== sanity test 184c: Concurrent write and layout swap ==== 00:26:17 (1747801577) 64+0 records in 64+0 records out 67108864 bytes (67 MB) copied, 1.84205 s, 36.4 MB/s 54+0 records in 54+0 records out 56623104 bytes (57 MB) copied, 1.63016 s, 34.7 MB/s ref file size: ref1(67108864), ref2(56623104) 4096+0 records in 4096+0 records out 67108864 bytes (67 MB) copied, 3.75829 s, 17.9 MB/s Copied 1638400 bytes before swapping layout...