[Users] How to efficiently share templates between datacenters which have local storages?

[Adam Tkáč]

2012/11/22 Itamar Heim <iheim at redhat.com>:
> On 11/19/2012 08:02 PM, Adam Tkáč wrote:
>>
>> Hello,
>>
>> I use oVirt 3.1.0.
>>
>> Does anyone have an idea how to efficiently share VM templates between
>> multiple datacenters which use local storages for VM images? I tried
>> two methods:
>>
>> 1. Add another cluster to "local storage datacenter" which failed with
>> oVirt error that this isn't allowed
>> 2. Tried to create new NFS data domain but this isn't possible because
>> oVirt interface allows me to create only NFS export or NFS ISO domains
>> (not data domain)
>>
>> So every time when I would like to use some template in other
>> datacenter, I have to export it to export domain and then import it in
>> other datacenter. This isn't optimal way because templates are
>> duplicated over datacenters. Duplication causes problems - when I want
>> to update template, I must update it and copy to all datacenters
>> again. And, of course, duplicated templates consume disk space.
>
>
> how did you envision doing this without consuming disk space? a shared NFS
> domain for the templates?

Exactly. To be more precise, I imagine either NFS/Fibre Channel/iSCSI
should be possible. However as I wrote above, I'm unable to create NFS
data domain when datacenter uses "local" storage.

Regards, A

>>
>> "Non-oVirt" solution, when I manually export part of local storage of
>> one datacenter with templates via NFS and then mount it in other
>> datacenters is also ok but I'm not sure if it will work.
>
>
>