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<p class="MsoNormal">Thankyou to Kumaran and Aaaron for your help.<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> gpfsug-discuss-bounces@spectrumscale.org [mailto:gpfsug-discuss-bounces@spectrumscale.org]
<b>On Behalf Of </b>Kumaran Rajaram<br>
<b>Sent:</b> Friday, June 23, 2017 3:37 PM<br>
<b>To:</b> gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Subject:</b> Re: [gpfsug-discuss] IO prioritisation / throttling?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hi John,</span><br>
<br>
<span style="font-size:10.0pt;color:red">>>We have a GPFS Setup using Fujitsu filers and Mellanox infiniband.</span><br>
<span style="font-size:10.0pt;color:red">>>The desire it to set up an environment for test and development where if IO ‘runs wild’ it will not bring down</span><br>
<span style="font-size:10.0pt;color:red">>>the production storage. </span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">You may use the Spectrum Scale Quality of Service for I/O "mmchqos" command (details in link below) to define IOPS limits for the "others" as well as the "maintenance" class for the Dev/Test file-system
"pools" (for e.g., mmchqos tds_fs --enable pool=*,other=10000IOPS, maintenance=5000IOPS). This way, the Test and Dev file-system/storage-pools IOPS can be limited/controlled to specified IOPS , giving higher priority to the production GPFS file-system/storage
(with production_fs pool=* other=unlimited,maintenance=unlimited - which is the default).
</span><br>
<br>
<a href="https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ibm.com%2Fsupport%2Fknowledgecenter%2FSTXKQY_4.2.3%2Fcom.ibm.spectrum.scale.v4r23.doc%2Fbl1adm_mmchqos.htm&data=01%7C01%7Cjohn.hearns%40asml.com%7C6921f7ac19a74a9c8e5908d4ba3ce6ae%7Caf73baa8f5944eb2a39d93e96cad61fc%7C1&sdata=BV0oxuDzdXu%2FGEyS1LmjsQqEf5T2vwT81ClWFZS1ReY%3D&reserved=0"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">https://www.ibm.com/support/knowledgecenter/STXKQY_4.2.3/com.ibm.spectrum.scale.v4r23.doc/bl1adm_mmchqos.htm</span></a><br>
<a href="https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ibm.com%2Fsupport%2Fknowledgecenter%2FSTXKQY_4.2.3%2Fcom.ibm.spectrum.scale.v4r23.doc%2Fbl1adm_qosio_describe.htm%23qosio_describe&data=01%7C01%7Cjohn.hearns%40asml.com%7C6921f7ac19a74a9c8e5908d4ba3ce6ae%7Caf73baa8f5944eb2a39d93e96cad61fc%7C1&sdata=%2BnCF31KD1iuOmtSNWRW%2FnHBSPyiOsEMBd6zBUzU3588%3D&reserved=0"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">https://www.ibm.com/support/knowledgecenter/STXKQY_4.2.3/com.ibm.spectrum.scale.v4r23.doc/bl1adm_qosio_describe.htm#qosio_describe</span></a><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">My two cents.</span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">Regards,</span><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">-Kums</span><br>
<br>
<br>
<br>
<br>
<br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">John Hearns <<a href="mailto:john.hearns@asml.com">john.hearns@asml.com</a>></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">06/23/2017 04:14 AM</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">[gpfsug-discuss] IO prioritisation / throttling?</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Sent by: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif"><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a></span><o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<br>
<span style="font-size:10.0pt">I guess this is a rather ill-defined question, and I realise it will be open to a lot of interpretations.</span><br>
<span style="font-size:10.0pt">We have a GPFS Setup using Fujitsu filers and Mellanox infiniband.</span><br>
<span style="font-size:10.0pt">The desire it to set up an environment for test and development where if IO ‘runs wild’ it will not bring down</span><br>
<span style="font-size:10.0pt">the production storage. If anyone has a setup like this I would be interested in chatting with you.</span><br>
<span style="font-size:10.0pt">Is it feasible to create filesets which have higher/lower priority than others?</span><br>
<span style="font-size:10.0pt"> </span><br>
<span style="font-size:10.0pt">Thankyou for any insights or feedback</span><br>
<span style="font-size:10.0pt">John Hearns</span><o:p></o:p></p>
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