[Mauiusers] user and groups

Bas van der Vlies basv at sara.nl
Fri Apr 3 02:07:52 MDT 2009


On Apr 2, 2009, at 4:52 PM, Stijn De Weirdt wrote:

> hi all,
>
> we would like to organize our users in groups wrt eg fairshare.
> one thing that is aboslutely unclear to me is how maui sees the  
> concept
> of a group. the documentation on this is rather thin and yes, i could
> check the code but sending emails is easier ;)
>
> the documentation suggests that a groupname (ie what you must put
> between []  in GROUPCFG[]) corresponds to a regular group in linux.
> but i still have questions:
>
> a. how is this checked? is this group the primary group of the user or
> does maui scan all groups to check if the user is a member?
If you have the latest maui version.  Just read the changelog and see
that secondary groups are also
supported:
{{{
FSSECONDARYGROUPS        TRUE
}}}

> b. is this checked at all? or better: why can i send a job with torque
> using qsub -W group_list=somegroup and maui happily starts the job  
> (ok,
> no GROUPCFG was defined, but the user certainly was not in the  
> group. if
> this is only checked when any GROUPCFG is defined then i apologise for
> my impatience)
>
see changelog. To prevent this
{{{
IGNPBSGROUPLIST          TRUE
}}}

> c. how do other people manage users and groups within maui? some more
> patches maybe?
>
>
i wrote a patch for it, see results above

> many thanks,
>
> stijn
>
> -- 
> The system will shutdown in 5 minutes.
>
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--
Bas van der Vlies
basv at sara.nl





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