== sanity test 184c: Concurrent write and layout swap ==== 22:18:54 (1787624334) 58+0 records in 58+0 records out 60817408 bytes (61 MB, 58 MiB) copied, 14.1525 s, 4.3 MB/s 33+0 records in 33+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 4.72752 s, 7.3 MB/s ref file size: ref1(60817408), ref2(34603008) 3712+0 records in 3712+0 records out 60817408 bytes (61 MB, 58 MiB) copied, 18.9857 s, 3.2 MB/s Copied 638976 bytes before swapping layout...