== sanity test 184c: Concurrent write and layout swap ==== 22:48:53 (1713408533) 28+0 records in 28+0 records out 29360128 bytes (29 MB) copied, 0.974302 s, 30.1 MB/s 27+0 records in 27+0 records out 28311552 bytes (28 MB) copied, 0.859145 s, 33.0 MB/s ref file size: ref1(29360128), ref2(28311552) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB) copied, 1.91991 s, 15.3 MB/s Copied 1884160 bytes before swapping layout...