feat(ZFSPV): adding encryption in ZFSVolume CR

[pawanpraka1]

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

[codecov-io]

Codecov Report

Merging #6 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master       #6   +/-   ##
=======================================
  Coverage   89.55%   89.55%           
=======================================
  Files           1        1           
  Lines          67       67           
=======================================
  Hits           60       60           
  Misses          7        7

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[ptthon]

I have the secret key file on all nodes of /home/keys , but create volume failt

the err is:
zfs.csi.openebs.io_openebs-zfs-controller-0_5028c459-a44a-4063-9e5b-60efc06d2281 failed to provision volume with StorageClass "openebs-zfspv-enc": rpc error: code = Internal desc = not able to provision the volume, nodes [master3], err : zfs: volume creation failed

[pawanpraka1]

@ptthon please raise an issue for this. Also please upload the node agent logs.