== sanity test 77a: normal checksum read/write operation ========================================================== 10:26:15 (1790000775) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.254796 s, 32.9 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.30885 s, 6.4 MB/s