Re: [ovirt-users] used bandwidth when live migrating
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/detaile...
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
blanchet(a)abes.fr