On Mon, Jan 07, 2013 at 03:23:41PM +0200, Yuval M wrote:
after a bit of playing with the system, I found a nice workaround: I added a host route on each host:
# route add -host 10.100.101.101 gw 172.22.22.1 and on the other one: # route add -host 10.100.101.100 gw 172.22.22.2
where 10.100.101/24 is the slow network and 172.22.22/24 is the fast network. migration now works through the fast link, with nothing changed in ovirt's configuration.
Nice hack! But it means that all IP traffic between these two hosts is routed over Infiniband. That's a Good Thing in your use case, but may confuse other setups. I would like to suggest a brand new "migration network" role in http://www.ovirt.org/Features/Migration_Network to provide managenet/migration network separation.