[Lustre-discuss] Lustre clients under Xen

[Lukas Hejtmanek]

On Thu, Dec 02, 2010 at 10:18:51AM -0500, Oleg Drokin wrote:
> It all depends on how Xen does the shrinking. If it blocks kernel code from execution for long periods of time in process,
> it's the same as if the node is suspended for some time essentially.
> Even if it would block only certain threads that tare trying to access to be shrunk memory and it happens to be certain lustre threads,
> that would still spend trouble if the blocking persists for significant amounts of time.
> 
> I personally use XEN without memory shrinking for my testing and it seems to be working just fine.

It could stop all the processes. And it pages out most used memory into swap. 
But maybe there are some problems resulting from unlocked pages in lustre 
threads?

-- 
Lukáš Hejtmánek