== sanity test 184c: Concurrent write and layout swap ==== 13:50:03 (1744134603) 59+0 records in 59+0 records out 61865984 bytes (62 MB) copied, 1.61686 s, 38.3 MB/s 48+0 records in 48+0 records out 50331648 bytes (50 MB) copied, 1.33265 s, 37.8 MB/s ref file size: ref1(61865984), ref2(50331648) 3776+0 records in 3776+0 records out 61865984 bytes (62 MB) copied, 3.69407 s, 16.7 MB/s Copied 1392640 bytes before swapping layout...