== sanity test 184c: Concurrent write and layout swap ==== 22:13:17 (1753755197) 52+0 records in 52+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 2.5702 s, 21.2 MB/s 24+0 records in 24+0 records out 25165824 bytes (25 MB, 24 MiB) copied, 1.19318 s, 21.1 MB/s ref file size: ref1(54525952), ref2(25165824) 3328+0 records in 3328+0 records out 54525952 bytes (55 MB, 52 MiB) copied, 6.89331 s, 7.9 MB/s Copied 835584 bytes before swapping layout...