Re: [libvirt] [PATCH 0/8] logically memory hotplug via guest agent
On 2015/6/10 16:39, Vasiliy Tolstov wrote:
2015-06-10 11:37 GMT+03:00 Daniel P. Berrange
<berrange(a)redhat.com>:
> The udev rules are really something the OS vendor should setup, so
> that it "just works"
I think so, also for vcpu hotplug this also covered by udev. May be we
need something to hot remove memory and cpu, because in guest we need
offline firstly.
In fact ,we also have --guest option for 'virsh sevvcpus' command, which also
uses qga commands to do the logical hotplug/unplug jobs, although udev rules seems
to cover the vcpu logical hotplug issue.
virsh # help setvcpus
.........................
--guest modify cpu state in the guest
BTW: we didn't see OSes with udev rules for memory-hotplug-event setted by vendors,
and adding such rules means that we have to *interfere within the guest*, It seems
not a good option.
--
Oscar
oscar.zhangbo(a)huawei.com