== sanity test 184c: Concurrent write and layout swap ==== 01:50:30 (1763362230) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 2.40433 s, 14.8 MB/s 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 1.44038 s, 15.3 MB/s ref file size: ref1(35651584), ref2(22020096) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 3.97441 s, 9.0 MB/s Copied 1196032 bytes before swapping layout...