== sanity test 184c: Concurrent write and layout swap ==== 06:05:52 (1787393152) 69+0 records in 69+0 records out 72351744 bytes (72 MB, 69 MiB) copied, 10.5742 s, 6.8 MB/s 62+0 records in 62+0 records out 65011712 bytes (65 MB, 62 MiB) copied, 9.22258 s, 7.0 MB/s ref file size: ref1(72351744), ref2(65011712) 4416+0 records in 4416+0 records out 72351744 bytes (72 MB, 69 MiB) copied, 24.7829 s, 2.9 MB/s Copied 606208 bytes before swapping layout...