== sanity test 184c: Concurrent write and layout swap ==== 07:57:37 (1787486257) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 4.75848 s, 7.5 MB/s 60+0 records in 60+0 records out 62914560 bytes (63 MB, 60 MiB) copied, 7.96207 s, 7.9 MB/s ref file size: ref1(35651584), ref2(62914560) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 10.6653 s, 3.3 MB/s Copied 573440 bytes before swapping layout...