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-10873 Lustre <p>We have a monitoring system which can get the informations from<br/> the /proc entries of Lustre. However, the Lustre doesn't export the<br/> used inode/space on MDT/OST, this patch adds used inode/space info<br/> in osd/lod layer:</p> <p>/proc/fs/lustre/osd-*/testfs-OST0000/filesused<br/> /proc/fs/lustre/lod/testfs-MDT0000-mdtlov/filesused</p> <p>/proc/fs/lustre/osd-*/testfs-OST0000/kbytesused<br/> /proc/fs/lustre/lod/testfs-MDT0000-mdtlov/kbytesused</p> LU-10873

Add support for used inode/space on MDT/OST proc

New Feature Minor Closed Won't Do Qian Yingjin Qian Yingjin Tue, 3 Apr 2018 06:40:44 +0000 Mon, 30 Apr 2018 18:00:31 +0000 Mon, 30 Apr 2018 18:00:31 +0000 0 6 <p>Yingjin Qian (qian@ddn.com) uploaded a new patch: <a href="https://review.whamcloud.com/31854" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/31854</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-10873" title="Add support for used inode/space on MDT/OST proc" class="issue-link" data-issue-key="LU-10873"><del>LU-10873</del></a> lustre: Add support for used inode/space on MDT/OST proc<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: afb9c30d283b9c420dd2c20690001d301cbe13bb</p> <p>The <tt>kbytesused</tt> and <tt>inodesused</tt> amounts are just <tt>kbytestotal - kbytesfree</tt> and <tt>inodestotal - inodesfree</tt>, so there is no need to export them separately.</p> <p>The used capacity/inode can be calculated indeed from total - free. However, mathematical operation is not supported in all monitoring solutions, at least not in the framework that we are currently using. We adding the support, but still, I think other users would still find that they can not get the used capacity/inode easily. And calculating it manually from total and free capacity/inode obviously is not a good experience for administrators.</p> <p>This patch is less essential for us (DDN) now, since we've implemented the math support in our monitoring system just a few hours ago. I am going to abandon the patch and close this ticket. Maybe other users of Lustre might found it useful to be able to read used inode/space directly from /proc. If anyone feels necessary, just re-open this ticket.</p> Development Rank 1|hzzv4f: Rank (Obsolete) 9223372036854775807