== sanity test 184c: Concurrent write and layout swap ==== 14:40:42 (1788201642) 35+0 records in 35+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 5.62686 s, 6.5 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 5.1134 s, 7.4 MB/s ref file size: ref1(36700160), ref2(37748736) 2240+0 records in 2240+0 records out 36700160 bytes (37 MB, 35 MiB) copied, 10.9798 s, 3.3 MB/s Copied 704512 bytes before swapping layout...