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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thank you very much - that’s very helpful and will save us a lot of effort
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D">J</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tomasz Wolski<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> gpfsug-discuss-bounces@spectrumscale.org [mailto:gpfsug-discuss-bounces@spectrumscale.org]
<b>On Behalf Of </b>Achim Rehor<br>
<b>Sent:</b> Tuesday, May 30, 2017 9:42 AM<br>
<b>To:</b> gpfsug main discussion list<br>
<b>Subject:</b> Re: [gpfsug-discuss] GPFS update path 4.1.1 -> 4.2.3<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">The statement was always to be release n-1 compatible. with
<b>r</b>elease being (V<b>R</b>MF) 4.<b>2</b>.3.0 </span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">so all 4.2 release levels ought to be compatible with all 4.1 levels.
</span><br>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">As Felipe pointed out below, the mmchconfig RELEASE=latest will not touch the filesystem level.
</span><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">And if you are running remote clusters, you need to be aware, that lifting a filesystem to the latest level (mmchfs <fs-name> -V full)</span><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif"">you will loose remote clusters mount ability if they are on a lower level. in these cases use the -V compat flag (and see commands refernce for details)</span><br>
<br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif""><br>
Mit freundlichen Grüßen / Kind regards</span><o:p></o:p></p>
<p><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Achim Rehor</span></b><o:p></o:p></p>
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<p><o:p> </o:p></p>
<p> <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"">"Felipe Knop" <<a href="mailto:knop@us.ibm.com">knop@us.ibm.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"">05/30/2017 04:54 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"">Re: [gpfsug-discuss] GPFS update path 4.1.1 -> 4.2.3</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;font-family:"Arial","sans-serif"">Tomasz,</span><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
The statement below from "Concepts, Planning and Installation Guide" was found to be incorrect and is being withdrawn from the publications. The team is currently working on improvements to the guidance being provided for migration.</span><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
For a cluster which is <b>not </b>running protocols like NFS/SMB/Object, migration of nodes one-at-a-time from 4.1.1 to 4.2.3 should work. Once
<b>all </b>nodes are migrated to 4.2.3, command</span><br>
<b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
mmchconfig release=LATEST</span></b><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
can be issued to move the cluster to the 4.2.3 level. Note that the command above will not change the file system level. The file system can be moved to the latest level with command</span><br>
<b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
mmchfs <i>file-system-name</i> -V full </span></b><br>
<br>
<br>
<span style="font-size:10.0pt"><br>
In other words: can two nodes, one with GPFS version 4.1.1 and the other with version 4.2.3, coexist in the cluster, where nodes have not been migrated to 4.2.3 (i.e. filesystem level is still at version 4.1.1)?</span><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
That is expected to work.</span><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
Felipe</span><br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><br>
----<br>
Felipe Knop <a href="mailto:knop@us.ibm.com">
knop@us.ibm.com</a><br>
GPFS Development and Security<br>
IBM Systems<br>
IBM Building 008<br>
2455 South Rd, Poughkeepsie, NY 12601<br>
(845) 433-9314 T/L 293-9314<br>
</span><br>
<br>
<br>
<br>
<span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F"><br>
From: </span><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">"<a href="mailto:Tomasz.Wolski@ts.fujitsu.com">Tomasz.Wolski@ts.fujitsu.com</a>" <<a href="mailto:Tomasz.Wolski@ts.fujitsu.com">Tomasz.Wolski@ts.fujitsu.com</a>><span style="color:#5F5F5F"><br>
To: </span>"<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>" <<a href="mailto:gpfsug-discuss@spectrumscale.org">gpfsug-discuss@spectrumscale.org</a>><span style="color:#5F5F5F"><br>
Date: </span>05/29/2017 04:24 PM<span style="color:#5F5F5F"><br>
Subject: </span>[gpfsug-discuss] GPFS update path 4.1.1 -> 4.2.3<span style="color:#5F5F5F"><br>
Sent by: </span><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org">gpfsug-discuss-bounces@spectrumscale.org</a></span><o:p></o:p></p>
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<br>
<span style="font-size:10.0pt"><br>
Hello,<br>
<br>
We are planning to integrate new IBM Spectrum Scale version 4.2.3 into our software, but in our current software release we have version 4.1.1 integrated. We are worried how would node-at-a-time updates look like when our customer wanted to update his cluster
from 4.1.1 to 4.2.3 version.<br>
According to “Concepts, Planning and Installation Guide” (for 4.2.3), there’s a limited compatibility between two GPFS versions and if they’re not adjacent, then following update path is advised:<br>
<br>
“If you want to migrate to an IBM Spectrum Scale version that is not an adjacent release of your current<br>
version (for example, version 4.1.1.x to version 4.2.3), you can follow this migration path depending on<br>
your current version:<br>
V 3.5 > V 4.1.0.x > V 4.1.1.x > V 4.2.0.x > V 4.2.1.x > V 4.2.2.x > V 4.2.3.x”<br>
<br>
<br>
My question is: is the above statement true even though on nodes where new GPFS 4.2.3 is installed these nodes will not be migrated to latest release with “mmchconfig release=LATEST” until all nodes in the cluster will have been updated to version 4.2.3?
<br>
In other words: can two nodes, one with GPFS version 4.1.1 and the other with version 4.2.3, coexist in the cluster, where nodes have not been migrated to 4.2.3 (i.e. filesystem level is still at version 4.1.1)?<br>
<br>
Best regards,<br>
Tomasz Wolski<br>
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#004080"><br>
With best regards / Mit freundlichen Grüßen / Pozdrawiam<br>
<b><br>
Tomasz Wolski</b><br>
Development Engineer<br>
NDC Eternus CS HE (ET2)</span><br>
<img border="0" width="81" height="60" id="_x0000_i1031" src="cid:image002.gif@01D2DA01.B94BC9E0" alt="cid:image002.gif@01CE62B9.8ACFA960"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#004080"><br>
FUJITSU</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#004080"><br>
Fujitsu Technology Solutions Sp. z o.o.<br>
Textorial Park Bldg C, ul. Fabryczna 17<br>
90-344 Lodz, Poland</span><span style="font-size:10.0pt"><br>
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