== sanity test 184c: Concurrent write and layout swap ==== 23:55:38 (1788580538) 49+0 records in 49+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 6.8202 s, 7.5 MB/s 22+0 records in 22+0 records out 23068672 bytes (23 MB, 22 MiB) copied, 3.20827 s, 7.2 MB/s ref file size: ref1(51380224), ref2(23068672) 3136+0 records in 3136+0 records out 51380224 bytes (51 MB, 49 MiB) copied, 13.8488 s, 3.7 MB/s Copied 688128 bytes before swapping layout...