[gpfsug-discuss] Fileset quotas enforcement
Markus Rohwedder
rohwedder at de.ibm.com
Thu Oct 26 08:18:46 BST 2017
Please also note that when you write as root, you are not restricted by the
quota limits.
See example:
Write as non root user and run into hard limit:
[mr at home-11 limited]$ dd if=/dev/urandom of=testfile2 bs=1000 count=100000
dd: error writing ‘testfile2’: Disk quota exceeded
29885+0 records in
29884+0 records out
29884000 bytes (30 MB) copied, 3.38491 s, 8.8 MB/s
[root at home-11 limited]# mmrepquota gpfs0
Block Limits |
File Limits
Name type KB quota limit in_doubt grace |
files quota limit in_doubt grace
...
limited FILESET 322176 214784 322304 128 7 days |
5 0 0 0 none
Now write as root user and exceed hard limit:
[root at home-11 limited]# dd if=/dev/urandom of=testfile2 bs=1000
count=100000
100000+0 records in
100000+0 records out
100000000 bytes (100 MB) copied, 12.8355 s, 7.8 MB/s
[root at home-11 limited]# mmrepquota gpfs0
Block Limits |
File Limits
Name type KB quota limit in_doubt grace |
files quota limit in_doubt grace
...
limited FILESET 390656 214784 322304 8939520 7 days |
5 0 0 40 none
Mit freundlichen Grüßen / Kind regards
Dr. Markus Rohwedder
Spectrum Scale GUI Development
Phone: +49 7034 6430190 IBM Deutschland
E-Mail: rohwedder at de.ibm.com Am Weiher 24
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Germany
IBM Deutschland
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Development
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From: "Jaime Pinto" <pinto at scinet.utoronto.ca>
To: "gpfsug main discussion list"
<gpfsug-discuss at spectrumscale.org>, "Emmanuel Barajas Gonzalez"
<vanfalen at mx1.ibm.com>
Cc: gpfsug-discuss at spectrumscale.org
Date: 10/26/2017 12:18 AM
Subject: Re: [gpfsug-discuss] Fileset quotas enforcement
Sent by: gpfsug-discuss-bounces at spectrumscale.org
Did you try to run mmcheckquota on the device
I observed that in the most recent versions (for the last 3 years)
there is a real long lag for GPFS to process the internal accounting.
So there is a slippage effects that skews quota operations.
mmcheckquota is supposed to reset and zero all those cumulative deltas
effective immediately.
Jaime
Quoting "Emmanuel Barajas Gonzalez" <vanfalen at mx1.ibm.com>:
> Hello spectrum scale team! I'm working on the implementation of
> quotas per fileset and I followed the basic instructions described in
> the documentation. Currently the gpfs device has per-fileset quotas
> and there is one fileset with a block soft and a hard limit set. My
> problem is that I'm being able to write more and more files beyond
> the quota (the grace period has expired as well). How can I make
> sure quotas will be enforced and that no user will be able to consume
> more space than specified? mmrepquota smfslv0
> Block Limits
> |
> Name fileset type KB quota limit
> in_doubt grace |
> root root USR 512 0 0
> 0 none |
> root cp1 USR 64128 0 0
> 0 none |
> system root GRP 512 0 0
> 0 none |
> system cp1 GRP 64128 0 0
> 0 none |
> valid root GRP 0 0 0
> 0 none |
> root root FILESET 512 0 0
> 0 none |
> cp1 root FILESET 64128 2048 2048
> 0 expired |
> Thanks in advance ! Best regards,
>
__________________________________________________________________________________
> Emmanuel Barajas Gonzalez TRANSPARENT CLOUD TIERING FOR DS8000
>
> Phone:
> 52-33-3669-7000 x5547 E-mail: vanfalen at mx1.ibm.com[1] Follow me:
> @van_falen
> 2200 Camino A El Castillo
> El Salto, JAL 45680
> Mexico
>
>
>
>
> Links:
> ------
> [1] mailto:vanfalen at mx1.ibm.com
>
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