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.
96 lines
3 KiB
Nix
96 lines
3 KiB
Nix
{
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config,
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pkgs,
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...
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}: {
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# Encrypted passphrase for offsite borgbackup repository
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age.secrets.borgbackup = {
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rekeyFile = ./passphrase.age;
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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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# Wait for onsite backup to complete before starting offsite
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systemd.services."borgbackup-job-offsite" = {
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wants = ["borgbackup-job-onsite.service"];
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after = ["borgbackup-job-onsite.service"];
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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."offsite" = {
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# Allow writing to staging directory
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readWritePaths = [ "/btrfs-subvolumes" ];
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preHook = /* sh */ ''
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# Clean up orphaned snapshots from failed runs (crash/power loss)
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[ -d "/btrfs-subvolumes/hm-sajenim" ] && \
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${pkgs.btrfs-progs}/bin/btrfs subvolume delete \
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"/btrfs-subvolumes/hm-sajenim" 2>/dev/null || true
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# Create read-only BTRFS snapshot for backup
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${pkgs.btrfs-progs}/bin/btrfs subvolume snapshot -r \
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"/home/sajenim" "/btrfs-subvolumes/hm-sajenim"
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'';
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# Backup explicit home directories and persistent files
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paths = [
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# Home directories (valuable user data only)
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"/btrfs-subvolumes/hm-sajenim/Documents"
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"/btrfs-subvolumes/hm-sajenim/Pictures"
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"/btrfs-subvolumes/hm-sajenim/Videos"
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"/btrfs-subvolumes/hm-sajenim/Music"
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"/btrfs-subvolumes/hm-sajenim/Downloads"
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"/btrfs-subvolumes/hm-sajenim/Academics"
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"/btrfs-subvolumes/hm-sajenim/Notes"
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"/btrfs-subvolumes/hm-sajenim/Library"
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# Dotfiles (critical user configuration)
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"/btrfs-subvolumes/hm-sajenim/.ssh"
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"/btrfs-subvolumes/hm-sajenim/.gnupg"
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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 = /* sh */ ''
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# Clean up snapshots after successful backup
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${pkgs.btrfs-progs}/bin/btrfs subvolume delete \
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"/btrfs-subvolumes/hm-sajenim"
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'';
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# Remote repository configuration
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repo = "li9kg944@li9kg944.repo.borgbase.com:repo";
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encryption = {
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mode = "repokey-blake2";
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passCommand = "cat ${config.age.secrets.borgbackup.path}";
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};
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environment.BORG_RSH = "ssh -i /etc/ssh/ssh_host_ed25519_key";
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compression = "zstd,9";
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startAt = "14:00"; # Daily at 2pm when system is reliably awake
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# Retention policy for daily remote backups
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prune.keep = {
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daily = 7; # Keep 7 daily backups (1 week)
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weekly = 4; # Keep 4 weekly backups (1 month)
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monthly = 12; # Keep 12 monthly backups (1 year)
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};
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};
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}
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