== sanity test 77a: normal checksum read/write operation ========================================================== 07:32:41 (1787743961) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.419151 s, 20.0 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.29371 s, 6.5 MB/s