== sanity test 184c: Concurrent write and layout swap ==== 21:21:59 (1788484919) 43+0 records in 43+0 records out 45088768 bytes (45 MB, 43 MiB) copied, 6.69063 s, 6.7 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 10.0355 s, 6.9 MB/s ref file size: ref1(45088768), ref2(69206016) 2752+0 records in 2752+0 records out 45088768 bytes (45 MB, 43 MiB) copied, 9.65037 s, 4.7 MB/s Copied 819200 bytes before swapping layout...