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-2776 Lustre <p>This issue was created by maloo for Nathaniel Clark &lt;nathaniel.l.clark@intel.com&gt;</p> <p>This issue relates to the following test suite run: <a href="https://maloo.whamcloud.com/test_sets/5c072382-70f7-11e2-9241-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/5c072382-70f7-11e2-9241-52540035b04c</a>.</p> <p>The sub-test test_51a failed with the following error:</p> <blockquote> <p>multiop is still there</p></blockquote> <p>Info required for matching: sanityn 51a</p> LU-2776

Test failure: sanityn, subtest test_51a "multiop is still there"

Bug Major Resolved Fixed Jinshan Xiong Maloo zfs Thu, 7 Feb 2013 09:22:08 +0000 Fri, 22 Dec 2017 10:32:54 +0000 Sun, 10 Sep 2017 14:47:21 +0000 Lustre 2.4.0 Lustre 2.5.0 Lustre 2.4.0 Lustre 2.11.0 0 9 <p>My first guess is that this test might be racy. There is only a 0.1s margin for multiop to </p> {fork, exec, sleep, wake, read} <p> while the "dd" is ongoing, so this could fail on occasion. Could you try bumping this margin to 0.5s, and hopefully this race will disappear.</p> <p>Jinshan, could you please comment on the intent of this test? Will increasing the margin ruin the test?</p> <p>I was going to say that this test seemed racy, and it passes on my local VMs.</p> <p>Hi Andreas, it turns out your guess is right. From the log, the read was started after sleeping 2 seconds. I will fix it.</p> <p>patch is at: <a href="http://review.whamcloud.com/5321" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/5321</a></p> <p>Landed for 2.4</p> <p>Even though this bug is closed I think I see a fresh instance in <a href="https://maloo.whamcloud.com/test_sets/7548a8bc-9fcc-11e2-86dc-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/7548a8bc-9fcc-11e2-86dc-52540035b04c</a></p> <p>Is this the same bug, or should I open a fresh bug report?</p> <p>let's reopen it.</p> <p>Just hit one more occurence in <a href="https://maloo.whamcloud.com/test_sets/aa92a7ca-de1a-11e2-b04c-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/aa92a7ca-de1a-11e2-b04c-52540035b04c</a>, with the new sleep 1s from the patch.</p> <p>I am wondering if multiop is stuck somewhere, is there a way we get a full backtraces dump from this specific test, like for time-outs ??</p> <p>Another occurrence:</p> <p><a href="https://maloo.whamcloud.com/test_sets/3c2b25fe-e08c-11e2-b3fd-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/3c2b25fe-e08c-11e2-b3fd-52540035b04c</a></p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>test_51a Error: 'multiop is still there' Failure Rate: 28.00% of last 100 executions [all branches] </pre> </div></div> <p>This seems to be hitting a bit. </p> <p>Yang Sheng (yang.sheng@intel.com) uploaded a new patch: <a href="https://review.whamcloud.com/27662" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/27662</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-2776" title="Test failure: sanityn, subtest test_51a &quot;multiop is still there&quot;" class="issue-link" data-issue-key="LU-2776"><del>LU-2776</del></a> tests: waiting multiop finished in sanityn:51a<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 2426f20903fda471a7dfb33b66df4da4e9de88cb</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="https://review.whamcloud.com/27662/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/27662/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-2776" title="Test failure: sanityn, subtest test_51a &quot;multiop is still there&quot;" class="issue-link" data-issue-key="LU-2776"><del>LU-2776</del></a> tests: waiting multiop finished in sanityn:51a<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 9b63762c47732b8d3cb17935d528e0c0fad814db</p> <p>Landed for 2.11</p> Related Development Rank 1|hzvit3: Rank (Obsolete) 6729 Severity