== sanity test 184c: Concurrent write and layout swap ==== 00:29:03 (1746073743) 67+0 records in 67+0 records out 70254592 bytes (70 MB) copied, 4.01534 s, 17.5 MB/s 27+0 records in 27+0 records out 28311552 bytes (28 MB) copied, 1.42912 s, 19.8 MB/s ref file size: ref1(70254592), ref2(28311552) 4288+0 records in 4288+0 records out 70254592 bytes (70 MB) copied, 8.48342 s, 8.3 MB/s Copied 966656 bytes before swapping layout...