== sanity test 184c: Concurrent write and layout swap ==== 12:20:14 (1787761214) 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 2.2865 s, 16.5 MB/s 44+0 records in 44+0 records out 46137344 bytes (46 MB, 44 MiB) copied, 2.77951 s, 16.6 MB/s ref file size: ref1(37748736), ref2(46137344) 2304+0 records in 2304+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 3.74629 s, 10.1 MB/s Copied 1261568 bytes before swapping layout...