== sanity test 184c: Concurrent write and layout swap ==== 14:00:24 (1788544824) 45+0 records in 45+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 6.93104 s, 6.8 MB/s 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 3.9017 s, 7.3 MB/s ref file size: ref1(47185920), ref2(28311552) 2880+0 records in 2880+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 16.3102 s, 2.9 MB/s Copied 540672 bytes before swapping layout...