[Users] fw: Migrating ovirt-engine to new server

[Itamar Heim]

On 10/03/2012 03:28 PM, Neil wrote:
> Sorry to repost(kind of) but I'm really battling here and I need to
> get the VM's up and running again.
>
> I've given up on the idea of migrating the database across due to all
> sorts of problems encountered and I've instead done a completely NEW
> fresh ovirt-engine install and I've got one host added and running.
>
> How do I go about detaching my storage datacentre from my old
> ovirt-engine, and re-attaching it to my new ovirt-engine running on my
> new server? I'm running FC with multiple LUNS all assigned in one
> datacentre called "linux" and I can't detach it because it says
> "Cannot detach Storage Domain while VMs/Templates reside on it." My
> entire datacentre is in maintenance at the moment which consists of
> only 3 VM's(4TB's in total), my host only has a 16GB SDD in it, so
> exporting to a local NFS mount is not an option.
>
> Can I safely remove the VM's(as instructed above) by going to "VM's"
> and clicking remove and then will I be able to detach the datacentre
> and then re-attach it to the new ovirt-engine? Bearing in mind that
> I'm running a fresh install of ovirt-engine and I haven't copied the
> database across? Is it a matter of re-attaching the LUNS that are
> currently assigned because I can see the LUNS when I try and add a new
> FC storage domain, however the LUNS currently attached to the old
> ovirt-engine are greyed out and can't be selected.

do you need to keep the VMs, or just move the LUNs to create a new one?
if you just want to create a new one, you just need to clear the LUNs 
(DD over them) so engine will let you use them (or remove them from 
first engine which will format them for same end goal.

>
> Any assistance is greatly appreciated.
>
> Thank you.
>
> Regards.
>
> Neil Wilson.
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