== sanity test 184c: Concurrent write and layout swap ==== 21:50:51 (1712022651) 21+0 records in 21+0 records out 22020096 bytes (22 MB) copied, 1.07855 s, 20.4 MB/s 30+0 records in 30+0 records out 31457280 bytes (31 MB) copied, 1.58957 s, 19.8 MB/s ref file size: ref1(22020096), ref2(31457280) 1344+0 records in 1344+0 records out 22020096 bytes (22 MB) copied, 2.72978 s, 8.1 MB/s Copied 999424 bytes before swapping layout...