== sanity test 184c: Concurrent write and layout swap ==== 03:03:54 (1789283034) 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 3.58176 s, 6.1 MB/s 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 3.03649 s, 6.9 MB/s ref file size: ref1(22020096), ref2(20971520) 1344+0 records in 1344+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 6.80765 s, 3.2 MB/s Copied 311296 bytes before swapping layout...