Transport:       globalRemoteTargetTransport,
		TrailingHeaders: true,
	}
	client, err := minio.New(u.Host, opts)
	if err != nil {
		return nil, err
	}
	client.SetAppInfo(fmt.Sprintf("minio-tier-%s", tier), ReleaseTag)

	core := &minio.Core{Client: client}
	return &warmBackendMinIO{
		warmBackendS3{
			client: client,
			core:   core,
			Bucket: conf.Bucket,

	// from latestFileInfo to get the quorum
	return dataBlocks, writeQuorum, nil
}

const (
	tierFVID     = "tier-free-versionID"
	tierFVMarker = "tier-free-marker"
	tierSkipFVID = "tier-skip-fvid"
)

// SetTierFreeVersionID sets free-version's versionID. This method is used by
// object layer to pass down a versionID to set for a free-version that may be

		return nil
	}

	if item.Policy != nil {
		meta.PolicyConfigJSON = item.Policy
		meta.PolicyConfigUpdatedAt = item.UpdatedAt
	}

	if item.Versioning != nil {
		configData, err := base64.StdEncoding.DecodeString(*item.Versioning)
		if err != nil {
			return wrapSRErr(err)
		}
		meta.VersioningConfigXML = configData
		meta.VersioningConfigUpdatedAt = item.UpdatedAt

				tier = oi.TransitionedObject.Tier
			}
			if sizeS.tiers != nil {
				if st, ok := sizeS.tiers[tier]; ok {
					sizeS.tiers[tier] = st.add(oi.tierStats())
				}
			}
		}

		// apply tier sweep action on free versions
		for _, freeVersion := range fivs.FreeVersions {
			oi := freeVersion.ToObjectInfo(item.bucket, item.objectPath(), versioned)

	case madmin.Azure:
		d, err = newWarmBackendAzure(*tier.Azure, tier.Name)
	case madmin.GCS:
		d, err = newWarmBackendGCS(*tier.GCS, tier.Name)
	case madmin.MinIO:
		d, err = newWarmBackendMinIO(*tier.MinIO, tier.Name)
	default:
		return nil, errTierTypeUnsupported
	}
	if err != nil {
		return nil, errTierTypeUnsupported
	}

	if probe {
		if err = checkWarmBackend(ctx, d); err != nil {
			return nil, err

	// TransitionedObjName is the object name on the remote tier corresponding
	// to object (version) on the source tier.
	TransitionedObjName string `msg:"to"`
	// TransitionTier is the storage class label assigned to remote tier.
	TransitionTier string `msg:"tt"`
	// TransitionVersionID stores a version ID of the object associate
	// with the remote tier.
	TransitionVersionID string `msg:"tv"`

			}
		}
		return true
	})

	if iamOS, ok := store.IAMStorageAPI.(*IAMObjectStore); ok {
		for item := range listIAMConfigItems(context.Background(), iamOS.objAPI, iamConfigPrefix+SlashSeparator+policyDBSTSUsersListKey) {
			user := strings.TrimSuffix(item.Item, ".json")
			if userPredicate != nil && !userPredicate(user) {
				continue
			}

			var mappedPolicy MappedPolicy

// 2. Replication config - is omitted from import as remote target credentials are not available from exported data for security reasons.
// 3. lifecycle config - if transition rules are present, tier name needs to have been defined.
func (a adminAPIHandlers) ImportBucketMetadataHandler(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	// Get current object layer instance.

		VersioningConfigUpdatedAt: now,
		LifecycleConfigUpdatedAt:  now,
		lifecycleConfig:           &lc,
		versioningConfig:          &vcfg,
	}
	globalBucketMetadataSys.Set(bucket, meta)
	item := scannerItem{
		Path:       obj,
		bucket:     bucket,
		prefix:     "",
		objectName: obj,
		lifeCycle:  &lc,
	}

	modTime := time.Now()
	uuids := make([]uuid.UUID, 5)
	for i := range uuids {

		Help:      "Total bytes transitioned to a tier",
		Type:      gaugeMetric,
	}
}

func getClusterTransitionedObjectsMD() MetricDescription {
	return MetricDescription{
		Namespace: clusterMetricNamespace,
		Subsystem: ilmSubsystem,
		Name:      transitionedObjects,
		Help:      "Total number of objects transitioned to a tier",
		Type:      gaugeMetric,
	}
}