== sanity test 184c: Concurrent write and layout swap ==== 23:53:50 (1788234830) 64+0 records in 64+0 records out 67108864 bytes (67 MB, 64 MiB) copied, 7.4902 s, 9.0 MB/s 50+0 records in 50+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 7.15766 s, 7.3 MB/s ref file size: ref1(67108864), ref2(52428800) 4096+0 records in 4096+0 records out 67108864 bytes (67 MB, 64 MiB) copied, 16.9594 s, 4.0 MB/s Copied 655360 bytes before swapping layout...