cephfs: no need to check for zero volume size

[humblec]

At present there is a 'todo' to check for zero volume size
in the createVolume request which in unwanted, ie the pvc
creation with size 0 fail from the kubernetes api validation itself:

For ex:

```
..spec.resources[storage]: Invalid value: "0": must be greater than zero```
```
so we dont need any extra check in the controller server

Signed-off-by: Humble Chirammal hchiramm@redhat.com

[nixpanic]

would be good to give a reference to the CSI spec and/or the implementation where the creation of a 0 size volume is prevented.

[humblec]

would be good to give a reference to the CSI spec and/or the implementation where the creation of a 0 size volume is prevented.

@nixpanic Its actually at CO side, the pvc creation fail like this:

# kubectl create -f check-zero.yaml 
The PersistentVolumeClaim "rbd-pvc-zero" is invalid: spec.resources[storage]: Invalid value: "0": must be greater than zero```

[nixpanic]

Not sure a kubectl check is sufficient, it really should be some CSI standard...

Pull request has been modified.

[humblec]

@Madhu-1 @nixpanic ptal.. thanks !

[nixpanic]

The commit still mentions

creation with size 0 fail from the api validation itself

which might only be correct for Kubernetes, it is better to mention that

ptal. thanks

[nixpanic]

The commit still mentions

creation with size 0 fail from the api validation itself

which might only be correct for Kubernetes, it is better to mention that

This still needs addressing?

Pull request has been modified.

addressed this too.. ptal.

[humblec]

@nixpanic may be final look ? :)

[humblec]

@nixpanic ptal.. thanks !