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Re: [virt-tools-list] [virt-tool-list][PATCH]virt-manager: use host CPU configuration when creating new VM




> -----Original Message-----
> From: Giuseppe Scrivano [mailto:gscrivan redhat com]
> Sent: Tuesday, November 19, 2013 8:52 PM
> To: Chen Hanxiao
> Cc: virt-tools-list redhat com
> Subject: Re: [virt-tools-list] [virt-tool-list][PATCH]virt-manager: use
host CPU
> configuration when creating new VM
> 
> Chen Hanxiao <chenhanxiao cn fujitsu com> writes:
> 
> > From: Chen Hanxiao <chenhanxiao cn fujitsu com>
> >
> > This patch will use host CPU configuration automatically
> > when creating new VM.
> 
> on what version of virt-manager is your patch based?  I tried to apply
> it to the current git master branch[1] but I get a conflict.
> 
My virt-manager git is a little old. I'll try to update it to the latest

> In addition, I am not sure what is the impact of such a change, what are
> for example the downsides for a migration if we default to a more
> restrictive CPU configuration.
> 
libvirt may refuse to start the VM with a poorer CPU.

And I think user will not be too surprise when they meet this scenario.
Just clear the old config, and press the existed button 'Copy host CPU
configuration'
will give them better performance and more feature.
We can doc this for users.

> Regards,
> Giuseppe
> 
> 1) https://git.fedorahosted.org/cgit/virt-manager.git/log/



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