[libvirt] [RFC] relax offline migration requirements to --xml

[Nikolay Shirokovskiy]

On 22.04.2016 09:16, Jiri Denemark wrote:
> On Thu, Apr 21, 2016 at 17:52:07 +0300, Nikolay Shirokovskiy wrote:
>> Hi, all.
>>
>>   I'm thinking of leveraging of existing migration API to support offline clone
>> in virtuozzo. AFAIK offline migration is basically just copying of domain
>> config to the other side and defining it there. It is even possible to slightly
>> mutate it thru options like --dname or --xml but mutation restrictions are the same
>> as in case of active domain migration which is quite tight for an offline clone
>> case. In case of clone we want to change uuid, MACs etc. Well the changes
>> itself could be done by mgmt but this requires that libvirt drops the 
>> restictive checks for --xml option. What is your evaluation of this approach?
> 
> Yeah, the ABI stability check for user-supplied XML is probably too
> strict for offline migration. However, offline migration doesn't really
> do anything but transferring the domain XML to the destination host and
> if you supply your own XML, it's easier and much more powerful (no
> restrictions at all) to directly define the domain on the destination
> host using your modified XML.
> 
> Jirka
> 

This makes sense, thanx!