IBM DR550 manual Undoing an Applied Snapshot

IBM System Storage DR550 Version 3.0 ------ 17 March 2006 Page 73

Configuration Database data stored in the system default configuration directory (DCD). If cluster services are active on the local node, applying a snapshot triggers a cluster-wide dynamic reconfiguration event. If the apply process fails or you want to go back to the previous configuration for any reason, you can re-apply an automatically saved configuration.

To apply a cluster snapshot using SMIT, perform the following steps:

1.Enter smit hacmp

2.In SMIT, select HACMP Extended Configuration > Snapshot Configuration > Apply a Cluster Snapshot and press Enter.

SMIT displays the Cluster Snapshot to Apply panel containing a list of all the cluster snapshots that exist in the directory specified by the SNAPSHOTPATH environment variable. 3. Select the cluster snapshot that you want to apply and press Enter. SMIT displays the Apply a Cluster Snapshot panel.

Undoing an Applied Snapshot

Before the new configuration is applied, the cluster snapshot facility automatically saves the current configuration in a snapshot called ~snapshot.n.odm, where n is either 1, 2, or 3. The saved snapshots are cycled so that only three generations of snapshots exist. If the apply process fails or you want to go back to the previous configuration for any reason, you can re-apply the saved configuration.

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