== sanity test 184c: Concurrent write and layout swap ==== 14:35:19 (1777574119) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 1.89154 s, 18.8 MB/s 51+0 records in 51+0 records out 53477376 bytes (53 MB, 51 MiB) copied, 2.791 s, 19.2 MB/s ref file size: ref1(35651584), ref2(53477376) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 3.64362 s, 9.8 MB/s Copied 1212416 bytes before swapping layout...