== sanity test 184c: Concurrent write and layout swap ==== 06:08:49 (1753438129) 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 1.93561 s, 15.2 MB/s 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 2.10368 s, 14.0 MB/s ref file size: ref1(29360128), ref2(29360128) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 4.4576 s, 6.6 MB/s Copied 1048576 bytes before swapping layout...