On Thu, Oct 03, 2013 at 12:44:14PM +0300, Livnat Peer wrote:
Hi Gianluca,
<snip>
On 10/02/2013 08:52 PM, Itamar Heim wrote:
On 09/28/2013 08:33 PM, Gianluca Cecchi wrote:
Hello, I remember in the past that could be a problem to have high usage of ovirtmgmt network because engine sometimes detects hosts as unresponsive. And it should this the reason about bandwith limitation on vm migration, until dedicated network for it has been released.
We have a dedicated migration network in oVirt 3.3, which means all the migration network is using a dedicated network and not the management network. The caveat is that we still did not add support for capping it's bandwidth. The problem you detailed above can be bypassed by configuring the migration network on a dedicated interface.
SO the question is : what about ovirtmgmt network for gluster replication when gluster domain is provided by ovirt nodes? I suppose it could be a problem too, couldn't it?
yes that is correct, using ovirtmgmt for non management traffic is not a good idea.
In case I have a dedicated network for gluster for the nodes, how can i configure it?
Generally there two ways to go about this:
1. add a new network role 'gluster replication' and then adjust the engine code to pass the network with this role as parameter to the replication verb in VDSM.
2. in the replication verb in the UI let the user choose which network to use for the replication.
I am not familiar with the replication verb so I might be missing something but otherwise I think that solution 2 is more simple and less invasive then requiring a new network role.
Bala, is there a means to select, for each node, which IP address is to be used for replication? AFAICT we use the host fqdn, which most probably resolves to the ovirtmgmt device.
Can I configure in this case Gluster storage domain from ovirt engine or does it require to be on this network too?
Thanks in advance for any suggestion
Gianluca _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
livnat - would network QoS cover this?
Network Qos is needed in addition to what I have specified above. and it would be available in oVirt 3.4 hopefully, but if you use a dedicated network as suggested above you can bypass the traffic shaping issue by using a dedicated NIC.
Livnat
vijay/sahina - does it make sense to define a 'gluster replication network' or something like that?
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