Storage optimization: Difference between revisions

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/run/booted-system -> /nix/store/8jkrl9jyq7hqxb6xpwcaghpdm26gq98j-nixos-system-iron-16.0916.09pre.custom

/run/current-system -> /nix/store/wmndyzzrbc9fyjw844jmvzwgwgcinq7s-nixos-system-iron-16.0916.09pre.custom</syntaxhighlight>

~~=== Don't forget to run <code>nix-collect-garbage -d</code> as root ===~~

Run <code>nix-collect-garbage -d</code> ~~with <code>sudo</code> or <code>su</code>, or logged in as root, otherwise you are clearing~~ only ~~your old~~ user profiles, ~~not system-wide profiles~~.

=== Run as root ===

<code>nix-collect-garbage -d</code> operates only for the current user. To clear system profiles, with run it with root privileges.

=== Look for <code>result</code> symlinks ===

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Especially look for system derivations. Those are created in many cases, for example, when running <code>nixos-rebuild build-vm</code>

=== ~~Don't forget to reboot~~ ===

=== Reboot ===

As you see, the reference in <code>/run/booted-system</code> is a GC root, so it won't be cleared until reboot. If you don't want to reboot, just <code>rm /run/booted-system</code> that link and rerun <code>sudo nix-collect-garbage</code>.

@@ Line 32: / Line 32: @@
 /run/booted-system -> /nix/store/8jkrl9jyq7hqxb6xpwcaghpdm26gq98j-nixos-system-iron-16.0916.09pre.custom
 /run/current-system -> /nix/store/wmndyzzrbc9fyjw844jmvzwgwgcinq7s-nixos-system-iron-16.0916.09pre.custom</syntaxhighlight>
-=== Don't forget to run <code>nix-collect-garbage -d</code> as root ===
-Run <code>nix-collect-garbage -d</code> with <code>sudo</code> or <code>su</code>, or logged in as root, otherwise you are clearing only your old user profiles, not system-wide profiles.
+=== Run as root ===
+<code>nix-collect-garbage -d</code> operates only for the current user. To clear system profiles, with run it with root privileges.
 === Look for <code>result</code> symlinks ===
@@ Line 55: / Line 55: @@
 Especially look for system derivations. Those are created in many cases, for example, when running <code>nixos-rebuild  build-vm</code>
-=== Don't forget to reboot ===
+=== Reboot ===
 As you see, the reference in <code>/run/booted-system</code> is a GC root, so it won't be cleared until reboot. If you don't want to reboot, just <code>rm /run/booted-system</code> that link and rerun <code>sudo nix-collect-garbage</code>.