The controller does not check whether the volume has been created or not
and return successful. Which in turn binds the pvc to the pv.
The PVC should not bound until corresponding zfs volume has been created.
Now controller will check the ZFSVolume CR state to be "Ready" before returning
successful. The CSI will retry the CreateVolume request when it will get
a error reply and when the ZFS node agent creates the ZFS volume and sets the
ZFSVolume CR state to be "Ready", the controller will return success for the
CreateVolume Request and then PVC will be bound.
Signed-off-by: Pawan <pawan@mayadata.io>
- To generate the CRD spec `make manifest` generate then under
deploy/yamls directory
- added a update-crd script to automate the steps to generate
CRDs and its validation of each types
Signed-off-by: prateekpandey14 <prateek.pandey@mayadata.io>
This commits support snapshot and clone commands via CSI driver. User can create snap and clone using the following steps.
Note:
- Snapshot is created via reconciliation CR
- Cloned volume will be on the same zpool where the snapshot is taken
- Cloned volume will have same properties as source volume.
-----------------------------------
Create a Snapshotclass
```
kind: VolumeSnapshotClass
apiVersion: snapshot.storage.k8s.io/v1beta1
metadata:
name: zfspv-snapclass
annotations:
snapshot.storage.kubernetes.io/is-default-class: "true"
driver: zfs.csi.openebs.io
deletionPolicy: Delete
```
Once snapshotclass is created, we can use this class to create a Snapshot
```
apiVersion: snapshot.storage.k8s.io/v1beta1
kind: VolumeSnapshot
metadata:
name: zfspv-snap
spec:
volumeSnapshotClassName: zfspv-snapclass
source:
persistentVolumeClaimName: csi-zfspv
```
```
$ kubectl get volumesnapshot
NAME AGE
zfspv-snap 7m52s
```
```
$ kubectl get volumesnapshot -o yaml
apiVersion: v1
items:
- apiVersion: snapshot.storage.k8s.io/v1beta1
kind: VolumeSnapshot
metadata:
annotations:
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"snapshot.storage.k8s.io/v1beta1","kind":"VolumeSnapshot","metadata":{"annotations":{},"name":"zfspv-snap","namespace":"default"},"spec":{"source":{"persistentVolumeClaimName":"csi-zfspv"},"volumeSnapshotClassName":"zfspv-snapclass"}}
creationTimestamp: "2020-01-30T10:31:24Z"
finalizers:
- snapshot.storage.kubernetes.io/volumesnapshot-as-source-protection
- snapshot.storage.kubernetes.io/volumesnapshot-bound-protection
generation: 1
name: zfspv-snap
namespace: default
resourceVersion: "30040"
selfLink: /apis/snapshot.storage.k8s.io/v1beta1/namespaces/default/volumesnapshots/zfspv-snap
uid: 1a5cf166-c599-4f58-9f3c-f1148be47fca
spec:
source:
persistentVolumeClaimName: csi-zfspv
volumeSnapshotClassName: zfspv-snapclass
status:
boundVolumeSnapshotContentName: snapcontent-1a5cf166-c599-4f58-9f3c-f1148be47fca
creationTime: "2020-01-30T10:31:24Z"
readyToUse: true
restoreSize: "0"
kind: List
metadata:
resourceVersion: ""
selfLink: ""
```
Openebs resource for the created snapshot
```
$ kubectl get snap -n openebs -o yaml
apiVersion: v1
items:
- apiVersion: openebs.io/v1alpha1
kind: ZFSSnapshot
metadata:
creationTimestamp: "2020-01-30T10:31:24Z"
finalizers:
- zfs.openebs.io/finalizer
generation: 2
labels:
kubernetes.io/nodename: pawan-2
openebs.io/persistent-volume: pvc-18cab7c3-ec5e-4264-8507-e6f7df4c789a
name: snapshot-1a5cf166-c599-4f58-9f3c-f1148be47fca
namespace: openebs
resourceVersion: "30035"
selfLink: /apis/openebs.io/v1alpha1/namespaces/openebs/zfssnapshots/snapshot-1a5cf166-c599-4f58-9f3c-f1148be47fca
uid: e29d571c-42b5-4fb7-9110-e1cfc9b96641
spec:
capacity: "4294967296"
fsType: zfs
ownerNodeID: pawan-2
poolName: zfspv-pool
status: Ready
volumeType: DATASET
kind: List
metadata:
resourceVersion: ""
selfLink: ""
```
Create a clone volume
We can provide a datasource as snapshot name to create a clone volume
```yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: zfspv-clone
spec:
storageClassName: openebs-zfspv
dataSource:
name: zfspv-snap
kind: VolumeSnapshot
apiGroup: snapshot.storage.k8s.io
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 4Gi
```
It will create a ZFS clone volume from the mentioned snapshot and create the PV on the same node where original volume is there.
