[gpfsug-discuss] Quota and hardlimit enforcement

Jaime Pinto pinto at scinet.utoronto.ca
Mon Jul 31 19:46:53 BST 2017


Renar

For as long as the usage is below the hard limit (space or inodes) and  
below the grace period you'll be able to write.

I don't think you can set the grace period to an specific value as a  
quota parameter, such as none. That is set at the filesystem creation  
time. BTW, grace period limit has been a mystery to me for many years.  
My impression is that GPFS keeps changing it internally depending on  
the position of the moon. I think ours is 2 hours, but at times I can  
see users writing for longer.

Jaime



Quoting "Grunenberg, Renar" <Renar.Grunenberg at huk-coburg.de>:

> Hallo All,
> we are on Version 4.2.3.2 and see some missunderstandig in the   
> enforcement of hardlimit definitions on a flieset quota. What we see  
>  is we put some 200 GB files on following quota definitions:  quota   
> 150 GB Limit 250 GB Grace none.
> After the creating of one 200 GB we hit the softquota limit, thats   
> ok. But After the the second file was created!! we expect an io   
> error but it don?t happen. We define all well know Parameters   
> (-Q,..) on the filesystem . Is this a bug or a Feature? mmcheckquota  
>  are already running at first.
> Regards Renar.
>
>
> Renar Grunenberg
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Jaime Pinto
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