== sanity test 184c: Concurrent write and layout swap ==== 01:25:12 (1744176312) 34+0 records in 34+0 records out 35651584 bytes (36 MB) copied, 1.04655 s, 34.1 MB/s 52+0 records in 52+0 records out 54525952 bytes (55 MB) copied, 1.64758 s, 33.1 MB/s ref file size: ref1(35651584), ref2(54525952) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB) copied, 2.47067 s, 14.4 MB/s Copied 1818624 bytes before swapping layout...