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:[email protected]] On Behalf
Of Lukas Hejtmanek
Sent: Thursday, May 21, 2015 7:34 AM
To: [email protected]
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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