== sanity test 184c: Concurrent write and layout swap ==== 01:02:48 (1775883768) 26+0 records in 26+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 1.44065 s, 18.9 MB/s 56+0 records in 56+0 records out 58720256 bytes (59 MB, 56 MiB) copied, 3.16738 s, 18.5 MB/s ref file size: ref1(27262976), ref2(58720256) 1664+0 records in 1664+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 2.48239 s, 11.0 MB/s Copied 1392640 bytes before swapping layout...