== sanity test 184c: Concurrent write and layout swap ==== 18:01:54 (1746136914) 20+0 records in 20+0 records out 20971520 bytes (21 MB) copied, 1.1463 s, 18.3 MB/s 33+0 records in 33+0 records out 34603008 bytes (35 MB) copied, 1.81979 s, 19.0 MB/s ref file size: ref1(20971520), ref2(34603008) 1280+0 records in 1280+0 records out 20971520 bytes (21 MB) copied, 2.4906 s, 8.4 MB/s Copied 1359872 bytes before swapping layout...