Fibre Channel Persistent Volume, does k8s perform all the rescan\mount ops intree?

[Shay Berman]

Hello

If I want to create PV with type FC (Fibre Channel) as I mentioned HERE.

Then in order POD to consume it I create a PVC that bound to this PV.

So now a POD can be created and start uses this PVC.

So my question is : how the PV rescan, mkfs and mounted into the minion happened? 

is there any in-tree logic inside k8s that implement that part (rescan, newfs, mount) or in order to do that we need to built FlexVolume plugin that do all the host side operations?

Thanks

Shay

[Hemant Kumar]

There is a in-tree driver for handling Fiber Channel volumes in Kubernetes and you shouldn't need a FlexVolume plugin.

https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/fc/fc.go

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[Shay Berman]

1. But can I use Dynamic provisioner (PVC with Storage class) and then run a POD that consume this PVC by using the in tree kubernetes FC plugin (if so please send an example)?

2. If I will use the in-tree FC plugin, how the volume will be mapped to the relevant host?  this part is specific for each storage system. 

3. Why not just to create FlexVolume that support my storage system, for attach\detach\mount\umount volume operations?  and it could be used with dynamic provisioner as well.

Thanks

On Thursday, September 14, 2017 at 6:59:32 PM UTC+3, Hemant Kumar wrote:

There is a in-tree driver for handling Fiber Channel volumes in Kubernetes and you shouldn't need a FlexVolume plugin.

https://github.com/kubernetes/kubernetes/blob/master/pkg/volume/fc/fc.go

On Thu, Sep 14, 2017 at 3:00 AM, Shay Berman <shay...@gmail.com> wrote:

Hello

If I want to create PV with type FC (Fibre Channel) as I mentioned HERE.

Then in order POD to consume it I create a PVC that bound to this PV.

So now a POD can be created and start uses this PVC.

So my question is : how the PV rescan, mkfs and mounted into the minion happened? 

is there any in-tree logic inside k8s that implement that part (rescan, newfs, mount) or in order to do that we need to built FlexVolume plugin that do all the host side operations?

Thanks

Shay

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