== sanity test 184c: Concurrent write and layout swap ==== 21:13:07 (1787361187) 38+0 records in 38+0 records out 39845888 bytes (40 MB, 38 MiB) copied, 6.52448 s, 6.1 MB/s 55+0 records in 55+0 records out 57671680 bytes (58 MB, 55 MiB) copied, 9.97822 s, 5.8 MB/s ref file size: ref1(39845888), ref2(57671680) 2432+0 records in 2432+0 records out 39845888 bytes (40 MB, 38 MiB) copied, 13.0282 s, 3.1 MB/s Copied 573440 bytes before swapping layout...