Re: UUIDs (and devfs and major/minor numbers)
Richard Gooch (rgooch@atnf.csiro.au)
Fri, 18 Jun 1999 18:11:07 +1000
H. Peter Anvin writes:
> Richard Gooch wrote:
> >
> > H. Peter Anvin writes:
> > > Dan Hollis wrote:
> > > > 1) you can also symlink devfs.
> > > > 2) devfs still has permissions.
> > >
> > > Yes, and they go away every time, completely nullifying the utility.
> > > In short, YES YOU CAN DO IT. It's no longer a clean solution, but
> > > nothing but a gross hack.
> >
> > It's completely untrue that persistence for devfs is a gross hack. It
> > is true that the current user space scheme (using tar) is a hack. And
> > I've had plans right from the start to address that. But that is a
> > user space issue and shouldn't be held against devfs.
> >
> > With devfsd, I have a very nice way of implementing persistence. I can
> > support the existing semantics, where a sysadmin goes in and manually
> > changes things, and I already support a more powerful scheme where
> > groups of device entries are "saved".
>
> In other words, you can implement what traditional filesystems can
> do. We know that. It also means devfs is superfluous. You might
> as well have a devmgr process with no need for a devfs at all.
No, I can do many things that a traditional filesystem can't do.
A devmgr daemon for an ext2-based /dev lacks the flexibility of a
virtual /dev. No amount of arguing is ever going to change that.
Regards,
Richard....
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