On Fri, Aug 8, 2025 at 8:38 PM Trond Myklebust <trondmy@xxxxxxxxx> wrote: > > > > On Fri, Aug 8, 2025 at 9:47 PM Rick Macklem <rick.macklem@xxxxxxxxx> wrote: >> >> 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 >> > > Yes, but since ZFS only supports filesystem level snapshots, and not actual file cloning, does that matter to anything? ZFS now has a feature it calls block cloning, which does clone file ranges. (It was only added recently. I do not know if the Linux port uses it yet?) rick > > Cheers > Trond
