HTTPStatusCode: http.StatusBadRequest,
	},
}

// toAPIErrorCode - Converts embedded errors. Convenience
// function written to handle all cases where we have known types of
// errors returned by underlying layers.
func toAPIErrorCode(ctx context.Context, err error) (apiErr APIErrorCode) {
	if err == nil {
		return ErrNone
	}

	for index := range disks {
		metadata[index].SetTierFreeVersionID(fvID)
	}

	diskVersions := make([][]byte, len(disks))
	dataDirs := make([]string, len(disks))
	// Rename file on all underlying storage disks.
	for index := range disks {
		index := index
		g.Go(func() error {
			if disks[index] == nil {
				return errDiskNotFound
			}

			// Pick one FileInfo for a disk at index.

	data := make([]byte, 8)
	binary.LittleEndian.PutUint64(data, writeCount)
	return xattr.LSet(s.formatFile, attr, data)
}

// DiskInfo provides current information about disk space usage,
// total free inodes and underlying filesystem.
func (s *xlStorage) DiskInfo(_ context.Context, _ DiskInfoOptions) (info DiskInfo, err error) {
	info, err = s.diskInfoCache.Get()
	info.NRRequests = s.nrRequests
	info.Rotational = s.rotational

	// When the handlers get a HTTP request they use the underlying ObjectLayer to perform operations.
	globalObjLayerMutex.Lock()
	globalObjectAPI = objLayer
	globalObjLayerMutex.Unlock()

	// When cache is enabled, Put and Get operations are passed
	// to underlying cache layer to manage object layer operation and disk caching
	// operation
	api := objectAPIHandlers{

}

// getVersionID will return the versionID of the underlying version.
func (j xlMetaV2Version) getVersionID() [16]byte {
	switch j.Type {
	case ObjectType:
		return j.ObjectV2.VersionID
	case DeleteType:
		return j.DeleteMarker.VersionID
	case LegacyType:
		return [16]byte{}
	}
	return [16]byte{}
}

// ToFileInfo returns FileInfo of the underlying type.