== sanity test 184c: Concurrent write and layout swap ==== 16:27:52 (1785961672) 64+0 records in 64+0 records out 67108864 bytes (67 MB, 64 MiB) copied, 11.7038 s, 5.7 MB/s 46+0 records in 46+0 records out 48234496 bytes (48 MB, 46 MiB) copied, 8.74308 s, 5.5 MB/s ref file size: ref1(67108864), ref2(48234496) 4096+0 records in 4096+0 records out 67108864 bytes (67 MB, 64 MiB) copied, 23.0235 s, 2.9 MB/s Copied 409600 bytes before swapping layout...