== sanity test 184c: Concurrent write and layout swap ==== 06:34:58 (1753439698) 47+0 records in 47+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 6.42193 s, 7.7 MB/s 30+0 records in 30+0 records out 31457280 bytes (31 MB, 30 MiB) copied, 3.71232 s, 8.5 MB/s ref file size: ref1(49283072), ref2(31457280) 3008+0 records in 3008+0 records out 49283072 bytes (49 MB, 47 MiB) copied, 10.7598 s, 4.6 MB/s Copied 475136 bytes before swapping layout...