On Fri, Nov 29, 2013 at 11:49:05AM +0100, Ernest Beinrohr wrote: > I want to put some of my hvs to maintenance, but that causes a > migration storm, which causes an temporary unavailability of the hv > and ovirt fences it, while migrations are still running. > > So I have to migrate one-by-one manually and then put the hv to maintenance. > > Is it possible to limit migration speed and number of concurrent migrations?
You could set max_outgoing_migrations to 1 (in each /etc/vdsm/vdsm.conf), but even a single VM migrating may choke your connection (depends which wins, the CPU running qemu, or your bandwidth). Currently, your only option is to define a migration network for your cluster (say, over a different nic, or over a vlan), and use tools external to ovirt to throtle the bandwidth on it (virsh net-edit <network name> and http://libvirt.org/formatnetwork.html#elementQoS can come up handy). ovirt-3.4 should expose the ability to set QoS limits on migration networks. Dan. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users