Swap: Difference between revisions

Revision as of 17:14, 8 July 2021

Configuration

Swap on NixOS is set with the option swapDevices on /etc/nixos/hardware-configuration.nix.

Disable swap

To remove all swap devices from NixOS, set

swapDevices = lib.mkForce [ ];

This will remove the swap partition or file from being included in /etc/fstab.

If you are using GPT partitioning tables, systemd-gpt-auto-generator(8) will still mount your swap partition automatically. You must therefore turn on attribute 63 on your partition in the partition table. This can be done with gptfdisk or similar:

gdisk /dev/sda
x
a
<partition number>
63
<enter>
w

@@ Line 1: / Line 1: @@
+== Configuration ==
+Swap on NixOS is set with the option <code>swapDevices</code> on <code>/etc/nixos/hardware-configuration.nix</code>.
-== Disable swap ==
-Swap on NixOS is set with the option: <code>swapDevices</code>. This will be in hardware-configuration-nix.
+=== Disable swap ===
-To remove all swap devices from NixOS  you must therefore set
+To remove all swap devices from NixOS, set
 <syntaxhighlight lang="nix">
@@ Line 8: / Line 10: @@
 </syntaxhighlight>
-This will remove the swap partition/file from being included in <code>/etc/fstab</code>
+This will remove the swap partition or file from being included in <code>/etc/fstab</code>.
-If you are using GPT partitioning tables <code>systemd-gpt-auto-generator(8)</code> will still mount your swap partition automatically.
-You must therefore turn on attribute 63 on your partition in the partition table.
-This can be done with gptfdisk or similar:
+If you are using GPT partitioning tables, <code>systemd-gpt-auto-generator(8)</code> will still mount your swap partition automatically. You must therefore turn on attribute 63 on your partition in the partition table. This can be done with gptfdisk or similar:
 <syntaxhighlight lang="console">