Method SysBlockDeviceIOStat

blockdevice/stats.go:507–524

SysBlockDeviceIO returns stats for the block device io counters IO done count: /sys/block/ /device/iodone_cnt IO error count: /sys/block/ /device/ioerr_cnt.

(device string)

// IO done count: /sys/block/<disk>/device/iodone_cnt
// IO error count: /sys/block/<disk>/device/ioerr_cnt.
func (fs FS) SysBlockDeviceIOStat(device string) (IODeviceStats, error) {
	var (
		ioDeviceStats IODeviceStats
		err           error
	)
	for file, p := range map[string]*uint64{
		"iodone_cnt": &ioDeviceStats.IODoneCount,
		"ioerr_cnt":  &ioDeviceStats.IOErrCount,
	} {
		var val uint64
		val, err = util.ReadHexFromFile(fs.sys.Path(sysBlockPath, device, sysDevicePath, file))
		if err != nil {
			return IODeviceStats{}, err
		}
		*p = val
	}
	return ioDeviceStats, nil
}