[libvirt] [PATCH 0/8] logically memory hotplug via guest agent

Daniel P. Berrange berrange at redhat.com
Wed Jun 10 08:37:16 UTC 2015


On Wed, Jun 10, 2015 at 02:05:16PM +0800, zhang bo wrote:
> On 2015/6/10 13:40, Vasiliy Tolstov wrote:
> 
> > 2015-06-10 5:28 GMT+03:00 zhang bo <oscar.zhangbo at huawei.com>:
> >> Thank you for your reply.
> >> Before this patch, we needed to manually online memory blocks inside the guest, after dimm memory hotplug
> >> for most *nix OSes. (Windows guests automatically get their memory blocks online after hotplugging)
> >> That is to say, we need to LOGICALLY hotplug memory after PHYSICAL hotplug.
> >> This patch did the LOGICAL part.
> >> With this patch, we don't need to get into the guest to manually online them anymore, which is even
> >> impossible for most host administrators.
> > 
> > 
> > As i remember this online step easy can be automate via udev rules.
> > 
> 
> 
> Logically that's true, but adding udev rules means:
> 1 you have to get into the guest
> 2 you have to be familar with udev rules.
> 
> Not convenient enough compared to just calling libvirt API to do so.

The udev rules are really something the OS vendor should setup, so
that it "just works"

Regards,
Daniel
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