Re: [Xen-devel] dom0-min-mem=0 and enable-dom0-ballooning

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 07/06/2009 03:08, "Luke S Crawford" <lsc@xxxxxxxxx> wrote:

> I noticed something odd.  In newer versions of Xen,
> (enable-dom0-ballooning no) will disable ballooning.  But that is only
> respected in newer versions of Xen.   Before the enable-dom0-ballooning
> option was enabled, setting dom0-min-mem to 0 would disable ballooning.
> After the enable-dom0-ballooning setting was added, though, setting
> dom0-min-mem to 0 would actually set the minimum to zero.
> 
> This seems dangerous to me, as I can't think of any time where I'd really
> want to let the dom0 balloon to 0, and it's pretty easy to make the mistake
> of setting dom0-min-mem to 0 if you come across older documentation.
> 
> I would suggest changing xen so that dom0-min-mem 0 disabled ballooning as
> it did before.  

If you look at xen/xend/XendOptions.py:get_enable_dom0_ballooning(), you'll
see that dom0-min-mem=0 should still disable dom0 ballooning. At least in
theory!

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel