== sanity test 184c: Concurrent write and layout swap ==== 16:35:26 (1788813326) 51+0 records in 51+0 records out 53477376 bytes (53 MB, 51 MiB) copied, 9.56002 s, 5.6 MB/s 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 4.13594 s, 5.3 MB/s ref file size: ref1(53477376), ref2(22020096) 3264+0 records in 3264+0 records out 53477376 bytes (53 MB, 51 MiB) copied, 18.8633 s, 2.8 MB/s Copied 278528 bytes before swapping layout...