== sanity test 184c: Concurrent write and layout swap ==== 19:25:46 (1788218746) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 4.70892 s, 7.6 MB/s 33+0 records in 33+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 5.08905 s, 6.8 MB/s ref file size: ref1(35651584), ref2(34603008) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 10.3729 s, 3.4 MB/s Copied 475136 bytes before swapping layout...