== sanity test 184c: Concurrent write and layout swap ==== 06:14:03 (1771413243) 57+0 records in 57+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 3.5299 s, 16.9 MB/s 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 1.83694 s, 15.4 MB/s ref file size: ref1(59768832), ref2(28311552) 3648+0 records in 3648+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 6.34592 s, 9.4 MB/s Copied 1114112 bytes before swapping layout...