== sanity test 77a: normal checksum read/write operation ========================================================== 06:02:01 (1773655321) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.435947 s, 19.2 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.53865 s, 5.5 MB/s