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KVM snapshots and recovery

Back up before changes, check storage and plan restoration.

Snapshots preserve virtual disk state for later recovery. The exact workflow depends on the KVM backend and VM state.

Step by step

  1. Open Snapshots and check existing snapshots and available storage.
  2. For an important backup, cleanly shut down the guest where possible so files and databases are consistent.
  3. Create a snapshot with a recognizable name and wait for confirmation.
  4. Verify its entry before changing the operating system, drivers or important applications.
  5. Before restoring, copy newer important data elsewhere. Deliberately select the older snapshot and confirm restoration.
  6. After startup, check file state, applications and connectivity. Delete old snapshots only when no longer needed.

Check the result

Restored data matches the chosen snapshot. Changes made after that snapshot are lost.

Important

Snapshots use storage and do not replace an external backup. A disk snapshot does not automatically contain all running memory or independent copies of every mounted medium.