== sanity test 184c: Concurrent write and layout swap ==== 17:26:18 (1758835578) 29+0 records in 29+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 2.242 s, 13.6 MB/s 60+0 records in 60+0 records out 62914560 bytes (63 MB, 60 MiB) copied, 4.94273 s, 12.7 MB/s ref file size: ref1(30408704), ref2(62914560) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 4.44933 s, 6.8 MB/s Copied 819200 bytes before swapping layout...