== sanity test 184c: Concurrent write and layout swap ==== 07:01:00 (1788865260) 53+0 records in 53+0 records out 55574528 bytes (56 MB, 53 MiB) copied, 6.45889 s, 8.6 MB/s 49+0 records in 49+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 7.27479 s, 7.1 MB/s ref file size: ref1(55574528), ref2(51380224) 3392+0 records in 3392+0 records out 55574528 bytes (56 MB, 53 MiB) copied, 15.3478 s, 3.6 MB/s Copied 540672 bytes before swapping layout...