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To: gnap-dev@g.o
From: josé Alberto Suárez López <bass@g.o>
Subject: Re: [PATCH] Custom GNAP TEMPDIR in gnap_make
Date: Thu, 21 Jun 2007 15:41:48 +0200
El jue, 21-06-2007 a las 15:40 +0300, Philipp Riegger escribió:
> On 21.06.2007, at 15:02, josé Alberto Suárez López wrote:
> 
> > nice idea :)
> >
> > El jue, 21-06-2007 a las 14:48 +0300, Philipp Riegger escribió:
> >> Good day.
> >>
> >> I though it might be nice to be able to tell gnap_make which tempdir
> >> to use. I can think of 2 scenarios where this will make sense:
> 
> I'd like to discuss 2 points i'm not quite sure about.
> 
> 1) keeptemp: Should this be an extra option (-K) or should this be  
> triggered by my introduces custom tempdir option (-T)?

i prefer an extra option, so maybe is better to keep this kind of
"advanced" options in commons.conf

> 2) My option is quite strange since "usually" you give a tempdir  
> like /var/tmp and the tool uses a subdir of that e.g. /var/tmp/gnap- 
> lsdfnsdf. My approach uses the given dir directly, this is kind of  
> not straight forward. Furthermore, if somebody uses a environment  
> variable TEMPDIR and -T is not used, the alternative execution path  
> is also used.
> 
> Some possibilities what to do:
> 
> To fix the environment thing, TEMPDIR can be set to '' before parsing  
> command line arguments. As an alternative we could use the GNAP*  
> namespace and rename it to GNAPTEMP or GNAPTEMPDIR. This would be  
> easier than setting all sensitive variables to '' and if somebody  
> messes with that namespace, it's not our fault.

We must use the GNAP namespace.

> To fix 2) we could use TEMPDIR/gnap or TEMPDIR/gnap-VERSIONSTAMP in  
> the -T case. anything against this?

VERSIONSTAMP must be used ever.

> 
> Thoughts about 1): If no overlays are used, the tempdir is quite  
> small. If overlays are used, then it is bigger, but the data created  
> during the snapshot creation is simply the portage snapshot and the  
> overlays on top and can be found in the catalyst tempdir. So... the  
> big data is never really needed and it is available at another place  
> and the small data is the important one and does not hurt much.
> 
> Still: Should we introduce a new command like option or create some  
> logic when to delete what and when not? I would prefer 2.

i prefer 2 too, so maybe we can guide this logic in cmmons.conf

> 
> Philipp

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References:
[PATCH] Custom GNAP TEMPDIR in gnap_make
-- Philipp Riegger
Re: [PATCH] Custom GNAP TEMPDIR in gnap_make
-- josé Alberto Suárez López
Re: [PATCH] Custom GNAP TEMPDIR in gnap_make
-- Philipp Riegger
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