[lustre-discuss] Lustre Client in a container

[Patrick Farrell]

Ah, yes, that will likely be a tricky one.  You may simply have to bite the bullet, copy what you can early, and accept a downtime to finalize.

Note also that there may be no kernel version for which you could compile both of those?  Possibly some version of CentOS 6.
________________________________
From: David Cohen <cdavid at physics.technion.ac.il>
Sent: Sunday, December 31, 2017 2:50:05 AM
To: Patrick Farrell
Cc: lustre-discuss at lists.lustre.org
Subject: Re: [lustre-discuss] Lustre Client in a container

Patrick,
Thanks for you response.
I looking for a way to migrate from 1.8.9 system to 2.10.2, stable enough to run the several weeks or more that it might take.


David

On Sun, Dec 31, 2017 at 12:12 AM, Patrick Farrell <paf at cray.com<mailto:paf at cray.com>> wrote:

David,


I have no direct experience trying this, but I would imagine not - Lustre is a kernel module (actually a set of kernel modules), so unless the container tech you're using allows loading multiple different versions of *kernel modules*, this is likely impossible.  My limited understanding of container tech on Linux suggests that this would be impossible, containers allow userspace separation but there is only one kernel/set of modules/drivers.


I don't know of any way to run multiple client versions on the same node.


The other question is *why* do you want to run multiple client versions on one node...?  Clients are usually interoperable across a pretty generous set of server versions.


- Patrick



________________________________
From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org<mailto:lustre-discuss-bounces at lists.lustre.org>> on behalf of David Cohen <cdavid at physics.technion.ac.il<mailto:cdavid at physics.technion.ac.il>>
Sent: Saturday, December 30, 2017 11:45:15 AM
To: lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>
Subject: [lustre-discuss] Lustre Client in a container

Hi,
Is it possible to run Lustre client in a container?
The goal is to run two different client version on the same node, can it be done?

David


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