== sanity test 184c: Concurrent write and layout swap ==== 07:32:06 (1744889526) 46+0 records in 46+0 records out 48234496 bytes (48 MB) copied, 1.48781 s, 32.4 MB/s 64+0 records in 64+0 records out 67108864 bytes (67 MB) copied, 1.86828 s, 35.9 MB/s ref file size: ref1(48234496), ref2(67108864) 2944+0 records in 2944+0 records out 48234496 bytes (48 MB) copied, 3.19467 s, 15.1 MB/s Copied 1654784 bytes before swapping layout...