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-12733 Lustre <p>lctl pool_list does not output pool information.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[root@sl753 ~]# mount | grep lustre -w /dev/mapper/scientific-root on /usr/sbin/mount.*lustre* type xfs (rw,relatime,attr2,inode64,noquota) /dev/sdc1 on /mnt/*lustre*-mgs type *lustre* (ro,svname=MGS,nosvc,mgs,osd=osd-ldiskfs,user_xattr,errors=remount-ro) [root@sl753 ~]# lctl pool_new lustre.p Pool lustre.p created [root@sl753 ~]# lctl pool_add lustre.p OST0003 OST lustre-OST0003_UUID added to pool lustre.p [root@sl753 ~]# lctl pool_list lustre [root@sl753 ~]# lctl pool_list lustre.p [root@sl753 ~]# </pre> </div></div> LU-12733

lctl pool_list on MGS

Bug Minor Resolved Duplicate WC Triage Vladimir Saveliev Mon, 9 Sep 2019 13:04:41 +0000 Fri, 24 Apr 2020 00:30:43 +0000 Fri, 24 Apr 2020 00:30:43 +0000 Lustre 2.13.0 Lustre 2.12.3 0 4 <p>Vladimir Saveliev (c17830@cray.com) uploaded a new patch: <a href="https://review.whamcloud.com/36104" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/36104</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-12733" title="lctl pool_list on MGS" class="issue-link" data-issue-key="LU-12733"><del>LU-12733</del></a> utils: lctl pool_list on standalone MGS<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: fc0fc3c55d21e87320de97a3237ce7be7e7de863</p> <p>I have a patch to fix this issue at <a href="https://review.whamcloud.com/#/c/35895/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/#/c/35895/</a></p> <p><a href="https://review.whamcloud.com/#/c/35895/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/#/c/35895/</a> from <a href="https://jira.whamcloud.com/browse/LU-11743" title="lctl pool operations cannot be run on separate MGS system" class="issue-link" data-issue-key="LU-11743"><del>LU-11743</del></a> is merged.</p> <p>For Lustre 2.12.3 (which has <a href="https://jira.whamcloud.com/browse/LU-11743" title="lctl pool operations cannot be run on separate MGS system" class="issue-link" data-issue-key="LU-11743"><del>LU-11743</del></a>)</p> <p><tt>lctl pool_new|pool_add|pool_remove|pool_destroy</tt> all work but <tt>lctl pool_list</tt> returns nothing on the MGS.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[root@ieel-mds01 ~]# findmnt -t lustre TARGET SOURCE FSTYPE OPTIONS /mnt/MGS /dev/sdb lustre ro,svname=MGS,nosvc,mgs,osd=osd-ldiskfs,user_xattr,errors=remount-ro [root@ieel-mds01 ~]# lfs pool_list fs10 [root@ieel-mds01 ~]# </pre> </div></div> <p><tt>lctl pool_list</tt> works correctly on MDT:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[root@ieel-mds02 ~]# findmnt -t lustre TARGET SOURCE FSTYPE OPTIONS /mnt/fs10-MDT0000 /dev/sdd lustre ro,svname=fs10-MDT0000,mgsnode=192.168.56.10@tcp:192.168.56.11@tcp,osd=osd-l [root@ieel-mds02 ~]# lfs pool_list fs10 Pools from fs10: fs10.pool1 </pre> </div></div> <p>While commands that alter pool look at config logs directly, the pool_list command still tryies to open parse lov, which isn't present on MGS.</p> <p>Nathaniel, it would be useful to get the output from "<tt>lctl --device MGS llog_print $fsname-client | grep pool</tt>" on the MGS. This is where the MGS-local "<tt>lctl pool_list</tt>" and other pool commands get their information. I successfully tested "<tt>lctl pool_list</tt>" on a system (running master) with "<tt>/proc/fs/lustre/lov</tt>" over-mounted by an empty directory, and verified with strace that the <tt>pool</tt> lookup failed and read the pool information via <tt>ioctl()</tt> from the running MGS.</p> <p>I see that while patch <a href="https://review.whamcloud.com/35804" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/35804</a> "<tt><a href="https://jira.whamcloud.com/browse/LU-11743" title="lctl pool operations cannot be run on separate MGS system" class="issue-link" data-issue-key="LU-11743"><del>LU-11743</del></a> utils: allow lctl pool commands on separate MGS</tt>" was landed for 2.12.3, the patch <a href="https://review.whamcloud.com/36314" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/36314</a> "<tt><a href="https://jira.whamcloud.com/browse/LU-11743" title="lctl pool operations cannot be run on separate MGS system" class="issue-link" data-issue-key="LU-11743"><del>LU-11743</del></a> utils: allow lctl pool_list on separate MGS</tt>" was only landed for 2.12.4.</p> Duplicate LU-11743 Related Development Rank 1|i00mev: Rank (Obsolete) 9223372036854775807 Severity