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Re: [Qemu-devel] [PATCHv2 4/4] Warning messages on net devices hotplug


From: Eric Blake
Subject: Re: [Qemu-devel] [PATCHv2 4/4] Warning messages on net devices hotplug
Date: Tue, 23 Oct 2012 10:39:22 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121016 Thunderbird/16.0.1

On 10/23/2012 09:59 AM, Corey Bryant wrote:

> Only network devices are prevented, right?
> 
> Also, as I mentioned before, can you limit this to the subset of options
> that cause execve() to be issued?  For example, can we allow libvirt to
> pass an fd for hotplugging a network device (e.g. netdev_add tap,fd=23)?
>  I don't know for sure but I'm guessing libvirt does that.

Correct, libvirt prefers passing network devices pre-opened via fds,
rather than having qemu exec scripts.

>> +      manual. Also note that the hot plug is disabled when -sandbox
>> is in
>> +      effect
> 
> Not all hotplug abilities are disabled.  Just network devices.  This is
> missing a period too.

And not all network hotplug, just hotplug that requires use of exec
(again, fd passing bypasses the need for exec).

-- 
Eric Blake   address@hidden    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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