Clone a consistency group
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Beginning with ONTAP 9.12.1, you can clone a consistency group to create a copy of a consistency group and its contents. Cloning a consistency group creates a copy of the consistency group configuration, its metadata such as application type, and all the volumes and its contents such as files, directories, LUNs or NVMe namespaces.
When cloning a consistency group, you can clone it with its current configuration, but with volume contents as they are or based on an existing consistency group Snapshot.
Cloning a consistency group is supported only for the entire consistency group. You cannot clone an individual child consistency group in a hierarchical relationship: only the complete consistency group configuration can be cloned.
When you clone a consistency group, the following components are not cloned:
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iGroups
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LUN maps
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NVMe subsystems
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NVMe namespace subsystem maps
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When you clone a consistency group, ONTAP will not create SMB shares for the cloned volumes if a share name is not specified. * Cloned consistency groups are not mounted if a junction path is not specified.
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If you attempt to clone a consistency group based on a Snapshot that does not reflect the consistency group's current constituent volumes, the operation will fail.
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After you clone a consistency group, you need to perform the appropriate mapping operation.
Refer to Map igroups to multiple LUNs or Map an NVMe namespace to a subsystem for more information.
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Cloning a consistency group is not supported for a consistency group in a SnapMirror Business Continuity relationship or with any associated DP volumes.
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Select Storage > Consistency groups.
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Select the consistency group you want to clone from the Consistency Group menu.
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At the top right of the overview page for the consistency group, select Clone.
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Enter a name for the new, cloned consistency group or accept the default name.
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Choose if you want to enable Thin Provisioning.
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Choose Split Clone if you want to dissociate the consistency group from its source and allocate additional disk space for the cloned consistency group.
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To clone the consistency group in its current state, choose Add a new Snapshot copy.
To clone the consistency group based on a snapshot, choose Use an existing Snapshot copy. Selecting this option will open a new sub-menu. Choose the Snapshot that you want to use as the basis for the clone operation.
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Select Clone.
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Return to the Consistency Group menu to confirm your consistency group has been cloned.
Beginning with ONTAP 9.14.1, you can clone a consistency group using the CLI.
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The
consistency-group clone create
command clones the consistency group at its current point-in-time status. To base the clone operation on a Snapshot, include the-source-snapshot
parameter.consistency-group clone create -vserver svm_name -consistency-group clone_name -source-consistency-group consistency_group_name [-source-snapshot snapshot_name]