== sanity test 184c: Concurrent write and layout swap ==== 10:49:07 (1713538147) 43+0 records in 43+0 records out 45088768 bytes (45 MB) copied, 1.23028 s, 36.6 MB/s 60+0 records in 60+0 records out 62914560 bytes (63 MB) copied, 1.53672 s, 40.9 MB/s ref file size: ref1(45088768), ref2(62914560) 2752+0 records in 2752+0 records out 45088768 bytes (45 MB) copied, 2.5771 s, 17.5 MB/s Copied 1949696 bytes before swapping layout...