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-13300 Lustre <p>We see serious extent status shrink problem on some customer sites,<br/> the backtrace could be:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> NMI watchdog: BUG: soft lockup - CPU#6 stuck for 22s! [kswapd0:106] [&lt;ffffffffae1958c2&gt;] merge+0x62/0xc0 [&lt;ffffffffc123fc50&gt;] ? ldiskfs_init_inode_table+0x410/0x410 [ldiskfs] [&lt;ffffffffae1959bb&gt;] list_sort+0x9b/0x250 [&lt;ffffffffc124014e&gt;] __ldiskfs_es_shrink+0x1ce/0x2a0 [ldiskfs] [&lt;ffffffffc12402d4&gt;] ldiskfs_es_shrink+0xb4/0x130 [ldiskfs] [&lt;ffffffffadfcf805&gt;] shrink_slab+0x175/0x340 [&lt;ffffffffae03e1d7&gt;] ? vmpressure+0x87/0x90 [&lt;ffffffffadfd3538&gt;] balance_pgdat+0x3a8/0x5e0 </pre> </div></div> <p>There are some patches in the linux upstream which could significantly improve this case</p> LU-13300

Improve ext4 extent status memory shrink for centos7

Bug Minor Resolved Fixed Wang Shilong Wang Shilong Thu, 27 Feb 2020 09:33:31 +0000 Wed, 17 Feb 2021 22:28:50 +0000 Sun, 2 Aug 2020 11:18:52 +0000 Lustre 2.14.0 0 3 <p>Wang Shilong (wshilong@ddn.com) uploaded a new patch: <a href="https://review.whamcloud.com/37749" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/37749</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13300" title="Improve ext4 extent status memory shrink for centos7" class="issue-link" data-issue-key="LU-13300"><del>LU-13300</del></a> ldiskfs: port patches to improve extent status shrink<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 858d32011c849bea598517703bc1c569e555bf82</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/37749/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/37749/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13300" title="Improve ext4 extent status memory shrink for centos7" class="issue-link" data-issue-key="LU-13300"><del>LU-13300</del></a> ldiskfs: port patches to improve extent status shrink<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: cc058b253ac7987a8350880e1c34a39cdf0625e8</p> Related Development Rank 1|i00uf3: Rank (Obsolete) 9223372036854775807 Severity