public static void exportOfflineSnapshot(String dsName, File[] dsDirs, File out)
      throws Exception {
    try {
      DiskStoreImpl dsi = createForOffline(dsName, dsDirs);
      dsi.exportSnapshot(dsName, out);
    } finally {
      cleanupOffline();
    }
  }
Use this method to destroy a region in an offline disk store.

@param dsName the name of the disk store
@param dsDirs the directories that that the disk store wrote files to
@param regName the name of the region to destroy
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreImpl.java