== sanity test 77a: normal checksum read/write operation ========================================================== 10:52:12 (1787842332) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.292788 s, 28.7 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.059 s, 7.9 MB/s