== sanity test 77a: normal checksum read/write operation ========================================================== 01:50:37 (1790920237) 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.245832 s, 34.1 MB/s 8+0 records in 8+0 records out 8388608 bytes (8.4 MB, 8.0 MiB) copied, 0.784048 s, 10.7 MB/s