== sanity test 184c: Concurrent write and layout swap ==== 06:00:11 (1788602411) 26+0 records in 26+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 3.42216 s, 8.0 MB/s 49+0 records in 49+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 6.52653 s, 7.9 MB/s ref file size: ref1(27262976), ref2(51380224) 1664+0 records in 1664+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 4.72132 s, 5.8 MB/s Copied 720896 bytes before swapping layout...