== sanity test 184c: Concurrent write and layout swap ==== 13:31:15 (1736361075) 28+0 records in 28+0 records out 29360128 bytes (29 MB) copied, 0.375268 s, 78.2 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB) copied, 0.745159 s, 81.6 MB/s ref file size: ref1(29360128), ref2(60817408) 1792+0 records in 1792+0 records out 29360128 bytes (29 MB) copied, 0.435759 s, 67.4 MB/s Copied 9928704 bytes before swapping layout...