== sanity test 184c: Concurrent write and layout swap ==== 10:02:54 (1724767374) 24+0 records in 24+0 records out 25165824 bytes (25 MB) copied, 0.857079 s, 29.4 MB/s 57+0 records in 57+0 records out 59768832 bytes (60 MB) copied, 2.09859 s, 28.5 MB/s ref file size: ref1(25165824), ref2(59768832) 1536+0 records in 1536+0 records out 25165824 bytes (25 MB) copied, 2.32916 s, 10.8 MB/s Copied 1523712 bytes before swapping layout...