== sanity test 184c: Concurrent write and layout swap ==== 18:46:37 (1712270797) 66+0 records in 66+0 records out 69206016 bytes (69 MB) copied, 2.17615 s, 31.8 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB) copied, 1.19937 s, 31.5 MB/s ref file size: ref1(69206016), ref2(37748736) 4224+0 records in 4224+0 records out 69206016 bytes (69 MB) copied, 3.99206 s, 17.3 MB/s Copied 2097152 bytes before swapping layout...