== sanity test 184c: Concurrent write and layout swap ==== 03:12:52 (1783149172) 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 1.26682 s, 17.4 MB/s 20+0 records in 20+0 records out 20971520 bytes (21 MB, 20 MiB) copied, 1.12329 s, 18.7 MB/s ref file size: ref1(22020096), ref2(20971520) 1344+0 records in 1344+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 2.17903 s, 10.1 MB/s Copied 1359872 bytes before swapping layout...