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-2494 Lustre <p>The following error message occurred in many tests which call wait_mds_ost_sync:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>CMD: fat-intel-3vm8 /usr/sbin/lctl get_param -n obdfilter.*.mds_sync fat-intel-3vm8: error: get_param: /proc/{fs,sys}/{lnet,lustre}/obdfilter/*/mds_sync: Found no match </pre> </div></div> <p><a href="https://maloo.whamcloud.com/test_sets/b9a24768-44a8-11e2-8c8b-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/b9a24768-44a8-11e2-8c8b-52540035b04c</a><br/> <a href="https://maloo.whamcloud.com/test_sets/5419a010-44aa-11e2-8c8b-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/5419a010-44aa-11e2-8c8b-52540035b04c</a><br/> <a href="https://maloo.whamcloud.com/test_sets/c923effc-44ad-11e2-8c8b-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/c923effc-44ad-11e2-8c8b-52540035b04c</a><br/> <a href="https://maloo.whamcloud.com/test_sets/34f7f994-44ae-11e2-8c8b-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/34f7f994-44ae-11e2-8c8b-52540035b04c</a><br/> <a href="https://maloo.whamcloud.com/test_sets/d0434e5c-44af-11e2-8c8b-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/d0434e5c-44af-11e2-8c8b-52540035b04c</a></p> Lustre Branch: master<br/> LU-2494

error: get_param: /proc/{fs,sys}/{lnet,lustre}/obdfilter/*/mds_sync: Found no match

Bug Blocker Resolved Fixed Bob Glossman Jian Yu HB Fri, 14 Dec 2012 04:24:48 +0000 Fri, 19 Apr 2013 22:41:16 +0000 Mon, 11 Feb 2013 14:27:29 +0000 Lustre 2.4.0 Lustre 2.4.0 0 7 <p>Bob</p> <p>Could you please look into this one?</p> <p>Thanks</p> <p>Peter</p> <p>This /proc var seems to have been entirely done away with in the conversion to osd. In previous revs there was an entry in lprocfs_filter_obd_vars[]</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> { "mds_sync", lprocfs_filter_rd_mds_sync, 0, 0}, </pre> </div></div> <p>This read out the value of obd-&gt;u.filter.fo_mds_ost_sync</p> <p>In current code it looks like obd-&gt;u.filter.fo_mds_ost_sync still exists, but nobody ever sets or clears it.</p> <p>There is no "mds_sync" entry in the closest equivalent I can find to lprocfs_filter_obd_vars[], namely lprocfs_osd_obd_vars[].</p> <p>Is there some other proc var now someplace else in /proc that fetches similar info from some new layer? The function seems to be lost from obdfilter entirely.</p> <p>Alex could you please comment on this? Thanks Peter</p> <p>right, because OSS does not drive recovery any more. it's all done on MDS and from OSS point of view this is a regular request.<br/> so, instead of looking for signs on OSS side, we should watch for all OSPs to get old_sync_processed=1</p> <p>change framework to look at old_sync_processed<br/> <a href="http://review.whamcloud.com/4885" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/4885</a></p> <p>Bob,<br/> while it is good to fix the test-framework.sh to check for the new parameter, but this parameter does not exist on older servers. Since the test-framework.sh runs from the client (which may be newer or older than the server), it needs to be able to work with the old-style /proc parameters as well.</p> <p>Could you please make another patch that adds a check for the old <tt>mds_sync</tt> file if <tt>old_sync_processed</tt> does not exist.</p> <p>interop support added<br/> <a href="http://review.whamcloud.com/5021" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/5021</a></p> <p>Patch landed to master.</p> Related LU-2620 Development Rank 1|hzvdu7: Rank (Obsolete) 5849 Severity