== sanity test 77a: normal checksum read/write operation ========================================================== 00:17:49 (1790741869) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.330364 s, 25.4 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.03028 s, 8.1 MB/s