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-11672 Lustre <p>currently lru_max_age only works when lru is enabled. </p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>applied https://review.whamcloud.com/33371 otherwise we can't contorl number of locks correclty # lctl set_param ldlm.namespaces.*.lru_max_age=60000 # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=1 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 # ls -lR /fls/ost0/ # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=3199 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 wait 120 sec # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=3199 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 no cancel locks even time exceeds more than lru_max_age, but cancel when client access an file. # ls -l /fls/ost0/o0/d110838 -rw-r--r-- 1 root root 67108864 Oct 22 13:51 /fls/ost0/o0/d110838 # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=2072 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=2792 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 # ls -l /fls/ost0/o0/d111531 -rw-r--r-- 1 root root 67108864 Oct 22 13:53 /fls/ost0/o0/d111531 # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=1696 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=2385 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 </pre> </div></div> <p>lru_max_age should behave same as enabling lru resize. at the end, regardless enabling or disabling lru resize meaning once it gets lru_max_age, locks need to be cancelled At the end, lru_size is like hard limit of number of locks, but still cancel locks by lru_max_age.</p> 2.11.56 LU-11672

improving lru_max_age policy when lru resize is disabled

Bug Minor Resolved Fixed Gu Zheng Shuichi Ihara Thu, 15 Nov 2018 18:47:38 +0000 Tue, 9 Jun 2020 14:48:37 +0000 Sun, 21 Jul 2019 04:11:57 +0000 Lustre 2.13.0 Lustre 2.12.3 0 5 <p>I agree - I didn't even know that this was the case, and I expect that making this change is fairly easy.</p> <p>On a related note, it is possible since 2.9 or so to use "lru_max_age=20s" so that the units are seconds.</p> <p>Gu Zheng (gzheng@ddn.com) uploaded a new patch: <a href="https://review.whamcloud.com/35467" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/35467</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11672" title="improving lru_max_age policy when lru resize is disabled" class="issue-link" data-issue-key="LU-11672"><del>LU-11672</del></a> ldlm/pool: awalys cancel aged locks regardless enabling or disabling lru resize<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: b819f1914a49ccb9944ef90465c16c8baec2a9dc</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/35467/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/35467/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11672" title="improving lru_max_age policy when lru resize is disabled" class="issue-link" data-issue-key="LU-11672"><del>LU-11672</del></a> ldlm: awalys cancel aged locks regardless enabling or disabling lru resize<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: e4c490bac7701435cb08ce444d9b23b8fd1dd839</p> <p>Landed for 2.13</p> <p>Minh Diep (mdiep@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/35660" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/35660</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11672" title="improving lru_max_age policy when lru resize is disabled" class="issue-link" data-issue-key="LU-11672"><del>LU-11672</del></a> ldlm: awalys cancel aged locks regardless enabling or disabling lru resize<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: 1<br/> Commit: 59dacdf2f97acc2613c66f9734ac6b14199e1d28</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/35660/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/35660/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11672" title="improving lru_max_age policy when lru resize is disabled" class="issue-link" data-issue-key="LU-11672"><del>LU-11672</del></a> ldlm: awalys cancel aged locks regardless enabling or disabling lru resize<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: <br/> Commit: 67e3ad553c3e0d6759402692a0f0a51fe42191e6</p> Related LU-6529 Development Rank 1|i006hb: Rank (Obsolete) 9223372036854775807 Severity