== sanity test 184c: Concurrent write and layout swap ==== 19:03:08 (1746140588) 47+0 records in 47+0 records out 49283072 bytes (49 MB) copied, 5.07493 s, 9.7 MB/s 26+0 records in 26+0 records out 27262976 bytes (27 MB) copied, 2.02114 s, 13.5 MB/s ref file size: ref1(49283072), ref2(27262976) 3008+0 records in 3008+0 records out 49283072 bytes (49 MB) copied, 9.71102 s, 5.1 MB/s Copied 950272 bytes before swapping layout...