[gpfsug-discuss] changing default configuration values
IBM Spectrum Scale
scale at us.ibm.com
Tue Oct 10 15:51:37 BST 2017
For a customer production system, "mmdiag --config" rather than "mmfsadm
dump config" should be used. The mmdiag command is meant for end users
while the "mmfsadm dump" command is a service aid that carries greater
risks.
Regards, The Spectrum Scale (GPFS) team
------------------------------------------------------------------------------------------------------------------
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From: IBM Spectrum Scale/Poughkeepsie/IBM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: 10/10/2017 10:48 AM
Subject: Re: [gpfsug-discuss] changing default configuration values
Sent by: Enci Zhong
It's always helpful to check and confirm that you get what you expected.
mmlsconfig shows the value in the configuration and "mmfsadm dump config"
shows the value in the GPFS daemon currently running.
[root at c10f1n11 gitr]# mmlsconfig pagepool
pagepool 1G
[root at c69bc2xn03 gitr]# mmdsh -N all mmdiag --config |grep "pagepool "
c69bc2xn03.gpfs.net: pagepool 1073741824
c10f1n11.gpfs.net: pagepool 1073741824
[root at c10f1n11 gitr]# mmchconfig pagepool=1500M -i -N c69bc2xn03
mmchconfig: Command successfully completed
mmchconfig: Propagating the cluster configuration data to all
affected nodes. This is an asynchronous process.
[root at c10f1n11 gitr]# Tue Oct 10 10:36:49 EDT 2017: mmcommon pushSdr_async:
mmsdrfs propagation started
[root at c10f1n11 gitr]# Tue Oct 10 10:36:52 EDT 2017: mmcommon pushSdr_async:
mmsdrfs propagation completed; mmdsh rc=0
[root at c10f1n11 gitr]# mmlsconfig pagepool
pagepool 1G
pagepool 1500M [c69bc2xn03]
[root at c69bc2xn03 gitr]# mmdsh -N all mmdiag --config |grep "pagepool "
c69bc2xn03.gpfs.net: pagepool 1572864000
c10f1n11.gpfs.net: pagepool 1073741824
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=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 main discussion list <gpfsug-discuss at spectrumscale.org>
Date: 10/10/2017 08:36 AM
Subject: Re: [gpfsug-discuss] changing default configuration values
Sent by: gpfsug-discuss-bounces at spectrumscale.org
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
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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
>>>> 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
>_______________________________________________
>gpfsug-discuss mailing list
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