== sanity test 184c: Concurrent write and layout swap ==== 08:16:45 (1785241005) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 4.32883 s, 8.2 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 7.08691 s, 5.3 MB/s ref file size: ref1(35651584), ref2(37748736) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 12.8723 s, 2.8 MB/s Copied 819200 bytes before swapping layout...