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<nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#install" class="md-nav__link"> <span class="md-ellipsis"> Install </span> </a> </li> <li class="md-nav__item"> <a href="#configuration" class="md-nav__link"> <span class="md-ellipsis"> Configuration </span> </a> <nav class="md-nav" aria-label="Configuration"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#you-use-linux-v66-or-above" class="md-nav__link"> <span class="md-ellipsis"> You use Linux v6.6 or above </span> </a> </li> <li class="md-nav__item"> <a href="#you-use-linux-v65-or-below" class="md-nav__link"> <span class="md-ellipsis"> You use Linux v6.5 or below </span> </a> <nav class="md-nav" aria-label="You use Linux v6.5 or below"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#you-need-mmap-used-by-rtorrent-and-many-sqlite3-base-software" class="md-nav__link"> <span class="md-ellipsis"> You need mmap (used by rtorrent and many sqlite3 base software) </span> </a> </li> <li class="md-nav__item"> <a href="#you-dont-need-mmap" class="md-nav__link"> <span class="md-ellipsis"> You don't need mmap </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#usage" class="md-nav__link"> <span class="md-ellipsis"> Usage </span> </a> <nav class="md-nav" aria-label="Usage"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#command-line" class="md-nav__link"> <span class="md-ellipsis"> Command Line </span> </a> </li> <li class="md-nav__item"> <a href="#etcfstab" class="md-nav__link"> <span class="md-ellipsis"> /etc/fstab </span> </a> </li> <li class="md-nav__item"> <a href="#etcfstab-w-config-file" class="md-nav__link"> <span class="md-ellipsis"> /etc/fstab w/ config file </span> </a> <nav class="md-nav" aria-label="/etc/fstab w/ config file"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#etcfstab_1" class="md-nav__link"> <span class="md-ellipsis"> /etc/fstab </span> </a> </li> <li class="md-nav__item"> <a href="#etcmergerfsconfigmediaini" class="md-nav__link"> <span class="md-ellipsis"> /etc/mergerfs/config/media.ini </span> </a> </li> <li class="md-nav__item"> <a href="#etcmergerfsbranchesmedia" class="md-nav__link"> <span class="md-ellipsis"> /etc/mergerfs/branches/media/ </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#systemd-simple" class="md-nav__link"> <span class="md-ellipsis"> systemd (simple) </span> </a> </li> <li class="md-nav__item"> <a href="#systemd-w-setup-script" class="md-nav__link"> <span class="md-ellipsis"> systemd (w/ setup script) </span> </a> <nav class="md-nav" aria-label="systemd (w/ setup script)"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#setup-for-mergerfs" class="md-nav__link"> <span class="md-ellipsis"> setup-for-mergerfs </span> </a> </li> <li class="md-nav__item"> <a href="#setup-for-mergerfsservice" class="md-nav__link"> <span class="md-ellipsis"> setup-for-mergerfs.service </span> </a> </li> <li class="md-nav__item"> <a href="#mergerfs-mediaservice" class="md-nav__link"> <span class="md-ellipsis"> mergerfs-media.service </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> </ul> </nav> </li>
<li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_3" > <label class="md-nav__link" for="__nav_3" id="__nav_3_label" tabindex="0"> <span class="md-ellipsis"> Installation </span>
<span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_3_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_3"> <span class="md-nav__icon md-icon"></span> Installation </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../setup/installation/" class="md-nav__link"> <span class="md-ellipsis"> Installation </span>
</a> </li>
<li class="md-nav__item"> <a href="../setup/upgrade/" class="md-nav__link"> <span class="md-ellipsis"> Upgrade </span>
</a> </li>
<li class="md-nav__item"> <a href="../setup/build/" class="md-nav__link"> <span class="md-ellipsis"> Build </span>
</a> </li>
</ul> </nav> </li>
