== sanityn test 16i: read after truncate file ============ 05:57:48 (1713520668)
  ------- before truncate --------
0003220 3035 3a31 3035 3a31 2f3a 6f68 656d 732f 0003240 6e61 7469 7579 7273 3a31 622f 6e69 622f 0003260 7361 0a68 0003264
  ------- after truncate --------
0001460 7373 6468 783a 373a 3a34 3437 503a 6972 0001500 6976 656c 6567 732d 7065 7261 7461 6465 0001520 5320 4853 2f3a 6176 2f72 0001532