Re: [fuse-devel] delta filesystem prototype

[Goswin von Brederlow <goswin-v-b@web.de>]

hooanon05@yahoo.co.jp writes:

> Goswin von Brederlow:
>> > Miklos Szeredi:
>> >> The most interesting is the directory and metadata deltas, which do
>> >> make a delta-fs like implementation much more effective and nicer as a
>> >> dumb union type filesystem.  Mind, unionfs and aufs are rapidly
>> >> acquiring non-union traits, like inode number storage, virtual hard
>> >> links (not to speak of whiteouts).  Which makes them all the more
>> >> hackish, I much prefer a conceptually clean solution.
> 	:::
>> Use a filename -> inode indirection and delta based on inode
>> numbers. Although the you also have to consider the device id in case
>> there are multiple filesystem mounted in your read-only branch. So
>> filename -> (dev, inode).
>
> Agreed.
> While Miklos seems to dislike the inum table, it is necessary I think.
>
>
> J. R. Okajima

Only if you want to fully support hardlinks. Do you know of anything
that really needs true hardlinks?

MfG
        Goswin