== sanity test 184c: Concurrent write and layout swap ==== 13:09:30 (1736791770) 28+0 records in 28+0 records out 29360128 bytes (29 MB) copied, 0.903829 s, 32.5 MB/s 23+0 records in 23+0 records out 24117248 bytes (24 MB) copied, 0.818469 s, 29.5 MB/s ref file size: ref1(29360128), ref2(24117248) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB) copied, 1.72314 s, 17.0 MB/s Copied 2080768 bytes before swapping layout...