== sanity test 77a: normal checksum read/write operation ========================================================== 07:41:50 (1787830910) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.271204 s, 30.9 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.24629 s, 6.7 MB/s