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<p class="MsoNormal"><span style="font-size:11.0pt">Denis<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Updates for 2.12.x ceased a couple years ago. Support eligibility for 2.12.x may vary between support providers. I don’t know of any issues specific to 2.12.5 but we have not conducted any testing on that
specific version since 2.12.6 came out in late 2020. Based on the most recent OpenSFS community survey (results to be announced at LUG tomorrow) you are far from alone in still having 2.12.x running in production.
</span><span style="font-size:11.0pt;font-family:"Apple Color Emoji"">😊</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Peter<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;color:black">From:
</span></b><span style="font-family:"Calibri",sans-serif;color:black">"Bertini, Denis Dr." <D.Bertini@gsi.de><br>
<b>Date: </b>Monday, March 31, 2025 at 5:50 AM<br>
<b>To: </b>Peter Jones <pjones@whamcloud.com>, "lustre-discuss@lists.lustre.org" <lustre-discuss@lists.lustre.org><br>
<b>Cc: </b>"Penso, Victor" <V.Penso@gsi.de><br>
<b>Subject: </b>Re: [lustre-discuss] interoperability between lustre client and lustre server version<o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black">Hi Peter,<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Thanks for the quick answer.<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">The exact server version we are running is 2.12.5. Do you see an potential issue running such a server version with clients version 2.15.6?<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Furthermore, i would like to know how long will the 2.12.x ( latest x=9) lustre server version be updated/supported ? <o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Do you know?<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Cheers,<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Denis<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> Peter Jones <pjones@whamcloud.com><br>
<b>Sent:</b> Monday, March 31, 2025 1:57 PM<br>
<b>To:</b> Bertini, Denis Dr.; lustre-discuss@lists.lustre.org<br>
<b>Cc:</b> Penso, Victor<br>
<b>Subject:</b> Re: [lustre-discuss] interoperability between lustre client and lustre server version</span><span style="font-family:"Calibri",sans-serif;color:black">
<o:p></o:p></span></p>
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<p><span style="font-size:11.0pt;color:black">You don’t specify which 2.12.x release that you are using but in theory it should be fine to continue to upgrade to newer 2.15.x releases as they are issued – we test interoperability with the latest 2.12.x release
as part of the pre-release validation for 2.15.x releases.</span><span style="color:black"><o:p></o:p></span></p>
<p><span style="font-size:11.0pt;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
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<p><b><span style="font-family:"Calibri",sans-serif;color:black">From: </span></b><span style="font-family:"Calibri",sans-serif;color:black">lustre-discuss <lustre-discuss-bounces@lists.lustre.org> on behalf of "Bertini, Denis Dr. via lustre-discuss" <lustre-discuss@lists.lustre.org><br>
<b>Reply-To: </b>"Bertini, Denis Dr." <D.Bertini@gsi.de><br>
<b>Date: </b>Monday, March 31, 2025 at 2:09 AM<br>
<b>To: </b>"lustre-discuss@lists.lustre.org" <lustre-discuss@lists.lustre.org><br>
<b>Cc: </b>"Penso, Victor" <V.Penso@gsi.de><br>
<b>Subject: </b>[lustre-discuss] interoperability between lustre client and lustre server version</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="color:black"> <o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black">Hi,<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">We have a server version 2.12 which can interoperate without problem with higher lustre client versions ( up to 2.15.6 at the moment ).<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">My question is how long can we update the client version on our compute nodes without having problem with the "old" luster server version 2.12?<o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black">thanks in advance,</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">---------</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Denis Bertini</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Abteilung: CIT</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Ort: SB3 2.265a</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Tel: +49 6159 71 2240</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Fax: +49 6159 71 2986</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">E-Mail: d.bertini@gsi.de</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">GSI Helmholtzzentrum für Schwerionenforschung GmbH</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Planckstraße 1, 64291 Darmstadt, Germany, www.gsi.de</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Commercial Register / Handelsregister: Amtsgericht Darmstadt, HRB 1528</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Managing Directors / Geschäftsführung:</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Professor Dr. Paolo Giubellino, Dr. Ulrich Breuer, Jörg Blaurock</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Chairman of the GSI Supervisory Board / Vorsitzender des GSI-Aufsichtsrats:</span><span style="color:black"><o:p></o:p></span></p>
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<p><span style="font-size:9.0pt;font-family:"Calibri",sans-serif;color:black">Ministerialdirigent Dr. Volkmar Dietz</span><span style="color:black"><o:p></o:p></span></p>
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