Re: [Xen-users] How can we increase de maximum memory for a domU

[Timo Benk <timo.benk@xxxxxx>]

On Thu, 22 Jun 2006 13:49:23 +0100, Jonathan Ervine <jervine@xxxxxxxxxx> wrote:
> On Wednesday 21 June 2006 11:51, Rachid Abdoun wrote:
>> But when you execute xentop (xen 3.0.2) you can see a column named
>> "MAXMEM" and this value is greate than the value fixed in the conf
>> file...
>>
>> What does mean this option (if there is enough memory and a domU need
>> more memory, that's mean the domU can use more memory that the memory
>> assigned by the conf file??? ) ?  How can we adjuste it?
>>
> You can certainly assign more memory dynamically to a running Xen DomU,
> however from my tests so far the OS running in the DomU hasn't recognised
> the
> additional memory available to it. So far it looks like the maximum memory
> recognised by the DomU is the amount assigned in the conf file.

I am quite sure that this is wrong.

Looking at /proc/xen/balloon, which is a xen specific and not os specific
thingy, you can see that a hard limit is reached.

The Hard Limit appears when you try to increase the memory amount above the
value set in the config file. And the hard limit is just a little below this
initally set value.

Greetings,
-timo
-- 
Timo Benk - Jabber ID: fry@xxxxxxxxxx - ICQ ID: #241877854
PGP Public Key: http://m28s01.vlinux.de/timo_benk_gpg_key.asc



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