> Stephen C. Tweedie writes:
> > On Fri, 26 Jun 1998 03:15:30 -0400 (EDT), "Albert D. Cahalan"
> > <acahalan@cs.uml.edu> said:
>
> >> Explain how to do real-time IO bandwidth reservations with a
> >> filesystem that is unaware of the underlying structure.
> >
> > If you want to start that game, explain where you got the idea that
> > Linux's filesystems and IO subsystems were _ever_ designed to be able to
> > make guarantees about IO bandwidth at all!
>
> I didn't get that idea, since Linux is not designed for that.
> Linux was not designed to be portable, was not designed for SMP,
> was not designed to real-time scheduling, and was not expected
> to ever support SCSI.
It's lack of initial SCSI support is obvious. The way we name scsi devices
(/dev/sda /dev/sdb ...) is a complete joke! At least Linux's other 'new'
features are better written.
> My concern is that implementation choices made now will mean that
> future hackers will have to rip up more code than they might
> otherwise need to. (not that it would be easy in any case)
>
> Anyway, how else would it be done? You said that the "simple"
> solution (dumb filesystem on top of generic LVM) wasn't going
> to work so well, didn't you? Have you changed your mind?
>
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