== sanity test 184c: Concurrent write and layout swap ==== 19:15:03 (1748992503) 66+0 records in 66+0 records out 69206016 bytes (69 MB) copied, 0.822166 s, 84.2 MB/s 60+0 records in 60+0 records out 62914560 bytes (63 MB) copied, 0.738087 s, 85.2 MB/s ref file size: ref1(69206016), ref2(62914560) 4224+0 records in 4224+0 records out 69206016 bytes (69 MB) copied, 0.785279 s, 88.1 MB/s Copied 9437184 bytes before swapping layout...