== sanity test 184c: Concurrent write and layout swap ==== 09:31:36 (1746797496) 26+0 records in 26+0 records out 27262976 bytes (27 MB) copied, 0.914985 s, 29.8 MB/s 24+0 records in 24+0 records out 25165824 bytes (25 MB) copied, 0.674841 s, 37.3 MB/s ref file size: ref1(27262976), ref2(25165824) 1664+0 records in 1664+0 records out 27262976 bytes (27 MB) copied, 1.69527 s, 16.1 MB/s Copied 1507328 bytes before swapping layout...