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xen-users
RE: [Xen-users] memory hotplug for guests?
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
> Tomasz Chmielewski
> Sent: 04 April 2007 11:57
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] memory hotplug for guests?
>
> Does Xen allow something like "memory hotplug" for its guests?
>
>
> For example, lets says you are running several guests, and
> would like to
> start yet another one for a while - but have no free memory left.
>
> So you simply "hotplug remove" memory from a guest that has a lot of
> free memory left - and start a new guest.
>
> When that new guest is no longer needed, and is stopped, you can
> "hotplug add" memory to the guest it was previously removed from.
Yes, for para-virtual domains you can use the "balloon driver" to do
this. Obviously, HVM-guests aren't (generally speaking) able to support
memory hotplug/unplug as readily (and the interface for these operations
are generally proprietary to the particular platform, and Xen doesn't
support this, AFAIK).
"xm mem-set domain amount" is the command for doing this in para-virtual
domains.
--
Mats
>
>
> Is it possible with Xen? If not, is such a feature planned?
>
>
> --
> Tomasz Chmielewski
> http://wpkg.org
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>
>
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