== sanity test 184c: Concurrent write and layout swap ==== 13:40:08 (1721410808) 42+0 records in 42+0 records out 44040192 bytes (44 MB) copied, 0.559053 s, 78.8 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB) copied, 0.771089 s, 78.9 MB/s ref file size: ref1(44040192), ref2(60817408) 2688+0 records in 2688+0 records out 44040192 bytes (44 MB) copied, 0.643374 s, 68.5 MB/s Copied 10027008 bytes before swapping layout...