== sanity test 184c: Concurrent write and layout swap ==== 21:10:01 (1786324201) 61+0 records in 61+0 records out 63963136 bytes (64 MB, 61 MiB) copied, 11.0816 s, 5.8 MB/s 39+0 records in 39+0 records out 40894464 bytes (41 MB, 39 MiB) copied, 6.31905 s, 6.5 MB/s ref file size: ref1(63963136), ref2(40894464) 3904+0 records in 3904+0 records out 63963136 bytes (64 MB, 61 MiB) copied, 19.8167 s, 3.2 MB/s Copied 655360 bytes before swapping layout...