How do you compile OMV plugins?

UmbraMalison · 3. März 2015

Hi,

I would like to try OMV + BTRFS + 3.19 Kernel.

There is a 3.19 plugin here: https://github.com/OpenMediaVa…penmediavault-kernel-3.19

I got as far as using the plugin-utilities to download that repo... so no far really. I have no idea how to actually compile that plugin or any of the plugins.

The only guide I could find that is also stickied appeared to be for a much older version of OMV.

Please give me some hints, I was thinking I would find a cross compiler - so if there isn't one, do I need specific distro/release?

TIA, Andy

ryecoaaron · 3. März 2015

Which guide is outdated? The process for building hasn't changed. This also is not a plugin. It is just building a .deb package for the 3.19rc2 kernel.

Why do you need a cross compiler? Are you building on one system to install on another? I really wouldn't recommend doing this but if you do, try it in a virtual machine first. btrfs is in the backports 3.16 which you can install with omv-extras. Is there something you need in 3.19? If it is btrfs raid5, I would wait...

To build on Debian wheezy for the same arch that you want to install on (I'm sure you will have to install more dependencies than what I list):

Code

apt-get install build-essential git fakeroot devscripts
git clone https://github.com/OpenMediaVault-Plugin-Developers/openmediavault-kernel-3.19.git
dpkg-buildpackage -b

UmbraMalison · 3. März 2015

ryecoaaron,

Thanks for your reply, and your work with the plugins.

I found a guide on an older forum that was for pre 1.0. when i looked at it, i didn't see how it correlated with what I had found in OMV-plugin-developers sections on github. I should have said, I'm new and have only been exposed to OMV for about 4 hours.

I thought I would need a cross compiler as I don't have a debian system other than OMV and I *assumed* OMV would use a particular toolchain. However, I think what your saying is to build it on OMV, or get debian wheezy. either way, the toolchain will be correct.

thanks for listing out the steps, greatly appreciated.

yea, I had been under the impression that with 3.19 raid 5/6 with BTRFS was all green for go.

ryecoaaron · 3. März 2015

OMV 1.x = Debian Wheezy. My dev system is OMV. Then you don't have to worry about any compiler differences.

From what I read, raid5/6 under btrfs is still not ready for production even with 3.19.

UmbraMalison · 3. März 2015

Yep, you are correct. I knew it would be high risk, but have read this page: https://btrfs.wiki.kernel.org/index.php/RAID56 ... doesn't sound usable.

Guess i'm back on ZoL + OMV or FreeNAS.

Thanks for your help

ryecoaaron · 3. März 2015

There is a zfs plugin in the zfs testing repo...

subzero79 · 3. März 2015

You can use raid1 with kernel 3.16. Raid in btrfs is not rigid as mdadm. So 3x1TB in raid1 disk will give you 1.5TB usable space for example.
In 6 to 9 month when raid56 becomes ready you can switch to raid5 with online conversion, the same as you can switch in between raid1 and raid0 or single at the moment.

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