Change amount of Ram and CPU cores in KVM

Question

How can I Change amount of Ram and CPU cores for a virtual machine in KVM that is already created? Thanks

IN run-time or with reboot? That would be really good to know BTW.
+1 - Also would be worth clarifying whether this would be in virt-manager (as referenced in previous question) or from command line.
Thanks, I think It's easier to change this in reboot and yes I created VMs in virt-manager but command-line is ok.

JavierMartinez · Accepted Answer · 2012-06-30 08:47:47Z

up vote 4 down vote accepted

You can edit its XML from command-line with:

virsh name_vhost

Then, you only have to search the <memory> tag and modify it

Keep in mind that the memory allocation is in kilobytes, so to allocate 512MB of memory, use 512 * 1024, or 524288.

answered Jun 30 '12 at 8:47

JavierMartinez
4298

Really Thanks, Can I increase CPU cores with this method ? – Zim3r Jun 30 '12 at 10:12

1

You should check this out semanticlab.net/index.php/… ;) – JavierMartinez Jun 30 '12 at 10:15

Is there any other way ? besides what is explaing on semanticlab.net – Zim3r Jun 30 '12 at 11:09

dyasny · Answer 2 · 2012-07-01 05:23:09Z

up vote 2 down vote

You can edit the VM settings in virt-manager or in cli by changing the XML in virsh edit VMNAME

answered Jul 1 '12 at 5:23

dyasny
8,27511024

Thanks for your help. – Zim3r Jul 1 '12 at 13:44

2 Answers