== sanity test 184c: Concurrent write and layout swap ==== 14:59:48 (1786215588) 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 2.81178 s, 8.6 MB/s 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.46735 s, 9.2 MB/s ref file size: ref1(24117248), ref2(50331648) 1472+0 records in 1472+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 5.29879 s, 4.6 MB/s Copied 819200 bytes before swapping layout...