== sanity test 184c: Concurrent write and layout swap ==== 00:03:50 (1784779430) 57+0 records in 57+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 8.43528 s, 7.1 MB/s 29+0 records in 29+0 records out 30408704 bytes (30 MB, 29 MiB) copied, 4.06506 s, 7.5 MB/s ref file size: ref1(59768832), ref2(30408704) 3648+0 records in 3648+0 records out 59768832 bytes (60 MB, 57 MiB) copied, 10.1599 s, 5.9 MB/s Copied 458752 bytes before swapping layout...