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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US">There’s also documentation on wiki.lustre.org, which provides more of a walkthrough of the process:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US"><a href="http://wiki.lustre.org/Category:Lustre_Systems_Administration">http://wiki.lustre.org/Category:Lustre_Systems_Administration</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US">See section 6 in the table of contents for how to format MGT, MDT, OSTs:<o:p></o:p></span></p>
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<span style="font-family:"Arial",sans-serif;mso-fareast-language:EN-US"><a href="http://wiki.lustre.org/Creating_the_Lustre_Management_Service_(MGS)">http://wiki.lustre.org/Creating_the_Lustre_Management_Service_(MGS)</a><o:p></o:p></span></li><li class="MsoListParagraph" style="color:#000040;margin-left:0cm;mso-list:l0 level1 lfo1">
<span style="font-family:"Arial",sans-serif;mso-fareast-language:EN-US"><a href="http://wiki.lustre.org/Creating_the_Lustre_Metadata_Service_(MDS)">http://wiki.lustre.org/Creating_the_Lustre_Metadata_Service_(MDS)</a><o:p></o:p></span></li><li class="MsoListParagraph" style="color:#000040;margin-left:0cm;mso-list:l0 level1 lfo1">
<span style="font-family:"Arial",sans-serif;mso-fareast-language:EN-US"><a href="http://wiki.lustre.org/Creating_Lustre_Object_Storage_Services_(OSS)">http://wiki.lustre.org/Creating_Lustre_Object_Storage_Services_(OSS)</a><o:p></o:p></span></li></ul>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US">There are also follow-on sections for mounting Lustre on clients, the startup and shutdown sequence for services, and how to configure Pacemaker and Corosync
for HA (on CentOS / RHEL).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-US">Malcolm.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#000040;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">lustre-discuss <lustre-discuss-bounces@lists.lustre.org> on behalf of Cory Spitz <spitzcor@cray.com><br>
<b>Date: </b>Friday, 13 October 2017 at 12:12 am<br>
<b>To: </b>Ravi Konila <ravibhatk@gmail.com>, Lustre discussion <lustre-discuss@lists.lustre.org><br>
<b>Subject: </b>Re: [lustre-discuss] mounting failover MGS and MDT<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Ravi,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt">The section of the Lustre Operations Manual on configuration should be what you need:
<a href="http://doc.lustre.org/lustre_manual.xhtml#configuringlustre">http://doc.lustre.org/lustre_manual.xhtml#configuringlustre</a> and
<a href="http://doc.lustre.org/lustre_manual.xhtml#dbdoclet.50438194_88063">http://doc.lustre.org/lustre_manual.xhtml#dbdoclet.50438194_88063</a>. Simply skip the --mdt option when making the MGT like so: mkfs.lustre --fsname=<i>fsname</i> --mgs
<i>/dev/block_device.</i> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt">Please refer to the documentation for more details.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt">-Cory<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">-- <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">lustre-discuss <lustre-discuss-bounces@lists.lustre.org> on behalf of Ravi Konila <ravibhatk@gmail.com><br>
<b>Reply-To: </b>Ravi Konila <ravibhatk@gmail.com><br>
<b>Date: </b>Wednesday, October 11, 2017 at 11:43 PM<br>
<b>To: </b>Lustre Discuss <lustre-discuss@lists.lustre.org><br>
<b>Subject: </b>[lustre-discuss] mounting failover MGS and MDT</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">Hi</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">I am trying to configure Lustre 2.8 with two nodes for MGS/MDT with failover.
</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">I have single attached shared storage to MDS servers. My shared storage partitions are</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">mpathb – 100G fot MGT</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">mpathc – 800G for MDT</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">Now what is the command to create MGS and MDS from mkfs.lustre?</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">Should I create MGS first and later MDS? How do I specify servicenode option?</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black">Any help is highly appreciated.
</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"Verdana",serif;color:black">Regards</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><strong><span style="font-size:10.0pt;font-family:"Verdana",serif;color:black">Ravi Konila</span></strong><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-size:10.0pt;font-family:"Verdana",serif;color:black">Sr. Technical Consultant</span><o:p></o:p></p>
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