 /**
   * Get a block pool storage root based on data node storage root
   * @param bpID block pool ID
   * @param dnCurDir data node storage root directory
   * @return root directory for block pool storage
   */
 /**
   * Get a block pool storage root based on data node storage root
   * @param bpID block pool ID
   * @param dnCurDir data node storage root directory
   * @return root directory for block pool storage
   */ | BlockPoolSliceStorage.java