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-11121 Lustre <p>Call mdt_dom_check_and_discard() after mdt_object_unlock() to avoid possible deadlock if some third lock is conflicting with both like in the scenario below:</p> <ul> <li>thread1: mdt_object_lock() with some bits</li> <li>thread2: take conflicting lock and wait</li> <li>thread1: mdt_dom_check_and_discard() with bits conflicting with thread2 causes deadlock.</li> </ul> LU-11121

DoM: mdt take discard lock at cleanup stage

Technical task LU-10176 Minor Resolved Fixed Mikhail Pershin Joseph Gmitter DoM2 Thu, 5 Jul 2018 14:17:31 +0000 Tue, 21 Aug 2018 06:02:31 +0000 Sat, 18 Aug 2018 05:11:31 +0000 Lustre 2.12.0 0 2 <p>Patch is at <a href="https://review.whamcloud.com/#/c/29930/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/#/c/29930/</a></p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/29930/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/29930/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11121" title="DoM: mdt take discard lock at cleanup stage" class="issue-link" data-issue-key="LU-11121"><del>LU-11121</del></a> mdt: take discard lock at cleanup stage<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 2506fa2a42b7ae542fae9346a9cc8a6ae271f5de</p> <p>Landed for 2.12</p> <p>Mike Pershin (mpershin@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/33026" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33026</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11121" title="DoM: mdt take discard lock at cleanup stage" class="issue-link" data-issue-key="LU-11121"><del>LU-11121</del></a> mdt: discard data after all object are put<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: b9e8e2b076537c120778f2523d286df8040d04e7</p> Related LU-11270 Development Rank 1|hzzysf: Rank (Obsolete) 9223372036854775807