I double checked the cpu hotplug for kvm, website said it has a lot of bugs and 
removed from mainstream.

Thanksfrom Peter

From: mcheun...@hotmail.com
To: a...@openstack.org
Date: Thu, 11 Jul 2013 15:54:01 +0800
CC: openstack@lists.launchpad.net
Subject: Re: [Openstack] which API can do these?





Hi Anne    If I modify the flavor, the vm doesn't take effect immediately. So 
how can i add more cpu to a running instance?
Thanksfrom Peter

From: a...@openstack.org
Date: Tue, 9 Jul 2013 11:23:14 -0500
Subject: Re: [Openstack] which API can do these?
To: mcheun...@hotmail.com
CC: openstack@lists.launchpad.net

Hi Peter, 
Some doc links below.
On Tue, Jul 9, 2013 at 4:59 AM, Peter Cheung <mcheun...@hotmail.com> wrote:





Hi All  which API can do these?
1) adjust the RAM size, no of CPU core to an instance
For 1) the keyword you want to look for in the docs is flavors. You can read 
more at http://docs.openstack.org/trunk/openstack-ops/content/flavors.html. It 
indicates that you can use nova flavor-create -- note that you're technically 
not modifying an existing flavor, you're creating a new flavor and renaming it. 


Use nova --debug flavor-create to see the API commands associated with these 
adjustments to flavors.  

2) enlarge a disk to an instance
This is also specified in flavors. 
 

3) get the information about ram/cpu/disk size of an instance


You want this I believe. 
http://api.openstack.org/api-ref.html#ext-os-flavorextradata


 Thanksfrom Peter

                                          

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