[gpfsug-discuss] quota on secondary groups for a user?

[Jaime Pinto]

Since there were inconsistencies in the responses, I decided to rig a  
couple of accounts/groups on our LDAP to test "My interpretation", and  
determined that I was wrong. When Kevin mentioned it would mean a bug  
I had to double-check:

If a user hits the hard quota or exceeds the grace period on the soft  
quota on any of the secondary groups that user will be stopped from  
further writing to those groups as well, just as in the primary group.

I hope this clears the waters a bit. I still have to solve my puzzle.

Thanks everyone for the feedback.
Jaime



Quoting "Jaime Pinto" <pinto at scinet.utoronto.ca>:

> Quoting "Buterbaugh, Kevin L" <Kevin.Buterbaugh at Vanderbilt.Edu>:
>
>> Hi Sven,
>>
>> Wait - am I misunderstanding something here?  Let?s say that I have  
>>   ?user1? who has primary group ?group1? and secondary group   
>> ?group2?.   And let?s say that they write to a directory where the   
>> bit on the  directory forces all files created in that directory to  
>>  have group2  associated with them.  Are you saying that those  
>> files  still count  against group1?s group quota???
>>
>> Thanks for clarifying?
>>
>> Kevin
>
> Not really,
>
> My interpretation is that all files written with group2 will count
> towards the quota on that group. However any users with group2 as the
> primary group will be prevented from writing any further when the
> group2 quota is reached. However the culprit user1 with primary group
> as group1 won't be detected by gpfs, and can just keep going on writing
> group2 files.
>
> As far as the individual user quota, it doesn't matter: group1 or
> group2 it will be counted towards the usage of that user.
>
> It would be interesting if the behavior was more as expected. I just
> checked with my Lustre counter-parts and they tell me whichever
> secondary group is hit first, however many there may be, the user will
> be stopped. The problem then becomes identifying which of the secondary
> groups hit the limit for that user.
>
> Jaime
>
>
>>
>> On Aug 3, 2016, at 11:35 AM, Sven Oehme    
>> <oehmes at gmail.com<mailto:oehmes at gmail.com>> wrote:
>>
>> Hi,
>>
>> quotas are only counted against primary group
>>
>> sven
>>
>>
>> On Wed, Aug 3, 2016 at 9:22 AM, Jaime Pinto    
>> <pinto at scinet.utoronto.ca<mailto:pinto at scinet.utoronto.ca>> wrote:
>> Suppose I want to set both USR and GRP quotas for a user, however    
>> GRP is not the primary group. Will gpfs enforce the secondary group  
>>   quota for that user?
>>
>> What I mean is, if the user keeps writing files with secondary   
>> group  as the attribute, and that overall group quota is reached,   
>> will that  user be stopped by gpfs?
>>
>> Thanks
>> Jaime
>>
>>
>>
>>
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>> Jaime Pinto
>> SciNet HPC Consortium  - Compute/Calcul Canada
>> www.scinet.utoronto.ca<http://www.scinet.utoronto.ca/> -    
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>>
>
>
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Jaime Pinto
SciNet HPC Consortium  - Compute/Calcul Canada
www.scinet.utoronto.ca - www.computecanada.org
University of Toronto
256 McCaul Street, Room 235
Toronto, ON, M5T1W5
P: 416-978-2755
C: 416-505-1477

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