== sanity test 184c: Concurrent write and layout swap ==== 23:09:48 (1777432188) 33+0 records in 33+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 2.48146 s, 13.9 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB, 58 MiB) copied, 4.24341 s, 14.3 MB/s ref file size: ref1(34603008), ref2(60817408) 2112+0 records in 2112+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 4.61637 s, 7.5 MB/s Copied 1048576 bytes before swapping layout...