== sanity test 184c: Concurrent write and layout swap ==== 00:17:05 (1788581825) 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 6.656 s, 5.7 MB/s 37+0 records in 37+0 records out 38797312 bytes (39 MB, 37 MiB) copied, 6.17567 s, 6.3 MB/s ref file size: ref1(37748736), ref2(38797312) 2304+0 records in 2304+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 12.3914 s, 3.0 MB/s Copied 376832 bytes before swapping layout...