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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Subject:
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<td>Re: [lustre-discuss] The safe path for upgrading servers
from 2.5.3 to 2.12.x</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date: </th>
<td>Wed, 2 Dec 2020 10:30:56 -0800</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From: </th>
<td>Patrick Shopbell <a class="moz-txt-link-rfc2396E" href="mailto:pls@astro.caltech.edu"><pls@astro.caltech.edu></a></td>
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<td><a class="moz-txt-link-abbreviated" href="mailto:pls@astro.caltech.edu">pls@astro.caltech.edu</a></td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td>Anu Mahabal <a class="moz-txt-link-rfc2396E" href="mailto:vam@astro.caltech.edu"><vam@astro.caltech.edu></a></td>
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<br>
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 class="moz-txt-link-freetext" href="https://www.lustre.org/download/">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>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">Hi there,
Can anyone advise me the safe way to upgrade Lustre server from 2.5.3 to
2.10.x or 2.12.x? I am running 2.5.3 on CentOS 6.5 with a FDR card. I now
have to upgrade the card to EDR or HDR.
And, is there anyone successfully connecting servers with the mix of EDR
and HDR200? And how?
Best regards,
Nguyen Viet Cuong
</pre>
</blockquote>
<br>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">_______________________________________________
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