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<div class="section" id="unmounting">
<h1>Unmounting<a class="headerlink" href="#unmounting" title="Permalink to this headline">¶</a></h1>
<p>To unmount an S3QL file system, use the command:</p>
<div class="highlight-commandline"><div class="highlight"><pre><span class="l">umount.s3ql </span><span class="ge">[options]</span><span class="l"> </span><span class="nv"><mountpoint></span><span class="l"></span>
</pre></div>
</div>
<p>This will block until all data has been committed to the storage
backend.</p>
<p>Only the user who mounted the file system with <strong class="command">mount.s3ql</strong>
is able to unmount it again. If you are root and want to unmount an
S3QL file system mounted by an ordinary user, you have to use the
<strong class="command">fusermount -u</strong> or <strong class="command">umount</strong> command instead. Note
that these commands do not block until all data has been uploaded, so
if you use them instead of <tt class="docutils literal"><span class="pre">umount.s3ql</span></tt> then you should manually wait
for the <tt class="docutils literal"><span class="pre">mount.s3ql</span></tt> process to terminate before shutting down the
system.</p>
<p>The <strong class="command">umount.s3ql</strong> command accepts the following options:</p>
<blockquote>
<div><table class="docutils option-list" frame="void" rules="none">
<col class="option" />
<col class="description" />
<tbody valign="top">
<tr><td class="option-group">
<kbd><span class="option">--debug</span></kbd></td>
<td>activate debugging output</td></tr>
<tr><td class="option-group">
<kbd><span class="option">--quiet</span></kbd></td>
<td>be really quiet</td></tr>
<tr><td class="option-group">
<kbd><span class="option">--version</span></kbd></td>
<td>just print program version and exit</td></tr>
<tr><td class="option-group">
<kbd><span class="option">--lazy</span>, <span class="option">-z</span></kbd></td>
<td>Lazy umount. Detaches the file system immediately, even if
there are still open files. The data will be uploaded in the
background once all open files have been closed.</td></tr>
</tbody>
</table>
</div></blockquote>
<p>If, for some reason, the <tt class="docutils literal"><span class="pre">umount.sql</span></tt> command does not work, the file
system can also be unmounted with <tt class="docutils literal"><span class="pre">fusermount</span> <span class="pre">-u</span> <span class="pre">-z</span></tt>. Note that this
command will return immediately and the file system may continue to
upload data in the background for a while longer.</p>
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