== sanity test 184c: Concurrent write and layout swap ==== 22:58:18 (1708833498) 28+0 records in 28+0 records out 29360128 bytes (29 MB) copied, 0.744617 s, 39.4 MB/s 25+0 records in 25+0 records out 26214400 bytes (26 MB) copied, 0.753869 s, 34.8 MB/s ref file size: ref1(29360128), ref2(26214400) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB) copied, 1.76428 s, 16.6 MB/s Copied 1900544 bytes before swapping layout...