Support for linux-zen kernel

[marcelkorpel]

As linux-zen is in [extra], it would be nice to have kernel modules for it in archzfs.

I'm willing to experiment with a PKGBUILD derived from zfs-linux-git in AUR within a few days.

[demizer]

It's not too difficult to setup a new kernel, but I should write up some documentation on how to do this. Once we have it working I will put together some automated tests to make sure it works as a boot fs.

It would be great if someone other than me setup a new kernel with the archzfs build system so that I could know where the faults are.

[justrobd]

Hey demizer I would love to help. I just need to know where to get started. I been meaning to build the linux-vfio with zfs myself but not certain where to start. I have some spare time now to help out with testing. Like I said point me in the direction to get started and I will help out. Thanks!

[hexchain]

I've managed to add a zen mode and produce these packages for linux-zen. Tree is at https://github.com/hexchain/archzfs/tree/linux-zen. Will send PR if it looks good to you.

Note that it's not possible to have zfs for two kernel versions at the same time due to some common file (hopefully only for now).

[null-git]

There already is an experimental fix for this: #75
I don't know how well it's tested though

[hexchain]

Except for the headers, the {spl,zfs}-utils can also be shared among packages for different kernels. The only requirement for these utils is that their version must >= the kernel modules in use.

[demizer]

This kernel is now supported in the archzfs repository.