[Users] Limit migration bandwidth

[Doron Fediuck]

----- Original Message -----
| From: "Joop" <jvdwege at xs4all.nl>
| To: users at ovirt.org
| Sent: Sunday, July 14, 2013 12:21:20 AM
| Subject: [Users] Limit migration bandwidth
| 
| Hi All,
| 
| I have seen this question asked before and seen it answered but can't
| find it back on either the mailinglist or IRC, probably because I don't
| use the correct search term but can't dream up any new ones so I'm asking:
| How to limit the amount of VM's that can simultaneously be migrated and
| how to limit the bandwidth used by migrating VM's?
| Looked at vdc_options, engine-config but have run out of ides.
| 
| Thanks in advance,
| 
| Joop
| --
| irc: jvandewege
| 

Hi Joop,
Currently it is possible to hard-limit the migration using
The /usr/share/doc/<vdsm-version>/vdsm.conf.sample file with

# Maximum bandwidth for migration, in mbps, 0 means libvirt's default (30mbps?).
# migration_max_bandwidth = 0

Change 0 to something else (5 does magic IIRC) to see how it works.

In the coming oVirt 3.3 we should be able to handle this by separating
the migration network, and then use-
http://www.ovirt.org/Features/Network_QoS

Doron