== sanity test 184c: Concurrent write and layout swap ==== 09:45:57 (1747403157) 40+0 records in 40+0 records out 41943040 bytes (42 MB) copied, 0.565988 s, 74.1 MB/s 65+0 records in 65+0 records out 68157440 bytes (68 MB) copied, 0.906971 s, 75.1 MB/s ref file size: ref1(41943040), ref2(68157440) 2560+0 records in 2560+0 records out 41943040 bytes (42 MB) copied, 0.564754 s, 74.3 MB/s Copied 9502720 bytes before swapping layout...