== sanity test 77a: normal checksum read/write operation ========================================================== 11:16:28 (1790954188) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.411924 s, 20.4 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.34589 s, 6.2 MB/s