limit if empty.")
minFreeSpacePercent=cmdVolume.Flag.String("minFreeSpacePercent","0","minimum free disk space(in percents). Low disk space will mark all volumes as ReadOnly.")
minFreeSpacePercent=cmdVolume.Flag.String("minFreeSpacePercent","1","minimum free disk space (default to 1%). Low disk space will mark all volumes as ReadOnly.")