== sanity test 184c: Concurrent write and layout swap ==== 00:19:53 (1786421993) 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 5.20239 s, 8.1 MB/s 63+0 records in 63+0 records out 66060288 bytes (66 MB, 63 MiB) copied, 9.44593 s, 7.0 MB/s ref file size: ref1(41943040), ref2(66060288) 2560+0 records in 2560+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 9.50037 s, 4.4 MB/s Copied 606208 bytes before swapping layout...