Akhilesh,

I wonder whether or not you'll find it possible to downgrade your kernel version so far. I expect that large of a change may break some system components, such as the init system.

But more importantly...
Since Lustre servers patch the kernel, it will probably be very hard to build them for anything other than exactly the supported kernels.
That's why there's no info about it: I don't think anyone does it. At best, it will be difficult, and if you have problems, it will be hard to get help, because what you're trying to do is unique and untested.

Is there some really compelling reason you don't want to use CentOS servers? I think you'll be much happier doing that.

If you're really determined, the build process documented here is current and explains how to build the server kernel and RPMs for CentOS 6 - You'll have to figure out how to adapt it to Ubuntu yourself:
https://wiki.hpdd.intel.com/pages/viewpage.action?pageId=8126821

- Patrick

PS: The latest, unreleased, development code has RHEL 7 server support. You might be able to adapt that to get servers on a newer kernel, but that code is not really ready for production use.

On 04/09/2015 02:20 PM, Akhilesh Gadde wrote:

Hi,

I am planning to set up a cluster running Lustre FS with all nodes running on Ubuntu 14.04 in our lab and looking for references of any such deployments and possibly pointers in that direction.

I am aware that officially Lustre supports only Cent OS or RHEL for servers (MDS/OSS). But I wanted to try with Ubuntu as the OS on all clients, OSS and MDS nodes.

Though there are enough references on the net showing that clients in the cluster were running Ubuntu, I found it difficult to find much information about servers running on Ubuntu.

The links I found like the Debian wiki for installing show that the kernel need to be recomplied for installing lustre servers. (Their explanation was with kernel version 2.6.32). The links presented there looks outdated and were not functional. (Wiki was made for Lustre 2.2 version)

The current Ubuntu 14.04 LTS runs on 3.13.0-49-generic kernel version. I looked up GitHub of the latest kernel version and it shows that the lustre client's code has been incorporated into the kernel. I am unable to find any information wrt to the servers.

So, should I downgrade my kernel to 2.6.X version, recomplie it with the patch and use it for lustre server(s) installation?

Hope to hear back with some help regarding this.

Thanks,
Akhilesh Gadde.
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