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<p class="MsoNormal">If deleting and re-adding it restores the status to up then this sounds like a bug to me.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can you enable debug tracing, reproduce the issue, and add this information to a ticket?<br>
<br>
To enable/gather debug:<br>
<br>
# lctl set_param debug=+net<br>
<reproduce issue><br>
# lctl dk > /tmp/dk.log<br>
<br>
You can create a ticket at <a href="https://jira.whamcloud.com/">https://jira.whamcloud.com/</a><br>
<br>
Please provide the dk.log with the ticket.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Chris Horn<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><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
</span><span style="font-size:12.0pt;font-family:"MS Gothic";color:black">¸¯Ðà</span><span style="font-size:12.0pt;font-family:"PingFang TC",sans-serif;color:black">Òø</span><span style="font-size:12.0pt;color:black"> via lustre-discuss <lustre-discuss@lists.lustre.org><br>
<b>Date: </b>Friday, February 17, 2023 at 2:53 AM<br>
<b>To: </b>lustre-discuss@lists.lustre.org <lustre-discuss@lists.lustre.org><br>
<b>Subject: </b>[lustre-discuss] LNet nid down after some thing changed the NICs<o:p></o:p></span></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I encountered a problem when using Lustre Client on k8s with kubenet. Very happy if you could help me.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">My LNet configuration is:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">net:<br>
- net type: lo<br>
local NI(s):<br>
- nid: 0@lo<br>
status: up<br>
- net type: tcp<br>
local NI(s):<br>
- nid: 10.224.0.5@tcp<br>
status: up<br>
interfaces:<br>
0: eth0<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">It works. But after I deploy or delete a pod on the node. The nid goes down like:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">- nid: 10.224.0.5@tcp<br>
status: down<br>
interfaces:<br>
0: eth0<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">k8s uses veth pairs, so it will add or delete network interfaces when deploying or deleting pods. But it doesn't touch the eth0 NIC. I can fix it by deleting the tcp net by `lnetctl net del` and re-add it by `lnetctl net add`. But I need
to do this every time after a pod is scheduled to this node.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">My node OS is Ubuntu 18.04 5.4.0-1101-azure. The Lustre Client is built by myself from 2.15.1. Is this an expected LNet behavior or I got something wrong? I re-build and tested it several times and got the same problem.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Chuanjun<o:p></o:p></p>
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