== sanity test 184c: Concurrent write and layout swap ==== 22:17:23 (1787883443) 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 10.2658 s, 6.7 MB/s 51+0 records in 51+0 records out 53477376 bytes (53 MB, 51 MiB) copied, 8.81443 s, 6.1 MB/s ref file size: ref1(69206016), ref2(53477376) 4224+0 records in 4224+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 21.094 s, 3.3 MB/s Copied 507904 bytes before swapping layout...