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<span class="target" id="imap-developer-guidance-var-directory-structure"></span><section id="cyrus-imap-server-var-directory-structure">
<h1>Cyrus IMAP Server: var directory structure<a class="headerlink" href="#cyrus-imap-server-var-directory-structure" title="Permalink to this heading"></a></h1>
<section id="directory-structure-under-var-spool-imap">
<h2>Directory structure under /var/spool/imap<a class="headerlink" href="#directory-structure-under-var-spool-imap" title="Permalink to this heading"></a></h2>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">stage</span><span class="o">./</span>
<span class="n">Normal</span> <span class="n">staging</span> <span class="n">directory</span>
<span class="n">sync</span><span class="o">./</span>
<span class="n">Staging</span> <span class="n">directory</span> <span class="k">for</span> <span class="n">replication</span> <span class="n">system</span>
<span class="n">Includes</span>
<span class="n">sync</span><span class="o">./</span><span class="n">locks</span><span class="o">/*</span>
<span class="n">which</span> <span class="n">are</span> <span class="n">lock</span> <span class="n">files</span> <span class="k">for</span> <span class="n">each</span> <span class="n">user</span> <span class="n">on</span> <span class="n">the</span> <span class="n">system</span> <span class="n">to</span> <span class="n">prevent</span> <span class="n">two</span>
<span class="n">replication</span> <span class="n">runs</span> <span class="kn">from</span> <span class="nn">trying</span> <span class="n">to</span> <span class="n">update</span> <span class="n">the</span> <span class="n">same</span> <span class="n">account</span> <span class="n">at</span> <span class="n">the</span> <span class="n">same</span> <span class="n">time</span>
<span class="p">(</span><span class="n">nothing</span> <span class="n">disastrous</span> <span class="n">should</span> <span class="n">happen</span> <span class="n">even</span> <span class="n">without</span> <span class="n">this</span> <span class="n">lock</span><span class="p">,</span> <span class="n">but</span> <span class="n">the</span> <span class="n">second</span>
<span class="n">job</span> <span class="ow">in</span> <span class="n">will</span> <span class="n">get</span> <span class="n">a</span> <span class="n">bit</span> <span class="n">confused</span> <span class="k">if</span> <span class="n">the</span> <span class="n">target</span> <span class="n">end</span> <span class="n">changes</span> <span class="n">under</span> <span class="n">its</span> <span class="n">feet</span><span class="p">,</span>
<span class="ow">and</span> <span class="n">will</span> <span class="n">probably</span> <span class="n">drop</span> <span class="n">back</span> <span class="n">to</span> <span class="n">a</span> <span class="n">recovery</span> <span class="n">mode</span><span class="o">.</span>
<span class="n">user</span><span class="o">/</span>
<span class="n">Familiar</span> <span class="n">user</span><span class="o">.</span><span class="n">userid</span> <span class="n">space</span><span class="o">.</span>
</pre></div>
</div>
</section>
<section id="directory-structure-under-var-imap">
<h2>Directory structure under /var/imap<a class="headerlink" href="#directory-structure-under-var-imap" title="Permalink to this heading"></a></h2>
<p>Complete list:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">232</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">08</span><span class="p">:</span><span class="mi">21</span> <span class="n">db</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">x</span><span class="o">---</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">112</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">19</span><span class="p">:</span><span class="mi">51</span> <span class="n">db</span><span class="o">.</span><span class="n">backup1</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">x</span><span class="o">---</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">112</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">19</span><span class="p">:</span><span class="mi">21</span> <span class="n">db</span><span class="o">.</span><span class="n">backup2</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">-----</span> <span class="mi">1</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">20799488</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">19</span><span class="p">:</span><span class="mi">51</span> <span class="n">deliver</span><span class="o">.</span><span class="n">db</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">48</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">10</span><span class="p">:</span><span class="mi">16</span> <span class="n">log</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">-----</span> <span class="mi">1</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">1995000</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">19</span><span class="p">:</span><span class="mi">38</span> <span class="n">mailboxes</span><span class="o">.</span><span class="n">db</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span> <span class="mi">1</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">10</span> <span class="n">Jun</span> <span class="mi">2</span> <span class="mi">10</span><span class="p">:</span><span class="mi">08</span> <span class="n">master_machine</span>
