dataUsageInfo, err := scanDataFolder(ctx, disks, s.drivePath, cache, func(item scannerItem) (sizeSummary, error) {
		// Look for `xl.meta/xl.json' at the leaf.
		if !strings.HasSuffix(item.Path, SlashSeparator+xlStorageFormatFile) &&
			!strings.HasSuffix(item.Path, SlashSeparator+xlStorageFormatFileV1) {
			// if no xl.meta/xl.json found, skip the file.
			return sizeSummary{}, errSkipFile
		}