== sanity test 184c: Concurrent write and layout swap ==== 17:56:43 (1784066203) 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 3.3583 s, 6.2 MB/s 22+0 records in 22+0 records out 23068672 bytes (23 MB, 22 MiB) copied, 4.2374 s, 5.4 MB/s ref file size: ref1(20971520), ref2(23068672) 1280+0 records in 1280+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 7.147 s, 2.9 MB/s Copied 524288 bytes before swapping layout...