<span class="o">-</span><span class="n">rw</span><span class="o">-</span><span class="n">r</span><span class="o">--</span><span class="n">r</span><span class="o">--</span> <span class="mi">1</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">71</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">08</span><span class="p">:</span><span class="mi">21</span> <span class="n">master_uuid</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">48</span> <span class="n">Jun</span> <span class="mi">2</span> <span class="mi">10</span><span class="p">:</span><span class="mi">08</span> <span class="n">msg</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">1872</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">19</span><span class="p">:</span><span class="mi">55</span> <span class="n">proc</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">28</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">672</span> <span class="n">Jun</span> <span class="mi">2</span> <span class="mi">10</span><span class="p">:</span><span class="mi">08</span> <span class="n">quota</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">224</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">08</span><span class="p">:</span><span class="mi">21</span> <span class="n">socket</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">2</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">72</span> <span class="n">Sep</span> <span class="mi">7</span> <span class="mi">10</span><span class="p">:</span><span class="mi">19</span> <span class="n">sync</span>
<span class="n">drwxr</span><span class="o">-</span><span class="n">xr</span><span class="o">-</span><span class="n">x</span> <span class="mi">28</span> <span class="n">cyrus</span> <span class="n">cyrus</span> <span class="mi">672</span> <span class="n">Jun</span> <span class="mi">2</span> <span class="mi">10</span><span class="p">:</span><span class="mi">08</span> <span class="n">user</span>
</pre></div>
</div>
<p>Most of that will be familiar. New entries are:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">master_machine</span>
<span class="n">Defines</span> <span class="n">machine</span> <span class="n">number</span> <span class="ow">in</span> <span class="n">replication</span> <span class="n">cluster</span><span class="o">.</span> <span class="n">Used</span> <span class="k">as</span> <span class="n">sanity</span> <span class="n">check</span>
<span class="n">against</span> <span class="n">master_uuid</span> <span class="n">file</span><span class="o">.</span> <span class="n">Sample</span> <span class="n">content</span><span class="p">:</span>
<span class="n">machine</span><span class="o">=</span><span class="mi">1</span>
<span class="n">master_uuid</span>
<span class="n">Full</span> <span class="n">information</span> <span class="n">about</span> <span class="n">UUID</span> <span class="n">schema</span> <span class="ow">in</span> <span class="n">use</span><span class="o">.</span> <span class="n">See</span> <span class="o">./</span><span class="n">uuid</span> <span class="k">for</span> <span class="n">details</span><span class="o">.</span>
<span class="n">Sample</span> <span class="n">content</span><span class="p">:</span>
<span class="n">schema</span><span class="o">=</span><span class="mi">1</span>
<span class="n">machine</span><span class="o">=</span><span class="mi">1</span>
<span class="n">timestamp_generation</span><span class="o">=</span><span class="mi">0</span>
<span class="n">master_start_time</span><span class="o">=</span><span class="mi">1062919294</span>
<span class="n">sync</span><span class="o">/</span><span class="n">current</span>
<span class="n">Transaction</span> <span class="n">log</span> <span class="kn">from</span> <span class="nn">IMAP</span><span class="p">,</span> <span class="n">POP</span> <span class="ow">and</span> <span class="n">LMTP</span> <span class="n">daemons</span><span class="p">,</span> <span class="n">typically</span> <span class="n">feed</span> <span class="n">into</span>
<span class="n">sync_client</span> <span class="n">running</span> <span class="k">as</span> <span class="n">asynchronous</span> <span class="n">replication</span> <span class="n">engine</span><span class="o">.</span>
<span class="n">Rotated</span> <span class="n">to</span> <span class="n">be</span> <span class="n">sync</span><span class="o">/</span><span class="n">current</span><span class="o">-<</span><span class="n">pid</span><span class="o">></span> <span class="n">by</span> <span class="n">asynchronous</span> <span class="n">runner</span><span class="o">.</span>
</pre></div>
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