== sanity test 184c: Concurrent write and layout swap ==== 04:21:51 (1789719711) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 2.06879 s, 17.7 MB/s 62+0 records in 62+0 records out 65011712 bytes (65 MB, 62 MiB) copied, 3.49639 s, 18.6 MB/s ref file size: ref1(36700160), ref2(65011712) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 3.33638 s, 11.0 MB/s Copied 1343488 bytes before swapping layout...