https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-9028 Lustre <p>Dear support,<br/> Is there some documentation existing describing the compatibility matrix between different client and server versions ?</p> <p>We're currently running a lustre client / server in 2.0 and planning to migrate soon on new hardware but we're having various request of new OS which come with 2.8 version for the client. Is there a way we can ask for instance 2.8 version to behave as 2.0 client,..</p> <p>I found the following similar ticket for older releases:<br/> <a href="https://jira.hpdd.intel.com/browse/LU-1439" class="external-link" target="_blank" rel="nofollow noopener">https://jira.hpdd.intel.com/browse/LU-1439</a><br/> and some info about supported OS version and client/server version but not client to server compat <a href="https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix" class="external-link" target="_blank" rel="nofollow noopener">https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix</a></p> <p>Thanks in advance for your help,<br/> JD.</p> LU-9028

Client / Server Compatibility Matrix

Question/Request Minor Resolved Not a Bug WC Triage JD Delaplagne Wed, 18 Jan 2017 11:05:20 +0000 Wed, 18 Jan 2017 13:33:46 +0000 Wed, 18 Jan 2017 13:33:45 +0000 Lustre 2.0.0 Lustre 2.8.0 0 2 <p>JD</p> <p>Could you please clarify as to where you accessed your current software? As this is the project for the Lustre community releases, I initally had read 2.0 to mean the community 2,0 release which came out in 2010 timeframe but as you address the ticket as "Support" I wonder if in face you mean the Intel Entterprise Edition 2.0 which came out in 2014.</p> <p>Peter</p> <p>I meant the community release, sorry for the confusion and it's 2.1 not 2.0.</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">[root@**** ~]# rpm -qa | grep lustre- lustre-2.1.4-2.6.32_279.14.1.el6_lustre.x86_64.x86_64 lustre-modules-2.1.4-2.6.32_279.14.1.el6_lustre.x86_64.x86_64 </pre> </div></div> <p>Best Regards,<br/> JD.</p> <p>JD</p> <p>2.1.4 is not a community release - it was a Whamcloud customer maintenance release but this does help me understand your environment better. So let me check that I understand your requirements correctly - you have a current RHEL 6 cluster and you wish to introduce some new clients that will use RHEL 7 and you would like to know whether it is possible to do this without upgrading your whole cluster?</p> <p>Peter</p> <p>Dear Peter,<br/> This is correct <img class="emoticon" src="https://jira.whamcloud.com/images/icons/emoticons/smile.png" height="16" width="16" align="absmiddle" alt="" border="0"/></p> <p>The urgency is to be able to support CentOS 7 clients in some way which would then give us some time to plan the cluster replacement, understanding the different options like type of hardware, version, support,..</p> <p>-jd</p> <p>JD</p> <p>The community releases officially only support the previous version (so 2.7 in the case of the 2.8 release) but often compatibilty will naturally remain spanning multiple release versions. I have not heard of anyone trying 2.8 clients with 2.1 servers but I do not expect this to work as I think that I heard 2.1/2.7 clients did not work. I expect that your best option would be to move to a 2.5.x release on your existing cluster and then that more likely will work ok with 2.8 (or even 2.9) clients. I stress that I have not tested any of these options myself but this is based on experience and anecdotal evidence over the years.</p> <p>Peter</p> Development Rank 1|hzz0zr: Rank (Obsolete) 9223372036854775807