== sanity test 184c: Concurrent write and layout swap ==== 12:47:00 (1787590020) 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 4.45059 s, 7.3 MB/s 57+0 records in 57+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 8.54971 s, 7.0 MB/s ref file size: ref1(32505856), ref2(59768832) 1984+0 records in 1984+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 8.55496 s, 3.8 MB/s Copied 655360 bytes before swapping layout...