> On 25 Nov 2016, at 11:08, Nathanaël Blanchet <[email protected]> wrote: > > > Le 25/11/2016 à 10:28, Nathanaël Blanchet a écrit : >> Hi all, >> >> We use in production a dedicated 10G vlan link for live migration. In the >> cluster option tab I put the migration bandwidth limit to 10000 Mbps. >> Everything work as expected and now 25 vms on a host migrate in a few >> seconds (excatly 13), but I'm not able to measure the real consumed >> bandwidth. I want to evaluate such a thing beacuse my goal is to dedicate a >> vlan for gluster ont the same 10G nic, and I don't want an overload issue >> with gluster when vms migrations happen. >> >> So my questions are : how does live migration work? Is it a RAM to RAM >> transport between two hosts? Are migration bandwidth limited by I/O disk >> anywhere or by the nic capabilities? Could 10Gbps be fully used for such >> staff? What would you advice to make work gluster and migration on the same >> nic (QoS?) > > Is this what I need ? > https://www.ovirt.org/develop/release-management/features/network/detailed-host-network-qos/
even the existing QoS capabilities should be enough Separating storage and migration traffic to different logical networks is indeed a good idea You can limit the migration bandwidth if it’s not critical, do you have nay specific requirements there? > > Cluster/DC (Data Center) - control the traffic related to a specific logical > network throughout the entire cluster/DC, including through its > infrastructure (e.g. L2 switches). > > Cluster/DC-wide QoS remains to be handled in the future. > > It seems not to be yet present in 4.0 > >> >> Thank you for help. >> >> > > -- > Nathanaël Blanchet > > Supervision réseau > Pôle Infrastrutures Informatiques > 227 avenue Professeur-Jean-Louis-Viala > 34193 MONTPELLIER CEDEX 5 > Tél. 33 (0)4 67 54 84 55 > Fax 33 (0)4 67 54 84 14 > [email protected] > > _______________________________________________ > Users mailing list > [email protected] > http://lists.ovirt.org/mailman/listinfo/users _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
