== sanity test 184c: Concurrent write and layout swap ==== 21:59:10 (1786327150) 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 5.20539 s, 5.4 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB, 36 MiB) copied, 6.87392 s, 5.5 MB/s ref file size: ref1(28311552), ref2(37748736) 1728+0 records in 1728+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 4.81903 s, 5.9 MB/s Copied 573440 bytes before swapping layout...