func (d *Driver) Status() [][2]string {
	s := d.DeviceSet.Status()

	status := [][2]string{
		{"Pool Name", s.PoolName},
		{"Pool Blocksize", fmt.Sprintf("%s", units.HumanSize(int64(s.SectorSize)))},
		{"Data file", s.DataLoopback},
		{"Metadata file", s.MetadataLoopback},
		{"Data Space Used", fmt.Sprintf("%s", units.HumanSize(int64(s.Data.Used)))},
		{"Data Space Total", fmt.Sprintf("%s", units.HumanSize(int64(s.Data.Total)))},
		{"Metadata Space Used", fmt.Sprintf("%s", units.HumanSize(int64(s.Metadata.Used)))},
		{"Metadata Space Total", fmt.Sprintf("%s", units.HumanSize(int64(s.Metadata.Total)))},
	}
	if vStr, err := devicemapper.GetLibraryVersion(); err == nil {
		status = append(status, [2]string{"Library Version", vStr})
	}
	return status
}
func (p *JSONProgress) String() string {
	var (
		width       = 200
		pbBox       string
		numbersBox  string
		timeLeftBox string
	)

	ws, err := term.GetWinsize(p.terminalFd)
	if err == nil {
		width = int(ws.Width)
	}

	if p.Current <= 0 && p.Total <= 0 {
		return ""
	}
	current := units.HumanSize(int64(p.Current))
	if p.Total <= 0 {
		return fmt.Sprintf("%8v", current)
	}
	total := units.HumanSize(int64(p.Total))
	percentage := int(float64(p.Current)/float64(p.Total)*100) / 2
	if width > 110 {
		// this number can't be negetive gh#7136
		numSpaces := 0
		if 50-percentage > 0 {
			numSpaces = 50 - percentage
		}
		pbBox = fmt.Sprintf("[%s>%s] ", strings.Repeat("=", percentage), strings.Repeat(" ", numSpaces))
	}
	numbersBox = fmt.Sprintf("%8v/%v", current, total)

	if p.Current > 0 && p.Start > 0 && percentage < 50 {
		fromStart := time.Now().UTC().Sub(time.Unix(int64(p.Start), 0))
		perEntry := fromStart / time.Duration(p.Current)
		left := time.Duration(p.Total-p.Current) * perEntry
		left = (left / time.Second) * time.Second

		if width > 50 {
			timeLeftBox = " " + left.String()
		}
	}
	return pbBox + numbersBox + timeLeftBox
}