== sanity test 184c: Concurrent write and layout swap ==== 00:02:31 (1786766551) 56+0 records in 56+0 records out 58720256 bytes (59 MB, 56 MiB) copied, 8.16376 s, 7.2 MB/s 69+0 records in 69+0 records out 72351744 bytes (72 MB, 69 MiB) copied, 9.10604 s, 7.9 MB/s ref file size: ref1(58720256), ref2(72351744) 3584+0 records in 3584+0 records out 58720256 bytes (59 MB, 56 MiB) copied, 18.9218 s, 3.1 MB/s Copied 622592 bytes before swapping layout...