== sanity test 184c: Concurrent write and layout swap ==== 12:40:14 (1787157614) 49+0 records in 49+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 9.81994 s, 5.2 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 7.36321 s, 9.4 MB/s ref file size: ref1(51380224), ref2(69206016) 3136+0 records in 3136+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 14.3491 s, 3.6 MB/s Copied 606208 bytes before swapping layout...