== sanity test 184c: Concurrent write and layout swap ==== 14:51:58 (1789152718) 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.80863 s, 5.7 MB/s 34+0 records in 34+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 8.09246 s, 4.4 MB/s ref file size: ref1(50331648), ref2(35651584) 3072+0 records in 3072+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 15.9071 s, 3.2 MB/s Copied 409600 bytes before swapping layout...