== sanity test 184c: Concurrent write and layout swap ==== 21:41:07 (1784598067) 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 2.00945 s, 14.6 MB/s 47+0 records in 47+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 3.25301 s, 15.1 MB/s ref file size: ref1(29360128), ref2(49283072) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 3.38358 s, 8.7 MB/s Copied 1179648 bytes before swapping layout...