== sanity test 77a: normal checksum read/write operation ========================================================== 12:29:38 (1786033778) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.606321 s, 13.8 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.95069 s, 4.3 MB/s