== sanity test 184c: Concurrent write and layout swap ==== 01:14:11 (1789190051) 29+0 records in 29+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 1.85601 s, 16.4 MB/s 32+0 records in 32+0 records out 33554432 bytes (34 MB, 32 MiB) copied, 1.89416 s, 17.7 MB/s ref file size: ref1(30408704), ref2(33554432) 1856+0 records in 1856+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 3.04794 s, 10.0 MB/s Copied 1048576 bytes before swapping layout...