Re: [Xen-users] understanding memory hot-plug in a paravitual domU

[Jordi Moles Blanco <jordi@xxxxxxxxx>]

Hi,

thanks Kyle for the information.

I had read a lot of documentation and posts in forums and somehow missed 
that.
As you say, I feel that people would be less confused with this if 
mem-max clearly said that you can't grow the balloon higher than the 
initial memory value.
Thanks.



Al 18/11/11 11:47, En/na Kyle Lexmond ha escrit:
> Hi,
> Everything that I've read said that you can't balloon the memory
> beyond the maximum you specified in the config file when you created
> the domain. (eg.
> http://www.centos.org/docs/5/html/Virtualization-en-US/virt-task-xm-create-manage-doms.html#id2645186)
>
> So, no, based on the docs, the behaviour that you're seeing is
> expected, and, no, you can't balloon higher than the initial memory
> value.
>
> Strange that xm mem-max isn't giving errors though.
>
> ...
> > **********
> > # xm mem-max server 4096
> > # xm mem-set server 4096
> > **********
> >
> >
> > can i suppose then that this should work?
> >
> > the thing is that xen doesn't complain, but both 'xen top' and the machine
> > itself don't seem to show any increase in the memory.
> >
> > However, it works when setting a lower value.
> >
> > For example, I can create 'server' with 2048 and then go down to 1024 and
> > then to 2048 again, but never to a higher value. So... i guess that
> > mem-hotplug works because I can go down and up, but It can never go up
> > higher than the initial memory value.
> >
> > that's why yesterday I was asking if that's is even possible,

--
Jordi Moles Blanco
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