Volume Clone Support
Creating a new volume as a duplicate of an existing volume
Longhorn supports CSI volume cloning.
Suppose that you have the following source-pvc
:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: source-pvc
spec:
storageClassName: longhorn
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
You can create a new PVC that has the exact same content as the source-pvc
by applying the following yaml file:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: cloned-pvc
spec:
storageClassName: longhorn
dataSource:
name: source-pvc
kind: PersistentVolumeClaim
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
Note: In addition to the requirements listed at CSI volume cloning, the
cloned-pvc
must have the sameresources.requests.storage
as thesource-pvc
.
Note:
- The Longhorn UI pre-fills certain fields and prevents you from modifying the values to ensure that those match the settings of the source volume.
- Longhorn automatically attaches the new volume, clones the source volume, and then detaches the new volume.
Available since v1.2.0
© 2019-2024 Longhorn Authors | Documentation Distributed under CC-BY-4.0
© 2024 The Linux Foundation. All rights reserved. The Linux Foundation has registered trademarks and uses trademarks. For a list of trademarks of The Linux Foundation, please see our Trademark Usage page.