== sanity test 184c: Concurrent write and layout swap ==== 12:59:17 (1787158757) 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 5.15537 s, 7.3 MB/s 63+0 records in 63+0 records out 66060288 bytes (66 MB, 63 MiB) copied, 11.283 s, 5.9 MB/s ref file size: ref1(37748736), ref2(66060288) 2304+0 records in 2304+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 14.2673 s, 2.6 MB/s Copied 655360 bytes before swapping layout...