== sanity test 184c: Concurrent write and layout swap ==== 19:44:27 (1777592667) 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 1.1226 s, 18.7 MB/s 68+0 records in 68+0 records out 71303168 bytes (71 MB, 68 MiB) copied, 3.59765 s, 19.8 MB/s ref file size: ref1(20971520), ref2(71303168) 1280+0 records in 1280+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 2.02974 s, 10.3 MB/s Copied 1310720 bytes before swapping layout...