== sanity test 184c: Concurrent write and layout swap ==== 00:23:30 (1781238210) 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 4.24251 s, 12.9 MB/s 43+0 records in 43+0 records out 45088768 bytes (45 MB, 43 MiB) copied, 3.28147 s, 13.7 MB/s ref file size: ref1(54525952), ref2(45088768) 3328+0 records in 3328+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 7.30103 s, 7.5 MB/s Copied 753664 bytes before swapping layout...