<li class="md-nav__item md-nav__item--nested"> <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4" > <label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0"> <span class="md-ellipsis"> Config </span>
<span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false"> <label class="md-nav__title" for="__nav_4"> <span class="md-nav__icon md-icon"></span> Config </label> <ul class="md-nav__list" data-md-scrollfix> <li class="md-nav__item"> <a href="../config/terminology/" class="md-nav__link"> <span class="md-ellipsis"> Terminology </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/options/" class="md-nav__link"> <span class="md-ellipsis"> Options </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/deprecated_options/" class="md-nav__link"> <span class="md-ellipsis"> Deprecated Options </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/branches/" class="md-nav__link"> <span class="md-ellipsis"> branches </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/functions_categories_and_policies/" class="md-nav__link"> <span class="md-ellipsis"> functions, categories and policies </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/func_readdir/" class="md-nav__link"> <span class="md-ellipsis"> func.readdir </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/rename_and_link/" class="md-nav__link"> <span class="md-ellipsis"> rename and link </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/cache/" class="md-nav__link"> <span class="md-ellipsis"> caching </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/readahead/" class="md-nav__link"> <span class="md-ellipsis"> readahead </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/inodecalc/" class="md-nav__link"> <span class="md-ellipsis"> inodecalc </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/threads/" class="md-nav__link"> <span class="md-ellipsis"> threads </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/pin-threads/" class="md-nav__link"> <span class="md-ellipsis"> pin-threads </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/link_cow/" class="md-nav__link"> <span class="md-ellipsis"> link_cow </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/fuse_msg_size/" class="md-nav__link"> <span class="md-ellipsis"> fuse_msg_size </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/follow-symlinks/" class="md-nav__link"> <span class="md-ellipsis"> follow-symlinks </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/link-exdev/" class="md-nav__link"> <span class="md-ellipsis"> link-exdev </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/rename-exdev/" class="md-nav__link"> <span class="md-ellipsis"> rename-exdev </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/symlinkify/" class="md-nav__link"> <span class="md-ellipsis"> symlinkify </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/nullrw/" class="md-nav__link"> <span class="md-ellipsis"> nullrw </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/xattr/" class="md-nav__link"> <span class="md-ellipsis"> xattr </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/nfsopenhack/" class="md-nav__link"> <span class="md-ellipsis"> nfsopenhack </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/statfs/" class="md-nav__link"> <span class="md-ellipsis"> statfs / statvfs </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/flush-on-close/" class="md-nav__link"> <span class="md-ellipsis"> flush-on-close </span>
</a> </li>
<li class="md-nav__item"> <a href="../config/export-support/" class="md-nav__link"> <span class="md-ellipsis"> export-support </span>
</a> </li>
</ul> </nav> </li>
<li class="md-nav__item"> <a href="../error_handling/" class="md-nav__link"> <span class="md-ellipsis"> Error Handling </span>
</a> </li>
<li class="md-nav__item"> <a href="../runtime_interfaces/" class="md-nav__link"> <span class="md-ellipsis"> Runtime Interfaces </span>
</a> </li>
