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LINUX: ext4 fs
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<i class="fa fa-calendar"></i><time datetime="2014-11-24T12:09:00+01:00"> Mon 24 November 2014</time>
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<h3>LINUX: ext4 fs</h3>
<p>posted Apr 4, 2012, 4:18 AM by Mila Rahalevich</p>
<p>I was updating many millions rows in MySQL and there was a very big HDD load. I decided to decrease journaling by next options in fstab:</p>
<div class="highlight"><pre><span class="n">UUID</span> <span class="o">/</span> <span class="n">ext4</span> <span class="n">errors</span><span class="o">=</span><span class="n">remount</span><span class="o">-</span><span class="n">ro</span><span class="p">,</span><span class="n">commit</span><span class="o">=</span><span class="mi">60</span> <span class="mi">0</span> <span class="mi">1</span>
</pre></div>
<p>Bute after reboot I noticed than mount shows:</p>
<div class="highlight"><pre><span class="n">errors</span><span class="o">=</span><span class="n">remount</span><span class="o">-</span><span class="n">ro</span><span class="p">,</span><span class="n">commit</span><span class="o">=</span><span class="mi">60</span><span class="p">,</span><span class="n">commit</span><span class="o">=</span><span class="mi">0</span>
</pre></div>
<p>So I need to remount manually by</p>
<div class="highlight"><pre><span class="n">mount</span> <span class="o">-</span><span class="n">o</span> <span class="n">remount</span> <span class="o">/</span>
</pre></div>
<p>Or I have changes in <code>/usr/lib/pm-utils/power.d/journal-commit</code></p>
<div class="highlight"><pre><span class="nv">JOURNAL_COMMIT_TIME_AC</span><span class="s-Atom">=</span><span class="err">$</span><span class="p">{</span><span class="nv">JOURNAL_COMMIT_TIME_AC</span><span class="p">:-</span><span class="m">120</span><span class="p">}</span>
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