feat(ZFSPV): adding support for applications to create "zfs" flesystem (#15)

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>

pkg/builder/build.go

@@ -142,13 +142,27 @@ func (b *Builder) WithOwnerNode(host string) *Builder {
 	return b
 }
 
-// WithBlockSize sets blocksize of ZFSVolume
-func (b *Builder) WithBlockSize(blockSize string) *Builder {
-	bs := "4k"
-	if len(blockSize) > 0 {
-		bs = blockSize
-	}
-	b.volume.Object.Spec.BlockSize = bs
+// WithRecordSize sets the recordsize of ZFSVolume
+func (b *Builder) WithRecordSize(rs string) *Builder {
+	b.volume.Object.Spec.RecordSize = rs
+	return b
+}
+
+// WithVolBlockSize sets the volblocksize of ZFSVolume
+func (b *Builder) WithVolBlockSize(bs string) *Builder {
+	b.volume.Object.Spec.VolBlockSize = bs
+	return b
+}
+
+// WithVolumeType sets if ZFSVolume needs to be thin provisioned
+func (b *Builder) WithVolumeType(vtype string) *Builder {
+	b.volume.Object.Spec.VolumeType = vtype
+	return b
+}
+
+// WithFsType sets filesystem for the ZFSVolume
+func (b *Builder) WithFsType(fstype string) *Builder {
+	b.volume.Object.Spec.FsType = fstype
 	return b
 }