scope := strings.Join([]string{
		currTime.Format(yyyymmdd),
		globalMinioDefaultRegion,
		string(serviceS3),
		"aws4_request",
	}, SlashSeparator)

	stringToSign := "AWS4-HMAC-SHA256" + "\n" + currTime.Format(iso8601Format) + "\n"
	stringToSign += scope + "\n"
	stringToSign += getSHA256Hash([]byte(canonicalRequest))

	date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))

		return s, err
	}

	if len(s.formatData) > 0 {
		format := &formatErasureV3{}
		json := jsoniter.ConfigCompatibleWithStandardLibrary
		if err = json.Unmarshal(s.formatData, &format); err != nil {
			return s, errCorruptedFormat
		}
		m, n, err := findDiskIndexByDiskID(format, format.Erasure.This)
		if err != nil {
			return s, err
		}
		diskID := format.Erasure.This
		if m != ep.SetIdx || n != ep.DiskIdx {

	bootstrapTraceMsg("Load IAM format file")
	var iamFmt iamFormat
	path := getIAMFormatFilePath()
	if err := store.loadIAMConfig(ctx, &iamFmt, path); err != nil && !errors.Is(err, errConfigNotFound) {
		// if IAM format
		return err
	}

	if iamFmt.Version >= iamFormatVersion1 {
		// Nothing to do.
		return nil
	}

	bootstrapTraceMsg("Write IAM format file")
	// Save iam format to version 1.

      "attributes": {
        "__attr__image_dpi": 300,
        "__attr__image_size": [
          2550,
          3299
        ],
        "__attr__image_index": 1,
        "__attr__image_format": "JPEG",
        "__attr__file_extension": "jpg",
        "__attr__data": null
      }
    },
    {
      "element_type": "__elem__merfu",
      "element_id": "d868aefe-ef9a-4be2-b9b2-c9fd89cc43eb",

		Description:    "Error parsing the X-Amz-Credential parameter; the Credential is mal-formed; expecting \"<YOUR-AKID>/YYYYMMDD/REGION/SERVICE/aws4_request\".",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrMalformedDate: {
		Code:           "MalformedDate",
		Description:    "Invalid date format header, expected to be in ISO8601, RFC1123 or RFC1123Z time format.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrMalformedPresignedDate: {

Klaus Post <******@****.***> 1713545023 -0700

		Object: object,
	}
}

func (z *erasureServerPools) getPoolAndSet(id string) (poolIdx, setIdx, diskIdx int, err error) {
	for poolIdx := range z.serverPools {
		format := z.serverPools[poolIdx].format
		for setIdx, set := range format.Erasure.Sets {
			for i, diskID := range set {
				if diskID == id {
					return poolIdx, setIdx, i, nil
				}
			}
		}
	}

	retryCtx, cancel := context.WithCancel(ctx)

	// Indicate to our routine to exit cleanly upon return.
	defer cancel()

	r := rand.New(rand.NewSource(time.Now().UnixNano()))

	// Migrate storage format if needed.
	for {
		// Migrate IAM configuration, if necessary.
		if err := saveIAMFormat(retryCtx, sys.store); err != nil {
			if configRetriableErrors(err) {

		tags["set"] = er.setIndex
		tags["pool"] = er.poolIndex
		tags["merrs"] = joinErrs(errs)
		tags["derrs"] = joinErrs(dataErrs)
		if m.IsValid() {
			tags["size"] = m.Size
			tags["mtime"] = m.ModTime.Format(http.TimeFormat)
			tags["data"] = m.Erasure.DataBlocks
			tags["parity"] = m.Erasure.ParityBlocks
		} else {
			tags["invalid-meta"] = true
			tags["data"] = er.setDriveCount - er.defaultParityCount

			objectName:     "foodir/fooobject",