[gpfsug-discuss] Callbacks / softQuotaExceeded

Mon Nov 6 22:18:12 GMT 2017

Right, Bryan.  To expand on that a bit, I'll make two additional points. 
(1) Only a node in the cluster that owns the file system can be appointed 
a file system manager for the file system.  Nodes that remote mount the 
file system from other clusters cannot be appointed the file system 
manager of the remote file system.  (2) A node need not have the manager 
designation (as seen in mmlscluster output) to become a file system 
manager; nodes with the manager designation are preferred, but one could 
use mmchmgr to assign the role to a non-manager node (for instance).

Regards, The Spectrum Scale (GPFS) team

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From:   Bryan Banister <bbanister at jumptrading.com>
To:     gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>, 
"scale at us.ibm.com" <scale at us.ibm.com>
Date:   11/06/2017 04:09 PM
Subject:        RE: [gpfsug-discuss] Callbacks / softQuotaExceeded

Hi Simon,

It will only trigger the callback on the currently appointed File System 
Manager, so you need to make sure your callback scripts are installed on 
all nodes that can occupy this role.

HTH,
-Bryan

From: gpfsug-discuss-bounces at spectrumscale.org [
mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Simon 
Thompson (IT Research Support)
Sent: Monday, November 06, 2017 3:00 PM
To: scale at us.ibm.com; gpfsug main discussion list 
<gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] Callbacks / softQuotaExceeded

Note: External Email

Thanks Eric,

One other question, when it says it must run on a manager node, I'm 
assuming that means a manager node in a storage cluster (we multi-cluster 
clients clusters in).

Thanks

Simon

From: Eric Agar <agar at us.ibm.com> on behalf of "scale at us.ibm.com" <
scale at us.ibm.com>
Date: Monday, 6 November 2017 at 19:51
To: "gpfsug-discuss at spectrumscale.org" <gpfsug-discuss at spectrumscale.org>, 
Simon Thompson <S.J.Thompson at bham.ac.uk>
Cc: IBM Spectrum Scale <scale at us.ibm.com>
Subject: Re: [gpfsug-discuss] Callbacks / softQuotaExceeded

Simon, 

Based on my reading of the code, when a softQuotaExceeded event callback 
is invoked with %quotaType having the value "FILESET", the following 
arguments correspond with each other for filesetLimitExceeded and 
softQuotaExceeded:

- filesetLimitExceeded %inodeUsage  and softQuotaExceeded  %filesUsage
- filesetLimitExceeded %inodeQuota  and softQuotaExceeded  %filesQuota
- filesetLimitExceeded %inodeLimit  and softQuotaExceeded  %filesLimit
- filesetLimitExceeded %filesetSize and softQuotaExceeded  %blockUsage
- filesetLimitExceeded %softLimit   and softQuotaExceeded  %blockQuota
- filesetLimitExceeded %hardLimit   and softQuotaExceeded  %blockLimit

So, terms have changed to make them a little friendlier and to generalize 
them.  An inode is a file.  Limits related to inodes and to blocks are 
being reported.

Regards, The Spectrum Scale (GPFS) team 
Eric Agar

------------------------------------------------------------------------------------------------------------------
If you feel that your question can benefit other users of  Spectrum Scale 
(GPFS), then please post it to the public IBM developerWroks Forum at 
https://www.ibm.com/developerworks/community/forums/html/forum?id=11111111-0000-0000-0000-000000000479
. 

If your query concerns a potential software error in Spectrum Scale (GPFS) 
and you have an IBM software maintenance contract please contact 
1-800-237-5511 in the United States or your local IBM Service Center in 
other countries. 

The forum is informally monitored as time permits and should not be used 
for priority messages to the Spectrum Scale (GPFS) team.

From:        "Simon Thompson (IT Research Support)" <
S.J.Thompson at bham.ac.uk>
To:        "gpfsug-discuss at spectrumscale.org" <
gpfsug-discuss at spectrumscale.org>
Date:        11/06/2017 09:17 AM
Subject:        [gpfsug-discuss] Callbacks / softQuotaExceeded
Sent by:        gpfsug-discuss-bounces at spectrumscale.org

We were looking at adding some callbacks to notify us when file-sets go
over their inode limit by implementing it as a soft inode quota.

In the docs:
https://www.ibm.com/support/knowledgecenter/en/STXKQY_4.2.3/com.ibm.spectru

m.scale.v4r23.doc/bl1adm_mmaddcallback.htm#mmaddcallback__Table1

There is an event filesetLimitExceeded, which has parameters: %inodeUsage
%inodeQuota, however the docs say that we should instead use
softQuotaExceeded as filesetLimitExceeded "It exists only for
compatibility (and may be deleted in a future version); therefore, using
softQuotaExceeded is recommended instead"

However.

softQuotaExceeded seems to have no %inodeQuota of %inodeUsage parameters.
Is this a doc error or is there genuinely no way to get the
inodeQuota/Usage with softQuotaExceeded? The same applies to passing
%quotaEventType.

Any suggestions?

Simon

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