== sanity test 184c: Concurrent write and layout swap ==== 15:43:43 (1715456623) 29+0 records in 29+0 records out 30408704 bytes (30 MB) copied, 0.391506 s, 77.7 MB/s 36+0 records in 36+0 records out 37748736 bytes (38 MB) copied, 0.528167 s, 71.5 MB/s ref file size: ref1(30408704), ref2(37748736) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB) copied, 0.422181 s, 72.0 MB/s Copied 8208384 bytes before swapping layout...