afh_get_chunk(pard->first_chunk, afhi, pard->map, &start, &size);
afh_get_chunk(pard->last_chunk, afhi, pard->map, &end, &size);
end += size;
afh_get_chunk(pard->first_chunk, afhi, pard->map, &start, &size);
afh_get_chunk(pard->last_chunk, afhi, pard->map, &end, &size);
end += size;