Hey Milan,

I guess we will have to look into it further.

Thank you.

Sent from my iPhone

> On 27 Aug 2019, at 11:39, Milan Zamazal <mzama...@redhat.com> wrote:
> 
> Milan Zamazal <mzama...@redhat.com> writes:
> 
>> "Vrgotic, Marko" <m.vrgo...@activevideo.com> writes:
>> 
>>> What I am aiming for is following:
>>> We have a nauseate hook which deletes dns records from DNS server, for of a 
>>> VM “destroyed”.
>>> That is just as we wanted it, except in a case of Migration, which is
>>> also a “destructive” action, looking from perspective of a Hypervisor.
>>> I was testing an order of Hooks triggered when I issue VM Migrate, in
>>> order to discover which Hook I can use to trigger update of the
>>> records for a VM that is Migrated.
>>> 
>>> Seems that “after_vm_destroy” is the last in order hook to be executed
>>> when VM is migrated, and I wanted to verify that.
>> 
>> Hi Marko, I see, I understand now what's your problem.  after_vm_destroy
>> is called on the source while after_vm_migrate_destination on the
>> destination and I don't think there is any guarantee in which order they
>> are mutually called.
>> 
>>> How come that there is no hook which enables VM start or continue on a
>>> destination hypervisor, after VM is migrated? Or am I missing
>>> something?
>> 
>> after_vm_migrate_destination is called on the destination, but see
>> above.  A possible solution could be to look in the domain XML passed to
>> after_vm_destroy, there should be an exit reason in the metadata
>> section.  If the reason is migration, then you can skip your delete
>> action.
> 
> Hm, it seems there is no exit info after migration.  Another idea is to
> put something into after_vm_migrate_source hook that would prevent the
> record deletion.
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