== sanity test 184c: Concurrent write and layout swap ==== 22:55:06 (1708833306) 47+0 records in 47+0 records out 49283072 bytes (49 MB) copied, 1.35549 s, 36.4 MB/s 42+0 records in 42+0 records out 44040192 bytes (44 MB) copied, 1.07897 s, 40.8 MB/s ref file size: ref1(49283072), ref2(44040192) 3008+0 records in 3008+0 records out 49283072 bytes (49 MB) copied, 2.67773 s, 18.4 MB/s Copied 2113536 bytes before swapping layout...