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-11109 Lustre <p>When xattr caching is disabled or bypassed extended attributes with zero length values are not handled correctly:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>o:~# cd /mnt/lustre o:lustre# lctl set_param llite.*.xattr_cache=1 llite.lustre-ffff8c4ac8a60000.xattr_cache=1 o:lustre# rm -f f0 o:lustre# touch f0 o:lustre# setfattr -n user.blah f0 o:lustre# getfattr -d -m- f0 # file: f0 lustre.lov=0s0AvRCwEAAAADAAAAAAAAAAEEAAACAAAAAAAQAAEAAAADAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= trusted.link=0s3/HqEQEAAAAsAAAAAAAAAAAAAAAAAAAAABQAAAACAAAABwAAAAEAAAAAZjA= trusted.lma=0sAAAAAAAAAAABBAAAAgAAAAMAAAAAAAAA trusted.lov=0s0AvRCwEAAAADAAAAAAAAAAEEAAACAAAAAAAQAAEAAAADAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= trusted.version=0sDAAAAAEAAAA= user.blah o:lustre# lctl set_param llite.*.xattr_cache=0 llite.lustre-ffff8c4ac8a60000.xattr_cache=0 o:lustre# getfattr -d -m- f0 # file: f0 lustre.lov=0s0AvRCwEAAAADAAAAAAAAAAEEAAACAAAAAAAQAAEAAAADAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= trusted.link=0s3/HqEQEAAAAsAAAAAAAAAAAAAAAAAAAAABQAAAACAAAABwAAAAEAAAAAZjA= trusted.lma=0sAAAAAAAAAAABBAAAAgAAAAMAAAAAAAAA trusted.lov=0s0AvRCwEAAAADAAAAAAAAAAEEAAACAAAAAAAQAAEAAAADAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= trusted.version=0sDAAAAAEAAAA= f0: user.blah: No such attribute </pre> </div></div> <p>I noticed this while looking at <a href="https://jira.whamcloud.com/browse/LU-11074" title="Invalid argument reading file caps" class="issue-link" data-issue-key="LU-11074"><del>LU-11074</del></a> but this is not the underlying cause of that bug.</p> LU-11109

zero length xattrs handled incorrectly when xattr cache disabled or bypassed

Bug Minor Resolved Fixed John Hammond John Hammond xattr Fri, 29 Jun 2018 17:28:33 +0000 Mon, 7 Jan 2019 19:28:54 +0000 Thu, 9 Aug 2018 19:05:28 +0000 Lustre 2.12.0 0 3 <p>John L. Hammond (jhammond@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/32755" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/32755</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11109" title="zero length xattrs handled incorrectly when xattr cache disabled or bypassed" class="issue-link" data-issue-key="LU-11109"><del>LU-11109</del></a> mdt: handle zero length xattr values correctly<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: c4a00691479e245a2134dc03574448c652e38f13</p> <p>John are the patches a series or independent?</p> <p>The first change is logically independent of the others but they should be used together for <a href="https://jira.whamcloud.com/browse/LU-11074" title="Invalid argument reading file caps" class="issue-link" data-issue-key="LU-11074"><del>LU-11074</del></a>.</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/32755/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/32755/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11109" title="zero length xattrs handled incorrectly when xattr cache disabled or bypassed" class="issue-link" data-issue-key="LU-11109"><del>LU-11109</del></a> mdt: handle zero length xattr values correctly<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 1e4164a1254d7fb75e49af73994d2e53864536ab</p> <p>Landed for 2.12</p> Development Rank 1|hzzylb: Rank (Obsolete) 9223372036854775807 Severity