Here, As resize is not supported yet, the clone PVC size should match the size of the snapshot.
Also, all the properties from the storageclass will not be considered for the clone case, it will take the properties from the snapshot and create the clone volume. One thing to note here is that, the storageclass in clone PVC should have the same poolname as that of the original volume as across the pool, clone is not supported.
Signed-off-by: Pawan <pawan@mayadata.io>
as it does the management task also corrected few logs
and renamed zvol to zfs(as we support zvol and dataset both)
Signed-off-by: Pawan <pawan@mayadata.io>
Application can now create a storageclass to create zfs filesystem
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: openebs-zfspv5
allowVolumeExpansion: true
parameters:
blocksize: "4k"
fstype: "zfs"
poolname: "zfspv-pool"
provisioner: zfs.csi.openebs.io
ZFSPV was supporting ext2/3/4 and xfs filesystem only which
adds one extra filesystem layer on top of ZFS filesystem. So now
we can driectly write to the ZFS filesystem and get the optimal performance
by directly creating ZFS filesystem for storage.
Signed-off-by: Pawan <pawan@mayadata.io>
This PR adds support to allow the CSI driver to pick up a node matching the topology specified in the storage class. Admin can specify allowedTopologies in the StorageClass to specify the nodes where the zfs pools are setup
```yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: openebs-zfspv
allowVolumeExpansion: true
parameters:
blocksize: "4k"
compression: "on"
dedup: "on"
thinprovision: "yes"
poolname: "zfspv-pool"
provisioner: zfs-localpv
volumeBindingMode: WaitForFirstConsumer
allowedTopologies:
- matchLabelExpressions:
- key: kubernetes.io/hostname
values:
- gke-zfspv-pawan-default-pool-c8929518-cgd4
- gke-zfspv-pawan-default-pool-c8929518-dxzc
```
Note: This PR picks up the first node from the list of nodes available.
Signed-off-by: Pawan <pawan@mayadata.io>
Adding support for enabling encryption using a custom key.
Also, adding support to inherit the properties from ZPOOL
which are not listed in the storage class, ZFS driver will
not pass default values while creating the volume. Those
properties will be inherited from the ZPOOL.
we can use the encryption option in storage class
```
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: openebs-zfspv
allowVolumeExpansion: true
parameters:
blocksize: "4k"
compression: "on"
dedup: "on"
thinprovision: "yes"
encryption: "on"
keyformat: "raw"
keylocation: "file:///home/keys/key"
poolname: "zfspv-pool"
provisioner: openebs.io/zfs
```
Just a note, the key file should be mounted inside the node-agent container so that we can use that file while provisioning the volume. keyformat can be raw, hex or passphrase.
Signed-off-by: Pawan <pawan@mayadata.io>
provisioning and deprovisioning of
the volumes on the node where zfs pool
has already been setup. Pool name and the volume
parameters has to be given in storage class
which will be used to provision the volume.
Signed-off-by: Pawan <pawan@mayadata.io>
