== sanity test 77a: normal checksum read/write operation ========================================================== 08:15:15 (1789128915) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.273672 s, 30.7 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.01258 s, 8.3 MB/s