== sanity test 184c: Concurrent write and layout swap ==== 07:52:04 (1733403124) 42+0 records in 42+0 records out 44040192 bytes (44 MB) copied, 1.43148 s, 30.8 MB/s 49+0 records in 49+0 records out 51380224 bytes (51 MB) copied, 1.64472 s, 31.2 MB/s ref file size: ref1(44040192), ref2(51380224) 2688+0 records in 2688+0 records out 44040192 bytes (44 MB) copied, 2.96248 s, 14.9 MB/s Copied 2031616 bytes before swapping layout...