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nixos/zfs: add trim service #65331

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merged 1 commit into from Jul 26, 2019
Merged

nixos/zfs: add trim service #65331

merged 1 commit into from Jul 26, 2019

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Mic92
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@Mic92 Mic92 commented Jul 24, 2019

Introduces a trim timer similar to the fstrim service.
According to zpool(8) for consumer hardware periodic manual TRIM
is preferred over automatic TRIM that ZFS implements.
The period of one week is based on recommendations of fstrim.

Motivation for this change
Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nix-review --run "nix-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.

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@markuskowa markuskowa left a comment

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Line 4 can be removed?

 #   - crontab for scrubs, etc

@Mic92
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Mic92 commented Jul 24, 2019

  • removed outdated comment

@@ -535,5 +546,20 @@ in
};
};
})

(mkIf cfgTrim.enable {
systemd.timers.zpool-trim = {
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Isn't it short to just add startAt to the service itself? The timer then gets created automatically.

Introduces a trim timer similar to the fstrim service.
According to zpool(8) for consumer hardware periodic manual TRIM
is preferred over automatic TRIM that ZFS implements.
The period of one week is based on recommendations of fstrim.
@Mic92 Mic92 merged commit 741046a into NixOS:master Jul 26, 2019
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2 participants