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-11811 Lustre <p>There was an outage on our site where a script was deleting tons of valuable data from Lustre file systems. It takes some times to figure out the problematic script and kill it.</p> <p>It seems like Lustre lacks of a functionality to set the whole file system into readonly mode, which is useful in this case because it can help stop bleeding immediately.</p> LU-11811

Provide an interface to set Lustre MDT into readonly mode

Improvement Critical Resolved Fixed Jinshan Xiong Jinshan Xiong Tue, 18 Dec 2018 19:45:37 +0000 Thu, 19 May 2022 04:38:27 +0000 Thu, 8 Aug 2019 18:24:18 +0000 Lustre 2.13.0 Lustre 2.13.0 0 5 <p><tt>pdsh &#45;w mgs_server lctl &#42;.&#42;.$FSNAME&#42;&#45;.active=0"</tt></p> <p>Jinshan Xiong (jinshan.xiong@gmail.com) uploaded a new patch: <a href="https://review.whamcloud.com/33892" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33892</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11811" title="Provide an interface to set Lustre MDT into readonly mode" class="issue-link" data-issue-key="LU-11811"><del>LU-11811</del></a> mdt: Add a proc entry to set MDT to readonly<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: c87bdcfab1cdea0e1fe0b2d41f8ea513c65bfc0e</p> <blockquote> <p><tt>pdsh &#45;w mgs_server "lctl &#42;.&#42;.$FSNAME&#42;&#45;.active=0"</tt></p></blockquote> <p>I don't think this would make a difference? While it would make the OSTs inactive on the MGS (or maybe the MDS also, if they are the same machine), this would only stop the <em>objects</em> from being destroyed. It wouldn't stop the MDS from deleting the filenames from the filesystem, including the layout xattrs, and the pending-unlink OST objects would mostly be useless even if the data is still on the OSTs.</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/33892/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33892/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11811" title="Provide an interface to set Lustre MDT into readonly mode" class="issue-link" data-issue-key="LU-11811"><del>LU-11811</del></a> mdt: Add a proc entry to set MDT to readonly<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 23bae7dc21b5c955c096431d485e49a7298ec404</p> <p>Landed for 2.13</p> <p>I don't think there was an update to the manual to document this new functionality.</p> <p>Shouldn't that be tracked under an LUDOC ticket?</p> <p>Peter, we can't track LUDOC tickets against the 2.13 release in Jira, AFAIK.</p> <p>We easily can - <a href="https://jira.whamcloud.com/projects/LUDOC/versions/14590" class="external-link" rel="nofollow">https://jira.whamcloud.com/projects/LUDOC/versions/14590</a></p> <p>Added <a href="https://jira.whamcloud.com/browse/LUDOC-455" title="Document mdt.*.readonly parameter" class="issue-link" data-issue-key="LUDOC-455"><del>LUDOC-455</del></a> to track the manual additions for this feature.</p> Cloners LU-12515 Related LU-12995 Development Rank 1|i008d3: Rank (Obsolete) 9223372036854775807 Severity