== sanity test 184c: Concurrent write and layout swap ==== 01:10:22 (1786770622) 21+0 records in 21+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 3.07947 s, 7.2 MB/s 58+0 records in 58+0 records out 60817408 bytes (61 MB, 58 MiB) copied, 10.8393 s, 5.6 MB/s ref file size: ref1(22020096), ref2(60817408) 1344+0 records in 1344+0 records out 22020096 bytes (22 MB, 21 MiB) copied, 8.3453 s, 2.6 MB/s Copied 344064 bytes before swapping layout...