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-12712 Lustre <p>Looking at the console log for MDSs when running sanity-pfl, we are seeing messages like</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[13646.271068] Lustre: 21851:0:(lod_lov.c:1358:lod_parse_striping()) lustre-MDT0001-mdtlov: not SEL magic on SEL file [0x240014454:0x77a:0x0]: bd30bd0 [13646.274907] Lustre: 21851:0:(lod_lov.c:1358:lod_parse_striping()) lustre-MDT0001-mdtlov: not SEL magic on SEL file [0x240014454:0x77a:0x0]: bd30bd0 </pre> </div></div> <p>We are seeing this for sanity-pfl tests 19e, 20b, 20c and 20d and when cleaning up after sanity-pfl.</p> <p>Examples of this message in the MDS (vm4 and vm5) console logs are at<br/> <a href="https://testing.whamcloud.com/test_sets/fedacd8c-c944-11e9-90ad-52540065bddc" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/fedacd8c-c944-11e9-90ad-52540065bddc</a><br/> <a href="https://testing.whamcloud.com/test_sets/b04ecaf6-c953-11e9-97d5-52540065bddc" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/b04ecaf6-c953-11e9-97d5-52540065bddc</a></p> LU-12712

sanity-pfl tests triggering “not SEL magic on SEL file”

Bug Minor Resolved Fixed Andreas Dilger James Nunez Wed, 28 Aug 2019 19:28:28 +0000 Wed, 15 Jan 2020 21:29:55 +0000 Wed, 9 Oct 2019 22:45:06 +0000 Lustre 2.13.0 Lustre 2.13.0 0 7 <p>Having taken a look at this, these are all of the sanity-pfl tests which have SEL &amp; replay in them.</p> <p>The issue seems to be this:<br/> <a href="https://review.whamcloud.com/#/c/35144/8/lustre/lod/lod_object.c@1551" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/#/c/35144/8/lustre/lod/lod_object.c@1551</a></p> <p>I'm hoping Vitaly can comment on why that line is there, because I can't see why it's there at all.</p> <p>Also, as noted there, I think once this warning is fixed, we should make it return an error or assert or something - It is an on disk format discrepancy, and the warning clearly isn't enough, because I believe it's been triggering ever since it was added.</p> <p><a href="https://jira.whamcloud.com/secure/ViewProfile.jspa?name=vitaly_fertman" class="user-hover" rel="vitaly_fertman">vitaly_fertman</a> Cory reported on the LWG call that you considered this to be a lower priority issue. As such is it ok for this test to be added to the always except list until it can be fixed properly in a future release?</p> <p>Looking at this more closely, it appears that there is just a bug in how the check is done for the error message, since it is checking the magic of the <b>component</b> (which is always <tt>LOV_MAGIC_V3</tt>) instead of the magic for the <b>file</b> (which should be <tt>LOV_MAGIC_SEL</tt>).</p> <p>That said, it isn't totally clear what can/should be done with this error message, if it should legitimately be hit in the field, as opposed to (IMHO) being spuriously printed because of a defect in the logic. Clearly it is a discrepancy in the on-disk format, but it doesn't appear to be harmful. However, it would be better if there was an LFSCK check for this and a repair, since no administrator would be able to fix this short of deleting the file, and it will just be console noise.</p> <p>Andreas Dilger (adilger@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/36351" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/36351</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-12712" title="sanity-pfl tests triggering “not SEL magic on SEL file”" class="issue-link" data-issue-key="LU-12712"><del>LU-12712</del></a> lod: fix warning message for non-SEL file<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: ecfc198003dba32d24805f2daa3fe8aa4d4706cb</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/36351/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/36351/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-12712" title="sanity-pfl tests triggering “not SEL magic on SEL file”" class="issue-link" data-issue-key="LU-12712"><del>LU-12712</del></a> lod: fix warning message for non-SEL file<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 544fd725dc5773aa8fdd931e04eb51d658ee1686</p> <p>Landed for 2.13</p> Related LU-10070 LU-13143 Development Rank 1|i00m0v: Rank (Obsolete) 9223372036854775807 Severity