== sanity test 184c: Concurrent write and layout swap ==== 12:14:45 (1786032885) 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 9.78851 s, 5.1 MB/s 47+0 records in 47+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 10.7155 s, 4.6 MB/s ref file size: ref1(50331648), ref2(49283072) 3072+0 records in 3072+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 23.0129 s, 2.2 MB/s Copied 376832 bytes before swapping layout...