== sanity test 184c: Concurrent write and layout swap ==== 02:38:38 (1746081518) 34+0 records in 34+0 records out 35651584 bytes (36 MB) copied, 2.32667 s, 15.3 MB/s 52+0 records in 52+0 records out 54525952 bytes (55 MB) copied, 3.12929 s, 17.4 MB/s ref file size: ref1(35651584), ref2(54525952) 2176+0 records in 2176+0 records out 35651584 bytes (36 MB) copied, 4.63833 s, 7.7 MB/s Copied 966656 bytes before swapping layout...