== sanity test 184c: Concurrent write and layout swap ==== 17:09:46 (1790802586) 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 5.05949 s, 5.8 MB/s 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 7.24742 s, 4.9 MB/s ref file size: ref1(29360128), ref2(35651584) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 9.19588 s, 3.2 MB/s Copied 540672 bytes before swapping layout...