== sanity test 184c: Concurrent write and layout swap ==== 18:12:50 (1788819170) 25+0 records in 25+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 2.7844 s, 9.4 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 9.03252 s, 7.7 MB/s ref file size: ref1(26214400), ref2(69206016) 1600+0 records in 1600+0 records out 26214400 bytes (26 MB, 25 MiB) copied, 6.07446 s, 4.3 MB/s Copied 786432 bytes before swapping layout...