== sanity test 184c: Concurrent write and layout swap ==== 12:05:20 (1789142720) 59+0 records in 59+0 records out 61865984 bytes (62 MB, 59 MiB) copied, 8.17387 s, 7.6 MB/s 56+0 records in 56+0 records out 58720256 bytes (59 MB, 56 MiB) copied, 7.44243 s, 7.9 MB/s ref file size: ref1(61865984), ref2(58720256) 3776+0 records in 3776+0 records out 61865984 bytes (62 MB, 59 MiB) copied, 16.4269 s, 3.8 MB/s Copied 770048 bytes before swapping layout...