code: func NewFsInfoFailedError(err error) *MetricsError {
  	return &MetricsError{
  		Code: ErrCodeFsInfoFailed,
  		Msg:  fmt.Sprintf("Failed to get FsInfo due to error %v", err),
  	}
  }
docs: // NewFsInfoFailedError creates a new MetricsError with code FsInfoFailed.