== sanity test 184c: Concurrent write and layout swap ==== 15:43:54 (1738961034) 49+0 records in 49+0 records out 51380224 bytes (51 MB) copied, 1.57419 s, 32.6 MB/s 67+0 records in 67+0 records out 70254592 bytes (70 MB) copied, 2.04256 s, 34.4 MB/s ref file size: ref1(51380224), ref2(70254592) 3136+0 records in 3136+0 records out 51380224 bytes (51 MB) copied, 3.37824 s, 15.2 MB/s Copied 2146304 bytes before swapping layout...