infra/scripts/nfs-change-tracker.service

[Unit]
Description=Track NFS filesystem changes for incremental offsite backup
After=local-fs.target

[Service]
Type=simple
ExecStart=/usr/bin/inotifywait -m -r \
    --format '%%w%%f' \
    -e create -e modify -e moved_to -e delete \
    --exclude '(/\..*swp$|/\.nfs|/\.Trash|\.db-shm$|\.db-wal$|\.db-journal$|/stats/.*\.stat$|^/srv/nfs/anca-elements/)' \
    /srv/nfs \
    /srv/nfs-ssd
StandardOutput=append:/mnt/backup/.nfs-changes.log
StandardError=journal
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target
consolidate offsite backup: inotify change tracking, deduplicate Synology paths [ci skip] Architecture overhaul: - Synology truenas/ renamed to nfs/, immich paths flattened to match source - Created nfs-ssd/ on Synology for SSD data (thumbs, ML cache) - Deleted pve-backup/nfs-mirror (53GB duplication eliminated) - New inotifywait daemon (nfs-change-tracker.service) watches /srv/nfs + /srv/nfs-ssd - offsite-sync Step 2: reads inotify change log, rsync --files-from only changed files - weekly-backup: removed NFS mirror step entirely (NFS goes direct to Synology) - Cleaned 9 orphaned LVs (101GB + 38 snapshots reclaimed from thin pool) Performance: incremental sync completes in seconds (vs 30+ min with full rsync) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> 2026-04-13 18:06:20 +00:00			`[Unit]`
			`Description=Track NFS filesystem changes for incremental offsite backup`
			`After=local-fs.target`

			`[Service]`
			`Type=simple`
			`ExecStart=/usr/bin/inotifywait -m -r \`
			`--format '%%w%%f' \`
			`-e create -e modify -e moved_to -e delete \`
offsite-sync-backup + nfs-change-tracker: exclude /srv/nfs/anca-elements The 771G under /srv/nfs/anca-elements is a downstream replica synced FROM Synology (/volume1/Backup/Anca/Elements) by anca-elements-sync.sh. The offsite-sync pipeline was copying it back to Synology under /volume1/Backup/Viki/nfs/anca-elements, creating a self-duplicate (~122G already partially copied during the last monthly full sync). - nfs-change-tracker.service: drop anca-elements/ from inotify watch (incremental syncs no longer queue these paths) - offsite-sync-backup.sh: --exclude='anca-elements/' on the monthly full rsync; grep -v on the incremental files-from list Deployed to 192.168.1.127:/usr/local/bin/offsite-sync-backup + /etc/systemd/system/nfs-change-tracker.service; service reloaded. 2026-05-24 11:03:09 +00:00			`--exclude '(/\..swp$\|/\.nfs\|/\.Trash\|\.db-shm$\|\.db-wal$\|\.db-journal$\|/stats/.\.stat$\|^/srv/nfs/anca-elements/)' \`
consolidate offsite backup: inotify change tracking, deduplicate Synology paths [ci skip] Architecture overhaul: - Synology truenas/ renamed to nfs/, immich paths flattened to match source - Created nfs-ssd/ on Synology for SSD data (thumbs, ML cache) - Deleted pve-backup/nfs-mirror (53GB duplication eliminated) - New inotifywait daemon (nfs-change-tracker.service) watches /srv/nfs + /srv/nfs-ssd - offsite-sync Step 2: reads inotify change log, rsync --files-from only changed files - weekly-backup: removed NFS mirror step entirely (NFS goes direct to Synology) - Cleaned 9 orphaned LVs (101GB + 38 snapshots reclaimed from thin pool) Performance: incremental sync completes in seconds (vs 30+ min with full rsync) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> 2026-04-13 18:06:20 +00:00			`/srv/nfs \`
			`/srv/nfs-ssd`
			`StandardOutput=append:/mnt/backup/.nfs-changes.log`
			`StandardError=journal`
			`Restart=always`
			`RestartSec=10`

			`[Install]`
			`WantedBy=multi-user.target`