jasmine
d21b36a1b0
Removes persistentTimer from all borgbackup services and unnecessary network-online.target dependencies. Changes fuchsia offsite to 14:00 fixed schedule when system is reliably awake. Persistent timer catch-ups immediately after system resume caused failures due to services starting before network/system fully stabilized: - Onsite: DNS resolution failures (viridian.home.arpa) - Offsite: BorgBase connection refusals during SSH/borg handshake Fixed schedules provide reliable backups without catch-up complexity: - fuchsia offsite: 14:00 daily (typical awake time for desktop) - viridian offsite: midnight daily (always-on server) - All onsite: hourly (no catch-up needed) Offsite services retain wants/after dependencies on onsite completion to prevent race conditions on shared /btrfs-subvolumes snapshot paths. Network dependencies removed as fixed schedules run when system is already stable, eliminating timing issues with network-online.target.
117 lines
3.1 KiB
Nix
117 lines
3.1 KiB
Nix
{
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config,
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pkgs,
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...
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}: let
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hostname = config.networking.hostName;
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in {
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# Mount the data drive borg-repo subvolume for local backups
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fileSystems."/srv/borg-repo" = {
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device = "/dev/disk/by-label/data";
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fsType = "btrfs";
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options = [
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"subvol=borg-repo"
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"compress=zstd"
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];
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};
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# Create staging directory before borg service starts
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systemd.tmpfiles.rules = [
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"d /btrfs-subvolumes 0755 root root -"
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];
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# Configure service to wait for completion before marking as active
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systemd.services."borgbackup-job-onsite" = {
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serviceConfig = {
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Type = "oneshot";
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};
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};
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services.borgbackup.jobs."onsite" = {
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# Allow writing to staging directory
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readWritePaths = [ "/btrfs-subvolumes" ];
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preHook = let
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subvolumes = [
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"srv-containers"
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"srv-forgejo"
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"srv-lighttpd"
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"srv-minecraft"
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"srv-opengist"
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];
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in /* sh */ ''
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# Clean up orphaned snapshots from failed runs (crash/power loss)
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for subvol in ${toString subvolumes}; do
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[ -d "/btrfs-subvolumes/$subvol" ] && \
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${pkgs.btrfs-progs}/bin/btrfs subvolume delete \
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"/btrfs-subvolumes/$subvol" 2>/dev/null || true
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done
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# Create read-only BTRFS snapshots for backup
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for subvol in ${toString subvolumes}; do
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case "$subvol" in
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srv-containers) src="/srv/multimedia/containers" ;;
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srv-*) src="/srv/''${subvol#srv-}" ;;
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esac
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${pkgs.btrfs-progs}/bin/btrfs subvolume snapshot -r \
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"$src" "/btrfs-subvolumes/$subvol"
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done
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'';
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# Backup staging snapshots and explicit persistent files
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paths = [
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"/btrfs-subvolumes/srv-containers"
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"/btrfs-subvolumes/srv-forgejo"
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"/btrfs-subvolumes/srv-lighttpd"
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"/btrfs-subvolumes/srv-minecraft"
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"/btrfs-subvolumes/srv-opengist"
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# Persistent files (actual storage location)
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"/persist/etc/machine-id"
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"/persist/etc/ssh/ssh_host_rsa_key"
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"/persist/etc/ssh/ssh_host_rsa_key.pub"
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"/persist/etc/ssh/ssh_host_ed25519_key"
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"/persist/etc/ssh/ssh_host_ed25519_key.pub"
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# Persistent directories (actual storage location)
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"/persist/var/lib/bluetooth"
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"/persist/var/lib/nixos"
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"/persist/var/lib/private"
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"/persist/etc/NetworkManager/system-connections"
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];
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postHook = let
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subvolumes = [
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"srv-containers"
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"srv-forgejo"
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"srv-lighttpd"
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"srv-minecraft"
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"srv-opengist"
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];
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in /* sh */ ''
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# Clean up snapshots after successful backup
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for subvol in ${toString subvolumes}; do
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${pkgs.btrfs-progs}/bin/btrfs subvolume delete \
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"/btrfs-subvolumes/$subvol"
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done
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'';
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# Local repository configuration
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repo = "/srv/borg-repo/${hostname}";
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# No encryption for local backups (physical security assumed)
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encryption.mode = "none";
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compression = "zstd,9";
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startAt = "hourly";
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# Match snapper retention policy
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prune.keep = {
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hourly = 24;
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daily = 7;
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weekly = 4;
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monthly = 12;
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};
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};
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}
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