== sanity test 184c: Concurrent write and layout swap ==== 17:02:12 (1788642132) 24+0 records in 24+0 records out 25165824 bytes (25 MB, 24 MiB) copied, 4.47612 s, 5.6 MB/s 30+0 records in 30+0 records out 31457280 bytes (31 MB, 30 MiB) copied, 5.49056 s, 5.7 MB/s ref file size: ref1(25165824), ref2(31457280) 1536+0 records in 1536+0 records out 25165824 bytes (25 MB, 24 MiB) copied, 6.57764 s, 3.8 MB/s Copied 753664 bytes before swapping layout...