[libvirt-users] how to change existing domain xml?

p-man314 at mail.ru p-man314 at mail.ru
Wed Jan 25 20:07:15 UTC 2012

Matthias Bolte пишет:
> 2012/1/24  <p-man314 at mail.ru>:
>> Hi.
>> I'm trying to change network settings for a domain via libvirt (the driver
>> is xenapi) with no success.
>> According to its sources, 'virsh edit' uses virDomainGetXMLDesc(), allows to
>> edit the received xml and then use virDomainDefineXML(). In case of xenapi
>> driver it leads to a new vm creation (with the same name and edited
>> settings).
> virDomainDefineXML is the right API function. The problem is that the
> XenAPI driver currently has a bug here. It should check (via UUID and
> name) if the domain XML refers to an existing domain and update this
> domain or the if the given domain XML doesn't refer to an existing
> domain and define a new one instead.
> The XenAPI driver does not check this and always defines a new domain.
> So unfortunately you cannot edit the config of an existing domain
> until this bug is fixed,
Thank you for your explanations. Could you please provide a reference to
this bug in the bugzilla?
> You might be able to workaround this bug by undefining the domain
> first and then redefining it.

Unfortunately undefining and redefining destroys storage of a vm, at
least with xenapi.

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