== sanity test 184c: Concurrent write and layout swap ==== 15:33:51 (1788809631) 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 2.07986 s, 18.1 MB/s 47+0 records in 47+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 2.92356 s, 16.9 MB/s ref file size: ref1(37748736), ref2(49283072) 2304+0 records in 2304+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 4.24155 s, 8.9 MB/s Copied 1327104 bytes before swapping layout...