== sanity test 184c: Concurrent write and layout swap ==== 17:52:56 (1718401976) 58+0 records in 58+0 records out 60817408 bytes (61 MB) copied, 0.887145 s, 68.6 MB/s 69+0 records in 69+0 records out 72351744 bytes (72 MB) copied, 1.08015 s, 67.0 MB/s ref file size: ref1(60817408), ref2(72351744) 3712+0 records in 3712+0 records out 60817408 bytes (61 MB) copied, 0.834352 s, 72.9 MB/s Copied 8388608 bytes before swapping layout...