== sanity test 184c: Concurrent write and layout swap ==== 22:56:37 (1746154597) 21+0 records in 21+0 records out 22020096 bytes (22 MB) copied, 1.06022 s, 20.8 MB/s 56+0 records in 56+0 records out 58720256 bytes (59 MB) copied, 3.12375 s, 18.8 MB/s ref file size: ref1(22020096), ref2(58720256) 1344+0 records in 1344+0 records out 22020096 bytes (22 MB) copied, 3.45383 s, 6.4 MB/s Copied 1343488 bytes before swapping layout...