== sanity test 184c: Concurrent write and layout swap ==== 09:57:27 (1787320647) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 4.03431 s, 9.1 MB/s 53+0 records in 53+0 records out 55574528 bytes (56 MB, 53 MiB) copied, 7.31721 s, 7.6 MB/s ref file size: ref1(36700160), ref2(55574528) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 10.5724 s, 3.5 MB/s Copied 393216 bytes before swapping layout...