== sanity test 184c: Concurrent write and layout swap ==== 03:51:21 (1724313081) 66+0 records in 66+0 records out 69206016 bytes (69 MB) copied, 2.78145 s, 24.9 MB/s 48+0 records in 48+0 records out 50331648 bytes (50 MB) copied, 1.9985 s, 25.2 MB/s ref file size: ref1(69206016), ref2(50331648) 4224+0 records in 4224+0 records out 69206016 bytes (69 MB) copied, 5.81787 s, 11.9 MB/s Copied 1474560 bytes before swapping layout...