== sanity test 184c: Concurrent write and layout swap ==== 06:55:34 (1734436534) 31+0 records in 31+0 records out 32505856 bytes (33 MB) copied, 1.07743 s, 30.2 MB/s 69+0 records in 69+0 records out 72351744 bytes (72 MB) copied, 2.43021 s, 29.8 MB/s ref file size: ref1(32505856), ref2(72351744) 1984+0 records in 1984+0 records out 32505856 bytes (33 MB) copied, 2.80789 s, 11.6 MB/s Copied 1703936 bytes before swapping layout...