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--></style></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>TAKE ME OFF THIS DISYROBUTION LIST…<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>I AM GETTING TOO MANY EMAILS AND I AM NOT I THIS BUSINESS ANY MORE!!!!!!!!!!!!!!!!!!!!!!!!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>-- <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'>James <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:Calibri'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-family:Calibri;color:black'>From: </span></b><span style='font-family:Calibri;color:black'>lustre-discuss <lustre-discuss-bounces@lists.lustre.org> on behalf of Nguyen Viet Cuong <mrcuongnv@gmail.com><br><b>Date: </b>Tuesday, December 1, 2020 at 3:29 AM<br><b>To: </b>Tung-Han Hsieh <thhsieh@twcp1.phys.ntu.edu.tw><br><b>Cc: </b><lustre-discuss@lists.lustre.org><br><b>Subject: </b>Re: [lustre-discuss] The safe path for upgrading servers from 2.5.3 to 2.12.x<o:p></o:p></span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Hi Hsieh,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thank for your comprehensive reply.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I will make a testbed system and try to upgrade servers directly.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Best regards,<br clear=all><o:p></o:p></p><div><div><div><div><p class=MsoNormal>Nguyen Viet Cuong<o:p></o:p></p></div></div></div></div><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Tue, Dec 1, 2020 at 1:01 PM Tung-Han Hsieh <<a href="mailto:thhsieh@twcp1.phys.ntu.edu.tw">thhsieh@twcp1.phys.ntu.edu.tw</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-bottom:12.0pt'>Dear Nguyen,<br><br>Usually the upgrade procedure is the following:<br><br>1. Shutdown the Lustre file system completely.<br> (umount all the clients and servers)<br><br>2. In all the clients and servers, install the new version of Lustre<br> software. If your servers are Lustre with ldiskfs backend, please<br> install the recommand version of e2fsprogs package.<br> (see <a href="https://www.lustre.org/download/" target="_blank">https://www.lustre.org/download/</a>)<br><br>3. In all the servers and clients, unload the Lustre modules by:<br><br> lustre_rmmod<br><br> Or you can reboot these machines instead.<br><br>4. In each of the servers, run the following command to upgrade:<br><br> tunefs.lustre --writeconf /dev/<device_name><br><br> Note that you have to do it for all the MGS / MDT / OST.<br><br>5. When running tunefs.lustre, it may prompt you to turn on some options<br> of the ldiskfs file system of corresponding device using the e2fsprogs<br> utilities. Just follow the indications.<br><br>6. Then the upgrade is completed. You can try to restart the Lustre file<br> system.<br><br>I used to upgrade from version 2.5.X to 2.10.X and 2.12.X directly.<br>Everything looks fine to me.<br><br>Cheers,<br><br>T.H.Hsieh<br><br><br>On Mon, Nov 30, 2020 at 11:17:03PM +0700, Nguyen Viet Cuong wrote:<br>> Hi there,<br>> <br>> Can anyone advise me the safe way to upgrade Lustre server from 2.5.3 to<br>> 2.10.x or 2.12.x? I am running 2.5.3 on CentOS 6.5 with a FDR card. I now<br>> have to upgrade the card to EDR or HDR.<br>> <br>> And, is there anyone successfully connecting servers with the mix of EDR<br>> and HDR200? And how?<br>> <br>> Best regards,<br>> Nguyen Viet Cuong<br><br>> _______________________________________________<br>> lustre-discuss mailing list<br>> <a href="mailto:lustre-discuss@lists.lustre.org" target="_blank">lustre-discuss@lists.lustre.org</a><br>> <a href="http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org" target="_blank">http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org</a><o:p></o:p></p></blockquote></div><p class=MsoNormal>_______________________________________________ lustre-discuss mailing list lustre-discuss@lists.lustre.org http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org <o:p></o:p></p></div></body></html>