== sanity test 184c: Concurrent write and layout swap ==== 06:56:18 (1744541778) 36+0 records in 36+0 records out 37748736 bytes (38 MB) copied, 1.13845 s, 33.2 MB/s 56+0 records in 56+0 records out 58720256 bytes (59 MB) copied, 1.662 s, 35.3 MB/s ref file size: ref1(37748736), ref2(58720256) 2304+0 records in 2304+0 records out 37748736 bytes (38 MB) copied, 2.39454 s, 15.8 MB/s Copied 2097152 bytes before swapping layout...