== sanity test 184c: Concurrent write and layout swap ==== 22:59:36 (1763092776) 29+0 records in 29+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 1.71972 s, 17.7 MB/s 50+0 records in 50+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 2.90234 s, 18.1 MB/s ref file size: ref1(30408704), ref2(52428800) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 3.22053 s, 9.4 MB/s Copied 1196032 bytes before swapping layout...