== sanity test 184c: Concurrent write and layout swap ==== 08:46:58 (1786970818) 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 3.29561 s, 6.4 MB/s 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 4.02722 s, 7.0 MB/s ref file size: ref1(20971520), ref2(28311552) 1280+0 records in 1280+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 6.93876 s, 3.0 MB/s Copied 589824 bytes before swapping layout...