== sanity test 184c: Concurrent write and layout swap ==== 16:08:26 (1787861306) 25+0 records in 25+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 4.00172 s, 6.6 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 10.1992 s, 6.8 MB/s ref file size: ref1(26214400), ref2(69206016) 1600+0 records in 1600+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 7.77001 s, 3.4 MB/s Copied 835584 bytes before swapping layout...