Restoring Data from Snapshots

RestoringSnapshot fromrestore snapshotsprocedures in eEKAS should be treatedplanned as an operational procedure. The exact action depends onaround the protected Ceph resource and the reasonclient workload using it. Treat restores as operational changes, especially for recovery.block devices and active client access.

Before restoring

• Identify the affected share,eEKAS/Ceph target or volume.resource.
• Confirm the required recovery point and itssnapshot timestamp.
• Notify connected users or applications before changing live data.
• CreateConsider creating a fresh snapshot before performing destructive recovery ifof the current state maybefore stilla bedestructive needed.rollback.

Restore approachesguidance

• UsePrefer file-levelthe smallest restore whenscope onlythat a small number of files or folders are affected.
• Use full resource rollback only whensolves the whole share or target must return to the snapshot state.incident.
• For blockblock-style targets,access, stop or disconnect client accessclients before rollbackrolling back to avoid filesystem inconsistency.
• For shared access, coordinate with users so open files and application writes are not lost unexpectedly.

After restore

1. Verify the restored data from a client.
2. Check application consistency.
3. Confirm snapshotthat schedulescheduled status.snapshots are still configured as intended.
4. Document the incident, selected snapshot and the final result.

IfThis apage intentionally describes eEKAS/Ceph snapshot actionrecovery fails,only. checkClassic whetherXFS/ZFS snapshot spacerestore isworkflows reservedbelong and whetherin the selecteddocumentation resource supportsfor the requestedrespective snapshoteuroNAS operation.products.