Currently controller picks one node and the node agent keeps on trying to
create the volume on that node. There might not be enough space available
on that node to create the volume.
The controller can try on all the nodes sequentially and fail
the request if volume creation fails on all the nodes which satisfies the
topology contraints.
Signed-off-by: Pawan <pawan@mayadata.io>
Applications who want to share a volume can use below storageclass
to make their volumes shared by multiple pods
```yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: openebs-zfspv
parameters:
shared: "yes"
fstype: "zfs"
poolname: "zfspv-pool"
provisioner: zfs.csi.openebs.io
```
Now the provisioned volume using this storageclass can be used by multiple pods.
Here pods have to make sure of the data consistency and have to have locking mechanism.
One thing to note here is pods will be scheduled to the node where volume is present
so that all the pods can use the same volume as they can access it locally only.
This was we can avoid the NFS overhead and can get the optimal performance also.
Also fixed the log formatting in the GRPC log.
Signed-off-by: Pawan <pawan@mayadata.io>
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>
Validating few parameters for the ZFSVolume custom resource
- compression can be "on", "off", "lzjb", "gzip", "gzip-[1-9]", "zle" and "lz4"
- encryption can be "on", "off", "aes-128-ccm", "aes-192-ccm", "aes-256-ccm", "aes-128-gcm", "aes-192-gcm", and "aes-256-gcm"
- dedup can be "on" and "off"
- poolname can be string
- ownernodeid can be string
- thinprovision can be "yes" and "no"
- volumetype can be "DATASET" and "ZVOL"
Also added required fields needed to create ZFSVolume CR
- ownerNodeID
- poolname
- volumeType
- capacity
Signed-off-by: Pawan <pawan@mayadata.io>
2020-04-14 17:26:46 +05:30
Renamed from deploy/yamls/zfs.openebs.io_zfsvolumes.yaml (Browse further)
