func ListZpools() ([]*Zpool, error) {
	args := []string{"list", "-Ho", "name"}
	out, err := zpool(args...)
	if err != nil {
		return nil, err
	}

	var pools []*Zpool

	for _, line := range out {
		z, err := GetZpool(line[0])
		if err != nil {
			return nil, err
		}
		pools = append(pools, z)
	}
	return pools, nil
}
func ListZpools() ([]*Zpool, error) {
	args := []string{"list", "-Ho", "name"}
	out, err := zpool(args...)
	if err != nil {
		return nil, err
	}

	var pools []*Zpool

	for _, line := range out {
		z, err := GetZpool(line[0])
		if err != nil {
			return nil, err
		}
		pools = append(pools, z)
	}
	return pools, nil
}
// ListZpools list all ZFS zpools accessible on the current system.