== sanity test 184c: Concurrent write and layout swap ==== 13:08:19 (1789146499) 37+0 records in 37+0 records out 38797312 bytes (39 MB, 37 MiB) copied, 5.1012 s, 7.6 MB/s 53+0 records in 53+0 records out 55574528 bytes (56 MB, 53 MiB) copied, 7.56805 s, 7.3 MB/s ref file size: ref1(38797312), ref2(55574528) 2368+0 records in 2368+0 records out 38797312 bytes (39 MB, 37 MiB) copied, 10.9973 s, 3.5 MB/s Copied 655360 bytes before swapping layout...