== sanity test 184c: Concurrent write and layout swap ==== 07:56:57 (1789041417) 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 3.49181 s, 8.1 MB/s 41+0 records in 41+0 records out 42991616 bytes (43 MB, 41 MiB) copied, 4.95209 s, 8.7 MB/s ref file size: ref1(28311552), ref2(42991616) 1728+0 records in 1728+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 5.96064 s, 4.7 MB/s Copied 622592 bytes before swapping layout...