[gpfsug-discuss] changing default configuration values

Tue Oct 10 13:32:25 BST 2017

Simon,

Does that mean node classes don't work the way individual node names do
with the "-i/-I" options?

-Aaron

On 10/10/17 8:30 AM, Simon Thompson (IT Research Support) wrote:
> 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.
>>>>
>>>>
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>>>>
>>>> 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
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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
>>> _______________________________________________
>>> gpfsug-discuss mailing list
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-- 
Aaron Knister
NASA Center for Climate Simulation (Code 606.2)
Goddard Space Flight Center
(301) 286-2776