== sanity test 184c: Concurrent write and layout swap ==== 15:21:37 (1786044097) 28+0 records in 28+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 5.5048 s, 5.3 MB/s 26+0 records in 26+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 6.64217 s, 4.1 MB/s ref file size: ref1(29360128), ref2(27262976) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB, 28 MiB) copied, 16.0281 s, 1.8 MB/s Copied 311296 bytes before swapping layout...