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-9399 Lustre <p><tt>lctl conf_param</tt> and <tt>lctl set_param -P</tt> are broken for llite parameters (probably due to an ordering issue between the processing of the config logs and creation of the subdirectory of <tt>/proc/fs/llite</tt> corresponding to the mount point. Both work as expected for a client that was mounted when the parameter was set but fail for subsequently mounted clients.</p> <p>Using <tt>lctl conf_param</tt>:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>m:~# llmount.sh ... m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff880036686000.xattr_cache=1 m:~# lctl conf_param lustre.llite.xattr_cache=0 m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff880036686000.xattr_cache=1 m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff880036686000.xattr_cache=0 m:~# umount /mnt/lustre m:~# mount m@tcp:/lustre /mnt/lustre -t lustre -o user_xattr,flock m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff88001017d800.xattr_cache=1 m:~# sleep 60 &amp;&amp; lctl get_param llite.*.xattr_cache llite.lustre-ffff88001017d800.xattr_cache=1 m:~# sleep 60 &amp;&amp; lctl get_param llite.*.xattr_cache llite.lustre-ffff88001017d800.xattr_cache=1 m:~# llmountcleanup.sh ... </pre> </div></div> <p>Using <tt>lctl set_param -P</tt>:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>m:~# mllmount.sh ... m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff88000ee70800.xattr_cache=1 m:~# lctl set_param -P llite.*.xattr_cache=0 m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff88000ee70800.xattr_cache=1 m:~# sleep 10 &amp;&amp; lctl get_param llite.*.xattr_cache llite.lustre-ffff88000ee70800.xattr_cache=0 m:~# umount /mnt/lustre m:~# mount m@tcp:/lustre /mnt/lustre -t lustre -o user_xattr,flock m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff880007858000.xattr_cache=1 m:~# sleep 60 &amp;&amp; lctl get_param llite.*.xattr_cache llite.lustre-ffff880007858000.xattr_cache=1 m:~# sleep 60 &amp;&amp; lctl get_param llite.*.xattr_cache llite.lustre-ffff880007858000.xattr_cache=1 </pre> </div></div> <p>If a second client is mounted (on the same node) then the param will<br/> be set correctly on the first mount point but not on the second.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>m:~# mount m@tcp:/lustre /mnt/lustre2 -t lustre -o user_xattr,flock m:~# lctl get_param llite.*.xattr_cache llite.lustre-ffff880007858000.xattr_cache=0 llite.lustre-ffff88006cddb800.xattr_cache=1 </pre> </div></div> LU-9399

lctl conf_param and lctl set_param -P are broken for llite parameters

Bug Minor Resolved Fixed Emoly Liu John Hammond Wed, 26 Apr 2017 15:32:30 +0000 Sat, 17 Jun 2017 03:03:51 +0000 Sat, 17 Jun 2017 03:03:51 +0000 Lustre 2.10.0 Lustre 2.10.0 1 6 <p>Emoly</p> <p>Could you please assist with this issue?</p> <p>Thanks</p> <p>Peter</p> <p>Can you try my llite sysfs patch <a href="https://review.whamcloud.com/#/c/24031" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/#/c/24031</a>. Test conf-sanity 28 will reveal this problem. Currently it fails because of it.</p> <p>I will look into it.</p> <p>As John said, this is an ordering issue. process_param2_config() calls "/usr/sbin/lctl set_param llite.*.xattr_cache=0" during mounting before the client's /proc/fs/lustre/llite/xxx proc entry is created.<br/> I will see how to fix it.</p> <p>Emoly Liu (emoly.liu@intel.com) uploaded a new patch: <a href="https://review.whamcloud.com/27241" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/27241</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9399" title="lctl conf_param and lctl set_param -P are broken for llite parameters" class="issue-link" data-issue-key="LU-9399"><del>LU-9399</del></a> llite: register mountpoint before process llog<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 35efc9b025c910028317b60398d0d40f446db3f2</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="https://review.whamcloud.com/27241/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/27241/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-9399" title="lctl conf_param and lctl set_param -P are broken for llite parameters" class="issue-link" data-issue-key="LU-9399"><del>LU-9399</del></a> llite: register mountpoint before process llog<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: fa1bff8f6f3afb858618a563b039af3bbf46153b</p> <p>Landed for 2.10</p> Related LU-7183 LU-8066 LU-7004 Development Rank 1|hzzb8v: Rank (Obsolete) 9223372036854775807 Severity