== sanity test 184c: Concurrent write and layout swap ==== 09:24:42 (1788269082) 27+0 records in 27+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 1.4781 s, 19.2 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB, 58 MiB) copied, 3.17118 s, 19.2 MB/s ref file size: ref1(28311552), ref2(60817408) 1728+0 records in 1728+0 records out 28311552 bytes (28 MB, 27 MiB) copied, 2.51847 s, 11.2 MB/s Copied 1343488 bytes before swapping layout...