t.Fatalf("case %v: error: expected: %v, got: %v", i+1, errUnformattedDisk, err)
		}
	}
}

func testStorageAPIStatInfoFile(t *testing.T, storage StorageAPI) {
	err := storage.AppendFile(t.Context(), "foo", pathJoin("myobject", xlStorageFormatFile), []byte("foo"))
	if err != nil {
		t.Fatalf("unexpected error %v", err)
	}

	testCases := []struct {
		volumeName string
		objectName string
		expectErr  bool
	}{

}

const metacachePrefix = ".metacache"

func metacachePrefixForID(bucket, id string) string {
	return pathJoin(bucketMetaPrefix, bucket, metacachePrefix, id)
}

// objectPath returns the object path of the cache.
func (o *listPathOptions) objectPath(block int) string {
	return pathJoin(metacachePrefixForID(o.Bucket, o.ID), "block-"+strconv.Itoa(block)+".s2")
}

func (o *listPathOptions) SetFilter() {

				return nil
			}
			volsInfo, err := storageDisks[index].ListDir(ctx, "", minioMetaBucket, pathJoin(bucketMetaPrefix, deletedBucketsPrefix), -1)
			if err != nil {
				if errors.Is(err, errFileNotFound) {
					return nil
				}
				return err
			}
			for _, volName := range volsInfo {
				vi, err := storageDisks[index].StatVol(ctx, pathJoin(minioMetaBucket, bucketMetaPrefix, deletedBucketsPrefix, volName))
				if err == nil {

			continue
		}
		if !strings.HasSuffix(xhost.Name, "."+domain) {
			continue
		}
		bucket := strings.TrimSuffix(xhost.Name, "."+domain)
		return SlashSeparator + pathJoin(bucket, path), nil
	}
	return path, nil
}

var regexVersion = regexp.MustCompile(`^/minio.*/(v\d+)/.*`)

func extractAPIVersion(r *http.Request) string {

	}
	metadata["version-id"] = oi.VersionID
	return madmin.TraceInfo{
		TraceType: madmin.TraceILM,
		Time:      startTime,
		NodeName:  globalLocalNodeName,
		FuncName:  event,
		Duration:  duration,
		Path:      pathJoin(oi.Bucket, oi.Name),
		Bytes:     sz,
		Error:     err,
		Message:   getSource(4),
		Custom:    metadata,
	}
}

			if mErrs[index] != nil {
				continue
			}
			index := index
			ng.Go(func() error {
				if disks[index] == nil {
					return errDiskNotFound
				}
				return disks[index].Delete(ctx, bucket, pathJoin(prefix, xlStorageFormatFile), DeleteOptions{
					Recursive: true,
				})
			}, index)
		}
		ng.Wait()
	}

	return evalDisks(disks, mErrs), err
}

		// drive timeout by default is 2 minutes, we do not need to wait longer.
		ctx, cancel := context.WithTimeout(ctx, timeout)
		defer cancel()

		r, err := store.GetObjectNInfo(ctx, minioMetaBucket, pathJoin(bucketMetaPrefix, name), nil, http.Header{}, ObjectOptions{NoLock: true})
		if err != nil {
			switch err.(type) {
			case ObjectNotFound, BucketNotFound:

//     hang-around in-case we need some form of recovery.
type RenameDataResp struct {
	Sign       []byte `msg:"s"`
	OldDataDir string `msg:"od"` // contains '<uuid>', it is designed to be passed as value to Delete(bucket, pathJoin(object, dataDir))
}

const (
	checkPartUnknown int = iota

	// Changing the order can cause a data loss
	// when running two nodes with incompatible versions
	checkPartSuccess
	checkPartDiskNotFound

				// Load updated bucket metadata into memory.
				globalNotificationSys.LoadBucketMetadata(GlobalContext, bucket)

				// Make sure to add Location information here only for bucket
				w.Header().Set(xhttp.Location, pathJoin(SlashSeparator, bucket))

				writeSuccessResponseHeadersOnly(w)

				sendEvent(eventArgs{
					EventName:    event.BucketCreated,
					BucketName:   bucket,
					ReqParams:    extractReqParams(r),

		bucketQuotaConfigFile,
		objectLockConfig,
		bucketVersioningConfig,
		bucketReplicationConfig,
		bucketTargetsFile,
	}
	for _, bi := range buckets {
		for _, cfgFile := range cfgFiles {
			cfgPath := pathJoin(bi.Name, cfgFile)
			bucket := bi.Name
			switch cfgFile {
			case bucketPolicyConfig:
				config, _, err := globalBucketMetadataSys.GetBucketPolicy(bucket)
				if err != nil {