== sanity test 184c: Concurrent write and layout swap ==== 21:13:26 (1786842806) 49+0 records in 49+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 2.4954 s, 20.6 MB/s 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 1.02908 s, 21.4 MB/s ref file size: ref1(51380224), ref2(22020096) 3136+0 records in 3136+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 4.53867 s, 11.3 MB/s Copied 1359872 bytes before swapping layout...