[Users] Cannot add another host to "all-in-one" datacenter

[Adam Tkáč]

2012/9/6 Mike Burns <mburns at redhat.com>:
> On Thu, 2012-09-06 at 20:07 +0200, Adam Tkáč wrote:
>> 2012/9/6 Simon Grinberg <simon at redhat.com>:
>> >
>> >
>> > ----- Original Message -----
>> >> From: "Adam Tkáč" <vonsch at gmail.com>
>> >> To: users at ovirt.org
>> >> Sent: Thursday, September 6, 2012 8:21:38 PM
>> >> Subject: [Users] Cannot add another host to "all-in-one" datacenter
>> >>
>> >> Hello all,
>> >>
>> >> I installed an oVirt datacenter via "all-in-one" plugin, which means
>> >> everything currently runs on one machine. I would like to add another
>> >> host to this datacenter, it has it's own storage for virtual machine
>> >> images, but oVirt refuses to add it with error "Cannot add more than
>> >> one Host to "Local Storage" Data Center". Is it possible to configure
>> >> this somewhere and add the host to the local_datacenter?
>> >
>> > Data center is a 'shared storage domain' meaning that if you use local storage you may only have one host in this datacenter.
>> > All In One, uses the Server's local storage thus you can't add another host to this data center.
>> >
>> > You may try and configure additional Data Center and add the new host to this one.
>> > If you want both hosts to be a cluster then move the hosts that is currently defined to the new datacenter and then connect them to shared storage.
>> >
>> > Just note that the engine will not be aware it's running on one of the hosts so care should be taken not to power off that host :).
>>
>> I didn't realized it's possible to do it this way, thanks for
>> information, will try it.
>>
>> Btw will it be possible to migrate virtual machines from one
>> datacenter to another one? Or for migration hosts need to share
>> storage for virtual machine images. If this isn't possible, is it be
>> possible to export host in one datacenter and import it in another?
>
> If you want live migration, then the hosts need shared storage and be in
> the same datacenter.
>
> There are export domains and you can export from DC1 to export and them
> import from the export to DC2.
>
> There are future features coming around storage live migration that
> *might* change this somewhat, but I don't know all the details of that
> feature yet.
>
> Mike

This works fine, thanks for your help!

Regards, Adam