feat(zfs-localpv): initial commit

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>

pkg/apis/openebs.io/core/v1alpha1/zfsvolume.go

@@ -0,0 +1,100 @@
+/*
+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 (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// +genclient
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +resource:path=zfsvolume
+
+// ZFSVolume represents a ZFS based volume
+type ZFSVolume struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec VolumeInfo `json:"spec"`
+}
+
+// MountInfo contains the volume related info
+// for all types of volumes in ZFSVolume
+type MountInfo struct {
+	// FSType of a volume will specify the
+	// format type - ext4(default), xfs of PV
+	FSType string `json:"fsType"`
+
+	// AccessMode of a volume will hold the
+	// access mode of the volume
+	AccessModes []string `json:"accessModes"`
+
+	// MountPath of the volume will hold the
+	// path on which the volume is mounted
+	// on that node
+	MountPath string `json:"mountPath"`
+
+	// ReadOnly specifies if the volume needs
+	// to be mounted in ReadOnly mode
+	ReadOnly bool `json:"readOnly"`
+
+	// MountOptions specifies the options with
+	// which mount needs to be attempted
+	MountOptions []string `json:"mountOptions"`
+}
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +resource:path=csivolumes
+
+// ZFSVolumeList is a list of ZFSVolume resources
+type ZFSVolumeList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata"`
+
+	Items []ZFSVolume `json:"items"`
+}
+
+// VolumeInfo contains the volume related info
+// for all types of volumes in ZFSVolume
+type VolumeInfo struct {
+	// OwnerNodeID is the Node ID which
+	// is the owner of this Volume
+	OwnerNodeID string `json:"ownerNodeID"`
+
+	// poolName specifies the name of the
+	// pool where this volume should be created
+	PoolName string `json:"poolName"`
+
+	// Capacity of the volume
+	Capacity string `json:"capacity"`
+
+	// BlockSize specifies the blocksize
+	// which we should use to create the zvol
+	BlockSize string `json:"blocksize"`
+
+	// Compression specifies if the it should
+	// enabled on the zvol
+	Compression string `json:"compression"`
+
+	// Dedup specifies the deduplication
+	// should be enabledd on the zvol
+	Dedup string `json:"dedup"`
+
+	// Thinprovision specifies if we should
+	// thin provisioned the volume or not
+	ThinProvision string `json:"thinProvison"`
+}