== sanity test 184c: Concurrent write and layout swap ==== 16:51:50 (1785963110) 68+0 records in 68+0 records out 71303168 bytes (71 MB, 68 MiB) copied, 12.6926 s, 5.6 MB/s 26+0 records in 26+0 records out 27262976 bytes (27 MB, 26 MiB) copied, 5.66782 s, 4.8 MB/s ref file size: ref1(71303168), ref2(27262976) 4352+0 records in 4352+0 records out 71303168 bytes (71 MB, 68 MiB) copied, 30.8368 s, 2.3 MB/s Copied 278528 bytes before swapping layout...