== sanity test 184c: Concurrent write and layout swap ==== 21:23:59 (1784597039) 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 2.1409 s, 13.7 MB/s 50+0 records in 50+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 3.57416 s, 14.7 MB/s ref file size: ref1(29360128), ref2(52428800) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 4.07265 s, 7.2 MB/s Copied 1048576 bytes before swapping layout...