== sanity test 184c: Concurrent write and layout swap ==== 01:59:31 (1790402371) 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 1.90295 s, 18.7 MB/s 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 1.05776 s, 19.8 MB/s ref file size: ref1(35651584), ref2(20971520) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 3.08687 s, 11.5 MB/s Copied 1654784 bytes before swapping layout...