== sanity test 184c: Concurrent write and layout swap ==== 04:45:24 (1788684324) 30+0 records in 30+0 records out 31457280 bytes (31 MB, 30 MiB) copied, 6.04133 s, 5.2 MB/s 22+0 records in 22+0 records out 23068672 bytes (23 MB, 22 MiB) copied, 3.1827 s, 7.2 MB/s ref file size: ref1(31457280), ref2(23068672) 1920+0 records in 1920+0 records out 31457280 bytes (31 MB, 30 MiB) copied, 8.87402 s, 3.5 MB/s Copied 491520 bytes before swapping layout...