[Users] Designate Master Storage Domain

[Dead Horse]

Itamar this is true (I have noted occasional timing issues with it actually
working).
But what if as the administrator I have a specific storage domain in mind
that I would like to have become the master (in the case of more then two)?

@Karli
The idea is not to not have to shut down all the VM's or the engine just to
maintenance a storage domain(s) that may happen to be on disparate storage
servers
.
- DHC


On Thu, Aug 15, 2013 at 9:37 AM, Itamar Heim <iheim at redhat.com> wrote:

> On 08/15/2013 06:18 AM, Dead Horse wrote:
>
>> Is there any method of designating which domain should be the master
>> storage domain or forcibly changing the role to a different storage
>> domain?
>>
>> EG: Given the following example
>>
>> Storage Domain A (Master) --> NFS --> Storage Server 1
>> Storage Domain B --> NFS --> Storage Server 2
>>
>> One wants to do maintenance to Storage Server 1 but in doing so the
>> Master storage domain is hosted from Storage Server 1. Thus the net
>> result of taking down Storage Server 1 is that one must also take down
>> Storage Server 2.
>>
>> Thus we know we must shut down VM's from Storage Domain A to maintenance
>> Storage Server 1. Suppose however that VM's are running that we don't
>> want to shut down and are hosted from Storage Domain B via Storage Server
>> 2.
>>
>> We would want to be able to promote Storage Domain B to Master so that
>> we can take down Storage Domain A to do maintenance to Storage Server 1.
>>
>> Once we are done with maintenance to Storage Server 1 we can bring
>> Storage Domain A back on line, re-designate it as Master if desired and
>> bring it's VM's back online.
>>
>> I know I have seen this occur automatically to a point when a Storage
>> Domain goes missing that is the Master Domain but I have not noted any
>> manual method of doing so given the above scenario.
>>
>> - DHC
>>
>>
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>>
>>
> my understanding is you can move the storage domain A which is master to
> maint. engine will promote storage domain B to master and everything should
> continue working as is.
>
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