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-17219 Lustre <p>"lfs find" should have a printf option to be able to print extended attributes of files.</p> <p> </p> <p>There are some design questions about the correct way for this to work:</p> <ul> <li>which xattrs should actually get printed? Should it only print xattrs that are matched with a supplied "-xattr" argument? what if no xattr argument is supplied?</li> <li>if multiple xattrs are printed per file should they be newline separated, or separated with some other character?</li> <li>different formats for printing, e.g., text, hex, base64, etc?</li> </ul> <p> </p> <p>One of the main use cases for this would be printing job IDs for files that are matched with something like:<br/> lfs find -xattr "user.job=" /mnt/lustre</p> LU-17219

lfs find: add ability to print extended attributes

Improvement Minor Open Unresolved WC Triage Thomas Bertschinger Mon, 23 Oct 2023 15:27:20 +0000 Thu, 2 Nov 2023 15:53:46 +0000 0 3 <p>I'm thinking that the printing option should only print specific xattrs that are requested, though it would be possible to print all of the xattrs with a "<tt>&#42;</tt>" wildcard. One option is the xattr specified by "<tt>&#45;&#45;xattr</tt>", but that restricts the printing to specific xattrs that match a search criterion. That <em>might</em> be OK because why would we want to print an xattr that is not set on a file?</p> <p>That said, my preference would be to have an option like "<tt>&#45;&#45;printf %Lx:XATTR</tt>" to print <tt>XATTR</tt> as ASCII, and "<tt>&#45;&#45;printf %LX:XATTR</tt>" to print <tt>XATTR</tt> as hex. It isn't totally clear if we want to also print the xattr name, but that could be part of the explicit printf format, like "<tt>&#45;&#45;printf user.job=%Lx:XATTR</tt>" or similar. Alternately, there could be sub-options like "<tt>%Lxa:XATTR</tt>" to print the value in ASCII format, "<tt>%Lxh:XATTR</tt>" to print the value in hex, and "<tt>%Lxb</tt>" to print in base64. I don't think it makes sense to have a "<tt>%Lxn:XATTR</tt>" to print the xattr <b>name</b>, since that would just be <tt>XATTR</tt>, unless it is a glob pattern and we want to print the matching xattr names?</p> Related LU-15837 LU-15743 LU-13031 Development Rank 1|i03z7j: Rank (Obsolete) 9223372036854775807 Severity