[lustre-discuss] Lustre 2.8.0 released

[Alexander I Kulyavtsev]

You do not need to rebuild the kernel for "pure" zfs system. Few server kernel patches are for ldiskfs optimizations. You still need to rebuild zfs, lustre server and/or lustre client.

Client nodes may have different versions of kernels. You need to rebuild client for specific kernel version of client.  
We use(d) mix of Scientific Linux(5) 6 on head nodes and also SLF(5)6 with rebuilt upstream kernel on worker nodes.

Alex.
________________________________________
From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org> on behalf of Patrick Farrell <paf at cray.com>
Sent: Friday, March 18, 2016 10:34 AM
To: lustre-discuss at lists.lustre.org
Subject: Re: [lustre-discuss] Lustre 2.8.0 released

Lustre servers should, generally, be kept on exactly the supported
kernel as they patch the kernel and it's dicey whether or not those
patches will work on a newer kernel.  You're welcome to try it, of course.

Lustre clients are not intended to have kernel version dependencies and
in general can be built for any kernel version you'd like. Because some
interfaces are changed from time to time, this compatibility isn't
absolute.  But Lustre 2.8.0 should be buildable for essentially any
kernel in the last few years, unless something has changed from recent
history.  (There is also no need to build your own kernel in that case.
Just get the kernel-devel package for your kernel and build the Lustre
client against that.)

- Patrick

On 03/18/2016 10:30 AM, Jon Tegner wrote:
> This is great!
>
> Will start working with this new version as soon as possible.
>
> At this point I have a few questions:
>
> the lustre server kernel is based on
>
> kernel-3.10.0-327.3.1.el7.x86_64.rpm
>
> surely this means that the clients should be on the same version of
> the kernel (i.e., 3.1, but the standard one)?
>
> And if I want to use a later kernel I have to build it from source
> (something I have done on one of the release candidates, but didn't
> have time to test)?
>
> Would it actually be recommended to build lustre on a newer kernel (if
> you don't have any general issues with this older kernel)?
>
> Regards, and thanks again
>
> On 03/16/2016 11:13 PM, Jones, Peter A wrote:
>> We are pleased to announce that the Lustre 2.8.0 Release has been
>> declared GA and is available
>> for<https://downloads.hpdd.intel.com/public/lustre/latest-feature-release/>
>> download<https://downloads.hpdd.intel.com/public/lustre/lustre-2.8.0/> <https://downloads.hpdd.intel.com/public/lustre/lustre-2.8.0/>
>> . You can also grab the source
>> from<http://git.whamcloud.com/fs/lustre-release.git/commit/ea79df5af4d9b034e39caa396cefc2a075e572ba>
>> git<http://git.whamcloud.com/fs/lustre-release.git/commit/ea79df5af4d9b034e39caa396cefc2a075e572ba>
>>
>
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