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<meta name="description" content="mergerfs - a featureful union filesystem">
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mergerfs
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UPGRADE
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mergerfs
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mergerfs
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<a href="../../.." class="md-nav__link">
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About
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</a>
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Documentation
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Documentation
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HOW IT WORKS
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</a>
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<a href="../terminology/" class="md-nav__link">
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<span class="md-ellipsis">
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TERMINOLOGY
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</a>
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BASIC SETUP
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</a>
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<li class="md-nav__item">
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OPTIONS
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</a>
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<li class="md-nav__item">
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<a href="../functions_categories_and_policies/" class="md-nav__link">
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<span class="md-ellipsis">
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FUNCTIONS, CATEGORIES and POLICIES
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</a>
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ERROR HANDLING
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</a>
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INSTALL
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</a>
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BUILD
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</a>
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<a href="./" class="md-nav__link md-nav__link--active">
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<span class="md-ellipsis">
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UPGRADE
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</span>
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</a>
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RUNTIME INTERFACES
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<a href="../tooling/" class="md-nav__link">
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<span class="md-ellipsis">
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TOOLING
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<li class="md-nav__item">
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<a href="../caching/" class="md-nav__link">
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<span class="md-ellipsis">
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CACHING
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</a>
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<a href="../performance/" class="md-nav__link">
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<span class="md-ellipsis">
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PERFORMANCE
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<a href="../benchmarking/" class="md-nav__link">
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<span class="md-ellipsis">
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BENCHMARKING
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</a>
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TIPS / NOTES
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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="upgrade">UPGRADE</h1>
|
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<p>mergerfs can be upgraded live by mounting on top of the previous
|
|
instance. Simply install the new version of mergerfs and follow the
|
|
instructions below.</p>
|
|
<p>Run mergerfs again or if using <code>/etc/fstab</code> call for it to mount
|
|
again. Existing open files and such will continue to work fine though
|
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they won't see runtime changes since any such change would be the new
|
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mount. If you plan on changing settings with the new mount you should
|
|
/ could apply those before mounting the new version.</p>
|
|
<pre><code>$ sudo mount /mnt/mergerfs
|
|
$ mount | grep mergerfs
|
|
media on /mnt/mergerfs type mergerfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other)
|
|
media on /mnt/mergerfs type mergerfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other)
|
|
</code></pre>
|
|
<p>A problem with this approach is that the underlying instance will
|
|
continue to run even if the software using it stop or are
|
|
restarted. To work around this you can use a "lazy umount". Before
|
|
mounting over top the mount point with the new instance of mergerfs
|
|
issue: <code>umount -l <mergerfs_mountpoint></code>. Or you can let mergerfs do
|
|
it by setting the option <code>lazy-umount-mountpoint=true</code>.</p>
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