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-17471 Lustre <p>Add symlink at /proc/fs/lustre/osd-<b>/</b>/brw_stats to /sys/kernel/debug/lustre/osd-<b>/</b>/brw_stats<br/> to the compatible issue of the previous tools that are still using the old proc entry</p> LU-17471

Add symlink /proc/fs/lustre/osd-*/*/brw_stats to from /proc/fs/lustre/osd-ldiskfs/*/brw_stats to /sys/kernel/debug/lustre/osd-*/*/brw_stats

Bug Minor Open Unresolved Hongchao Zhang Hongchao Zhang Fri, 26 Jan 2024 10:24:41 +0000 Fri, 2 Feb 2024 16:05:57 +0000 0 6 <p>"Hongchao Zhang &lt;hongchao@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53829" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53829</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17471" title="Add symlink /proc/fs/lustre/osd-*/*/brw_stats to from /proc/fs/lustre/osd-ldiskfs/*/brw_stats to /sys/kernel/debug/lustre/osd-*/*/brw_stats" class="issue-link" data-issue-key="LU-17471">LU-17471</a> osd: add symlink for brw_stats<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 828af49c895de3deea4c7e3f8c6d12ab89eb5a3b</p> <p>Adding a symlink into proc is a big no no. Lets complete the <a href="https://jira.whamcloud.com/browse/LU-11850" title="Relocating /proc/fs/lustre/ost to /sys/kernel/debug/lustre/ost prevents non-root access" class="issue-link" data-issue-key="LU-11850">LU-11850</a> work instead. Its made good progress the last few days.</p> <p>Looking at the brw_stats we have:</p> <p>snapshot_time:            1706282708.388344346 secs.nsecs <br/> start_time:               1706235995.333903347 secs.nsecs <br/> elapsed_time:             46713.054440999 secs.nsecs </p> <p>                          read      |     write <br/> pages per bulk r/w     rpcs  % cum % |  rpcs        % cum % </p> <p>                          read      |     write <br/> discontiguous pages    rpcs  % cum % |  rpcs        % cum % </p> <p>                          read      |     write <br/> discontiguous blocks   rpcs  % cum % |  rpcs        % cum % </p> <p>                          read      |     write <br/> disk fragmented I/Os   ios   % cum % |  ios         % cum % </p> <p>                          read      |     write <br/> disk I/Os in flight    ios   % cum % |  ios         % cum % </p> <p>                          read      |     write <br/> I/O time (1/1000s)     ios   % cum % |  ios         % cum % </p> <p>                          read      |     write <br/> disk I/O size          ios   % cum % |  ios         % cum % </p> <p>                          read      |     write <br/> block maps msec        maps  % cum % |  maps        % cum %</p> <p>How should this look for a proper YAML format?</p> Related LU-11850 Development Rank 1|i0496v: Rank (Obsolete) 9223372036854775807 Severity