Filesystems: Difference between revisions

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Common example filesystem mount. You can put this in configuration.nix:

~~<syntaxhighlight lang~~=~~"nix">~~

{{file|configuration.nix|nix|3=

fileSystems."/mnt/exampleDrive" = {

device = "/dev/disk/by-uuid/4f999afe-6114-4531-ba37-4bf4a00efd9e";

fsType = "exfat";

options = [ # If you don't have this options attribute, it'll default to "defaults"

# boot options for fstab. Search up fstab mount options you can use

"users" # Allows any user to mount and unmount

"nofail" # Prevent system from failing if this drive doesn't mount

"exec" # Permit execution of binaries and other executable files

];

};

~~</syntaxhighlight>~~

}}

== Making disk visible in your file explorer ==

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Bind mounting allows a filesystem hierarchy or a file to be mounted at a different mount point. Unlike a symbolic link, a bind mount does not exist on the filesystem itself. ~~In the following example, the path {{ic|/olddir}} will be mounted in {{ic|/newdir}}~~

Bind mounting allows a filesystem hierarchy or a file to be mounted at a different mount point. Unlike a symbolic link, a bind mount does not exist on the filesystem itself.<ref>[https://en.wikipedia.org/wiki/Mount_(Unix)#Bind_mounting Wikipedia - Bind mount]</ref>

<ref>[https://en.wikipedia.org/wiki/Mount_(Unix)#Bind_mounting Wikipedia - Bind mount]</ref>

</blockquote>

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};

</syntaxhighlight>

== Tips and tricks ==

=== SSD TRIM support ===

On NixOS, [https://en.wikipedia.org/wiki/Trim_(computing) TRIM] support is enabled by default by the {{nixos:option|services.fstrim.enable}} option. This periodically discards unused blocks on supported storage devices, helping to maintain SSD performance over time.

The trimming schedule is controlled by the {{nixos:option|services.fstrim.interval}} option. Continuous trimming (as set by the <code>discard</code>, see <code>man mount(8)</code>) mount option is not recommended as it can negatively impact SSD performance.

Additionally, setting <code>noatime</code> can reduce the number of disk writes and can improve system performance.

{{file|/etc/nixos/configuration.nix|nix|

fileSystems."/".options = [ "noatime" ];

</nowiki>

}}

= References =

@@ Line 5: / Line 5: @@
 Common example filesystem mount. You can put this in configuration.nix:
-<syntaxhighlight lang="nix">
+{{file|configuration.nix|nix|3=
- fileSystems."/mnt/exampleDrive" = {
+fileSystems."/mnt/exampleDrive" = {
-   device = "/dev/disk/by-uuid/4f999afe-6114-4531-ba37-4bf4a00efd9e";
+  device = "/dev/disk/by-uuid/4f999afe-6114-4531-ba37-4bf4a00efd9e";
-   fsType = "exfat";
+  fsType = "exfat";
-   options = [ # If you don't have this options attribute, it'll default to "defaults"
+  options = [ # If you don't have this options attribute, it'll default to "defaults"
-     # boot options for fstab. Search up fstab mount options you can use
+    # boot options for fstab. Search up fstab mount options you can use
-     "users" # Allows any user to mount and unmount
+    "users" # Allows any user to mount and unmount
-     "nofail" # Prevent system from failing if this drive doesn't mount
+    "nofail" # Prevent system from failing if this drive doesn't mount
+    "exec" # Permit execution of binaries and other executable files
-   ];
+  ];
- };
+};
-</syntaxhighlight>
+}}
 == Making disk visible in your file explorer ==
@@ Line 37: / Line 37: @@
 <blockquote>
-Bind mounting allows a filesystem hierarchy or a file to be mounted at a different mount point. Unlike a symbolic link, a bind mount does not exist on the filesystem itself. In the following example, the path {{ic|/olddir}} will be mounted in {{ic|/newdir}}
+Bind mounting allows a filesystem hierarchy or a file to be mounted at a different mount point. Unlike a symbolic link, a bind mount does not exist on the filesystem itself.<ref>[https://en.wikipedia.org/wiki/Mount_(Unix)#Bind_mounting Wikipedia - Bind mount]</ref>
-<ref>[https://en.wikipedia.org/wiki/Mount_(Unix)#Bind_mounting Wikipedia - Bind mount]</ref>
 </blockquote>
@@ Line 65: / Line 64: @@
 };
 </syntaxhighlight>
+== Tips and tricks ==
+=== SSD TRIM support ===
+On NixOS, [https://en.wikipedia.org/wiki/Trim_(computing) TRIM] support is enabled by default by the {{nixos:option|services.fstrim.enable}} option. This periodically discards unused blocks on supported storage devices, helping to maintain SSD performance over time.
+The trimming schedule is controlled by the {{nixos:option|services.fstrim.interval}} option. Continuous trimming (as set by the <code>discard</code>, see <code>man mount(8)</code>) mount option is not recommended as it can negatively impact SSD performance.
+Additionally, setting <code>noatime</code> can reduce the number of disk writes and can improve system performance.
+{{file|/etc/nixos/configuration.nix|nix|
+<nowiki>
+fileSystems."/".options = [ "noatime" ];
+</nowiki>
+}}
 = References =
 <references />