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{ config, pkgs, lib, flakeInputs, ... }:
with lib;
let
zfssnap = flakeInputs.mach-nix.lib.${config.nixpkgs.system}.buildPythonPackage rec {
pname = "zfssnap";
src = ./zfssnap;
version = "0.0.0";
ignoreDataOutdated = true;
requirements = ''
pyxdg
pytimeparse
python-dateutil
'';
postInstall = ''
wrapProgram $out/bin/zfssnap \
--prefix PATH : ${makeBinPath [config.boot.zfs.package]}
'';
};
cfg = config.services.zfssnap;
in {
options = {
services.zfssnap = {
enable = mkEnableOption "zfssnap service";
config = mkOption {
type = with types; attrsOf (attrsOf str);
default = {
keep = {
within = "15m";
"5m" = "48";
"15m" = "32";
hourly = "48";
"4h" = "24";
"12h" = "12";
daily = "62";
halfweekly = "32";
weekly = "24";
monthly = "-1";
};
};
};
snapInterval = mkOption {
type = types.str;
default = "*-*-* *:00/5:00";
};
verbosity = mkOption {
type = types.int;
default = 2;
};
extraPruneArgs = mkOption {
type = with types; listOf str;
default = [];
};
extraAutosnapArgs = mkOption {
type = with types; listOf str;
default = [];
};
};
};
config = mkIf cfg.enable {
systemd.services."zfssnap" = {
description = "Create automatic ZFS snapshots";
after = [ "zfs-import.target" ];
wants = [ "zfssnap-prune.service" ];
before = [ "zfssnap-prune.service" ];
serviceConfig = {
Type = "oneshot";
ExecStart = "${zfssnap}/bin/zfssnap --verbosity=${toString cfg.verbosity} autosnap ${escapeShellArgs cfg.extraAutosnapArgs}";
LogRateLimitIntervalSec = 0;
};
};
systemd.services."zfssnap-prune" = {
description = "Prune automatic ZFS snapshots";
after = [ "zfs-import.target" "zfssnap.service" ];
serviceConfig = {
Type = "oneshot";
ExecStart = let
mkSectionName = name: strings.escape [ "[" "]" ] (strings.toUpper name);
zfssnapConfig = generators.toINI { inherit mkSectionName; } cfg.config;
in "${zfssnap}/bin/zfssnap --verbosity=${toString cfg.verbosity} prune --config=${pkgs.writeText "zfssnap.ini" zfssnapConfig} ${escapeShellArgs cfg.extraPruneArgs}";
LogRateLimitIntervalSec = 0;
};
};
systemd.timers."zfssnap" = {
wantedBy = ["timers.target"];
timerConfig = {
OnCalendar = cfg.snapInterval;
Persistent = true;
};
};
environment.systemPackages = [zfssnap];
};
}
|
