if st.Mode().IsDir() {
		resp = checkPartFileNotFound
		return
	}
	// Check if shard is truncated.
	if st.Size() < expectedSize {
		resp = checkPartFileCorrupt
		return
	}
	return checkPartSuccess
}

// CheckParts check if path has necessary parts available.
func (s *xlStorage) CheckParts(ctx context.Context, volume string, path string, fi FileInfo) (*CheckPartsResp, error) {