[ClusterLabs] can't live migrate VirtualDomain which is part of a group

[Ken Gaillot]

On 04/24/2017 02:33 PM, Lentes, Bernd wrote:
> 
> ----- On Apr 24, 2017, at 9:11 PM, Ken Gaillot kgaillot at redhat.com wrote:
> 
>>>> primitive prim_vnc_ip_mausdb IPaddr \
>>>>        params ip=146.107.235.161 nic=br0 cidr_netmask=24 \
>>>>        meta is-managed=true
>>
>> I don't see allow-migrate on the IP. Is this a modified IPaddr? The
>> stock resource agent doesn't support migrate_from/migrate_to.
> 
> Not modified. I can migrate the resource without the group easily between the nodes. And also if i try to live-migrate the whole group,
> the IP is migrated.

Unfortunately, migration is not live migration ... a resource (the VM)
can't be live-migrated if it depends on another resource (the IP) that
isn't live-migrateable.

If you modify IPaddr to be live-migrateable, it should work. It has to
support migrate_from and migrate_to actions, and advertise them in the
meta-data. It doesn't necessarily have to do anything different from
stop/start, as long as that meets your needs.

>>> What i found in the net:
>>> http://lists.clusterlabs.org/pipermail/pacemaker/2011-November/012088.html
>>>
>>> " Yes, migration only works without order-contraints the migrating service
>>> depends on ... and no way to force it."
>>
>> I believe this was true in pacemaker 1.1.11 and earlier.
>>
> 
> Then it should be possible:
> 
> ha-idg-2:~ # rpm -q pacemaker
> pacemaker-1.1.12-11.12
> 
> Bernd
>  
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