== sanity test 184c: Concurrent write and layout swap ==== 14:51:30 (1775847090) 62+0 records in 62+0 records out 65011712 bytes (65 MB, 62 MiB) copied, 4.02955 s, 16.1 MB/s 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 1.26382 s, 16.6 MB/s ref file size: ref1(65011712), ref2(20971520) 3968+0 records in 3968+0 records out 65011712 bytes (65 MB, 62 MiB) copied, 7.81465 s, 8.3 MB/s Copied 1130496 bytes before swapping layout...