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-10367 Lustre <p>While doing some bench marking with FIO is seems libaio is not working with Lustre.</p> <p>FIO can be found here: <a href="https://github.com/axboe/fio/" class="external-link" target="_blank" rel="nofollow noopener">https://github.com/axboe/fio/</a></p> <p>When running with libaio it quickly fails with error messages. A sample FIO configuration file is below:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>fsync=1 directory=/mnt/lustre direct=1 numjobs=32 ioengine=libaio blocksize=64k readwrite=readwrite size=65536m group_reporting </pre> </div></div> <p>Sample error messages:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>..... lustre: Laying out IO file(s) (1 file(s) / 65536MB) fio: io_u error on file /mnt/lustre/lustre.21.0: Unknown error -131072: read offset=0, buflen=65536 fio: io_u error on file /mnt/lustre/lustre.21.0: Unknown error -131072: read offset=65536, buflen=65536 fio: pid=51260, err=-131072/file:io_u.c:1708, func=io_u error, error=Unknown error -131072 ... </pre> </div></div> <p>Removing libaio options allows FIO to run.  </p> <p>Fsync and Direct really slow Lustre down but they run. </p> <p>Other tests  work as expected. </p> Lustre 2.10.1 RHEL 7.4 LU-10367

FIO Fails to run with libaio

Bug Major Resolved Cannot Reproduce Andriy Skulysh Keith Mannthey Mon, 11 Dec 2017 23:12:23 +0000 Thu, 7 May 2020 17:01:07 +0000 Tue, 22 Jan 2019 14:26:54 +0000 Lustre 2.10.1 0 9 <p>Yes, I have the same problem.</p> <p>It 's lustre 2.10.2 +  zfs 0.7.3</p> <p>Hello,</p> <p>I'm having the same problem with 2.10.3.</p> <p>Async IO simply won't work (libaio), directIO are much slower than what we get with 2.7 (same hardware).</p> <p>Any idea where this could come from please?</p> <p>Thank you,</p> <p>Andriy Skulysh (c17819@cray.com) uploaded a new patch: <a href="https://review.whamcloud.com/33716" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33716</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-10367" title="FIO Fails to run with libaio " class="issue-link" data-issue-key="LU-10367"><del>LU-10367</del></a> llite: aio read returns doubled bytes count<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 823b81a1b911ce92612e5953ca4d3135bd01b2a7</p> <p>Now that the PIO code has been removed is this a problem still?</p> <p>The patch isn't needed after <a href="https://jira.whamcloud.com/browse/LU-11825" title="Remove LU-8964/pio feature &amp; supporting framework" class="issue-link" data-issue-key="LU-11825"><del>LU-11825</del></a></p> <p>ok - thanks</p> <p>The problem is still present in 2.10 LTS. The provided patch seems to fix it.</p> <p>Could be interesting for 2.10.7?</p> Related LU-11825 LU-8964 Development Rank 1|hzzp5r: Rank (Obsolete) 9223372036854775807 Severity