zfs-localpv/pkg/response/create.go

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/*
Copyright © 2019 The OpenEBS Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package v1alpha1
import (
"github.com/container-storage-interface/spec/lib/go/csi"
)
// CreateVolumeResponseBuilder helps building an
// instance of csi CreateVolumeResponse
type CreateVolumeResponseBuilder struct {
response *csi.CreateVolumeResponse
}
// NewCreateVolumeResponseBuilder returns a new
// instance of CreateVolumeResponseBuilder
func NewCreateVolumeResponseBuilder() *CreateVolumeResponseBuilder {
return &CreateVolumeResponseBuilder{
response: &csi.CreateVolumeResponse{
Volume: &csi.Volume{},
},
}
}
// WithName sets the name against the
// CreateVolumeResponse instance
func (b *CreateVolumeResponseBuilder) WithName(name string) *CreateVolumeResponseBuilder {
b.response.Volume.VolumeId = name
return b
}
// WithCapacity sets the capacity against the
// CreateVolumeResponse instance
func (b *CreateVolumeResponseBuilder) WithCapacity(capacity int64) *CreateVolumeResponseBuilder {
b.response.Volume.CapacityBytes = capacity
return b
}
// WithContext sets the context against the
// CreateVolumeResponse instance
func (b *CreateVolumeResponseBuilder) WithContext(ctx map[string]string) *CreateVolumeResponseBuilder {
b.response.Volume.VolumeContext = ctx
return b
}
feat(zfspv): adding snapshot and clone support for ZFSPV (#39) 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>
2020-02-13 13:31:17 +05:30
// WithContentSource sets the contentSource against the
// CreateVolumeResponse instance
func (b *CreateVolumeResponseBuilder) WithContentSource(cnt *csi.VolumeContentSource) *CreateVolumeResponseBuilder {
b.response.Volume.ContentSource = cnt
return b
}
// WithTopology sets the topology for the
// CreateVolumeResponse instance
func (b *CreateVolumeResponseBuilder) WithTopology(topology map[string]string) *CreateVolumeResponseBuilder {
b.response.Volume.AccessibleTopology = make([]*csi.Topology, 1)
b.response.Volume.AccessibleTopology[0] = &csi.Topology{Segments: topology}
return b
}
// Build returns the constructed instance
// of csi CreateVolumeResponse
func (b *CreateVolumeResponseBuilder) Build() *csi.CreateVolumeResponse {
return b.response
}