== sanity test 184c: Concurrent write and layout swap ==== 00:54:30 (1787806470) 29+0 records in 29+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 3.55103 s, 8.6 MB/s 53+0 records in 53+0 records out 55574528 bytes (56 MB, 53 MiB) copied, 6.61583 s, 8.4 MB/s ref file size: ref1(30408704), ref2(55574528) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 7.09655 s, 4.3 MB/s Copied 540672 bytes before swapping layout...