[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] 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 > > > _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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