== sanity test 184c: Concurrent write and layout swap ==== 20:43:52 (1789519432) 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.55901 s, 5.9 MB/s 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 4.90333 s, 5.8 MB/s ref file size: ref1(50331648), ref2(28311552) 3072+0 records in 3072+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 13.0546 s, 3.9 MB/s Copied 671744 bytes before swapping layout...