// healDiskFormat - heals format.json, return value indicates if a
// failure error occurred.
func healDiskFormat(ctx context.Context, objAPI ObjectLayer, opts madmin.HealOpts) (madmin.HealResultItem, error) {
	res, err := objAPI.HealFormat(ctx, opts.DryRun)

	// return any error, ignore error returned when disks have
	// already healed.
	if err != nil && err != errNoHealRequired {
		return madmin.HealResultItem{}, err
	}

	return res, nil