<li class="md-nav__item"> <a href="../remote_filesystems/" class="md-nav__link"> <span class="md-ellipsis"> Remote Filesystems </span>
</a> </li>
<li class="md-nav__item"> <a href="../tips_notes/" class="md-nav__link"> <span class="md-ellipsis"> Tips and Notes </span>
</a> </li>
<li class="md-nav__item"> <a href="../known_issues_bugs/" class="md-nav__link"> <span class="md-ellipsis"> Known Issues and Bugs </span>
</a> </li>
<li class="md-nav__item"> <a href="../project_comparisons/" class="md-nav__link"> <span class="md-ellipsis"> Project Comparisons </span>
</a> </li>
<li class="md-nav__item"> <a href="../performance/" class="md-nav__link"> <span class="md-ellipsis"> Tweaking Performance </span>
</a> </li>
<li class="md-nav__item"> <a href="../benchmarking/" class="md-nav__link"> <span class="md-ellipsis"> Benchmarking </span>
</a> </li>
<li class="md-nav__item"> <a href="../tooling/" class="md-nav__link"> <span class="md-ellipsis"> Tooling </span>
</a> </li>
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<nav class="md-nav md-nav--secondary" aria-label="Table of contents"> <label class="md-nav__title" for="__toc"> <span class="md-nav__icon md-icon"></span> Table of contents </label> <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix> <li class="md-nav__item"> <a href="#install" class="md-nav__link"> <span class="md-ellipsis"> Install </span> </a> </li> <li class="md-nav__item"> <a href="#configuration" class="md-nav__link"> <span class="md-ellipsis"> Configuration </span> </a> <nav class="md-nav" aria-label="Configuration"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#you-use-linux-v66-or-above" class="md-nav__link"> <span class="md-ellipsis"> You use Linux v6.6 or above </span> </a> </li> <li class="md-nav__item"> <a href="#you-use-linux-v65-or-below" class="md-nav__link"> <span class="md-ellipsis"> You use Linux v6.5 or below </span> </a> <nav class="md-nav" aria-label="You use Linux v6.5 or below"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#you-need-mmap-used-by-rtorrent-and-many-sqlite3-base-software" class="md-nav__link"> <span class="md-ellipsis"> You need mmap (used by rtorrent and many sqlite3 base software) </span> </a> </li> <li class="md-nav__item"> <a href="#you-dont-need-mmap" class="md-nav__link"> <span class="md-ellipsis"> You don't need mmap </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#usage" class="md-nav__link"> <span class="md-ellipsis"> Usage </span> </a> <nav class="md-nav" aria-label="Usage"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#command-line" class="md-nav__link"> <span class="md-ellipsis"> Command Line </span> </a> </li> <li class="md-nav__item"> <a href="#etcfstab" class="md-nav__link"> <span class="md-ellipsis"> /etc/fstab </span> </a> </li> <li class="md-nav__item"> <a href="#etcfstab-w-config-file" class="md-nav__link"> <span class="md-ellipsis"> /etc/fstab w/ config file </span> </a> <nav class="md-nav" aria-label="/etc/fstab w/ config file"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#etcfstab_1" class="md-nav__link"> <span class="md-ellipsis"> /etc/fstab </span> </a> </li> <li class="md-nav__item"> <a href="#etcmergerfsconfigmediaini" class="md-nav__link"> <span class="md-ellipsis"> /etc/mergerfs/config/media.ini </span> </a> </li> <li class="md-nav__item"> <a href="#etcmergerfsbranchesmedia" class="md-nav__link"> <span class="md-ellipsis"> /etc/mergerfs/branches/media/ </span> </a> </li> </ul> </nav> </li> <li class="md-nav__item"> <a href="#systemd-simple" class="md-nav__link"> <span class="md-ellipsis"> systemd (simple) </span> </a> </li> <li class="md-nav__item"> <a href="#systemd-w-setup-script" class="md-nav__link"> <span class="md-ellipsis"> systemd (w/ setup script) </span> </a> <nav class="md-nav" aria-label="systemd (w/ setup script)"> <ul class="md-nav__list"> <li class="md-nav__item"> <a href="#setup-for-mergerfs" class="md-nav__link"> <span class="md-ellipsis"> setup-for-mergerfs </span> </a> </li> <li class="md-nav__item"> <a href="#setup-for-mergerfsservice" class="md-nav__link"> <span class="md-ellipsis"> setup-for-mergerfs.service </span> </a> </li> <li class="md-nav__item"> <a href="#mergerfs-mediaservice" class="md-nav__link"> <span class="md-ellipsis"> mergerfs-media.service </span> </a> </li> </ul> </nav> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class="md-content" data-md-component="content"> <article class="md-content__inner md-typeset">
