== sanity test 184c: Concurrent write and layout swap ==== 01:55:27 (1786082127) 31+0 records in 31+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 4.22636 s, 7.7 MB/s 22+0 records in 22+0 records out 23068672 bytes (23 MB, 22 MiB) copied, 2.79817 s, 8.2 MB/s ref file size: ref1(32505856), ref2(23068672) 1984+0 records in 1984+0 records out 32505856 bytes (33 MB, 31 MiB) copied, 8.46161 s, 3.8 MB/s Copied 557056 bytes before swapping layout...