[lustre-discuss] Coexistence of Luster client and server on a single machine

[Christopher J. Morrone]

I do not think that is the case.  Mixing OSTs and clients is often bad 
as well.  It is generally a question of memory contention.

You can get away with mixing clients with any of the server types if 
your demands are modest enough.  That is why we sometimes say it is "OK 
for testing".  But even with testing, things can go south if your 
testing is strenuous enough.

We do not recommend mixing and clients and servers for general 
production use.

Chris

On 05/21/2015 06:43 AM, Ben Evans wrote:
> I believe it is OK for some simple functional testing, but not production, or working with large datasets.
>
> OSTs and MDTs can coexist, and I believe OSTs and Clients can coexist relatively peacefully, but MDTs and Clients are a bad mix.
>
> -Ben Evans
>
> -----Original Message-----
> From: lustre-discuss [mailto:lustre-discuss-bounces at lists.lustre.org] On Behalf Of Lukas Hejtmanek
> Sent: Thursday, May 21, 2015 7:34 AM
> To: lustre-discuss at lists.lustre.org
> Subject: [lustre-discuss] Coexistence of Luster client and server on a single machine
>
> Hello,
>
> some time ago I asked whether it is possible to run lustre server (OSD) and client (mount -t lustre) on the same machine. Somewhere close to Lustre 1.3.x, the answer was not, such setup is not recommended due to VM pressure from client and server.
>
> Is there anything new with current mainline Lustre version? So, can I mount my lustre fs on the same server that is used as OSD or MTS without harm?
>
> --
> Lukáš Hejtmánek
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