https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-14955 Lustre <p>Making use of fatal error flag for NI selection to be a part of health feature allows the user to control it by turning the health feature on/off. Some user may decide to turn of fatal link state detection if LNet is configured with a single NI.</p> LU-14955

LNet: change use of fatal error flag for ni selection to be a part of health feature

Improvement Minor Resolved Fixed Serguei Smirnov Serguei Smirnov Fri, 20 Aug 2021 23:42:47 +0000 Wed, 22 Nov 2023 20:40:56 +0000 Thu, 1 Sep 2022 14:01:07 +0000 Lustre 2.16.0 0 5 <p>Serguei, is there any real benefit for the <b>only</b> link/interface on a node to be marked unavailable? I don't think that makes sense. In general, I guess enabling LNet Health doesn't make sense for a system with only a single link/interface, since there isn't any choice but to continue using that one interface. In most such cases, the error will be transient, so retrying will fix the problem, and if the only interface on a client is permanently broken, then there isn't anything that can be done anyway. </p> <p>Andreas, yes, after some debating, the patch that I'm about to push is going to allow the only NI to be picked regardless of its fatal state. As an extrapolation, if there are many NIs and they are all in fatal state, LNet is also going to be able to select one.</p> <p>"Serguei Smirnov &lt;ssmirnov@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/44746" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/44746</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14955" title="LNet: change use of fatal error flag for ni selection to be a part of health feature" class="issue-link" data-issue-key="LU-14955"><del>LU-14955</del></a> lnet: make fatal ni handling part of health feature<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 2f9ae83236e0c4cda5b5a1ae04ab1f71a3cf6036</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/44746/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/44746/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14955" title="LNet: change use of fatal error flag for ni selection to be a part of health feature" class="issue-link" data-issue-key="LU-14955"><del>LU-14955</del></a> lnet: Use fatal NI if none other available<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: ff3322fd0c77a8042558711d9f410326d2aa6375</p> <p>Landed for 2.16</p> Related Development Rank 1|i022dj: Rank (Obsolete) 9223372036854775807