== sanity test 184c: Concurrent write and layout swap ==== 09:36:23 (1788528983) 63+0 records in 63+0 records out 66060288 bytes (66 MB, 63 MiB) copied, 8.24011 s, 8.0 MB/s 24+0 records in 24+0 records out 25165824 bytes (25 MB, 24 MiB) copied, 3.05736 s, 8.2 MB/s ref file size: ref1(66060288), ref2(25165824) 4032+0 records in 4032+0 records out 66060288 bytes (66 MB, 63 MiB) copied, 16.09 s, 4.1 MB/s Copied 851968 bytes before swapping layout...