== sanity test 184c: Concurrent write and layout swap ==== 11:42:30 (1747410150) 66+0 records in 66+0 records out 69206016 bytes (69 MB) copied, 0.903723 s, 76.6 MB/s 69+0 records in 69+0 records out 72351744 bytes (72 MB) copied, 0.917431 s, 78.9 MB/s ref file size: ref1(69206016), ref2(72351744) 4224+0 records in 4224+0 records out 69206016 bytes (69 MB) copied, 0.95326 s, 72.6 MB/s Copied 8159232 bytes before swapping layout...