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|
{
lib,
sysLib,
pkgs,
config,
...
}: let
snap-sync-forked = sysLib.writeShellScriptWithLibrary {
name = "snap-sync-forked";
src = ./snap-sync-forked;
dependencies = with pkgs; [
bash
btrfs-progs
coreutils
gawk
gnugrep
snapper
util-linux
# optional:
libnotify
openssh
pv
rsync
sudo
];
};
backup-script = pkgs.writeShellScriptBin "backsnap" ''
${pkgs.util-linux}/bin/mount --mkdir "/dev/disk/by-uuid/${cfg.backupDiskUuid}" "/run/media/${cfg.backupDiskUuid}";
${snap-sync-forked}/bin/snap-sync-forked --UUID "${cfg.backupDiskUuid}" --noconfirm;
${pkgs.util-linux}/bin/umount "/run/media/${cfg.backupDiskUuid}";
'';
cfg = config.soispha.fs.backup;
in {
options.soispha.fs.backup = {
enable = lib.mkEnableOption (lib.mdDoc "backups with snap-sync");
backupDiskUuid = lib.mkOption {
type = lib.types.str;
example = lib.literalExpression "d1d20ae7-3d8a-44da-86da-677dbbb10c89";
description = lib.mdDoc "The UUID of the backup disk";
};
};
config = lib.mkIf cfg.enable {
systemd = {
services.backup = {
wantedBy = lib.mkForce [];
unitConfig = {
Description = "Backup the last snapshots of the persitent-storage subvolume.";
};
serviceConfig = {
Type = "oneshot";
ExecStart = "${backup-script}/bin/backsnap";
};
};
timers.backup = {
wantedBy = ["timers.target"];
unitConfig = {
Description = "Backup 15min after boot and every 8 hours";
};
timerConfig = {
OnBootSec = "15min";
OnUnitActiveSec = "8h";
};
};
};
};
}
|
