== sanity test 184c: Concurrent write and layout swap ==== 06:01:36 (1786960896) 23+0 records in 23+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 3.71283 s, 6.5 MB/s 60+0 records in 60+0 records out 62914560 bytes (63 MB, 60 MiB) copied, 10.6837 s, 5.9 MB/s ref file size: ref1(24117248), ref2(62914560) 1472+0 records in 1472+0 records out 24117248 bytes (24 MB, 23 MiB) copied, 7.36803 s, 3.3 MB/s Copied 622592 bytes before swapping layout...