== sanity test 184c: Concurrent write and layout swap ==== 02:38:22 (1787726302) 25+0 records in 25+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 4.52126 s, 5.8 MB/s 25+0 records in 25+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 4.27508 s, 6.1 MB/s ref file size: ref1(26214400), ref2(26214400) 1600+0 records in 1600+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 7.3341 s, 3.6 MB/s Copied 409600 bytes before swapping layout...