== sanity test 184c: Concurrent write and layout swap ==== 02:18:19 (1781245099) 50+0 records in 50+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 9.00439 s, 5.8 MB/s 57+0 records in 57+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 10.8909 s, 5.5 MB/s ref file size: ref1(52428800), ref2(59768832) 3200+0 records in 3200+0 records out 52428800 bytes (52 MB, 50 MiB) copied, 13.0229 s, 4.0 MB/s Copied 360448 bytes before swapping layout...