[OpenAFS-devel] Re: OpenAFS: conventions for new @sys? (rs_aix43 s390_linux22)

[Michael S. Tsirkin]

Hello!
One useful enhancement would be to make it possible to create
directories through the @sys magic.
E.g. 
mkdir @sys could be the equivalent of mkdir `fs sysname|sed s/.*'(.*)'/\1/`

MST

Quoting r. Russ Allbery (rra@stanford.edu) "Re: OpenAFS: conventions for new @sys? (rs_aix43 s390_linux22)":
> Nathan Neulinger <nneul@umr.edu> writes:
> 
> > How bout a much more capable facility than @sys... Extend that concept
> > into what the old apollo workstations had - dynamic symlinks. Why not
> > make that part of AFS. i.e. support more than just @sys.
> 
> > For example, alot of sites would probably find '@acsys' to be useful to
> > do the autoconf determined sys type.
> 
> Er... for what?
> 
> The output of config.guess is useful for FSF build tools and for doing
> some system-specific checks in configure, and that's pretty much it.
> 
> > I dunno exactly, but it seems like making a more general purpose
> > mechanism would be very useful.
> 
> Hm.  My immediate reaction is that we really don't want to break things
> that aren't broken.  I find @sys quite useful for managing a large shared
> software installation on basically every platform Transarc currently
> supports, and with a few minor tweaks it could be even more useful
> (currently, we're using fs sysname to do that tweak for AIX ourselves).
> I'd really rather not add a bunch of complexity to an idea that's already
> working fine.
> 
> If we start trying to track things like ABI models and whatnot in @sys
> rather than some rough idea of "stuff compiled on a system mapped to this
> @sys value will probably work on other systems also mapped to this @sys
> value in the absence of ABI linking issues and deep kernel magic," I think
> we're going to end up with too fine of granularity.
> 
> -- 
> Russ Allbery (rra@stanford.edu)             <http://www.eyrie.org/~eagle/>

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Michael S. Tsirkin
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