== sanity test 184c: Concurrent write and layout swap ==== 12:56:04 (1753376164) 45+0 records in 45+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 2.50631 s, 18.8 MB/s 32+0 records in 32+0 records out 33554432 bytes (34 MB, 32 MiB) copied, 1.76241 s, 19.0 MB/s ref file size: ref1(47185920), ref2(33554432) 2880+0 records in 2880+0 records out 47185920 bytes (47 MB, 45 MiB) copied, 4.53913 s, 10.4 MB/s Copied 671744 bytes before swapping layout...