countNoHeal++
		}
		r.DiskCount += result.DiskCount
		r.SetCount += result.SetCount
		r.Before.Drives = append(r.Before.Drives, result.Before.Drives...)
		r.After.Drives = append(r.After.Drives, result.After.Drives...)
	}

	// No heal returned by all serverPools, return errNoHealRequired
	if countNoHeal == len(z.serverPools) {
		return r, errNoHealRequired
	}

	return r, nil

	if accessKeyID == "" || secretAccessKey == "" {
		return errors.New("Presign cannot be generated without access and secret keys")
	}

	// FIXME: Remove following portion of code after fixing a bug in minio-go preSignV2.

	d := UTCNow()
	// Find epoch expires when the request will expire.
	epochExpires := d.Unix() + expires

	// Add expires header if not present.

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseMissingIdentAfterAt: {
		Code:           "ParseMissingIdentAfterAt",
		Description:    "Did not find the expected identifier after the @ symbol in the SQL expression.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseUnexpectedOperator: {
		Code:           "ParseUnexpectedOperator",

			// skip all objects that are created before the specified time.
			return true
		}

		if !r.Flags.Filter.CreatedBefore.IsZero() && r.Flags.Filter.CreatedBefore.After(oi.ModTime) {
			// skip all objects that are created after the specified time.
			return true
		}

		if hasTags {
			// Only parse object tags if tags filter is specified.
			tagMap := map[string]string{}
			tagStr := oi.UserTags