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-6010 Lustre <p>if lnet is not brought down properly (IE: lctl network down or lnetctl lnet unconfigure), then LNetFini():LASSERT(the_lnet.ln_refcount == 0); is hit. We need to modify this assert to account for this scenario. This wasn't a problem before because a network was always loaded irregardless. and LNetNIFini() was always called to set ln_refcoutn to 0</p> LU-6010

DLC: LNetFini() assert is hit if lustre_rmmod without bringing down NI

Bug Critical Resolved Fixed Amir Shehata Amir Shehata HB Tue, 9 Dec 2014 22:19:07 +0000 Sun, 8 Feb 2015 04:55:04 +0000 Sun, 8 Feb 2015 04:55:04 +0000 Lustre 2.7.0 Lustre 2.7.0 0 6 <p>Here are the use cases for loading/unloading LNet, and which ones correspond to this issue:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">Use Case 1 Configure LNet with no mod NI -&gt; initializes NI Dynamically add NIs Unconfigure LNet -&gt; uninitializes NI lustre_rmmod Use Case 2 Configure LNet with no mod NI Unconfigure LNet lustre_rmmod Use Case 3 Configure LNet with no mod NI lustre_rmmod --&gt; LU-6010 Use Case 4 Configure LNet with mod NI Dynamically add NIs Unconfigure LNet lustre_rmmod Use Case 5 Configure LNet with mod NI Dynamically del all NIs Unconfigure LNet lustre_rmmod Use Case 6 Configure LNet with mod NI Dynamically del all NIs lustre_rmmod --&gt; LU-6010 MODULE and LNet interaction -&gt; can not dynamically add NIs from a different module has to be from IOCTL Use Case 7 Module X: Configure LNet with mod NI Module Y: Configure LNet with mod NI MODULE X: Unconfigure LNet MODULE Y: Unconfigure LNet lustre_rmmod Use Case 8 Module X: Configure LNet with mod NI Module Y: Configure LNet with mod NI MODULE Y: Unconfigure LNet lustre_rmmod -&gt; lnet in use error Use Case 9 Module X: Configure LNet with mod NI Module Y: Configure LNet with mod NI lustre_rmmod -&gt; lnet in use error </pre> </div></div> <p>Amir Shehata (amir.shehata@intel.com) uploaded a new patch: <a href="http://review.whamcloud.com/13110" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/13110</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-6010" title="DLC: LNetFini() assert is hit if lustre_rmmod without bringing down NI" class="issue-link" data-issue-key="LU-6010"><del>LU-6010</del></a> lnet: prevent assert on LNet module unload<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 1262d8f1188c3b610354908a0049a8effe0af314</p> <p>Isn't the "Use Case 3/6" illegal uses of DLC? The user should NOT be allowed to remove the lnet module if DLC configure has been called successfully but DLC unconfigure has not been called yet.</p> <p>I think the correct action for "Use Case 3/6" is to prevent the lnet module to be unloaded - i.e. to enforce the correct DLC usage in "Use Case 5". In other words, it should be handled the same way as in "Use Case 8", fail with "lnet in use error".</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/13110/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/13110/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-6010" title="DLC: LNetFini() assert is hit if lustre_rmmod without bringing down NI" class="issue-link" data-issue-key="LU-6010"><del>LU-6010</del></a> lnet: prevent assert on LNet module unload<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: f1a2e6107c124d010d89973cfd716fbd17b689f0</p> <p>Landed for 2.7</p> Development Rank 1|hzx27j: Rank (Obsolete) 16752 Severity