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doc: update snap-clone with rbd snapshot
RBD Snapshot doc was the part of the README.md file. Hence, renamed the cephfs-snap-clone.md file to snap-clone.md file and moved the rbd snapshot document there. Signed-off-by: yati1998 <ypadia@redhat.com>
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# Create CephFS snapshot and Clone Volume
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# Create snapshot and Clone Volume
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- [Create CephFS snapshot and Clone Volume](#create-cephfs-snapshot-and-clone-volume)
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- [Prerequisite](#prerequisite)
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- [Snapshot](#snapshot)
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- [Create snapshotclass](#create-snapshotclass)
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- [Create snapshot](#create-snapshot)
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- [Restore snapshot to a new PVC](#restore-snapshot-to-a-new-pvc)
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- [Clone PVC](#clone-pvc)
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- [Create CephFS Snapshot and Clone Volume](#create-cephfs-snapshot-and-clone-volume)
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- [Create CephFS SnapshotClass](#create-cephfs-snapshotclass)
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- [Create CephFS Snapshot](#create-cephfs-snapshot)
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- [Restore CephFS Snapshot to a new PVC](#restore-cephfs-snapshot-to-a-new-pvc)
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- [Clone CephFS PVC](#clone-cephfs-pvc)
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- [Create RBD Snapshot and Clone Volume](#create-rbd-snapshot-and-clone-volume)
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- [Create RBD SnapshotClass](#create-rbd-snapshotclass)
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- [Create RBD Snapshot](#create-rbd-snapshot)
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- [Restore RBD Snapshot to a new PVC](#restore-rbd-snapshot-to-a-new-pvc)
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- [Clone RBD PVC](#clone-rbd-pvc)
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## Prerequisite
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@ -42,15 +46,15 @@
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Also PVC cannot be deleted if it's having snapshots. Make sure all the snapshots
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on the PVC are deleted before you delete the PVC.**
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## Snapshot
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## Create CephFS Snapshot and Clone Volume
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### Create snapshotclass
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### Create SnapshotClass
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```console
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kubectl create -f ../examples/cephfs/snapshotclass.yaml
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```
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### Create snapshot
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### Create Snapshot
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The snapshot is created on/for an existing PVC. You should
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have a PVC in bound state before creating snapshot from it.
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@ -90,7 +94,7 @@ NAME READYTOUSE RESTORESIZE DE
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snapcontent-34476204-a14a-4d59-bfbc-2bbba695652c true 1073741824 Delete cephfs.csi.ceph.com csi-cephfsplugin-snapclass cephfs-pvc-snapshot 64s
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```
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## Restore snapshot to a new PVC
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### Restore Snapshot to a new PVC
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```console
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kubectl create -f ../examples/cephfs/pvc-restore.yaml
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@ -103,7 +107,7 @@ csi-cephfs-pvc Bound pvc-1ea51547-a88b-4ab0-8b4a-812caeaf025d 1Gi
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cephfs-pvc-restore Bound pvc-95308c75-6c93-4928-a551-6b5137192209 1Gi RWX csi-cephfs-sc 11m
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```
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## Clone PVC
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### Clone PVC
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```console
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kubectl create -f ../examples/cephfs/pvc-clone.yaml
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@ -116,3 +120,100 @@ csi-cephfs-pvc Bound pvc-1ea51547-a88b-4ab0-8b4a-812caeaf025d 1Gi
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cephfs-pvc-clone Bound pvc-b575bc35-d521-4c41-b4f9-1d733cd28fdf 1Gi RWX csi-cephfs-sc 39s
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cephfs-pvc-restore Bound pvc-95308c75-6c93-4928-a551-6b5137192209 1Gi RWX csi-cephfs-sc 55m
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```
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## Create RBD Snapshot and Clone Volume
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In the `examples/rbd` directory you will find two files related to snapshots:
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[snapshotclass.yaml](../examples/rbd/snapshotclass.yaml)
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and [snapshot.yaml](../examples/rbd/snapshot.yaml)
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Once you created RBD PVC, you'll need to customize `snapshotclass.yaml` and
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make sure the `clusterid` parameter matches `clusterid` mentioned in the
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storageclass from which the PVC got created.
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If you followed the documentation to create the rbdplugin, you shouldn't
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have to edit any other file.
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After configuring everything you needed, deploy the snapshotclass:
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### Create RBD-SnapshotClass
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```bash
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kubectl create -f snapshotclass.yaml
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```
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### Verify that the SnapshotClass was created
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```console
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$ kubectl get volumesnapshotclass
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NAME AGE
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csi-rbdplugin-snapclass 4s
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```
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### Create rbd-Snapshot
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```bash
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kubectl create -f snapshot.yaml
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```
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### Verify if your Volume Snapshot has successfully been created
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```console
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$ kubectl get volumesnapshot
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NAME AGE
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rbd-pvc-snapshot 6s
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```
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### Check the status of the Snapshot
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```console
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$ kubectl describe volumesnapshot rbd-pvc-snapshot
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Name: rbd-pvc-snapshot
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Namespace: default
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Labels: <none>
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Annotations: <none>
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API Version: snapshot.storage.k8s.io/v1alpha1
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Kind: VolumeSnapshot
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Metadata:
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Creation Timestamp: 2019-02-06T08:52:34Z
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Finalizers:
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snapshot.storage.kubernetes.io/volumesnapshot-protection
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Generation: 5
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Resource Version: 84239
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Self Link: /apis/snapshot.storage.k8s.io/v1alpha1/namespaces/default/volumesnapshots/rbd-pvc-snapshot
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UID: 8b9b5740-29ec-11e9-8e0f-b8ca3aad030b
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Spec:
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Snapshot Class Name: csi-rbdplugin-snapclass
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Snapshot Content Name: snapcontent-8b9b5740-29ec-11e9-8e0f-b8ca3aad030b
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Source:
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API Group: <nil>
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Kind: PersistentVolumeClaim
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Name: rbd-pvc
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Status:
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Creation Time: 2019-02-06T08:52:34Z
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Ready To Use: true
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Restore Size: 1Gi
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Events: <none>
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```
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### Restore the Snapshot
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To restore the snapshot to a new PVC, create
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[pvc-restore.yaml](../examples/rbd/pvc-restore.yaml)
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and a testing pod [pod-restore.yaml](../examples/rbd/pod-restore.yaml)
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```bash
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kubectl create -f pvc-restore.yaml
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kubectl create -f pod-restore.yaml
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```
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### Clone the PVC
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```console
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$ kubectl create -f ../examples/rbd/pvc-clone.yaml
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$ kubectl get pvc
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NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
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rbd-pvc Bound pvc-c2ffdc98-3abe-4b07-838c-35a2a8067771 1Gi RWO rook-ceph-block 41m
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rbd-pvc-clone Bound pvc-b575bc35-d521-4c41-b4f9-1d733cd28fdf 1Gi RWO rook-ceph-block 45m
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rbd-pvc-restore Bound pvc-95308c75-6c93-4928-a551-6b5137192209 1Gi RWO rook-ceph-block 45m
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```
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