== sanity test 77a: normal checksum read/write operation ========================================================== 06:24:10 (1787739850) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.289831 s, 28.9 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.03651 s, 8.1 MB/s