== sanity test 184c: Concurrent write and layout swap ==== 10:53:38 (1790693618) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 5.94722 s, 6.0 MB/s 32+0 records in 32+0 records out 33554432 bytes (34 MB, 32 MiB) copied, 5.71837 s, 5.9 MB/s ref file size: ref1(35651584), ref2(33554432) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 11.0255 s, 3.2 MB/s Copied 262144 bytes before swapping layout...