[libvirt] [PATCHv2] qemu: fix graphics port allocation

[Ján Tomko]

On 02/28/13 00:17, Eric Blake wrote:
> On 02/27/2013 04:51 AM, Ján Tomko wrote:
>> Only release ports that have been allocated before.
>>
>> This fixes these issues:
>> * trying to release ports when qemuProcessStart fails before port
>>   allocation
>> * trying to release the SPICE TLS port if spice_tls is 0
>> * failing to release SPICE port with autoport=off (when only one
>>   of them is -1)
>> ---
>> v1: https://www.redhat.com/archives/libvir-list/2013-February/msg01464.html
>> Use a pair of booleans in domain private data instead of a new field
>> in the domain definition.
> 
> Closer, but where is this information saved across libvirtd restarts?
> Hint: qemu_domain.c:qemuDomainObjPrivateXML{Format,Parse}()

We don't preserve the port allocator state across restarts, so saving
this would do nothing in the best case. (the worse cases being printing
an error or (possibly?) marking a used port as unused).

Jan