== sanity test 184c: Concurrent write and layout swap ==== 22:45:44 (1784947544) 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 2.50947 s, 15.0 MB/s 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 1.42538 s, 14.7 MB/s ref file size: ref1(37748736), ref2(20971520) 2304+0 records in 2304+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 4.98716 s, 7.6 MB/s Copied 884736 bytes before swapping layout...