== sanity test 184c: Concurrent write and layout swap ==== 16:28:12 (1730579292) 66+0 records in 66+0 records out 69206016 bytes (69 MB) copied, 2.03312 s, 34.0 MB/s 68+0 records in 68+0 records out 71303168 bytes (71 MB) copied, 3.03124 s, 23.5 MB/s ref file size: ref1(69206016), ref2(71303168) 4224+0 records in 4224+0 records out 69206016 bytes (69 MB) copied, 4.76864 s, 14.5 MB/s Copied 1687552 bytes before swapping layout...