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|       /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> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../setup/upgrade/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     Upgrade | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../setup/build/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     Build | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|           </ul> | |
|         </nav> | |
|        | |
|     </li> | |
|    | |
| 
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|      | |
|        | |
|        | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../terminology/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     Terminology | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|      | |
|        | |
|        | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../intro_to_filesystems/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     Intro to Filesystems | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|      | |
|        | |
|        | |
|    | |
|    | |
|    | |
|    | |
|      | |
|      | |
|      | |
|      | |
|      | |
|     <li class="md-nav__item md-nav__item--nested"> | |
|        | |
|          | |
|          | |
|         <input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6" > | |
|          | |
|            | |
|           <label class="md-nav__link" for="__nav_6" id="__nav_6_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_6_label" aria-expanded="false"> | |
|           <label class="md-nav__title" for="__nav_6"> | |
|             <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/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/branches-mount-timeout/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     branches-mount-timeout | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
 | |
|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/functions_categories_policies/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     functions, categories and policies | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
 | |
|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/minfreespace/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     minfreespace | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <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/moveonenospc/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     moveonenospc | |
|      | |
|   </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/passthrough/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     passthrough | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
 | |
|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/readahead/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     readahead | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/inodecalc/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     inodecalc | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/threads/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     threads | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/pin-threads/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     pin-threads | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/link_cow/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     link_cow | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <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> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/follow-symlinks/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     follow-symlinks | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/link-exdev/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     link-exdev | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/rename-exdev/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     rename-exdev | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/symlinkify/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     symlinkify | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/nullrw/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     nullrw | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/xattr/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     xattr | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/nfsopenhack/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     nfsopenhack | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/statfs/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     statfs / statvfs | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/flush-on-close/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     flush-on-close | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/export-support/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     export-support | |
|      | |
|   </span> | |
|    | |
| 
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|       </a> | |
|     </li> | |
|    | |
| 
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|                | |
|              | |
|                | |
|                  | |
|    | |
|    | |
|    | |
|    | |
|     <li class="md-nav__item"> | |
|       <a href="../config/kernel-permissions-check/" class="md-nav__link"> | |
|          | |
|    | |
|    | |
|   <span class="md-ellipsis"> | |
|     kernel-permissions-check | |
|      | |
|   </span> | |
|    | |
| 
 | |
|       </a> | |
|     </li> | |
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| 
 | |
| <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 <a href="../config/options/">options</a> and effectively all of | |
| them are functional in nature. What that means is that there is no | |
| "best" or "fastest" configuration. No "make faster" | |
| options. Everything changes behavior. Sometimes those changes in | |
| behavior affect performance.</p> | |
| <p>If you don't already know that you have special requirements then use | |
| one of the following option sets as it will cover the common use | |
| cases.</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=pfrd</li> | |
| <li>func.getattr=newest</li> | |
| <li>dropcacheonclose=false</li> | |
| </ul> | |
| <p>In previous versions of Linux it was unable to support <code>mmap</code> if <a href="../config/cache/">page | |
| caching</a> was disabled (ie: | |
| <code>cache.files=off</code>). However, it now will enable page caching if needed | |
| for a particular file if <code>mmap</code> is requested.</p> | |
| <p><code>mmap</code> is needed by certain software to read and write to a | |
| file. However, many software could work without it and fail to have | |
| proper error handling. Many programs that use sqlite3 will require | |
| <code>mmap</code> despite <a href="../known_issues_bugs/#sqlite3-plex-jellyfin-do-not-work-with-mergerfs">sqlite3 working perfectly | |
| fine</a> | |
| without it (and in some cases 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=pfrd</li> | |
| <li>func.getattr=newest</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=pfrd</li> | |
| <li>func.getattr=newest</li> | |
| <li>dropcacheonclose=false</li> | |
| </ul> | |
| <h2 id="usage">Usage</h2> | |
| <p>For some suggestions on branch setup see <a href="../config/branches/#branch-setup">the page on | |
| branches</a>.</p> | |
| <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,category.create=pfrd,func.getattr=newest,dropcacheonclose=false /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,category.create=pfrd,func.getattr=newest,dropcacheonclose=false 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">pfrd</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">func.getattr</span><span class="o">=</span><span class="s">newest</span> | |
| </span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4"></a><a href="#__codelineno-3-4"><span class="linenos" data-linenos="4 "></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 will | |
| resolve 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=pfrd </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 func.getattr=newest </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">-o dropcacheonclose=false </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">/mnt/hdd0:/mnt/hdd1 </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="w">  </span><span class="s">/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">ExecStop</span><span class="o">=</span><span class="s">/bin/fusermount -uz /media</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 class="na">Restart</span><span class="o">=</span><span class="s">on-failure</span> | |
| </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><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="k">[Install]</span> | |
| </span><span id="__span-5-20"><a id="__codelineno-5-20" name="__codelineno-5-20"></a><a href="#__codelineno-5-20"><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> | |
| <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 before | |
| you 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=pfrd </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 func.getattr=newest </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">-o dropcacheonclose=false </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">/mnt/hdd0:/mnt/hdd1 </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="w">  </span><span class="s">/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">ExecStop</span><span class="o">=</span><span class="s">/bin/fusermount -uz /media</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 class="na">Restart</span><span class="o">=</span><span class="s">on-failure</span> | |
| </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><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="k">[Install]</span> | |
| </span><span id="__span-8-21"><a id="__codelineno-8-21" name="__codelineno-8-21"></a><a href="#__codelineno-8-21"><span class="linenos" data-linenos="21 "></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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