84 lines
2 KiB
Nix
84 lines
2 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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with lib; let
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cfg = config.services.borgbackup;
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secrets = config.sops.secrets;
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in {
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# Make this file declare default settings
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options.services.borgbackup = {
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defaults = mkOption {
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type = types.attrs;
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};
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configs = mkOption {
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type = types.attrs;
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};
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};
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config = {
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programs.ssh.knownHosts = {
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pve.publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG/4mrp8E4Ittwg8feRmPtDHSDR2+Pq4uZHeF5MweVcW";
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};
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services.borgbackup = {
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defaults = {
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environment = mkDefault {BORG_RSH = "ssh -i ${secrets.borg-ssh.path}";};
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repo = mkDefault "ssh://matt@pve/data/backups/borg";
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encryption = mkDefault {
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mode = "repokey";
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passCommand = let
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cat = "${pkgs.coreutils}/bin/cat";
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key = secrets.borg-repo.path;
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in "${cat} ${key}";
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};
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# Run every 3 hours
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startAt = mkDefault "00/3:00";
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compression = mkDefault "auto,lzma";
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};
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jobs = let
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tempJobs = mapAttrs (_: v: cfg.defaults // v) cfg.configs;
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in
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mapAttrs (n: v: let
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attrs = filterAttrs (n: _: n != "preHook" || n != "postHook" || n != "paths") v;
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pathPrefix = "/root/snaps";
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snapPath = "${pathPrefix}/${n}";
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in
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attrs
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// {
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paths = map (x: snapPath + x) v.paths;
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preHook =
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v.preHook
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or ""
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+
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/*
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bash
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*/
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''
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if [[ ! -d ${pathPrefix} ]]; then
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mkdir -p ${pathPrefix}
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fi
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${pkgs.btrfs-progs}/bin/btrfs subvolume snapshot -r / ${snapPath}
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'';
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postHook =
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/*
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bash
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*/
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''
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${pkgs.btrfs-progs}/bin/btrfs subvolume delete ${snapPath}
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''
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+ v.postHook or "";
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})
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tempJobs;
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};
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};
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}
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