if !s.checkID(params.Get(storageRESTDiskID)) {
		return nil, grid.NewRemoteErr(errDiskNotFound)
	}
	info, err := s.getStorage().StatVol(context.Background(), params.Get(storageRESTVolume))
	if err != nil {
		return nil, grid.NewRemoteErr(err)
	}
	return &info, nil
}

// AppendFileHandler - append data from the request to the file specified.

	objAPI := newObjectLayerFn()
	if objAPI == nil {
		return np, grid.NewRemoteErr(errServerNotInitialized)
	}

	policyName := mss.Get(peerRESTPolicy)
	if policyName == "" {
		return np, grid.NewRemoteErr(errors.New("policyName is missing"))
	}

	if err := globalIAMSys.DeletePolicy(context.Background(), policyName, false); err != nil {
		return np, grid.NewRemoteErr(err)
	}

	return
}

					select {
					case <-ctx.Done():
						close(serverCanceled)
						return NewRemoteErr(ctx.Err())
					case resp <- []byte{1}:
						time.Sleep(10 * time.Millisecond)
					}
				}
				// Just wait for it to cancel.
				<-ctx.Done()
				close(serverCanceled)
				return NewRemoteErr(ctx.Err())
			},
			OutCapacity: 1,
			InCapacity:  inCap,
		}))
	}
	register(local)

	var opts WalkDirOptions
	_, err := opts.UnmarshalMsg(payload)
	if err != nil {
		return grid.NewRemoteErr(err)
	}

	if !s.checkID(opts.DiskID) {
		return grid.NewRemoteErr(errDiskNotFound)
	}

	ctx, cancel := context.WithCancel(ctx)
	defer cancel()
	return grid.NewRemoteErr(s.getStorage().WalkDir(ctx, opts, grid.WriterToChannel(ctx, out)))

}

// RemoteErr is a remote error type.
// Any error seen on a remote will be returned like this.
type RemoteErr string

// NewRemoteErr creates a new remote error.
// The error type is not preserved.
func NewRemoteErr(err error) *RemoteErr {
	if err == nil {
		return nil
	}
	r := RemoteErr(err.Error())
	return &r
}