Just fyi...
I use Fedora 14 with some VMs on VMWare here and CPU hotplug (add and
remove) works. I have not tested it with memory yet, but I'm quite sure
it will work - at least adding memory...
-of
On 01/20/2011 08:53 PM, Renich Bon Ciric wrote:
Hello guys!
I'm in direct contact with the guys @ CloudSigma.
I've asked them to support CPU, RAM and HDD hot swapping and they say
their system is capable of this but that linux (particularly, Fedora)
isn't.
They agree to do some testing on the subject but, honestly, I don't
consider myself to be sufficiently knowledgeable to lead this.
Is there anybody here interested on this?
Anyway, their lead dev told them this:
"Libvirt doesn't do any of this stuff itself (hot swapping). What it
does include is
an ability to use the virtio balloon driver. This essentially allows you to
give a guest a large amount of ram, with it then voluntarily lending some of
that memory back to the system. It requires a degree of cooperation and
trust between host and guest that isn't appropriate (or easy to bill) in a
public cloud, but it's a useful hack on private VM deployments in the
absence of proper memory hotswap in qemu-kvm."
I've read some stuff here:
http://www.linux-kvm.org/page/CPUHotPlug
It's hard to be free... but I love to struggle. Love isn't asked for;
it's just given. Respect isn't asked for; it's earned!
Renich Bon Ciric
http://www.woralelandia.com/
http://www.introbella.com/
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