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zfs-tuning

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root@nixos-nas 2025-06-11 18:37:36 +00:00
parent 36c3c1eae6
commit a55b594483
2 changed files with 41 additions and 0 deletions
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1
flake.nix
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@ -21,6 +21,7 @@
./disko.nix # disko partitionierung
./hardware/hardware-configuration.nix # generiertes hardware-configuration.nix
./configuration.nix # deine eigentliche Config
./modules/zfs.nix
disko.nixosModules.disko
nixos-hardware.nixosModules.common-pc-ssd
];

40
modules/zfs.nix Normal file
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@ -0,0 +1,40 @@
{ config, pkgs, lib, ... }:
{
#### 1. Pool-Eigenschaften (permanent) ##############################
# wird von systemd-Units bei jedem Boot angewendet
services.zfs = {
trim.enable = true; # weekly zpool trim
autoScrub = {
enable = true; # weekly scrub
interval = "Sun 04:00"; # optional ändern
pools = [ "rpool" "tank" ];
};
autoSnapshot = {
enable = true;
frequent = 4; # alle 15 min, 4 Aufbewahrung
hourly = 24;
daily = 7;
weekly = 4;
monthly = 3;
};
};
#### 2. ARC-Größe begrenzen (z. B. 8 GiB) ###########################
# 8 * 1024^3 = 8589934592
boot.kernelParams = [ "zfs.zfs_arc_max=8589934592" ]; # ≈ 16 % von 48 GB RAM :contentReference[oaicite:0]{index=0}
#### 3. Zusätzliche Module / Tools ##################################
environment.systemPackages = with pkgs; [
zfs # zpool, zfs
zfs-prune-snapshots
arc_summary
];
#### 4. Optional: Sanoid statt OpenSolaris-Snapshots ################
# services.sanoid.enable = true;
# services.sanoid.datasets."tank/media" = {
# hourly = 24; daily = 7; monthly = 3;
# };
}