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Thanks, Tim for a quick response.</div>
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I should have mentioned the specific scenario - In this case, lustre client is co-located with an MDS lustre server and the rest of the nice on the host are specifically for MDTs.</div>
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I believe the lustre.conf approach wouldn’t work in that case, or there is still a way ?</div>
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Best</div>
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Sonia</div>
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Confidential – Oracle Internal<br>
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From: </b>Tim Schnedler <timothyschnedler@gmail.com><br>
<b>Date: </b>Friday, October 3, 2025 at 11:54 AM<br>
<b>To: </b>Sonia Sharma <sonia.sh.sharma@oracle.com><br>
<b>Cc: </b>lustre-discuss <lustre-discuss@lists.lustre.org><br>
<b>Subject: </b>[External] : Re: [lustre-discuss] Lustre Client pinned to use specific NIC on host<br>
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<div dir="auto" class="ms-outlook-mobile-reference-message skipProofing">One way to do this is to make a lustre conf file in etc/ modprobe.d</div>
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<div dir="ltr" class="gmail_attr">On Fri, Oct 3, 2025 at 12:48 PM Sonia Sharma via lustre-discuss <<a href="mailto:lustre-discuss@lists.lustre.org" data-outlook-id="ebe5c11c-b0bb-48db-b6fb-56a28e3cb1ab">lustre-discuss@lists.lustre.org</a>> wrote:</div>
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<div class="gmail_quote">Hello Dear Lustre Community</div>
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I was wondering if there is some setting/way to make a Lustre Client use only a specific NIC to route its LNet messages from even when multiple NICs on that host are configured with the same LNet network.</div>
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<div dir="ltr" class="gmail_quote"><span style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt;">For example, let’s say I have a host with this below LNet configuration, then is there a way that I can have the Lustre client to use only “</span><span style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 16px; color: rgb(0, 0, 0);"><i>10.30.201.26@tcp</i></span>”<span style="font-size: 16px;"> for
all its communication</span></div>
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<i>[node1]# lnetctl net show</i></div>
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<i>net:</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> - net type: lo</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> local NI(s):</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> - nid: 0@lo</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> status: up</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> - net type: tcp</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> local NI(s):</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> - nid: 10.30.201.26@tcp</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> status: up</i></div>
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<i> interfaces:</i></div>
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<i> 0: enp1s0</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> - nid: 10.30.201.10@tcp</i></div>
<div class="gmail_quote" style="font-family: Aptos, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<i> status: up</i></div>
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<i> interfaces:</i></div>
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<i> 0: enp1s0:10269</i></div>
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<i> - nid: 10.30.202.241@tcp</i></div>
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<i> status: up</i></div>
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<i> interfaces:</i></div>
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<i> 0: enp1s0:10257</i></div>
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Best regards</div>
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Sonia</div>
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Confidential – Oracle Internal</p>
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