== sanity test 184c: Concurrent write and layout swap ==== 02:16:53 (1735370213) 41+0 records in 41+0 records out 42991616 bytes (43 MB) copied, 1.18539 s, 36.3 MB/s 29+0 records in 29+0 records out 30408704 bytes (30 MB) copied, 0.915711 s, 33.2 MB/s ref file size: ref1(42991616), ref2(30408704) 2624+0 records in 2624+0 records out 42991616 bytes (43 MB) copied, 2.37975 s, 18.1 MB/s Copied 2146304 bytes before swapping layout...