== sanity test 184c: Concurrent write and layout swap ==== 03:18:24 (1713511104) 52+0 records in 52+0 records out 54525952 bytes (55 MB) copied, 0.746251 s, 73.1 MB/s 30+0 records in 30+0 records out 31457280 bytes (31 MB) copied, 0.400197 s, 78.6 MB/s ref file size: ref1(54525952), ref2(31457280) 3328+0 records in 3328+0 records out 54525952 bytes (55 MB) copied, 0.661973 s, 82.4 MB/s Copied 10043392 bytes before swapping layout...