For traditional snapshots, the snapshot plex is resynchronized from the data in the original volume during a
Resynchronizing an original volume from a snapshot shows an alternative where you can choose the snapshot plex as the preferred copy of the data when performing a snapback.
Resynchronizing an original volume from a snapshot
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Specifying the option
-o resyncfromreplica to
vxassist resynchronizes the original volume from the data in the snapshot.
snapbackoperation that specifies the option
resyncfromreplicato resynchronize the volume from a snapshot. Stop any application, such as a database, and unmount any file systems that are configured to use the volume.
For instant snapshots, the
restore command may be used to restore the contents of the original volume from an instant snapshot or from a volume derived from an instant snapshot. The volume that is used to restore the original volume can either be a true backup of the contents of the original volume at some point in time, or it may have been modified in some way (for example, by applying a database log replay or by running a file system checking utility such as
fsck) to create a synthetic replica. All synchronization of the contents of this backup or synthetic replica volume must have been completed before the original volume can be restored from it. The original volume is immediately available for use while its contents are being restored.
You can perform either a destructive or non-destructive restoration of an original volume from an instant snapshot. Only non-destructive restoration is possible from a space-optimized snapshot. In this case, the snapshot remains in existence after the restoration is complete.