== sanity test 184c: Concurrent write and layout swap ==== 00:20:32 (1787718032) 56+0 records in 56+0 records out 58720256 bytes (59 MB, 56 MiB) copied, 9.09892 s, 6.5 MB/s 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 8.54696 s, 6.4 MB/s ref file size: ref1(58720256), ref2(54525952) 3584+0 records in 3584+0 records out 58720256 bytes (59 MB, 56 MiB) copied, 19.8467 s, 3.0 MB/s Copied 491520 bytes before swapping layout...