== sanity test 184c: Concurrent write and layout swap ==== 19:12:04 (1736986324) 40+0 records in 40+0 records out 41943040 bytes (42 MB) copied, 0.590376 s, 71.0 MB/s 43+0 records in 43+0 records out 45088768 bytes (45 MB) copied, 0.623007 s, 72.4 MB/s ref file size: ref1(41943040), ref2(45088768) 2560+0 records in 2560+0 records out 41943040 bytes (42 MB) copied, 0.589417 s, 71.2 MB/s Copied 7782400 bytes before swapping layout...