binary.LittleEndian.PutUint16(data[2:4], tierConfigVersion)

	// Marshal the tier config
	return config.MarshalMsg(data)
}

// getDriver returns a warmBackend interface object initialized with remote tier config matching tierName
func (config *TierConfigMgr) getDriver(ctx context.Context, tierName string) (d WarmBackend, err error) {
	config.Lock()
	defer config.Unlock()

	var ok bool

type jentry struct {
	ObjName   string
	VersionID string
	TierName  string
}

func deleteObjectFromRemoteTier(ctx context.Context, objName, rvID, tierName string) error {
	w, err := globalTierConfigMgr.getDriver(ctx, tierName)
	if err != nil {
		return err
	}
	return w.Remove(ctx, objName, remoteVersionID(rvID))

func getTransitionedObjectReader(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, oi ObjectInfo, opts ObjectOptions) (gr *GetObjectReader, err error) {
	tgtClient, err := globalTierConfigMgr.getDriver(ctx, oi.TransitionedObject.Tier)
	if err != nil {
		return nil, fmt.Errorf("transition storage class not configured: %w", err)
	}

	fn, off, length, err := NewGetObjectReader(rs, oi, opts)
	if err != nil {

		}
	}
	if done {
		os.Remove(jd.ReadOnlyPath())
	}
}

func deleteObjectFromRemoteTier(ctx context.Context, objName, rvID, tierName string) error {
	w, err := globalTierConfigMgr.getDriver(tierName)
	if err != nil {
		return err
	}
	err = w.Remove(ctx, objName, remoteVersionID(rvID))
	if err != nil {
		return err
	}
	return nil
}

}

// TransitionObject - transition object content to target tier.
func (er erasureObjects) TransitionObject(ctx context.Context, bucket, object string, opts ObjectOptions) error {
	tgtClient, err := globalTierConfigMgr.getDriver(ctx, opts.Transition.Tier)
	if err != nil {
		return err
	}

	// Acquire write lock before starting to transition the object.
	lk := er.NewNSLock(bucket, object)