== sanity test 184c: Concurrent write and layout swap ==== 11:53:15 (1788882795) 45+0 records in 45+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 2.79866 s, 16.9 MB/s 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.96001 s, 17.0 MB/s ref file size: ref1(47185920), ref2(50331648) 2880+0 records in 2880+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 4.31296 s, 10.9 MB/s Copied 1261568 bytes before swapping layout...