== sanity test 184c: Concurrent write and layout swap ==== 22:15:33 (1746152133) 29+0 records in 29+0 records out 30408704 bytes (30 MB) copied, 2.31313 s, 13.1 MB/s 56+0 records in 56+0 records out 58720256 bytes (59 MB) copied, 4.36764 s, 13.4 MB/s ref file size: ref1(30408704), ref2(58720256) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB) copied, 5.50676 s, 5.5 MB/s Copied 1097728 bytes before swapping layout...