Re: [patch 6/9] fuse: add export operations

[Miklos Szeredi]

> > Only finding in-memory inodes for nfs export is quite dangerous.  I
> > think it would be a much better idea to support whatever upcalls are
> > needed to find the object if it's not in memory.  Without that the nfs
> > exporting support is hardly useable.
> 
> In the ODF version of unionfs, we store the inode numbers persistently in a
> small /odf partition, exactly for that reason.

What do inode numbers index on that partition?  A path?  How do you
garbage collect unused inode numbers?

>  It'd be wonderful if there
> was kernel support for persistent inode numbers that could be used by
> various virtual filesystems.

Well, fuse for one doesn't need it because it's typically a function
that is best pushed to userspace.

Miklos
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