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-13804 Lustre <p>jet1 console log reports the following during an I/O SWL (and a few other misc jobs) on Opal:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>Jul 15 09:51:54 jet1 kernel: LustreError: 1391:0:(osd_index.c:1201:osd_dir_delete()) lquake-MDT0000: failed to destroy agent object (0) for the entry data049: rc = -22 Jul 15 09:51:54 jet1 kernel: LustreError: 1391:0:(osd_index.c:1201:osd_dir_delete()) Skipped 1 previous similar message Jul 15 09:51:54 jet1 kernel: LustreError: 17478:0:(osd_index.c:1201:osd_dir_delete()) lquake-MDT0000: failed to destroy agent object (0) for the entry data026: rc = -22 Jul 15 09:51:54 jet1 kernel: LustreError: 17478:0:(osd_index.c:1201:osd_dir_delete()) Skipped 75 previous similar messages </pre> </div></div> <p>There were no console log messages on Opal that appeared to correspond.  No messages at 09:51, and no unusual messages at all on opal.</p> <p>Testing both under Lustre 2.10 and Lustre 2.12 included creating striped directories via <tt>lfs mkdir -i3 -c4 &lt;target&gt;</tt>. Some of these directories were likely created under 2.10 and deleted under 2.12.</p> <p>Before this occurred, the jet servers had been upgraded from Lustre 2.10 to Lustre 2.12, then downgraded to 2.10, and then upgraded to 2.12 again. Significant I/O was performed between each Lustre version, and changelog users were deregistered and logs cleared.</p> Lustre 2.10.8 and 2.12.5 <br/> RHEL 7.8 LU-13804

LustreError (osd_index.c:1201:osd_dir_delete()) lquake-MDT0000: failed to destroy agent object (0) for the entry data049: rc = -22

Bug Minor Resolved Not a Bug Lai Siyao Olaf Faaland llnl Mon, 20 Jul 2020 17:34:25 +0000 Fri, 20 Oct 2023 21:03:34 +0000 Wed, 22 Jul 2020 15:55:29 +0000 0 6 <p>The osd_dir_delete() CERROR was added after 2.10 branched. The commit is</p> <ul> <li>c0a455e <a href="https://jira.whamcloud.com/browse/LU-10190" title="Agent object for cross-MDTs reference" class="issue-link" data-issue-key="LU-10190"><del>LU-10190</del></a> osd-zfs: create agent object for remote object</li> </ul> <p>Based on the commit message, I believe it's possible that creating remote objects under lustre 2.10, and then deleting them under 2.12, would trigger this error message.</p> <p>Reaching this error message does not result in osd_dir_delete() returning early or returning an error.</p> <p>So this seems like this is harmless (IE does not indicate damage to the file system). And it also seems like it is explained by my downgrade-then-upgrade.</p> <p>Please confirm, thanks.</p> <p>Note this was performed on our staging file system, not a production one; but we are about to put Lustre 2.12.5 on all our file systems, so I'm working through error messages to minimize risk.</p> <p>Lai</p> <p>Could you please advise?</p> <p>Thanks</p> <p>Peter</p> <p>Yes, it's exactly what you described.</p> <p>Thank you</p> Development Rank 1|i015k7: Rank (Obsolete) 9223372036854775807 Severity