Function parseBtreeWriteStats

bcachefs/get.go:369–408

(path string)

}

func parseBtreeWriteStats(path string) (map[string]BtreeWriteStats, error) {
	file, err := openIfExists(path)
	if err != nil {
		return nil, err
	}
	if file == nil {
		return map[string]BtreeWriteStats{}, nil
	}
	defer file.Close()

	stats := make(map[string]BtreeWriteStats)
	scanner := bufio.NewScanner(file)
	scanner.Buffer(make([]byte, 0, 64*1024), 1024*1024)
	lineNum := 0
	for scanner.Scan() {
		lineNum++
		line := scanner.Text()
		if lineNum == 1 {
			continue
		}
		fields := strings.Fields(line)
		if len(fields) < 3 {
			continue
		}
		writeType := strings.TrimSuffix(fields[0], ":")
		count, err := strconv.ParseUint(fields[1], 10, 64)
		if err != nil {
			return nil, err
		}
		size, err := parseHumanReadableBytes(fields[2])
		if err != nil {
			return nil, err
		}
		stats[writeType] = BtreeWriteStats{Count: count, SizeBytes: size}
	}
	if err := scanner.Err(); err != nil {
		return nil, err
	}
	return stats, nil
}

func parseDevices(fsPath string) (map[string]*DeviceStats, error) {
	entries, err := os.ReadDir(fsPath)