[gpfsug-discuss] changing default configuration values

Simon Thompson (IT Research Support) S.J.Thompson at bham.ac.uk
Tue Oct 10 13:36:14 BST 2017


They do, but ...

I don't know what happens to a running node if its then added to a
nodeclass. Ie.. Would it apply the options it can immediately, or only
once the node is recycled?

Pass...

Making an mmchconfig change to the node class after its a member would
work as expected.

Simon

On 10/10/2017, 13:32, "gpfsug-discuss-bounces at spectrumscale.org on behalf
of Aaron Knister" <gpfsug-discuss-bounces at spectrumscale.org on behalf of
aaron.s.knister at nasa.gov> wrote:

>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=1111
>>>>>11
>>>>> 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
>>>>>
>>>>> 
>>>>>https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman
>>>>>_l
>>>>> i
>>>>> 
>>>>>stinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=IbxtjdkPAM
>>>>>2S
>>>>> b
>>>>> 
>>>>>on4Lbbi4w&m=PvuGmTBHKi7CNLU4X2GzUXkHzzezwTSrL4EdgwI0wrk&s=ma-IogZTBRL1
>>>>>1_
>>>>> 4
>>>>> zp2l8JqWmpHajoLXubAPSIS3K7GY&e=
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> gpfsug-discuss mailing list
>>>>> gpfsug-discuss at spectrumscale.org
>>>>> http://gpfsug.org/mailman/listinfo/gpfsug-discuss
>>>>>
>>>>
>>>> -- 
>>>> 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
>>>> http://gpfsug.org/mailman/listinfo/gpfsug-discuss
>>>> _______________________________________________
>>>> gpfsug-discuss mailing list
>>>> gpfsug-discuss at spectrumscale.org
>>>> http://gpfsug.org/mailman/listinfo/gpfsug-discuss
>>>
>>> _______________________________________________
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>> 
>> _______________________________________________
>> gpfsug-discuss mailing list
>> gpfsug-discuss at spectrumscale.org
>> http://gpfsug.org/mailman/listinfo/gpfsug-discuss
>> 
>
>-- 
>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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