== sanity test 184c: Concurrent write and layout swap ==== 08:39:23 (1783082363) 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 2.62833 s, 16.0 MB/s 56+0 records in 56+0 records out 58720256 bytes (59 MB, 56 MiB) copied, 3.22913 s, 18.2 MB/s ref file size: ref1(41943040), ref2(58720256) 2560+0 records in 2560+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 5.25847 s, 8.0 MB/s Copied 1196032 bytes before swapping layout...