== sanity test 184c: Concurrent write and layout swap ==== 09:13:15 (1788613995) 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 4.36892 s, 6.5 MB/s 63+0 records in 63+0 records out 66060288 bytes (66 MB, 63 MiB) copied, 10.4028 s, 6.4 MB/s ref file size: ref1(28311552), ref2(66060288) 1728+0 records in 1728+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 7.70202 s, 3.7 MB/s Copied 475136 bytes before swapping layout...