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-17078 Lustre <p>When we're doing lockless IO on the client (eg, DIO), the server handles the LDLM locking.  This means acquiring and then cancelling the lock, since the server doesn't cache locks.  The specific problem is the server spins up a separate thread for each ldlm_bl, which takes a lot of time.  The client does this because the lock may cover a significant amount of cached data, and cancelling it in the client thread context can create significant delays.</p> <p>But the server doesn't cache anything, so allow the lock to be destroyed immediately.</p> LU-17078

do not wake up an ldlm_bl thread for local locks

Improvement Minor Resolved Fixed Patrick Farrell Patrick Farrell Fri, 1 Sep 2023 13:55:56 +0000 Sun, 4 Feb 2024 14:30:58 +0000 Sun, 4 Feb 2024 14:30:58 +0000 Lustre 2.16.0 0 2 <p><a href="https://review.whamcloud.com/c/fs/lustre-release/+/52192" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/52192</a></p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/52192/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/52192/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17078" title="do not wake up an ldlm_bl thread for local locks" class="issue-link" data-issue-key="LU-17078"><del>LU-17078</del></a> ldlm: do not spin up thread for local cancels<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 291ac6e6925e3bdf31f527de2bedf5f19706b230</p> <p>Merged for 2.16</p> Related Development Rank 1|i03ufz: Rank (Obsolete) 9223372036854775807 Severity