== sanity test 184c: Concurrent write and layout swap ==== 21:27:10 (1784424430) 47+0 records in 47+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 4.25981 s, 11.6 MB/s 62+0 records in 62+0 records out 65011712 bytes (65 MB, 62 MiB) copied, 5.41182 s, 12.0 MB/s ref file size: ref1(49283072), ref2(65011712) 3008+0 records in 3008+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 8.02722 s, 6.1 MB/s Copied 884736 bytes before swapping layout...