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-4748 Lustre <p>While running sanity test 116b with MDSCOUNT=4, it failed as follows:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>== sanity test 116b: QoS shouldn't LBUG if not enough OSTs found on the 2nd pass == 07:33:42 (1394462022) CMD: shadow-26vm12 lctl get_param -n lov.*mdtlov*.qos_threshold_rr CMD: shadow-26vm12 lctl set_param lov.*mdtlov*.qos_threshold_rr 0 lov.lustre-MDT0000-mdtlov.qos_threshold_rr=0 lov.lustre-MDT0001-mdtlov.qos_threshold_rr=0 lov.lustre-MDT0002-mdtlov.qos_threshold_rr=0 lov.lustre-MDT0003-mdtlov.qos_threshold_rr=0 CMD: shadow-26vm12 lctl set_param fail_loc=0x147 fail_loc=0x147 total: 20 creates in 0.09 seconds: 228.53 creates/second CMD: shadow-26vm12 lctl set_param fail_loc=0 fail_loc=0 CMD: shadow-26vm12 lctl set_param lov.*mdtlov*.qos_threshold_rr 17% 17% 17% 17% shadow-26vm12: error: set_param: /proc/{fs,sys}/{lnet,lustre}/17%: Found no match lov.lustre-MDT0000-mdtlov.qos_threshold_rr=17% lov.lustre-MDT0001-mdtlov.qos_threshold_rr=17% lov.lustre-MDT0002-mdtlov.qos_threshold_rr=17% lov.lustre-MDT0003-mdtlov.qos_threshold_rr=17% sanity test_116b: @@@@@@ FAIL: test_116b failed with 3 </pre> </div></div> <p>Maloo report: <a href="https://maloo.whamcloud.com/test_sets/9d5c1624-a861-11e3-a16f-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/9d5c1624-a861-11e3-a16f-52540035b04c</a></p> <p>The same test passed with MDSCOUNT=2.</p> <br/> Lustre Build: <a href="http://build.whamcloud.com/job/lustre-b2_5/40/">http://build.whamcloud.com/job/lustre-b2_5/40/</a><br/> Distro/Arch: RHEL6.5/x86_64<br/> MDSCOUNT=4<br/> LU-4748

sanity test 116b: error: set_param: /proc/{fs,sys}/{lnet,lustre}/17%: Found no match

Bug Critical Resolved Fixed Emoly Liu Jian Yu Tue, 11 Mar 2014 08:10:08 +0000 Wed, 28 May 2014 07:11:09 +0000 Thu, 20 Mar 2014 15:32:39 +0000 Lustre 2.6.0 Lustre 2.5.1 Lustre 2.6.0 Lustre 2.5.2 0 7 <p>Guidance from Di</p> <p>"If the failure caused by resetting the original threadhold_rr,<br/> do_facet $SINGLEMDS lctl set_param lov.<b>mdtlov</b>.qos_threshold_rr $old_rr<br/> probably we need add true at the end of the test. Though I did not check why "reset threashold_rr" is failed."</p> <p>There is a problem in test script when getting $old_rr.</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">old_rr=$(do_facet $SINGLEMDS lctl get_param -n lov.*mdtlov*.qos_threshold_rr) [root@centos6-1 tests]# ../utils/lctl get_param -n lov.*mdtlov*.qos_threshold_rr 17% 17% 17% 17% [root@centos6-1 tests]# ../utils/lctl get_param lov.*mdtlov*.qos_threshold_rr lov.lustre-MDT0000-mdtlov.qos_threshold_rr=17% lov.lustre-MDT0001-mdtlov.qos_threshold_rr=17% lov.lustre-MDT0002-mdtlov.qos_threshold_rr=17% lov.lustre-MDT0003-mdtlov.qos_threshold_rr=17% </pre> </div></div> <p>Since the value is wrong, when we reset threshold_rr, the error happened. </p> <p>BTW, I tried MDSCOUNT=2, it really did pass. I think there is something improper in parsing parameters format.</p> <p>I will push a patch to fix $old_rr first, and then work on the parameters format.</p> <p>The patch to fix $old_rr is here: <a href="http://review.whamcloud.com/9580" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/9580</a></p> <p>backport to b2_5: <a href="http://review.whamcloud.com/9636" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/9636</a></p> <blockquote> <p>BTW, I tried MDSCOUNT=2, it really did pass. I think there is something improper in parsing parameters format.</p></blockquote> <p>I created another ticket <a href="https://jira.whamcloud.com/browse/LU-4762" title="lctl set_param should return error when the value of the parameter is null" class="issue-link" data-issue-key="LU-4762"><del>LU-4762</del></a> to adress the parameter format issue in "lctl set_param"</p> <p>Patch landed to Master. Additional patch will be back ported soon.</p> <p>Patch landed to b2_5 for 2.5.2.</p> Related LU-4762 Development Rank 1|hzwhfb: Rank (Obsolete) 13069 Severity