On 07/07/2012 08:44 AM, Itamar Heim wrote:
On 07/06/2012 05:16 PM, Robert Middleswarth wrote:
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 I use localhost:/volumename so they talk to the localhost no network
On 07/06/2012 08:19 AM, Itamar Heim wrote: traffic between the oVirt node and the gluster systems all the traffice is between the gluster nodes.
I don't think so. it only means the host uses the local gluster service to fetch the data, then uses the network to directly access the node which has the needed volume to run the VM. I may not have made that clear but that is what I was saying the oVirt node talks to gluster either using NFS or Posix FS (Similar code) on the same host and allows Gluster to handle what ever network communication Gluster needs to do.
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. I think in the end that is the proper fix. Defining a storage network. Then when you go to create gluster volumes it would create them using the IP of the storage network. Also once you get the gluster peer setup cleaned up it would allow the nodes to be joined that way as well.
I think there are two things here: - client to gluster communication (for both metadata and data) - replication/sync between gluster nodes
Correct. In my setup all the client to gluster communication is done over local host. Gluster node's sync must happen over the ovirtmgnt network or I loss the ability to create volumes inside oVirt. If you don't under stand what I mean create a 2 node network. Setup the 2 nodes to use Glusterfs. Configure Gluster using the 2nd set of nics not using the ovirtmgmt and then try and create a volume using the volume tab. It will error out because the blocks use the ovirtmgmt interfaces IP for creating blocks not the 2nd nic IP so Gluster will error out on the block creation. That is why I said that create of an option for a Gluster Network would work. Since the code would adjust the add brink dialog box to allow a diff IP address to be used in Volume creation. Thanks Robert
[1] both storage and live migration network are still not available for ovirt today, just a concept. display network is available today.
Thanks Robert