== sanity test 184c: Concurrent write and layout swap ==== 01:51:51 (1746165111) 44+0 records in 44+0 records out 46137344 bytes (46 MB) copied, 3.56602 s, 12.9 MB/s 69+0 records in 69+0 records out 72351744 bytes (72 MB) copied, 4.92758 s, 14.7 MB/s ref file size: ref1(46137344), ref2(72351744) 2816+0 records in 2816+0 records out 46137344 bytes (46 MB) copied, 6.46537 s, 7.1 MB/s Copied 1277952 bytes before swapping layout...