[gpfsug-discuss] changing default configuration values

Tue Oct 10 13:30:57 BST 2017

Yes, but obviously only when you recycle mmfsd on the node after adding it
to the node class, e.g. page pool cannot be changed online.

We do this all the time, e.g. We have nodes with different IB
fabrics/cards in clusters, so use mlx4_0/... And mlx5/... And have classes
for (e.g.) "FDR" and "EDR" nodes. (different fabric numbers in different
DCs etc)

Simon

On 10/10/2017, 13:04, "gpfsug-discuss-bounces at spectrumscale.org on behalf
of scottg at emailhosting.com" <gpfsug-discuss-bounces at spectrumscale.org on
behalf of scottg at emailhosting.com> wrote:

>So when a node is added to the node class, my defaults" will be applied?
>If so,excellent. Thanks
>
>
>  Original Message
>From: S.J.Thompson at bham.ac.uk
>Sent: October 10, 2017 8:02 AM
>To: gpfsug-discuss at spectrumscale.org
>Reply-to: gpfsug-discuss at spectrumscale.org
>Subject: Re: [gpfsug-discuss] changing default configuration values
>
>Use mmchconfig and change the defaults, and then have a node class for
>"not the defaults"?
>
>Apply settings to a node class and add all new clients to the node class?
>
>Note there was some version of Scale where node classes were enumerated
>when the config was set for the node class, but in (4.2.3 at least), this
>works as expected, I.e. The node class is not expanded when doing
>mmchconfig -N <nodeclass>
>
>Simon
>
>On 10/10/2017, 10:49, "gpfsug-discuss-bounces at spectrumscale.org on behalf
>of scottg at emailhosting.com" <gpfsug-discuss-bounces at spectrumscale.org on
>behalf of scottg at emailhosting.com> wrote:
>
>>So, I think brings up one of the slight frustrations I've always had with
>>mmconfig..
>>
>>If I have a cluster to which new nodes will eventually be added, OR, I
>>have standard I always wish to apply, there is no way to say "all FUTURE"
>>nodes need to have my defaults.. I just have to remember to extended the
>>changes in as new nodes are brought into the cluster.
>>
>>Is there a way to accomplish this?
>>Thanks
>>
>>  Original Message
>>From: aaron.s.knister at nasa.gov
>>Sent: October 9, 2017 2:56 PM
>>To: gpfsug-discuss at spectrumscale.org
>>Reply-to: gpfsug-discuss at spectrumscale.org
>>Subject: Re: [gpfsug-discuss] changing default configuration values
>>
>>Thanks! Good to know.
>>
>>On 10/6/17 11:06 PM, IBM Spectrum Scale wrote:
>>> Hi Aaron,
>>> 
>>> The default value applies to all nodes in the cluster. Thus changing it
>>> will change all nodes in the cluster. You need to run mmchconfig to
>>> customize the node override again.
>>> 
>>> 
>>> Regards, The Spectrum Scale (GPFS) team
>>> 
>>> 
>>>------------------------------------------------------------------------
>>>-
>>>-----------------------------------------
>>> 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=111111
>>>1
>>>1-0000-0000-0000-000000000479.
>>> 
>>> 
>>> 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.
>>> 
>>> Inactive hide details for Aaron Knister ---10/06/2017 06:30:20 PM---Is
>>> there a way to change the default value of a configuratiAaron Knister
>>> ---10/06/2017 06:30:20 PM---Is there a way to change the default value
>>> of a configuration option without overriding any overrid
>>> 
>>> From: Aaron Knister <aaron.s.knister at nasa.gov>
>>> To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
>>> Date: 10/06/2017 06:30 PM
>>> Subject: [gpfsug-discuss] changing default configuration values
>>> Sent by: gpfsug-discuss-bounces at spectrumscale.org
>>> 
>>> 
>>>------------------------------------------------------------------------
>>> 
>>> 
>>> 
>>> Is there a way to change the default value of a configuration option
>>> without overriding any overrides in place?
>>> 
>>> Take the following situation:
>>> 
>>> - I set parameter foo=bar for all nodes (mmchconfig foo=bar)
>>> - I set parameter foo to baz for a few nodes (mmchconfig foo=baz -N
>>> n001,n002)
>>> 
>>> Is there a way to then set the default value of foo to qux without
>>> changing the value of foo for nodes n001 and n002?
>>> 
>>> -Aaron
>>> 
>>> -- 
>>> Aaron Knister
>>> NASA Center for Climate Simulation (Code 606.2)
>>> Goddard Space Flight Center
>>> (301) 286-2776
>>> _______________________________________________
>>> gpfsug-discuss mailing list
>>> gpfsug-discuss at spectrumscale.org
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>>> 
>>> 
>>> 
>>> 
>>> _______________________________________________
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>>>
>>
>>-- 
>>Aaron Knister
>>NASA Center for Climate Simulation (Code 606.2)
>>Goddard Space Flight Center
>>(301) 286-2776
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