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<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>
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<h1 id="systemd">systemd</h1>
<h2 id="start-mergerfs-after-some-arbitrary-script">Start mergerfs after some arbitrary script</h2>
<h2 id="prep-script">prep script</h2>
<p><code>/usr/local/bin/prepare-for-mergerfs</code></p>
<pre><code class="language-shell">#!/usr/bin/env sh
# Setup things
# Wait for things
/bin/sleep 10
# Report back to systemd that things are ready
/bin/systemd-notify --ready
</code></pre>
<h2 id="prep-script-system-service">prep script system service</h2>
<p><code>/etc/systemd/system/prepare-for-mergerfs.service</code></p>
<pre><code>[Unit]
Description=Dummy mount service
[Service]
Type=notify
RemainAfterExit=yes
ExecStart=/usr/local/bin/prepare-for-mergerfs
[Install]
WantedBy=default.target
</code></pre>
<h2 id="mergerfs-systemd-service">mergerfs systemd service</h2>
<p><code>/etc/systemd/system/mergerfs.service</code></p>
<pre><code>[Unit]
Description=Dummy mergerfs service
Requires=prepare-for-mergerfs.service
After=prepare-for-mergerfs.service
[Service]
Type=simple
KillMode=none
ExecStart=/usr/bin/mergerfs \
-f \
-o OPTIONS \
/mnt/filesystem0:/mnt/filesystem1 \
/mnt/mergerfs
ExecStop=/bin/fusermount -uz /mnt/mergerfs
Restart=on-failure
[Install]
WantedBy=default.target
</code></pre>
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