== sanity test 184c: Concurrent write and layout swap ==== 13:14:26 (1736792066) 30+0 records in 30+0 records out 31457280 bytes (31 MB) copied, 0.970353 s, 32.4 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB) copied, 1.86272 s, 32.6 MB/s ref file size: ref1(31457280), ref2(60817408) 1920+0 records in 1920+0 records out 31457280 bytes (31 MB) copied, 2.409 s, 13.1 MB/s Copied 1507328 bytes before swapping layout...