== sanity test 184c: Concurrent write and layout swap ==== 11:33:09 (1789399989) 24+0 records in 24+0 records out 25165824 bytes (25 MB, 24 MiB) copied, 3.28747 s, 7.7 MB/s 41+0 records in 41+0 records out 42991616 bytes (43 MB, 41 MiB) copied, 6.07373 s, 7.1 MB/s ref file size: ref1(25165824), ref2(42991616) 1536+0 records in 1536+0 records out 25165824 bytes (25 MB, 24 MiB) copied, 6.94009 s, 3.6 MB/s Copied 638976 bytes before swapping layout...