== sanity test 184c: Concurrent write and layout swap ==== 06:10:26 (1761300626) 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 1.66003 s, 17.7 MB/s 33+0 records in 33+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 1.97503 s, 17.5 MB/s ref file size: ref1(29360128), ref2(34603008) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 2.94111 s, 10.0 MB/s Copied 1343488 bytes before swapping layout...