== sanity test 184c: Concurrent write and layout swap ==== 11:05:07 (1787583907) 39+0 records in 39+0 records out 40894464 bytes (41 MB, 39 MiB) copied, 5.85611 s, 7.0 MB/s 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 3.51604 s, 6.9 MB/s ref file size: ref1(40894464), ref2(24117248) 2496+0 records in 2496+0 records out 40894464 bytes (41 MB, 39 MiB) copied, 11.4962 s, 3.6 MB/s Copied 720896 bytes before swapping layout...