[Users] oVirt 3.1 and Glusterfs how-to

[Itamar Heim]

On 07/05/2012 10:08 PM, Robert Middleswarth wrote:
> On 07/05/2012 02:19 PM, Itamar Heim wrote:
>> On 07/05/2012 10:06 AM, Robert Middleswarth wrote:
>>>> > 2) You can not change what interface / IP gluster uses, it will
>>>>> always use the ovirtmgmt network. This is a weakness as many people
>>>>> have
>>>>> an independent network just for storage and they can't use them with
>>>>> 3.1.
>>>>
>>>> sorry, i don't understand this one - only the management of gluster is
>>>> done via this interface. you can define a different logical network in
>>>> the cluster for storage, configure ip addresses for them, and define
>>>> the mount point that way.
>>>> (well, apart from potential bugs on network definitions in 3.1 which
>>>> may still exist)
>>>>
>>>
>>> Unless I am missing something if I setup Gluster to use anything other
>>> then the ovirtmgmt network then I can't create volumes because the
>>> engine uses the ovirtmgmt networks IP's and Gluster doesn't recognize
>>> it.
>>
>> engine uses ovirtmgmt to create them.
>> you can define another network to consume them (assuming you have more
>> than a single nic. otherwise, i'm not sure why it matters).
>>
> Are you suggesting that I add both Network IP into Gluster.  That would
> work but how would I know what network Gluster would use to sync up with?

I can think of two items:
1. network for hosts running VMs to communicate over - I assume will be 
based on the url of the export you provide (well, for nfs. for 
native/posix, not sure how redirection will work).

maybe worth adding something similar to the 'display network' - telling 
gluster which interface should be provided for clients to communicate over

2. for communication between gluster nodes for replication, etc.

maybe worth defining something like 'live migration network' or 'storage 
network'[1] - telling nodes which interface they should use for 
replication between nodes.

[1] both storage and live migration network are still not available for 
ovirt today, just a concept.
display network is available today.

>
> Thanks
> Robert
>