Whamcloud Community JIRA https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 [LU-16697] Lustre should set appropriate BDI_CAP_* and s_iflags for writeback and cgroup wb https://jira.whamcloud.com/browse/LU-16697 Lustre <p>Lustre should set appropriate BDI_CAP_* and s_iflags for writeback and cgroup wb</p> LU-16697 Lustre should set appropriate BDI_CAP_* and s_iflags for writeback and cgroup wb Bug Minor Resolved Fixed Shaun Tancheff Shaun Tancheff Sat, 1 Apr 2023 08:23:18 +0000 Fri, 28 Jul 2023 01:06:37 +0000 Sun, 9 Jul 2023 14:26:05 +0000 Lustre 2.16.0 0 6 <p>"Shaun Tancheff &lt;shaun.tancheff@hpe.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/50497" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/50497</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16697" title="Lustre should set appropriate BDI_CAP_* and s_iflags for writeback and cgroup wb" class="issue-link" data-issue-key="LU-16697"><del>LU-16697</del></a> llite: Set BDI_CAP_* flags for lustre<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 33896b62aa39e271cdcd4fdc4adb84a3849bdca1</p> <p>Shaun,</p> <p>Check out <a href="https://jira.whamcloud.com/browse/LU-16680" title="add lowmem sync feature" class="issue-link" data-issue-key="LU-16680">LU-16680</a>.  This solves the problem of Lustre working well with cgroups <b>and</b> general memory pressure without subjecting us to the kernel writeback limits, which were a huge problem in the past:</p> <p><a href="https://review.whamcloud.com/c/fs/lustre-release/+/50460" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/50460</a></p> <p>Patrick, do you have a reference on previous problems with the kernel writeback limits? I'm wondering if they show tests and/or monitors we could use to usefully test these new patches? </p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/50497/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/50497/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16697" title="Lustre should set appropriate BDI_CAP_* and s_iflags for writeback and cgroup wb" class="issue-link" data-issue-key="LU-16697"><del>LU-16697</del></a> llite: Set BDI_CAP_* flags for lustre<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: f5a75ea44db32ac27ada327b4752c3bc611cf9df</p> <p>Landed for 2.16</p> Related LU-16680 LU-16696 LU-16954 LU-16713 Development Rank 1|i03htr: Rank (Obsolete) 9223372036854775807 Severity