[ovirt-users] Sizing the master storage domain

[Itamar Heim]

On 09/18/2014 02:27 PM, Nicolas Ecarnot wrote:
> Hi,
>
> I know Itamar explained that the notion of master storage domain will
> disappear in some releases.
> But now, with a 3.4 I'm installing, I was wondering :
>
> - on my other oVirt setups, I started with one big (iSCSI) LUN, which is
> the master, and stored as many VMs I could
> - when space came to miss, I added another LUN, the another...
> - when I have to do some maintenance (grow, disable, other...) on a LUN,
> I can move my VM disks amongst the normal storage domains. When Empty, I
> can switch them off, add others, and so on
>
> The only one I can not play with is the master one.
> I came to think that I had no benefice storing anything on the master
> storage domain, and use only the normal storage domains.
>
> And then, I came to think I had no reason to dedicate a huge LUN for the
> master.
>
> Ok, but according to you, what is the minimum reasonable size for a
> master storage domain?
>

you should be able to move master domain to maint (deactivate, not 
detach) as well (full or empty). engine will just configure another 
storage domain as master iirc.