Hi, I'm looking at RFC7862 and I cannot find where it states if the clone_blksize attribute is per-file or per-file-system. If it is not in the RFC, which do others think it is? (Or maybe, if you have implemented CLONE, which does your implementation assume?) In case you are wondering why I am asking, it turns out that files in a ZFS volume can have different block sizes. (It can be changed after the file system is created.) Thanks, rick