== sanity test 184c: Concurrent write and layout swap ==== 09:07:49 (1721221669) 25+0 records in 25+0 records out 26214400 bytes (26 MB) copied, 0.338937 s, 77.3 MB/s 28+0 records in 28+0 records out 29360128 bytes (29 MB) copied, 0.378513 s, 77.6 MB/s ref file size: ref1(26214400), ref2(29360128) 1600+0 records in 1600+0 records out 26214400 bytes (26 MB) copied, 0.395573 s, 66.3 MB/s Copied 7127040 bytes before swapping layout...