== sanity test 184c: Concurrent write and layout swap ==== 14:03:48 (1788890628) 49+0 records in 49+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 3.00425 s, 17.1 MB/s 33+0 records in 33+0 records out 34603008 bytes (35 MB, 33 MiB) copied, 1.99475 s, 17.3 MB/s ref file size: ref1(51380224), ref2(34603008) 3136+0 records in 3136+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 4.78435 s, 10.7 MB/s Copied 1425408 bytes before swapping layout...