== sanity test 184c: Concurrent write and layout swap ==== 22:01:22 (1787623282) 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 6.47391 s, 4.5 MB/s 37+0 records in 37+0 records out 38797312 bytes (39 MB, 37 MiB) copied, 8.56114 s, 4.5 MB/s ref file size: ref1(29360128), ref2(38797312) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 6.95039 s, 4.2 MB/s Copied 442368 bytes before swapping layout...