<a href="https://github.com/trapexit/mergerfs/tree/master/mkdocs/docs/quickstart.md" title="Edit this page" class="md-content__button md-icon"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M10 20H6V4h7v5h5v3.1l2-2V8l-6-6H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h4zm10.2-7c.1 0 .3.1.4.2l1.3 1.3c.2.2.2.6 0 .8l-1 1-2.1-2.1 1-1c.1-.1.2-.2.4-.2m0 3.9L14.1 23H12v-2.1l6.1-6.1z"/></svg> </a> <a href="https://github.com/trapexit/mergerfs/tree/master/mkdocs/docs/quickstart.md" title="View source of this page" class="md-content__button md-icon"> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M17 18c.56 0 1 .44 1 1s-.44 1-1 1-1-.44-1-1 .44-1 1-1m0-3c-2.73 0-5.06 1.66-6 4 .94 2.34 3.27 4 6 4s5.06-1.66 6-4c-.94-2.34-3.27-4-6-4m0 6.5a2.5 2.5 0 0 1-2.5-2.5 2.5 2.5 0 0 1 2.5-2.5 2.5 2.5 0 0 1 2.5 2.5 2.5 2.5 0 0 1-2.5 2.5M9.27 20H6V4h7v5h5v4.07c.7.08 1.36.25 2 .49V8l-6-6H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h4.5a8.2 8.2 0 0 1-1.23-2"/></svg> </a>
<h1 id="quickstart">QuickStart</h1><h2 id="install">Install</h2><p>First ensure you have the <a href="../setup/installation/">latest version installed</a>.</p><h2 id="configuration">Configuration</h2><p>mergerfs has many options and effectively all of them are functionalin nature. What that means is that there is no "best" or "fastest"configuration. No "make faster" options. Everything changesbehavior. Sometimes those changes in behavior affect performance.</p><p>That said: If you don't already know that you have a special use casethen use one of the following option sets as it will cover most casualusecases.</p><h3 id="you-use-linux-v66-or-above">You use Linux v6.6 or above</h3><ul><li>cache.files=off</li><li>category.create=mfs</li><li>dropecacheonclose=false</li></ul><p>In previous versions of Linux it was unable to support <code>mmap</code> if pagecaching was disabled (ie: <code>cache.files=off</code>). However, it now willenable page caching if needed for a particular file if mmap isrequested.</p><p><code>mmap</code> is needed by certain software to read and write to afile. However, many software could work without it and fail to haveproper error handling. Many programs that use sqlite3 will require<code>mmap</code> despite sqlite3 working perfectly fine without it (and in somecases can be more performant with regular file IO.)</p><h3 id="you-use-linux-v65-or-below">You use Linux v6.5 or below</h3><h4 id="you-need-mmap-used-by-rtorrent-and-many-sqlite3-base-software">You need <code>mmap</code> (used by rtorrent and many sqlite3 base software)</h4><ul><li>cache.files=auto-full</li><li>category.create=mfs</li><li>dropcacheonclose=true</li></ul><h4 id="you-dont-need-mmap">You don't need <code>mmap</code></h4><ul><li>cache.files=off</li><li>category.create=mfs</li><li>dropcacheonclose=false</li></ul><h2 id="usage">Usage</h2><h3 id="command-line">Command Line</h3><div class="language-text highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a>mergerfs -o cache.files=off,dropcacheonclose=false,category.create=mfs /mnt/hdd0:/mnt/hdd1 /media</span></code></pre></div><h3 id="etcfstab">/etc/fstab</h3><div class="language-text highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>/mnt/hdd0:/mnt/hdd1 /media mergerfs cache.files=off,dropcacheonclose=false,category.create=mfs 0 0</span></code></pre></div><h3 id="etcfstab-w-config-file">/etc/fstab w/ config file</h3><p>For more complex setups it can be useful to separate out the config.