== sanity test 184c: Concurrent write and layout swap ==== 12:49:48 (1788886188) 33+0 records in 33+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 2.33339 s, 14.8 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 4.74474 s, 14.6 MB/s ref file size: ref1(34603008), ref2(69206016) 2112+0 records in 2112+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 3.82472 s, 9.0 MB/s Copied 1064960 bytes before swapping layout...