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-373 Lustre Documentation <p>Hello. The current manual does not seem to contain a introduction to the extended attributes. As Andreas provided a list of xattrs, along with information about each, please add this information to the manual. In considering where would be best, my suggestion would be to add a new section, "1.3.2. Lustre Extended Attributes", just after 1.3.1. Lustre File System and Striping. In doing so, a link could quickly be made between the striping policies of 1.3.1, and the trusted.lov xattr associated with retaining the file/directory striping files. At that point, "all" the xattrs could be introduced. Further, indicating in 1.3.2 that chapter 18 - backup and restore (and maybe other chapters later) discusses xattrs, also. Just a suggestion...</p> <p>Provide by Andreas was:</p> <p>"trusted.lov" - holds layout for a regular file, or the directory default layout (== lustre.lov)<br/> "trusted.lma" - holds FID for current file, some flags<br/> "trusted.lmv" - holds layout for a striped directory (DNE 2), not present otherwise<br/> "trusted.link" - holds parent directory FID+filename for each link to a file (for lfs fid2path)</p> <p>Thanks!</p> LUDOC-373

Add information about Lustre xattrs

Improvement Trivial Open Unresolved Lustre Manual Triage Brett Lee easy Fri, 24 Mar 2017 00:59:17 +0000 Wed, 30 Aug 2023 19:27:27 +0000 0 6 <p>Brett, is there some chance you could take a crack at adding this to the manual yourself? This is described at:</p> <p> <a href="https://wiki.hpdd.intel.com/display/PUB/Making+changes+to+the+Lustre+Manual" class="external-link" target="_blank" rel="nofollow noopener">https://wiki.hpdd.intel.com/display/PUB/Making+changes+to+the+Lustre+Manual</a></p> <p>Arshad Hussain (arshad.hussain@aeoncomputing.com) uploaded a new patch: <a href="https://review.whamcloud.com/42108" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/42108</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-373" title="Add information about Lustre xattrs" class="issue-link" data-issue-key="LUDOC-373">LUDOC-373</a> manual: Add section on Lustre xattrs<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: cd7faface0039579d175d5c4c4687d71db275dab</p> <p>Andreas Dilger (adilger@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/42108/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/42108/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-373" title="Add information about Lustre xattrs" class="issue-link" data-issue-key="LUDOC-373">LUDOC-373</a> manual: Add section on Lustre xattrs<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 56db46d9a5fbb4dc2726b5723754a4afe7b5419d</p> <p>It would be useful to include entries for some of the remaining xattrs:</p> <ul class="alternate" type="square"> <li><tt>user.job</tt> holds jobid name that initially created the file (from <a href="https://jira.whamcloud.com/browse/LU-13031" title="store JobID of program that created file in inodes at create time" class="issue-link" data-issue-key="LU-13031"><del>LU-13031</del></a>)</li> <li><tt>trusted.dmv</tt> holds default directory layout inherited by new subdirectories</li> <li><tt>filter.fid</tt> on OST objects and holds back-pointer to MDT FID that contains object and layout information specific to that object</li> </ul> Related LU-13031 Development Rank 1|hzz86v: Rank (Obsolete) 9223372036854775807