== sanity test 184c: Concurrent write and layout swap ==== 19:11:39 (1736986299) 28+0 records in 28+0 records out 29360128 bytes (29 MB) copied, 0.414358 s, 70.9 MB/s 54+0 records in 54+0 records out 56623104 bytes (57 MB) copied, 0.741025 s, 76.4 MB/s ref file size: ref1(29360128), ref2(56623104) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB) copied, 0.401101 s, 73.2 MB/s Copied 8585216 bytes before swapping layout...