bdd7b5a3ab
This adds a simple configuration for sending snapshots to a remote system using zfs-replicate that ties into the autoSnapshot settings already present in services.zfs.autoSnapshot.
90 lines
2.6 KiB
Nix
90 lines
2.6 KiB
Nix
{ lib, pkgs, config, ... }:
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with lib;
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let
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cfg = config.services.zfs.autoReplication;
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recursive = optionalString cfg.recursive " --recursive";
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followDelete = optionalString cfg.followDelete " --follow-delete";
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in {
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options = {
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services.zfs.autoReplication = {
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enable = mkEnableOption "ZFS snapshot replication.";
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followDelete = mkOption {
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description = "Remove remote snapshots that don't have a local correspondant.";
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default = true;
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type = types.bool;
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};
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host = mkOption {
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description = "Remote host where snapshots should be sent.";
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example = "example.com";
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type = types.str;
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};
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identityFilePath = mkOption {
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description = "Path to SSH key used to login to host.";
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example = "/home/username/.ssh/id_rsa";
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type = types.path;
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};
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localFilesystem = mkOption {
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description = "Local ZFS fileystem from which snapshots should be sent. Defaults to the attribute name.";
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example = "pool/file/path";
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type = types.str;
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};
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remoteFilesystem = mkOption {
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description = "Remote ZFS filesystem where snapshots should be sent.";
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example = "pool/file/path";
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type = types.str;
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};
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recursive = mkOption {
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description = "Recursively discover snapshots to send.";
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default = true;
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type = types.bool;
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};
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username = mkOption {
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description = "Username used by SSH to login to remote host.";
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example = "username";
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type = types.str;
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};
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};
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};
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config = lib.mkIf cfg.enable {
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environment.systemPackages = [
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pkgs.lz4
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];
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systemd.services."zfs-replication" = {
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after = [
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"zfs-snapshot-daily.service"
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"zfs-snapshot-frequent.service"
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"zfs-snapshot-hourly.service"
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"zfs-snapshot-monthly.service"
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"zfs-snapshot-weekly.service"
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];
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description = "ZFS Snapshot Replication";
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documentation = [
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"https://github.com/alunduil/zfs-replicate"
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];
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restartIfChanged = false;
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serviceConfig.ExecStart = "${pkgs.zfs-replicate}/bin/zfs-replicate${recursive} -l ${escapeShellArg cfg.username} -i ${escapeShellArg cfg.identityFilePath}${followDelete} ${escapeShellArg cfg.host} ${escapeShellArg cfg.remoteFilesystem} ${escapeShellArg cfg.localFilesystem}";
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wantedBy = [
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"zfs-snapshot-daily.service"
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"zfs-snapshot-frequent.service"
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"zfs-snapshot-hourly.service"
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"zfs-snapshot-monthly.service"
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"zfs-snapshot-weekly.service"
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];
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};
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};
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meta = {
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maintainers = with lib.maintainers; [ alunduil ];
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};
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}
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