== sanity test 184c: Concurrent write and layout swap ==== 17:57:01 (1763506621) 45+0 records in 45+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 4.5052 s, 10.5 MB/s 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 1.97504 s, 11.1 MB/s ref file size: ref1(47185920), ref2(22020096) 2880+0 records in 2880+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 13.0718 s, 3.6 MB/s Copied 753664 bytes before swapping layout...