== sanity test 184c: Concurrent write and layout swap ==== 01:42:58 (1773121378) 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 9.05246 s, 3.6 MB/s 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 9.50844 s, 3.4 MB/s ref file size: ref1(32505856), ref2(32505856) 1984+0 records in 1984+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 22.5266 s, 1.4 MB/s Copied 278528 bytes before swapping layout...