== sanity test 184c: Concurrent write and layout swap ==== 18:06:40 (1746137200) 69+0 records in 69+0 records out 72351744 bytes (72 MB) copied, 4.81446 s, 15.0 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB) copied, 4.25117 s, 14.3 MB/s ref file size: ref1(72351744), ref2(60817408) 4416+0 records in 4416+0 records out 72351744 bytes (72 MB) copied, 9.0893 s, 8.0 MB/s Copied 1015808 bytes before swapping layout...