== sanity test 184c: Concurrent write and layout swap ==== 16:57:08 (1713214628) 37+0 records in 37+0 records out 38797312 bytes (39 MB) copied, 1.11888 s, 34.7 MB/s 46+0 records in 46+0 records out 48234496 bytes (48 MB) copied, 1.50269 s, 32.1 MB/s ref file size: ref1(38797312), ref2(48234496) 2368+0 records in 2368+0 records out 38797312 bytes (39 MB) copied, 2.42775 s, 16.0 MB/s Copied 1916928 bytes before swapping layout...