== sanity test 184c: Concurrent write and layout swap ==== 21:44:41 (1788659081) 26+0 records in 26+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 3.85652 s, 7.1 MB/s 69+0 records in 69+0 records out 72351744 bytes (72 MB, 69 MiB) copied, 9.91053 s, 7.3 MB/s ref file size: ref1(27262976), ref2(72351744) 1664+0 records in 1664+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 7.99519 s, 3.4 MB/s Copied 278528 bytes before swapping layout...