== sanity test 184c: Concurrent write and layout swap ==== 05:25:17 (1786440317) 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 4.26109 s, 6.6 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 5.68686 s, 6.6 MB/s ref file size: ref1(28311552), ref2(37748736) 1728+0 records in 1728+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 7.42101 s, 3.8 MB/s Copied 638976 bytes before swapping layout...