> > Tobias Oberstein <[EMAIL PROTECTED]> wrote: > > > > Is there / will there be a userland possibility of fast (O(1)) file concatenation that works by FS metadata manipulation under the hood (concatenating files by rechaining pointers into blocks) instead of deep data copies in ZFS? > > Hoe do you like to do this? > There is no interface in the OS to do this...... > > Jörg
I don't see why the egg-laying, milk-giving woolly UNIX syscall pig that is ioctl() couldn't be genetically engineered to concatenate files as well ... Anyone willing to work on a ufs prototype ? I actually believe this could be done in a ~100 lines of code in ufs ... if you put in some restrictions onto the sizes of files that can be concatenated (if you don't, you'll have to copy a possibly huge number of partial block lists). cc:'ing ufs-discuss for good measure. This isn't ZFS-specific. Best regards, FrankH. _______________________________________________ ufs-discuss mailing list [email protected]
