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bin-there-done-that/genesishostingmd/backups/backup-integrity.md

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Backup Integrity

We verify all backups regularly to ensure they are complete, uncorrupted, and restorable.

Weekly Tasks

  • ZFS scrubs for all pools
  • Hash checks (SHA-256) for tarballs and dumps
  • rsync --checksum verification for remote mirrors

Alerts

  • Email/Mastodon alert if:
    • ZFS reports checksum errors
    • Scheduled backup is missing
    • Remote sync fails or lags > 24h

Tools Used

  • zfs scrub
  • sha256sum + custom validation script
  • rclone sync logs
  • Telegram bot and Genesis Shield notifications