== sanity test 184c: Concurrent write and layout swap ==== 22:55:08 (1708833308) 68+0 records in 68+0 records out 71303168 bytes (71 MB) copied, 1.63825 s, 43.5 MB/s 50+0 records in 50+0 records out 52428800 bytes (52 MB) copied, 1.19799 s, 43.8 MB/s ref file size: ref1(71303168), ref2(52428800) 4352+0 records in 4352+0 records out 71303168 bytes (71 MB) copied, 3.59221 s, 19.8 MB/s Copied 1769472 bytes before swapping layout...