== sanity test 184c: Concurrent write and layout swap ==== 01:29:11 (1770445751) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 2.4942 s, 14.3 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 4.57659 s, 15.1 MB/s ref file size: ref1(35651584), ref2(69206016) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 4.30814 s, 8.3 MB/s Copied 983040 bytes before swapping layout...