== sanity test 184c: Concurrent write and layout swap ==== 01:04:53 (1775883893) 29+0 records in 29+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 1.72832 s, 17.6 MB/s 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 1.98115 s, 18.0 MB/s ref file size: ref1(30408704), ref2(35651584) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 3.06292 s, 9.9 MB/s Copied 1228800 bytes before swapping layout...