</p><h4 id="etcfstab_1">/etc/fstab</h4><div class="language-text highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a>/etc/mergerfs/branches/media/* /media mergerfs config=/etc/mergerfs/config/media.ini</span></code></pre></div><h4 id="etcmergerfsconfigmediaini">/etc/mergerfs/config/media.ini</h4><div class="language-ini highlight"><span class="filename">media.ini</span><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1"></a><a href="#__codelineno-3-1"><span class="linenos" data-linenos="1 "></span></a><span class="na">cache.files</span><span class="o">=</span><span class="s">off</span></span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2"></a><a href="#__codelineno-3-2"><span class="linenos" data-linenos="2 "></span></a><span class="na">category.create</span><span class="o">=</span><span class="s">mfs</span></span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3"></a><a href="#__codelineno-3-3"><span class="linenos" data-linenos="3 "></span></a><span class="na">dropcacheonclose</span><span class="o">=</span><span class="s">false</span></span></code></pre></div><h4 id="etcmergerfsbranchesmedia">/etc/mergerfs/branches/media/</h4><p>Create a bunch of symlinks to point to the branch. mergerfs willresolve the symlinks and use the real path.</p><p><code>ls -lh /etc/mergerfs/branches/media/*</code></p><div class="language-text highlight"><pre><span></span><code><span id="__span-4-1"><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a>lrwxrwxrwx 1 root root 21 Aug 4 2023 hdd00 -> /mnt/hdd/hdd00</span><span id="__span-4-2"><a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a>lrwxrwxrwx 1 root root 21 Aug 4 2023 hdd01 -> /mnt/hdd/hdd01</span><span id="__span-4-3"><a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a>lrwxrwxrwx 1 root root 21 Aug 4 2023 hdd02 -> /mnt/hdd/hdd02</span><span id="__span-4-4"><a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a>lrwxrwxrwx 1 root root 21 Aug 4 2023 hdd03 -> /mnt/hdd/hdd03</span></code></pre></div><h3 id="systemd-simple">systemd (simple)</h3><p><code>/etc/systemd/system/mergerfs-media.service</code></p><div class="language-systemd highlight"><span class="filename">mergerfs-media.service</span><pre><span></span><code><span id="__span-5-1"><a id="__codelineno-5-1" name="__codelineno-5-1"></a><a href="#__codelineno-5-1"><span class="linenos" data-linenos=" 1 "></span></a><span class="k">[Unit]</span></span><span id="__span-5-2"><a id="__codelineno-5-2" name="__codelineno-5-2"></a><a href="#__codelineno-5-2"><span class="linenos" data-linenos=" 2 "></span></a><span class="na">Description</span><span class="o">=</span><span class="s">mergerfs /media service</span></span><span id="__span-5-3"><a id="__codelineno-5-3" name="__codelineno-5-3"></a><a href="#__codelineno-5-3"><span class="linenos" data-linenos=" 3 "></span></a><span class="na">After</span><span class="o">=</span><span class="s">local-fs.target network.target</span></span><span id="__span-5-4"><a id="__codelineno-5-4" name="__codelineno-5-4"></a><a href="#__codelineno-5-4"><span class="linenos" data-linenos=" 4 "></span></a></span><span id="__span-5-5"><a id="__codelineno-5-5" name="__codelineno-5-5"></a><a href="#__codelineno-5-5"><span class="linenos" data-linenos=" 5 "></span></a><span class="k">[Service]</span></span><span id="__span-5-6"><a id="__codelineno-5-6" name="__codelineno-5-6"></a><a href="#__codelineno-5-6"><span class="linenos" data-linenos=" 6 "></span></a><span class="na">Type</span><span class="o">=</span><span class="s">simple</span></span><span id="__span-5-7"><a id="__codelineno-5-7" name="__codelineno-5-7"></a><a href="#__codelineno-5-7"><span class="linenos" data-linenos=" 7 "></span></a><span class="na">KillMode</span><span class="o">=</span><span class="s">none</span></span><span id="__span-5-8"><a id="__codelineno-5-8" name="__codelineno-5-8"></a><a href="#__codelineno-5-8"><span class="linenos" data-linenos=" 8 "></span></a><span class="na">ExecStart</span><span class="o">=</span><span class="s">/usr/bin/mergerfs </span>\</span><span id="__span-5-9"><a id="__codelineno-5-9" name="__codelineno-5-9"></a><a href="#__codelineno-5-9"><span class="linenos" data-linenos=" 9 "></span></a><span class="w"> </span><span class="s">-f </span>\</span><span id="__span-5-10"><a id="__codelineno-5-10" name="__codelineno-5-10"></a><a href="#__codelineno-5-10"><span class="linenos" data-linenos="10 "></span></a><span class="w"> </span><span class="s">-o cache.files=off </span>\</span><span id="__span-5-11"><a id="__codelineno-5-11" name="__codelineno-5-11"></a><a href="#__codelineno-5-11"><span class="linenos" data-linenos="11 "></span></a><span class="w"> </span><span class="s">-o category.create=mfs </span>\</span><span id="__span-5-12"><a id="__codelineno-5-12" name="__codelineno-5-12"></a><a href="#__codelineno-5-12"><span class="linenos" data-linenos="12 "></span></a><span class="w"> </span><span class="s">-o dropcacheonclose=false </span>\</span><span id="__span-5-13"><a id="__codelineno-5-13" name="__codelineno-5-13"></a><a href="#__codelineno-5-13"><span class="linenos" data-linenos="13 "></span></a><span class="w"> </span><span class="s">/mnt/hdd0:/mnt/hdd1 </span>\</span><span id="__span-5-14"><a id="__codelineno-5-14" name="__codelineno-5-14"></a><a href="#__codelineno-5-14"><span class="linenos" data-linenos="14 "></span></a><span class="w"> </span><span class="s">/media</span></span><span id="__span-5-15"><a id="__codelineno-5-15" name="__codelineno-5-15"></a><a href="#__codelineno-5-15"><span class="linenos" data-linenos="15 "></span></a><span class="na">ExecStop</span><span class="o">=</span><span class="s">/bin/fusermount -uz /media</span></span><span id="__span-5-16"><a id="__codelineno-5-16" name="__codelineno-5-16"></a><a href="#__codelineno-5-16"><span class="linenos" data-linenos="16 "></span></a><span class="na">Restart</span><span class="o">=</span><span class="s">on-failure</span></span><span id="__span-5-17"><a id="__codelineno-5-17" name="__codelineno-5-17"></a><a href="#__codelineno-5-17"><span class="linenos" data-linenos="17 "></span></a></span><span id="__span-5-18"><a id="__codelineno-5-18" name="__codelineno-5-18"></a><a href="#__codelineno-5-18"><span class="linenos" data-linenos="18 "></span></a><span class="k">[Install]</span></span><span id="__span-5-19"><a id="__codelineno-5-19" name="__codelineno-5-19"></a><a href="#__codelineno-5-19"><span class="linenos" data-linenos="19 "></span></a><span class="na">WantedBy</span><span class="o">=</span><span class="s">default.target</span></span></code></pre></div><h3 id="systemd-w-setup-script">systemd (w/ setup script)</h3><p>Since it isn't well documented otherwise: if you wish to do some setup beforeyou mount mergerfs follow this example.</p><h4 id="setup-for-mergerfs">setup-for-mergerfs</h4><p><code>/usr/local/bin/setup-for-mergerfs</code></p><div class="language-shell highlight"><span class="filename">setup-for-mergerfs</span><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1"></a><a href="#__codelineno-6-1"><span class="linenos" data-linenos="1 "></span></a><span class="ch">#!/usr/bin/env sh</span></span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2"></a><a href="#__codelineno-6-2"><span class="linenos" data-linenos="2 "></span></a></span><span id="__span-6-3"><a id="__codelineno-6-3" name="__codelineno-6-3"></a><a href="#__codelineno-6-3"><span class="linenos" data-linenos="3 "></span></a><span class="c1"># Perform setup</span></span><span id="__span-6-4"><a id="__codelineno-6-4" name="__codelineno-6-4"></a><a href="#__codelineno-6-4"><span class="linenos" data-linenos="4 "></span></a>/bin/sleep<span class="w"> </span><span class="m">10</span></span><span id="__span-6-5"><a id="__codelineno-6-5" name="__codelineno-6-5"></a><a href="#__codelineno-6-5"><span class="linenos" data-linenos="5 "></span></a></span><span id="__span-6-6"><a id="__codelineno-6-6" name="__codelineno-6-6"></a><a href="#__codelineno-6-6"><span class="linenos" data-linenos="6 "></span></a><span class="c1"># Report back to systemd that things are ready</span></span><span id="__span-6-7"><a id="__codelineno-6-7" name="__codelineno-6-7"></a><a href="#__codelineno-6-7"><span class="linenos" data-linenos="7 "></span></a>/bin/systemd-notify<span class="w"> </span>--ready</span></code></pre></div><h4 id="setup-for-mergerfsservice">setup-for-mergerfs.service</h4><p><code>/etc/systemd/system/setup-for-mergerfs.service</code></p><div class="language-systemd highlight"><span class="filename">setup-for-mergerfs.service</span><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1"></a><a href="#__codelineno-7-1"><span class="linenos" data-linenos=" 1 "></span></a><span class="k">[Unit]</span></span><span id="__span-7-2"><a id="__codelineno-7-2" name="__codelineno-7-2"></a><a href="#__codelineno-7-2"><span class="linenos" data-linenos=" 2 "></span></a><span class="na">Description</span><span class="o">=</span><span class="s">mergerfs setup service</span></span><span id="__span-7-3"><a id="__codelineno-7-3" name="__codelineno-7-3"></a><a href="#__codelineno-7-3"><span class="linenos" data-linenos=" 3 "></span></a></span><span id="__span-7-4"><a id="__codelineno-7-4" name="__codelineno-7-4"></a><a href="#__codelineno-7-4"><span class="linenos" data-linenos=" 4 "></span></a><span class="k">[Service]</span></span><span id="__span-7-5"><a id="__codelineno-7-5" name="__codelineno-7-5"></a><a href="#__codelineno-7-5"><span class="linenos" data-linenos=" 5 "></span></a><span class="na">Type</span><span class="o">=</span><span class="s">notify</span></span><span id="__span-7-6"><a id="__codelineno-7-6" name="__codelineno-7-6"></a><a href="#__codelineno-7-6"><span class="linenos" data-linenos=" 6 "></span></a><span class="na">RemainAfterExit</span><span class="o">=</span><span class="s">yes</span></span><span id="__span-7-7"><a id="__codelineno-7-7" name="__codelineno-7-7"></a><a href="#__codelineno-7-7"><span class="linenos" data-linenos=" 7 "></span></a><span class="na">ExecStart</span><span class="o">=</span><span class="s">/usr/local/bin/setup-for-mergerfs</span></span><span id="__span-7-8"><a id="__codelineno-7-8" name="__codelineno-7-8"></a><a href="#__codelineno-7-8"><span class="linenos" data-linenos=" 8 "></span></a></span><span id="__span-7-9"><a id="__codelineno-7-9" name="__codelineno-7-9"></a><a href="#__codelineno-7-9"><span class="linenos" data-linenos=" 9 "></span></a><span class="k">[Install]</span></span><span id="__span-7-10"><a id="__codelineno-7-10" name="__codelineno-7-10"></a><a href="#__codelineno-7-10"><span class="linenos" data-linenos="10 "></span></a><span class="na">WantedBy</span><span class="o">=</span><span class="s">default.target</span></span></code></pre></div><h4 id="mergerfs-mediaservice">mergerfs-media.service</h4><p><code>/etc/systemd/system/mergerfs-media.service</code></p><div class="language-systemd highlight"><span class="filename">mergerfs-media.service</span><pre><span></span><code><span id="__span-8-1"><a id="__codelineno-8-1" name="__codelineno-8-1"></a><a href="#__codelineno-8-1"><span class="linenos" data-linenos=" 1 "></span></a><span class="k">[Unit]</span></span><span id="__span-8-2"><a id="__codelineno-8-2" name="__codelineno-8-2"></a><a href="#__codelineno-8-2"><span class="linenos" data-linenos=" 2 "></span></a><span class="na">Description</span><span class="o">=</span><span class="s">mergerfs /media service</span></span><span id="__span-8-3"><a id="__codelineno-8-3" name="__codelineno-8-3"></a><a href="#__codelineno-8-3"><span class="linenos" data-linenos=" 3 "></span></a><span class="na">Requires</span><span class="o">=</span><span class="s">setup-for-mergerfs.service</span></span><span id="__span-8-4"><a id="__codelineno-8-4" name="__codelineno-8-4"></a><a