== sanity test 184c: Concurrent write and layout swap ==== 22:51:21 (1745463081) 30+0 records in 30+0 records out 31457280 bytes (31 MB) copied, 1.09232 s, 28.8 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB) copied, 1.61226 s, 37.7 MB/s ref file size: ref1(31457280), ref2(60817408) 1920+0 records in 1920+0 records out 31457280 bytes (31 MB) copied, 1.98639 s, 15.8 MB/s Copied 2260992 bytes before swapping layout...