On 08/15/2013 07:32 PM, Dead Horse wrote:actually, not sure i'm for this.
+1 to Adding a "Make Master Storage Domain Button" ;-)
if anything, we want to get rid of the master storage domain going forward to make the storage domains autonomous, allowing to mix and match storage types, local and shared storage, etc...
rhev-m may reconstruct the master storage domain on any of your SDs over time automatically
<mailto:laravot@redhat.com>> wrote:
----- Original Message -----
> From: "Dead Horse" <deadhorseconsulting@gmail.com<mailto:deadhorseconsulting@gmail.com>>
> To: "Itamar Heim" <iheim@redhat.com <mailto:iheim@redhat.com>>
> Cc: "<users@ovirt.org <mailto:users@ovirt.org>>" <users@ovirt.org
<mailto:users@ovirt.org>>
> Sent: Thursday, August 15, 2013 6:46:00 PM
> Subject: Re: [Users] Designate Master Storage Domain
>
> 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)?
In that case - you could reinitialize the pool using unattached
domain (you chose which one) - this domain will become the new master.
1. Create new unattached domain/Detach the domain that you want to
be the master from the pool (if possible)
2. Move all the pool domain to maintenance (the master should be put
to maintenance last to avoid reconstructing to another domain).
3. Right click on the data center, chose reinitialize storage pool -
you can chose which domain do you want to be the master from the
unattached domains.
The other option is manual db intervention :)
Possibly we could add a possibility to manually change the master
domain, same as was added for the spm ("Make SPM" button that was
added recently).
>
> @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@redhat.com> Users@ovirt.org <mailto:Users@ovirt.org><mailto:iheim@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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> Users mailing list> Users@ovirt.org <mailto:Users@ovirt.org>
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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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