== sanity test 184c: Concurrent write and layout swap ==== 16:33:43 (1789072423) 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.16172 s, 7.0 MB/s 66+0 records in 66+0 records out 69206016 bytes (69 MB, 66 MiB) copied, 10.2998 s, 6.7 MB/s ref file size: ref1(50331648), ref2(69206016) 3072+0 records in 3072+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 14.7348 s, 3.4 MB/s Copied 622592 bytes before swapping layout...