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-5075 Lustre <p>This issue was created by maloo for wangdi &lt;di.wang@intel.com&gt;</p> <p>This issue relates to the following test suite run: <a href="http://maloo.whamcloud.com/test_sets/ffe8ec08-dd4b-11e3-9f1e-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">http://maloo.whamcloud.com/test_sets/ffe8ec08-dd4b-11e3-9f1e-52540035b04c</a>.</p> <p>The sub-test test_8 failed with the following error:</p> <blockquote> <p>(21) Fail to start LFSCK for namespace!</p></blockquote> <p>Info required for matching: sanity-lfsck 8</p> LU-5075

Test failure on test suite sanity-lfsck, subtest test_8 Fail to start LFSCK for namespace!

Bug Minor Resolved Fixed nasf Maloo Sat, 17 May 2014 01:14:43 +0000 Mon, 25 Aug 2014 23:18:12 +0000 Mon, 25 Aug 2014 23:18:12 +0000 Lustre 2.7.0 0 5 <p>Looks like MDT0001 was evicted by MDT0000 just before the LFSCK started, which caused it to fail. </p> <p>The eviction is not the root reason for test_8 failure, because test_8 only start namespace LFSCK on the MDT0, so as long as MDT0 works well, the test should work.</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> echo <span class="code-quote">"stop $SINGLEMDS"</span> stop $SINGLEMDS &gt; /dev/<span class="code-keyword">null</span> || error <span class="code-quote">"(18) Fail to stop MDS!"</span> #define OBD_FAIL_LFSCK_NO_AUTO 0x160b (1) ===&gt; do_facet $SINGLEMDS $LCTL set_param fail_loc=0x160b echo <span class="code-quote">"start $SINGLEMDS"</span> (2) ===&gt; start $SINGLEMDS $MDT_DEVNAME $MOUNT_OPTS_SCRUB &gt; /dev/<span class="code-keyword">null</span> || error <span class="code-quote">"(19) Fail to start MDS!"</span> (3)===&gt; STATUS=$($SHOW_NAMESPACE | awk <span class="code-quote">'/^status/ { print $2 }'</span>) [ <span class="code-quote">"$STATUS"</span> == <span class="code-quote">"paused"</span> ] || error <span class="code-quote">"(20) Expect <span class="code-quote">'paused'</span>, but got <span class="code-quote">'$STATUS'</span>"</span> #define OBD_FAIL_LFSCK_DELAY3 0x1602 (4)===&gt; do_facet $SINGLEMDS $LCTL set_param fail_val=2 fail_loc=0x1602 (5)===&gt; $START_NAMESPACE || error <span class="code-quote">"(21) Fail to start LFSCK <span class="code-keyword">for</span> namespace!"</span> </pre> </div></div> <p>As shown above, before restart the MDS at point (2), the test sets the fail_loc=0x160b at point (1) to prevent the LFSCK to be restarted automatically. But the LFSCK restart will be called after the recovery. There is race condition that when the test moves to the point (3), the recovery is not completed yet, so the check at the point (3) is passed, and then the tests resets the fail_loc=0x1602 at the point (4), after such reset, the recovery completed, because the fail_loc has been reset, so the LFSCK can be restarted automatically successfully, so when the test moves to the point (5), it will find the LFSCK is in running already.</p> <p>I will make patch to fix the race in the test scripts.</p> <p>Here is the patch:</p> <p><a href="http://review.whamcloud.com/11288" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/11288</a></p> <p>More instances on master branch:<br/> <a href="https://testing.hpdd.intel.com/test_sets/bbef6d96-244b-11e4-abce-5254006e85c2" class="external-link" target="_blank" rel="nofollow noopener">https://testing.hpdd.intel.com/test_sets/bbef6d96-244b-11e4-abce-5254006e85c2</a><br/> <a href="https://testing.hpdd.intel.com/test_sets/5d21bc2c-2754-11e4-84f2-5254006e85c2" class="external-link" target="_blank" rel="nofollow noopener">https://testing.hpdd.intel.com/test_sets/5d21bc2c-2754-11e4-84f2-5254006e85c2</a></p> <p>This is blocking patch to pass review testing.</p> <p>The patch has been landed to master.</p> Duplicate LU-5143 Development Rank 1|hzwmof: Rank (Obsolete) 14009 Severity