== sanity test 184c: Concurrent write and layout swap ==== 20:47:58 (1786668478) 30+0 records in 30+0 records out 31457280 bytes (31 MB, 30 MiB) copied, 3.75573 s, 8.4 MB/s 32+0 records in 32+0 records out 33554432 bytes (34 MB, 32 MiB) copied, 4.61406 s, 7.3 MB/s ref file size: ref1(31457280), ref2(33554432) 1920+0 records in 1920+0 records out 31457280 bytes (31 MB, 30 MiB) copied, 9.39796 s, 3.3 MB/s Copied 409600 bytes before swapping layout...