== sanity test 184c: Concurrent write and layout swap ==== 15:35:03 (1789155303) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 4.7411 s, 7.5 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 5.06571 s, 7.5 MB/s ref file size: ref1(35651584), ref2(37748736) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 10.3292 s, 3.5 MB/s Copied 557056 bytes before swapping layout...