== sanity test 184c: Concurrent write and layout swap ==== 19:03:45 (1783983825) 59+0 records in 59+0 records out 61865984 bytes (62 MB, 59 MiB) copied, 4.29581 s, 14.4 MB/s 37+0 records in 37+0 records out 38797312 bytes (39 MB, 37 MiB) copied, 3.01302 s, 12.9 MB/s ref file size: ref1(61865984), ref2(38797312) 3776+0 records in 3776+0 records out 61865984 bytes (62 MB, 59 MiB) copied, 9.72161 s, 6.4 MB/s Copied 622592 bytes before swapping layout...