href="#__codelineno-8-4"><span class="linenos" data-linenos=" 4 "></span></a><span class="na">After</span><span class="o">=</span><span class="s">local-fs.target network.target prepare-for-mergerfs.service</span></span><span id="__span-8-5"><a id="__codelineno-8-5" name="__codelineno-8-5"></a><a href="#__codelineno-8-5"><span class="linenos" data-linenos=" 5 "></span></a></span><span id="__span-8-6"><a id="__codelineno-8-6" name="__codelineno-8-6"></a><a href="#__codelineno-8-6"><span class="linenos" data-linenos=" 6 "></span></a><span class="k">[Service]</span></span><span id="__span-8-7"><a id="__codelineno-8-7" name="__codelineno-8-7"></a><a href="#__codelineno-8-7"><span class="linenos" data-linenos=" 7 "></span></a><span class="na">Type</span><span class="o">=</span><span class="s">simple</span></span><span id="__span-8-8"><a id="__codelineno-8-8" name="__codelineno-8-8"></a><a href="#__codelineno-8-8"><span class="linenos" data-linenos=" 8 "></span></a><span class="na">KillMode</span><span class="o">=</span><span class="s">none</span></span><span id="__span-8-9"><a id="__codelineno-8-9" name="__codelineno-8-9"></a><a href="#__codelineno-8-9"><span class="linenos" data-linenos=" 9 "></span></a><span class="na">ExecStart</span><span class="o">=</span><span class="s">/usr/bin/mergerfs </span>\</span><span id="__span-8-10"><a id="__codelineno-8-10" name="__codelineno-8-10"></a><a href="#__codelineno-8-10"><span class="linenos" data-linenos="10 "></span></a><span class="w"> </span><span class="s">-f </span>\</span><span id="__span-8-11"><a id="__codelineno-8-11" name="__codelineno-8-11"></a><a href="#__codelineno-8-11"><span class="linenos" data-linenos="11 "></span></a><span class="w"> </span><span class="s">-o cache.files=off </span>\</span><span id="__span-8-12"><a id="__codelineno-8-12" name="__codelineno-8-12"></a><a href="#__codelineno-8-12"><span class="linenos" data-linenos="12 "></span></a><span class="w"> </span><span class="s">-o category.create=mfs </span>\</span><span id="__span-8-13"><a id="__codelineno-8-13" name="__codelineno-8-13"></a><a href="#__codelineno-8-13"><span class="linenos" data-linenos="13 "></span></a><span class="w"> </span><span class="s">-o dropcacheonclose=false </span>\</span><span id="__span-8-14"><a id="__codelineno-8-14" name="__codelineno-8-14"></a><a href="#__codelineno-8-14"><span class="linenos" data-linenos="14 "></span></a><span class="w"> </span><span class="s">/mnt/hdd0:/mnt/hdd1 </span>\</span><span id="__span-8-15"><a id="__codelineno-8-15" name="__codelineno-8-15"></a><a href="#__codelineno-8-15"><span class="linenos" data-linenos="15 "></span></a><span class="w"> </span><span class="s">/media</span></span><span id="__span-8-16"><a id="__codelineno-8-16" name="__codelineno-8-16"></a><a href="#__codelineno-8-16"><span class="linenos" data-linenos="16 "></span></a><span class="na">ExecStop</span><span class="o">=</span><span class="s">/bin/fusermount -uz /media</span></span><span id="__span-8-17"><a id="__codelineno-8-17" name="__codelineno-8-17"></a><a href="#__codelineno-8-17"><span class="linenos" data-linenos="17 "></span></a><span class="na">Restart</span><span class="o">=</span><span class="s">on-failure</span></span><span id="__span-8-18"><a id="__codelineno-8-18" name="__codelineno-8-18"></a><a href="#__codelineno-8-18"><span class="linenos" data-linenos="18 "></span></a></span><span id="__span-8-19"><a id="__codelineno-8-19" name="__codelineno-8-19"></a><a href="#__codelineno-8-19"><span class="linenos" data-linenos="19 "></span></a><span class="k">[Install]</span></span><span id="__span-8-20"><a id="__codelineno-8-20" name="__codelineno-8-20"></a><a href="#__codelineno-8-20"><span class="linenos" data-linenos="20 "></span></a><span class="na">WantedBy</span><span class="o">=</span><span class="s">default.target</span></span></code></pre></div>
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