== sanity test 184c: Concurrent write and layout swap ==== 06:20:49 (1787048449) 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 3.17294 s, 6.9 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 8.60075 s, 8.0 MB/s ref file size: ref1(22020096), ref2(69206016) 1344+0 records in 1344+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 5.50081 s, 4.0 MB/s Copied 704512 bytes before swapping layout...