== sanity test 184c: Concurrent write and layout swap ==== 00:19:30 (1722485970) 43+0 records in 43+0 records out 45088768 bytes (45 MB) copied, 0.607731 s, 74.2 MB/s 35+0 records in 35+0 records out 36700160 bytes (37 MB) copied, 0.503265 s, 72.9 MB/s ref file size: ref1(45088768), ref2(36700160) 2752+0 records in 2752+0 records out 45088768 bytes (45 MB) copied, 0.639643 s, 70.5 MB/s Copied 8683520 bytes before swapping layout...