== sanity test 184c: Concurrent write and layout swap ==== 09:31:55 (1787751115) 68+0 records in 68+0 records out 71303168 bytes (71 MB, 68 MiB) copied, 10.9891 s, 6.5 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 12.2166 s, 5.7 MB/s ref file size: ref1(71303168), ref2(69206016) 4352+0 records in 4352+0 records out 71303168 bytes (71 MB, 68 MiB) copied, 19.5132 s, 3.7 MB/s Copied 606208 bytes before swapping layout...