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/LUDOC-331 Lustre Documentation <p>This section needs to be reviewed to ensure accuracy:</p> <p><a href="https://build.hpdd.intel.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#dbdoclet.50438256_31079" class="external-link" target="_blank" rel="nofollow noopener">https://build.hpdd.intel.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#dbdoclet.50438256_31079</a></p> <p>The new MDT default inode size is 2K. I am trying to discover when the default change was made.</p> LUDOC-331

record new default for inode size on MDT is 2K

Bug Minor Resolved Fixed Lustre Manual Triage Richard Henwood Mon, 28 Mar 2016 13:39:40 +0000 Sat, 11 Mar 2017 10:18:46 +0000 Sat, 11 Mar 2017 10:18:46 +0000 0 4 <p>This change was made in commit 2.0.60.0-8-geb012d4, so 2048 bytes per inode has been the default since Lustre 2.1.0.</p> <p>To be clear, there are two separate parameters related to inode size for ldiskfs:</p> <ul class="alternate" type="square"> <li>inode_size (<tt>-I</tt>): controls how large the inode structure is, which affects how much extra space there is for extended attributes (layout, etc) in the inode. The default inode size is 512 bytes, which is typically enough for a 4-stripe file. Must be a power-of-two value.</li> <li>bytes_per_inode (<tt>-i</tt>): controls how many inodes are created in the filesystem as a ratio of (filesystem size / inode count). The default is 2048 bytes per inode (actually inode_size + 1536), or in other words one inode for every 2KB of the block device. Must be a power-of-two value.</li> </ul> <p>e2fsprogs-1.42.13.wc4-7.el7.x86_64</p> <p>When building an MDT with 100% default options my inodes size came out to be 512. Please double check this info before updating the manual. </p> <p>Andreas Dilger (andreas.dilger@intel.com) uploaded a new patch: <a href="http://review.whamcloud.com/19786" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19786</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-331" title="record new default for inode size on MDT is 2K" class="issue-link" data-issue-key="LUDOC-331"><del>LUDOC-331</del></a> setup: explain ldiskfs inode size/ratio better<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: be913d9c1b4c411ab2a56c3c9a4634467cb43c9e</p> <p>Andreas Dilger (andreas.dilger@intel.com) merged in patch <a href="http://review.whamcloud.com/19786/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/19786/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-331" title="record new default for inode size on MDT is 2K" class="issue-link" data-issue-key="LUDOC-331"><del>LUDOC-331</del></a> setup: explain ldiskfs inode size/ratio better<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 183c459f8a4370b70d039fb30711de20cadbdce1</p> <p>Andreas Dilger (andreas.dilger@intel.com) uploaded a new patch: <a href="http://review.whamcloud.com/21262" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/21262</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-331" title="record new default for inode size on MDT is 2K" class="issue-link" data-issue-key="LUDOC-331"><del>LUDOC-331</del></a> setup: improve ldiskfs formatting options<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 2f3e643b8129e0f0210cd95fc0f38b52c596d2d8</p> <p>Andreas Dilger (andreas.dilger@intel.com) merged in patch <a href="http://review.whamcloud.com/21262/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/21262/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-331" title="record new default for inode size on MDT is 2K" class="issue-link" data-issue-key="LUDOC-331"><del>LUDOC-331</del></a> setup: improve ldiskfs formatting options<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 8c05589f167ff34ab9806f29ecfb92d424f65739</p> Development Rank 1|hzy5tr: Rank (Obsolete) 9223372036854775807 Severity