== sanity test 77a: normal checksum read/write operation ========================================================== 05:24:51 (1790673891) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.294679 s, 28.5 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 1.14058 s, 7.4 MB/s