[libvirt] persistent->transient [was: [PATCH 8/8] UndefineFlags: Extend virsh undefine to support new flag]

Osier Yang jyang at redhat.com
Thu Jul 14 19:50:22 UTC 2011

于 2011年07月15日 00:25, Eric Blake 写道:
> On 07/13/2011 09:56 PM, Osier Yang wrote:
>>>> -=item B<undefine>   I<domain-id>
>>>> +=item B<undefine>   I<domain-id>   optional I<--undefine-managed-state>
>>>>    Undefine the configuration for an inactive domain. Since it's not
>>>> running
>>>>    the domain name or UUID must be used as the I<domain-id>.
>>> Oh, this is different than libvirt.c, which claimed you can run
>>> 'undefine' on a running persistent domain.  Which is it?  Can undefine
>>> make a running domain transient, or must it be on an inactive domain?
>> No, document in libvirt.c is not correct, undefining on a running domain
>> will be refused.
> I argue that we found a bug in the qemu driver then.
> Right now, you can use 'virDomainDefineXML' to convert a transient guest
> into a persistent one, but there is no counterpart operation to convert
> a persistent guest back into a transient one.
> That is, I think the libvirt.c docs are right in implying that you can
> 'undefine' a running domain, and that the qemu driver needs to be fixed
> to allow this use case.

It looks  to me all of the dirvers which supports domain undefine don't 
allow to
undefine a running domain, except xend, ESX, and xenapi, which leave the
determination to the underlying hypervisor.

> Either Dan, do you want to weigh in on this API question?
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